0.2.0 - Mid migration

This commit is contained in:
Daniel Mason 2022-04-25 14:47:15 +12:00
parent 139e6a915e
commit 7e38fdbd7d
42393 changed files with 5358157 additions and 62 deletions

528
web/node_modules/css-tree/lib/common/List.js generated vendored Normal file
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//
// list
// ┌──────┐
// ┌──────────────┼─head │
// │ │ tail─┼──────────────┐
// │ └──────┘ │
// ▼ ▼
// item item item item
// ┌──────┐ ┌──────┐ ┌──────┐ ┌──────┐
// null ◀──┼─prev │◀───┼─prev │◀───┼─prev │◀───┼─prev │
// │ next─┼───▶│ next─┼───▶│ next─┼───▶│ next─┼──▶ null
// ├──────┤ ├──────┤ ├──────┤ ├──────┤
// │ data │ │ data │ │ data │ │ data │
// └──────┘ └──────┘ └──────┘ └──────┘
//
function createItem(data) {
return {
prev: null,
next: null,
data: data
};
}
function allocateCursor(node, prev, next) {
var cursor;
if (cursors !== null) {
cursor = cursors;
cursors = cursors.cursor;
cursor.prev = prev;
cursor.next = next;
cursor.cursor = node.cursor;
} else {
cursor = {
prev: prev,
next: next,
cursor: node.cursor
};
}
node.cursor = cursor;
return cursor;
}
function releaseCursor(node) {
var cursor = node.cursor;
node.cursor = cursor.cursor;
cursor.prev = null;
cursor.next = null;
cursor.cursor = cursors;
cursors = cursor;
}
var cursors = null;
var List = function() {
this.cursor = null;
this.head = null;
this.tail = null;
};
List.createItem = createItem;
List.prototype.createItem = createItem;
List.prototype.updateCursors = function(prevOld, prevNew, nextOld, nextNew) {
var cursor = this.cursor;
while (cursor !== null) {
if (cursor.prev === prevOld) {
cursor.prev = prevNew;
}
if (cursor.next === nextOld) {
cursor.next = nextNew;
}
cursor = cursor.cursor;
}
};
List.prototype.getSize = function() {
var size = 0;
var cursor = this.head;
while (cursor) {
size++;
cursor = cursor.next;
}
return size;
};
List.prototype.fromArray = function(array) {
var cursor = null;
this.head = null;
for (var i = 0; i < array.length; i++) {
var item = createItem(array[i]);
if (cursor !== null) {
cursor.next = item;
} else {
this.head = item;
}
item.prev = cursor;
cursor = item;
}
this.tail = cursor;
return this;
};
List.prototype.toArray = function() {
var cursor = this.head;
var result = [];
while (cursor) {
result.push(cursor.data);
cursor = cursor.next;
}
return result;
};
List.prototype.toJSON = List.prototype.toArray;
List.prototype.isEmpty = function() {
return this.head === null;
};
List.prototype.first = function() {
return this.head && this.head.data;
};
List.prototype.last = function() {
return this.tail && this.tail.data;
};
List.prototype.each = function(fn, context) {
var item;
if (context === undefined) {
context = this;
}
// push cursor
var cursor = allocateCursor(this, null, this.head);
while (cursor.next !== null) {
item = cursor.next;
cursor.next = item.next;
fn.call(context, item.data, item, this);
}
// pop cursor
releaseCursor(this);
};
List.prototype.forEach = List.prototype.each;
List.prototype.eachRight = function(fn, context) {
var item;
if (context === undefined) {
context = this;
}
// push cursor
var cursor = allocateCursor(this, this.tail, null);
while (cursor.prev !== null) {
item = cursor.prev;
cursor.prev = item.prev;
fn.call(context, item.data, item, this);
}
// pop cursor
releaseCursor(this);
};
List.prototype.forEachRight = List.prototype.eachRight;
List.prototype.nextUntil = function(start, fn, context) {
if (start === null) {
return;
}
var item;
if (context === undefined) {
context = this;
}
// push cursor
var cursor = allocateCursor(this, null, start);
while (cursor.next !== null) {
item = cursor.next;
cursor.next = item.next;
if (fn.call(context, item.data, item, this)) {
break;
}
}
// pop cursor
releaseCursor(this);
};
List.prototype.prevUntil = function(start, fn, context) {
if (start === null) {
return;
}
var item;
if (context === undefined) {
context = this;
}
// push cursor
var cursor = allocateCursor(this, start, null);
while (cursor.prev !== null) {
item = cursor.prev;
cursor.prev = item.prev;
if (fn.call(context, item.data, item, this)) {
break;
}
}
// pop cursor
releaseCursor(this);
};
List.prototype.some = function(fn, context) {
var cursor = this.head;
if (context === undefined) {
context = this;
}
while (cursor !== null) {
if (fn.call(context, cursor.data, cursor, this)) {
return true;
}
cursor = cursor.next;
}
return false;
};
List.prototype.map = function(fn, context) {
var result = new List();
var cursor = this.head;
if (context === undefined) {
context = this;
}
while (cursor !== null) {
result.appendData(fn.call(context, cursor.data, cursor, this));
cursor = cursor.next;
}
return result;
};
List.prototype.filter = function(fn, context) {
var result = new List();
var cursor = this.head;
if (context === undefined) {
context = this;
}
while (cursor !== null) {
if (fn.call(context, cursor.data, cursor, this)) {
result.appendData(cursor.data);
}
cursor = cursor.next;
}
return result;
};
List.prototype.clear = function() {
this.head = null;
this.tail = null;
};
List.prototype.copy = function() {
var result = new List();
var cursor = this.head;
while (cursor !== null) {
result.insert(createItem(cursor.data));
cursor = cursor.next;
}
return result;
};
List.prototype.prepend = function(item) {
// head
// ^
// item
this.updateCursors(null, item, this.head, item);
// insert to the beginning of the list
if (this.head !== null) {
// new item <- first item
this.head.prev = item;
// new item -> first item
item.next = this.head;
} else {
// if list has no head, then it also has no tail
// in this case tail points to the new item
this.tail = item;
}
// head always points to new item
this.head = item;
return this;
};
List.prototype.prependData = function(data) {
return this.prepend(createItem(data));
};
List.prototype.append = function(item) {
return this.insert(item);
};
List.prototype.appendData = function(data) {
return this.insert(createItem(data));
};
List.prototype.insert = function(item, before) {
if (before !== undefined && before !== null) {
// prev before
// ^
// item
this.updateCursors(before.prev, item, before, item);
if (before.prev === null) {
// insert to the beginning of list
if (this.head !== before) {
throw new Error('before doesn\'t belong to list');
}
// since head points to before therefore list doesn't empty
// no need to check tail
this.head = item;
before.prev = item;
item.next = before;
this.updateCursors(null, item);
} else {
// insert between two items
before.prev.next = item;
item.prev = before.prev;
before.prev = item;
item.next = before;
}
} else {
// tail
// ^
// item
this.updateCursors(this.tail, item, null, item);
// insert to the ending of the list
if (this.tail !== null) {
// last item -> new item
this.tail.next = item;
// last item <- new item
item.prev = this.tail;
} else {
// if list has no tail, then it also has no head
// in this case head points to new item
this.head = item;
}
// tail always points to new item
this.tail = item;
}
return this;
};
List.prototype.insertData = function(data, before) {
return this.insert(createItem(data), before);
};
List.prototype.remove = function(item) {
// item
// ^
// prev next
this.updateCursors(item, item.prev, item, item.next);
if (item.prev !== null) {
item.prev.next = item.next;
} else {
if (this.head !== item) {
throw new Error('item doesn\'t belong to list');
}
this.head = item.next;
}
if (item.next !== null) {
item.next.prev = item.prev;
} else {
if (this.tail !== item) {
throw new Error('item doesn\'t belong to list');
}
this.tail = item.prev;
}
item.prev = null;
item.next = null;
return item;
};
List.prototype.push = function(data) {
this.insert(createItem(data));
};
List.prototype.pop = function() {
if (this.tail !== null) {
return this.remove(this.tail);
}
};
List.prototype.unshift = function(data) {
this.prepend(createItem(data));
};
List.prototype.shift = function() {
if (this.head !== null) {
return this.remove(this.head);
}
};
List.prototype.prependList = function(list) {
return this.insertList(list, this.head);
};
List.prototype.appendList = function(list) {
return this.insertList(list);
};
List.prototype.insertList = function(list, before) {
// ignore empty lists
if (list.head === null) {
return this;
}
if (before !== undefined && before !== null) {
this.updateCursors(before.prev, list.tail, before, list.head);
// insert in the middle of dist list
if (before.prev !== null) {
// before.prev <-> list.head
before.prev.next = list.head;
list.head.prev = before.prev;
} else {
this.head = list.head;
}
before.prev = list.tail;
list.tail.next = before;
} else {
this.updateCursors(this.tail, list.tail, null, list.head);
// insert to end of the list
if (this.tail !== null) {
// if destination list has a tail, then it also has a head,
// but head doesn't change
// dest tail -> source head
this.tail.next = list.head;
// dest tail <- source head
list.head.prev = this.tail;
} else {
// if list has no a tail, then it also has no a head
// in this case points head to new item
this.head = list.head;
}
// tail always start point to new item
this.tail = list.tail;
}
list.head = null;
list.tail = null;
return this;
};
List.prototype.replace = function(oldItem, newItemOrList) {
if ('head' in newItemOrList) {
this.insertList(newItemOrList, oldItem);
} else {
this.insert(newItemOrList, oldItem);
}
this.remove(oldItem);
};
module.exports = List;

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var adoptBuffer = require('./adopt-buffer');
var isBOM = require('../tokenizer').isBOM;
var N = 10;
var F = 12;
var R = 13;
function computeLinesAndColumns(host, source) {
var sourceLength = source.length;
var lines = adoptBuffer(host.lines, sourceLength); // +1
var line = host.startLine;
var columns = adoptBuffer(host.columns, sourceLength);
var column = host.startColumn;
var startOffset = source.length > 0 ? isBOM(source.charCodeAt(0)) : 0;
for (var i = startOffset; i < sourceLength; i++) { // -1
var code = source.charCodeAt(i);
lines[i] = line;
columns[i] = column++;
if (code === N || code === R || code === F) {
if (code === R && i + 1 < sourceLength && source.charCodeAt(i + 1) === N) {
i++;
lines[i] = line;
columns[i] = column;
}
line++;
column = 1;
}
}
lines[i] = line;
columns[i] = column;
host.lines = lines;
host.columns = columns;
}
var OffsetToLocation = function() {
this.lines = null;
this.columns = null;
this.linesAndColumnsComputed = false;
};
OffsetToLocation.prototype = {
setSource: function(source, startOffset, startLine, startColumn) {
this.source = source;
this.startOffset = typeof startOffset === 'undefined' ? 0 : startOffset;
this.startLine = typeof startLine === 'undefined' ? 1 : startLine;
this.startColumn = typeof startColumn === 'undefined' ? 1 : startColumn;
this.linesAndColumnsComputed = false;
},
ensureLinesAndColumnsComputed: function() {
if (!this.linesAndColumnsComputed) {
computeLinesAndColumns(this, this.source);
this.linesAndColumnsComputed = true;
}
},
getLocation: function(offset, filename) {
this.ensureLinesAndColumnsComputed();
return {
source: filename,
offset: this.startOffset + offset,
line: this.lines[offset],
column: this.columns[offset]
};
},
getLocationRange: function(start, end, filename) {
this.ensureLinesAndColumnsComputed();
return {
source: filename,
start: {
offset: this.startOffset + start,
line: this.lines[start],
column: this.columns[start]
},
end: {
offset: this.startOffset + end,
line: this.lines[end],
column: this.columns[end]
}
};
}
};
module.exports = OffsetToLocation;

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web/node_modules/css-tree/lib/common/SyntaxError.js generated vendored Normal file
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var createCustomError = require('../utils/createCustomError');
var MAX_LINE_LENGTH = 100;
var OFFSET_CORRECTION = 60;
var TAB_REPLACEMENT = ' ';
function sourceFragment(error, extraLines) {
function processLines(start, end) {
return lines.slice(start, end).map(function(line, idx) {
var num = String(start + idx + 1);
while (num.length < maxNumLength) {
num = ' ' + num;
}
return num + ' |' + line;
}).join('\n');
}
var lines = error.source.split(/\r\n?|\n|\f/);
var line = error.line;
var column = error.column;
var startLine = Math.max(1, line - extraLines) - 1;
var endLine = Math.min(line + extraLines, lines.length + 1);
var maxNumLength = Math.max(4, String(endLine).length) + 1;
var cutLeft = 0;
// column correction according to replaced tab before column
column += (TAB_REPLACEMENT.length - 1) * (lines[line - 1].substr(0, column - 1).match(/\t/g) || []).length;
if (column > MAX_LINE_LENGTH) {
cutLeft = column - OFFSET_CORRECTION + 3;
column = OFFSET_CORRECTION - 2;
}
for (var i = startLine; i <= endLine; i++) {
if (i >= 0 && i < lines.length) {
lines[i] = lines[i].replace(/\t/g, TAB_REPLACEMENT);
lines[i] =
(cutLeft > 0 && lines[i].length > cutLeft ? '\u2026' : '') +
lines[i].substr(cutLeft, MAX_LINE_LENGTH - 2) +
(lines[i].length > cutLeft + MAX_LINE_LENGTH - 1 ? '\u2026' : '');
}
}
return [
processLines(startLine, line),
new Array(column + maxNumLength + 2).join('-') + '^',
processLines(line, endLine)
].filter(Boolean).join('\n');
}
var SyntaxError = function(message, source, offset, line, column) {
var error = createCustomError('SyntaxError', message);
error.source = source;
error.offset = offset;
error.line = line;
error.column = column;
error.sourceFragment = function(extraLines) {
return sourceFragment(error, isNaN(extraLines) ? 0 : extraLines);
};
Object.defineProperty(error, 'formattedMessage', {
get: function() {
return (
'Parse error: ' + error.message + '\n' +
sourceFragment(error, 2)
);
}
});
// for backward capability
error.parseError = {
offset: offset,
line: line,
column: column
};
return error;
};
module.exports = SyntaxError;

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web/node_modules/css-tree/lib/common/TokenStream.js generated vendored Normal file
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var constants = require('../tokenizer/const');
var TYPE = constants.TYPE;
var NAME = constants.NAME;
var utils = require('../tokenizer/utils');
var cmpStr = utils.cmpStr;
var EOF = TYPE.EOF;
var WHITESPACE = TYPE.WhiteSpace;
var COMMENT = TYPE.Comment;
var OFFSET_MASK = 0x00FFFFFF;
var TYPE_SHIFT = 24;
var TokenStream = function() {
this.offsetAndType = null;
this.balance = null;
this.reset();
};
TokenStream.prototype = {
reset: function() {
this.eof = false;
this.tokenIndex = -1;
this.tokenType = 0;
this.tokenStart = this.firstCharOffset;
this.tokenEnd = this.firstCharOffset;
},
lookupType: function(offset) {
offset += this.tokenIndex;
if (offset < this.tokenCount) {
return this.offsetAndType[offset] >> TYPE_SHIFT;
}
return EOF;
},
lookupOffset: function(offset) {
offset += this.tokenIndex;
if (offset < this.tokenCount) {
return this.offsetAndType[offset - 1] & OFFSET_MASK;
}
return this.source.length;
},
lookupValue: function(offset, referenceStr) {
offset += this.tokenIndex;
if (offset < this.tokenCount) {
return cmpStr(
this.source,
this.offsetAndType[offset - 1] & OFFSET_MASK,
this.offsetAndType[offset] & OFFSET_MASK,
referenceStr
);
}
return false;
},
getTokenStart: function(tokenIndex) {
if (tokenIndex === this.tokenIndex) {
return this.tokenStart;
}
if (tokenIndex > 0) {
return tokenIndex < this.tokenCount
? this.offsetAndType[tokenIndex - 1] & OFFSET_MASK
: this.offsetAndType[this.tokenCount] & OFFSET_MASK;
}
return this.firstCharOffset;
},
// TODO: -> skipUntilBalanced
getRawLength: function(startToken, mode) {
var cursor = startToken;
var balanceEnd;
var offset = this.offsetAndType[Math.max(cursor - 1, 0)] & OFFSET_MASK;
var type;
loop:
for (; cursor < this.tokenCount; cursor++) {
balanceEnd = this.balance[cursor];
// stop scanning on balance edge that points to offset before start token
if (balanceEnd < startToken) {
break loop;
}
type = this.offsetAndType[cursor] >> TYPE_SHIFT;
// check token is stop type
switch (mode(type, this.source, offset)) {
case 1:
break loop;
case 2:
cursor++;
break loop;
default:
offset = this.offsetAndType[cursor] & OFFSET_MASK;
// fast forward to the end of balanced block
if (this.balance[balanceEnd] === cursor) {
cursor = balanceEnd;
}
}
}
return cursor - this.tokenIndex;
},
isBalanceEdge: function(pos) {
return this.balance[this.tokenIndex] < pos;
},
isDelim: function(code, offset) {
if (offset) {
return (
this.lookupType(offset) === TYPE.Delim &&
this.source.charCodeAt(this.lookupOffset(offset)) === code
);
}
return (
this.tokenType === TYPE.Delim &&
this.source.charCodeAt(this.tokenStart) === code
);
},
getTokenValue: function() {
return this.source.substring(this.tokenStart, this.tokenEnd);
},
getTokenLength: function() {
return this.tokenEnd - this.tokenStart;
},
substrToCursor: function(start) {
return this.source.substring(start, this.tokenStart);
},
skipWS: function() {
for (var i = this.tokenIndex, skipTokenCount = 0; i < this.tokenCount; i++, skipTokenCount++) {
if ((this.offsetAndType[i] >> TYPE_SHIFT) !== WHITESPACE) {
break;
}
}
if (skipTokenCount > 0) {
this.skip(skipTokenCount);
}
},
skipSC: function() {
while (this.tokenType === WHITESPACE || this.tokenType === COMMENT) {
this.next();
}
},
skip: function(tokenCount) {
var next = this.tokenIndex + tokenCount;
if (next < this.tokenCount) {
this.tokenIndex = next;
this.tokenStart = this.offsetAndType[next - 1] & OFFSET_MASK;
next = this.offsetAndType[next];
this.tokenType = next >> TYPE_SHIFT;
this.tokenEnd = next & OFFSET_MASK;
} else {
this.tokenIndex = this.tokenCount;
this.next();
}
},
next: function() {
var next = this.tokenIndex + 1;
if (next < this.tokenCount) {
this.tokenIndex = next;
this.tokenStart = this.tokenEnd;
next = this.offsetAndType[next];
this.tokenType = next >> TYPE_SHIFT;
this.tokenEnd = next & OFFSET_MASK;
} else {
this.tokenIndex = this.tokenCount;
this.eof = true;
this.tokenType = EOF;
this.tokenStart = this.tokenEnd = this.source.length;
}
},
dump: function() {
var offset = this.firstCharOffset;
return Array.prototype.slice.call(this.offsetAndType, 0, this.tokenCount).map(function(item, idx) {
var start = offset;
var end = item & OFFSET_MASK;
offset = end;
return {
idx: idx,
type: NAME[item >> TYPE_SHIFT],
chunk: this.source.substring(start, end),
balance: this.balance[idx]
};
}, this);
}
};
module.exports = TokenStream;

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web/node_modules/css-tree/lib/common/adopt-buffer.js generated vendored Normal file
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var MIN_SIZE = 16 * 1024;
var SafeUint32Array = typeof Uint32Array !== 'undefined' ? Uint32Array : Array; // fallback on Array when TypedArray is not supported
module.exports = function adoptBuffer(buffer, size) {
if (buffer === null || buffer.length < size) {
return new SafeUint32Array(Math.max(size + 1024, MIN_SIZE));
}
return buffer;
};

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web/node_modules/css-tree/lib/convertor/create.js generated vendored Normal file
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var List = require('../common/List');
module.exports = function createConvertors(walk) {
return {
fromPlainObject: function(ast) {
walk(ast, {
enter: function(node) {
if (node.children && node.children instanceof List === false) {
node.children = new List().fromArray(node.children);
}
}
});
return ast;
},
toPlainObject: function(ast) {
walk(ast, {
leave: function(node) {
if (node.children && node.children instanceof List) {
node.children = node.children.toArray();
}
}
});
return ast;
}
};
};

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web/node_modules/css-tree/lib/convertor/index.js generated vendored Normal file
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var createConvertor = require('./create');
module.exports = createConvertor(require('../walker'));

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var createCustomError = require('../utils/createCustomError');
module.exports = function SyntaxError(message, input, offset) {
var error = createCustomError('SyntaxError', message);
error.input = input;
error.offset = offset;
error.rawMessage = message;
error.message = error.rawMessage + '\n' +
' ' + error.input + '\n' +
'--' + new Array((error.offset || error.input.length) + 1).join('-') + '^';
return error;
};

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function noop(value) {
return value;
}
function generateMultiplier(multiplier) {
if (multiplier.min === 0 && multiplier.max === 0) {
return '*';
}
if (multiplier.min === 0 && multiplier.max === 1) {
return '?';
}
if (multiplier.min === 1 && multiplier.max === 0) {
return multiplier.comma ? '#' : '+';
}
if (multiplier.min === 1 && multiplier.max === 1) {
return '';
}
return (
(multiplier.comma ? '#' : '') +
(multiplier.min === multiplier.max
? '{' + multiplier.min + '}'
: '{' + multiplier.min + ',' + (multiplier.max !== 0 ? multiplier.max : '') + '}'
)
);
}
function generateTypeOpts(node) {
switch (node.type) {
case 'Range':
return (
' [' +
(node.min === null ? '-∞' : node.min) +
',' +
(node.max === null ? '∞' : node.max) +
']'
);
default:
throw new Error('Unknown node type `' + node.type + '`');
}
}
function generateSequence(node, decorate, forceBraces, compact) {
var combinator = node.combinator === ' ' || compact ? node.combinator : ' ' + node.combinator + ' ';
var result = node.terms.map(function(term) {
return generate(term, decorate, forceBraces, compact);
}).join(combinator);
if (node.explicit || forceBraces) {
result = (compact || result[0] === ',' ? '[' : '[ ') + result + (compact ? ']' : ' ]');
}
return result;
}
function generate(node, decorate, forceBraces, compact) {
var result;
switch (node.type) {
case 'Group':
result =
generateSequence(node, decorate, forceBraces, compact) +
(node.disallowEmpty ? '!' : '');
break;
case 'Multiplier':
// return since node is a composition
return (
generate(node.term, decorate, forceBraces, compact) +
decorate(generateMultiplier(node), node)
);
case 'Type':
result = '<' + node.name + (node.opts ? decorate(generateTypeOpts(node.opts), node.opts) : '') + '>';
break;
case 'Property':
result = '<\'' + node.name + '\'>';
break;
case 'Keyword':
result = node.name;
break;
case 'AtKeyword':
result = '@' + node.name;
break;
case 'Function':
result = node.name + '(';
break;
case 'String':
case 'Token':
result = node.value;
break;
case 'Comma':
result = ',';
break;
default:
throw new Error('Unknown node type `' + node.type + '`');
}
return decorate(result, node);
}
module.exports = function(node, options) {
var decorate = noop;
var forceBraces = false;
var compact = false;
if (typeof options === 'function') {
decorate = options;
} else if (options) {
forceBraces = Boolean(options.forceBraces);
compact = Boolean(options.compact);
if (typeof options.decorate === 'function') {
decorate = options.decorate;
}
}
return generate(node, decorate, forceBraces, compact);
};

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@ -0,0 +1,6 @@
module.exports = {
SyntaxError: require('./SyntaxError'),
parse: require('./parse'),
generate: require('./generate'),
walk: require('./walk')
};

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@ -0,0 +1,568 @@
var Tokenizer = require('./tokenizer');
var TAB = 9;
var N = 10;
var F = 12;
var R = 13;
var SPACE = 32;
var EXCLAMATIONMARK = 33; // !
var NUMBERSIGN = 35; // #
var AMPERSAND = 38; // &
var APOSTROPHE = 39; // '
var LEFTPARENTHESIS = 40; // (
var RIGHTPARENTHESIS = 41; // )
var ASTERISK = 42; // *
var PLUSSIGN = 43; // +
var COMMA = 44; // ,
var HYPERMINUS = 45; // -
var LESSTHANSIGN = 60; // <
var GREATERTHANSIGN = 62; // >
var QUESTIONMARK = 63; // ?
var COMMERCIALAT = 64; // @
var LEFTSQUAREBRACKET = 91; // [
var RIGHTSQUAREBRACKET = 93; // ]
var LEFTCURLYBRACKET = 123; // {
var VERTICALLINE = 124; // |
var RIGHTCURLYBRACKET = 125; // }
var INFINITY = 8734; // ∞
var NAME_CHAR = createCharMap(function(ch) {
return /[a-zA-Z0-9\-]/.test(ch);
});
var COMBINATOR_PRECEDENCE = {
' ': 1,
'&&': 2,
'||': 3,
'|': 4
};
function createCharMap(fn) {
var array = typeof Uint32Array === 'function' ? new Uint32Array(128) : new Array(128);
for (var i = 0; i < 128; i++) {
array[i] = fn(String.fromCharCode(i)) ? 1 : 0;
}
return array;
}
function scanSpaces(tokenizer) {
return tokenizer.substringToPos(
tokenizer.findWsEnd(tokenizer.pos)
);
}
function scanWord(tokenizer) {
var end = tokenizer.pos;
for (; end < tokenizer.str.length; end++) {
var code = tokenizer.str.charCodeAt(end);
if (code >= 128 || NAME_CHAR[code] === 0) {
break;
}
}
if (tokenizer.pos === end) {
tokenizer.error('Expect a keyword');
}
return tokenizer.substringToPos(end);
}
function scanNumber(tokenizer) {
var end = tokenizer.pos;
for (; end < tokenizer.str.length; end++) {
var code = tokenizer.str.charCodeAt(end);
if (code < 48 || code > 57) {
break;
}
}
if (tokenizer.pos === end) {
tokenizer.error('Expect a number');
}
return tokenizer.substringToPos(end);
}
function scanString(tokenizer) {
var end = tokenizer.str.indexOf('\'', tokenizer.pos + 1);
if (end === -1) {
tokenizer.pos = tokenizer.str.length;
tokenizer.error('Expect an apostrophe');
}
return tokenizer.substringToPos(end + 1);
}
function readMultiplierRange(tokenizer) {
var min = null;
var max = null;
tokenizer.eat(LEFTCURLYBRACKET);
min = scanNumber(tokenizer);
if (tokenizer.charCode() === COMMA) {
tokenizer.pos++;
if (tokenizer.charCode() !== RIGHTCURLYBRACKET) {
max = scanNumber(tokenizer);
}
} else {
max = min;
}
tokenizer.eat(RIGHTCURLYBRACKET);
return {
min: Number(min),
max: max ? Number(max) : 0
};
}
function readMultiplier(tokenizer) {
var range = null;
var comma = false;
switch (tokenizer.charCode()) {
case ASTERISK:
tokenizer.pos++;
range = {
min: 0,
max: 0
};
break;
case PLUSSIGN:
tokenizer.pos++;
range = {
min: 1,
max: 0
};
break;
case QUESTIONMARK:
tokenizer.pos++;
range = {
min: 0,
max: 1
};
break;
case NUMBERSIGN:
tokenizer.pos++;
comma = true;
if (tokenizer.charCode() === LEFTCURLYBRACKET) {
range = readMultiplierRange(tokenizer);
} else {
range = {
min: 1,
max: 0
};
}
break;
case LEFTCURLYBRACKET:
range = readMultiplierRange(tokenizer);
break;
default:
return null;
}
return {
type: 'Multiplier',
comma: comma,
min: range.min,
max: range.max,
term: null
};
}
function maybeMultiplied(tokenizer, node) {
var multiplier = readMultiplier(tokenizer);
if (multiplier !== null) {
multiplier.term = node;
return multiplier;
}
return node;
}
function maybeToken(tokenizer) {
var ch = tokenizer.peek();
if (ch === '') {
return null;
}
return {
type: 'Token',
value: ch
};
}
function readProperty(tokenizer) {
var name;
tokenizer.eat(LESSTHANSIGN);
tokenizer.eat(APOSTROPHE);
name = scanWord(tokenizer);
tokenizer.eat(APOSTROPHE);
tokenizer.eat(GREATERTHANSIGN);
return maybeMultiplied(tokenizer, {
type: 'Property',
name: name
});
}
// https://drafts.csswg.org/css-values-3/#numeric-ranges
// 4.1. Range Restrictions and Range Definition Notation
//
// Range restrictions can be annotated in the numeric type notation using CSS bracketed
// range notation—[min,max]—within the angle brackets, after the identifying keyword,
// indicating a closed range between (and including) min and max.
// For example, <integer [0, 10]> indicates an integer between 0 and 10, inclusive.
function readTypeRange(tokenizer) {
// use null for Infinity to make AST format JSON serializable/deserializable
var min = null; // -Infinity
var max = null; // Infinity
var sign = 1;
tokenizer.eat(LEFTSQUAREBRACKET);
if (tokenizer.charCode() === HYPERMINUS) {
tokenizer.peek();
sign = -1;
}
if (sign == -1 && tokenizer.charCode() === INFINITY) {
tokenizer.peek();
} else {
min = sign * Number(scanNumber(tokenizer));
}
scanSpaces(tokenizer);
tokenizer.eat(COMMA);
scanSpaces(tokenizer);
if (tokenizer.charCode() === INFINITY) {
tokenizer.peek();
} else {
sign = 1;
if (tokenizer.charCode() === HYPERMINUS) {
tokenizer.peek();
sign = -1;
}
max = sign * Number(scanNumber(tokenizer));
}
tokenizer.eat(RIGHTSQUAREBRACKET);
// If no range is indicated, either by using the bracketed range notation
// or in the property description, then [−∞,∞] is assumed.
if (min === null && max === null) {
return null;
}
return {
type: 'Range',
min: min,
max: max
};
}
function readType(tokenizer) {
var name;
var opts = null;
tokenizer.eat(LESSTHANSIGN);
name = scanWord(tokenizer);
if (tokenizer.charCode() === LEFTPARENTHESIS &&
tokenizer.nextCharCode() === RIGHTPARENTHESIS) {
tokenizer.pos += 2;
name += '()';
}
if (tokenizer.charCodeAt(tokenizer.findWsEnd(tokenizer.pos)) === LEFTSQUAREBRACKET) {
scanSpaces(tokenizer);
opts = readTypeRange(tokenizer);
}
tokenizer.eat(GREATERTHANSIGN);
return maybeMultiplied(tokenizer, {
type: 'Type',
name: name,
opts: opts
});
}
function readKeywordOrFunction(tokenizer) {
var name;
name = scanWord(tokenizer);
if (tokenizer.charCode() === LEFTPARENTHESIS) {
tokenizer.pos++;
return {
type: 'Function',
name: name
};
}
return maybeMultiplied(tokenizer, {
type: 'Keyword',
name: name
});
}
function regroupTerms(terms, combinators) {
function createGroup(terms, combinator) {
return {
type: 'Group',
terms: terms,
combinator: combinator,
disallowEmpty: false,
explicit: false
};
}
combinators = Object.keys(combinators).sort(function(a, b) {
return COMBINATOR_PRECEDENCE[a] - COMBINATOR_PRECEDENCE[b];
});
while (combinators.length > 0) {
var combinator = combinators.shift();
for (var i = 0, subgroupStart = 0; i < terms.length; i++) {
var term = terms[i];
if (term.type === 'Combinator') {
if (term.value === combinator) {
if (subgroupStart === -1) {
subgroupStart = i - 1;
}
terms.splice(i, 1);
i--;
} else {
if (subgroupStart !== -1 && i - subgroupStart > 1) {
terms.splice(
subgroupStart,
i - subgroupStart,
createGroup(terms.slice(subgroupStart, i), combinator)
);
i = subgroupStart + 1;
}
subgroupStart = -1;
}
}
}
if (subgroupStart !== -1 && combinators.length) {
terms.splice(
subgroupStart,
i - subgroupStart,
createGroup(terms.slice(subgroupStart, i), combinator)
);
}
}
return combinator;
}
function readImplicitGroup(tokenizer) {
var terms = [];
var combinators = {};
var token;
var prevToken = null;
var prevTokenPos = tokenizer.pos;
while (token = peek(tokenizer)) {
if (token.type !== 'Spaces') {
if (token.type === 'Combinator') {
// check for combinator in group beginning and double combinator sequence
if (prevToken === null || prevToken.type === 'Combinator') {
tokenizer.pos = prevTokenPos;
tokenizer.error('Unexpected combinator');
}
combinators[token.value] = true;
} else if (prevToken !== null && prevToken.type !== 'Combinator') {
combinators[' '] = true; // a b
terms.push({
type: 'Combinator',
value: ' '
});
}
terms.push(token);
prevToken = token;
prevTokenPos = tokenizer.pos;
}
}
// check for combinator in group ending
if (prevToken !== null && prevToken.type === 'Combinator') {
tokenizer.pos -= prevTokenPos;
tokenizer.error('Unexpected combinator');
}
return {
type: 'Group',
terms: terms,
combinator: regroupTerms(terms, combinators) || ' ',
disallowEmpty: false,
explicit: false
};
}
function readGroup(tokenizer) {
var result;
tokenizer.eat(LEFTSQUAREBRACKET);
result = readImplicitGroup(tokenizer);
tokenizer.eat(RIGHTSQUAREBRACKET);
result.explicit = true;
if (tokenizer.charCode() === EXCLAMATIONMARK) {
tokenizer.pos++;
result.disallowEmpty = true;
}
return result;
}
function peek(tokenizer) {
var code = tokenizer.charCode();
if (code < 128 && NAME_CHAR[code] === 1) {
return readKeywordOrFunction(tokenizer);
}
switch (code) {
case RIGHTSQUAREBRACKET:
// don't eat, stop scan a group
break;
case LEFTSQUAREBRACKET:
return maybeMultiplied(tokenizer, readGroup(tokenizer));
case LESSTHANSIGN:
return tokenizer.nextCharCode() === APOSTROPHE
? readProperty(tokenizer)
: readType(tokenizer);
case VERTICALLINE:
return {
type: 'Combinator',
value: tokenizer.substringToPos(
tokenizer.nextCharCode() === VERTICALLINE
? tokenizer.pos + 2
: tokenizer.pos + 1
)
};
case AMPERSAND:
tokenizer.pos++;
tokenizer.eat(AMPERSAND);
return {
type: 'Combinator',
value: '&&'
};
case COMMA:
tokenizer.pos++;
return {
type: 'Comma'
};
case APOSTROPHE:
return maybeMultiplied(tokenizer, {
type: 'String',
value: scanString(tokenizer)
});
case SPACE:
case TAB:
case N:
case R:
case F:
return {
type: 'Spaces',
value: scanSpaces(tokenizer)
};
case COMMERCIALAT:
code = tokenizer.nextCharCode();
if (code < 128 && NAME_CHAR[code] === 1) {
tokenizer.pos++;
return {
type: 'AtKeyword',
name: scanWord(tokenizer)
};
}
return maybeToken(tokenizer);
case ASTERISK:
case PLUSSIGN:
case QUESTIONMARK:
case NUMBERSIGN:
case EXCLAMATIONMARK:
// prohibited tokens (used as a multiplier start)
break;
case LEFTCURLYBRACKET:
// LEFTCURLYBRACKET is allowed since mdn/data uses it w/o quoting
// check next char isn't a number, because it's likely a disjoined multiplier
code = tokenizer.nextCharCode();
if (code < 48 || code > 57) {
return maybeToken(tokenizer);
}
break;
default:
return maybeToken(tokenizer);
}
}
function parse(source) {
var tokenizer = new Tokenizer(source);
var result = readImplicitGroup(tokenizer);
if (tokenizer.pos !== source.length) {
tokenizer.error('Unexpected input');
}
// reduce redundant groups with single group term
if (result.terms.length === 1 && result.terms[0].type === 'Group') {
result = result.terms[0];
}
return result;
}
// warm up parse to elimitate code branches that never execute
// fix soft deoptimizations (insufficient type feedback)
parse('[a&&<b>#|<\'c\'>*||e() f{2} /,(% g#{1,2} h{2,})]!');
module.exports = parse;

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var SyntaxError = require('./SyntaxError');
var TAB = 9;
var N = 10;
var F = 12;
var R = 13;
var SPACE = 32;
var Tokenizer = function(str) {
this.str = str;
this.pos = 0;
};
Tokenizer.prototype = {
charCodeAt: function(pos) {
return pos < this.str.length ? this.str.charCodeAt(pos) : 0;
},
charCode: function() {
return this.charCodeAt(this.pos);
},
nextCharCode: function() {
return this.charCodeAt(this.pos + 1);
},
nextNonWsCode: function(pos) {
return this.charCodeAt(this.findWsEnd(pos));
},
findWsEnd: function(pos) {
for (; pos < this.str.length; pos++) {
var code = this.str.charCodeAt(pos);
if (code !== R && code !== N && code !== F && code !== SPACE && code !== TAB) {
break;
}
}
return pos;
},
substringToPos: function(end) {
return this.str.substring(this.pos, this.pos = end);
},
eat: function(code) {
if (this.charCode() !== code) {
this.error('Expect `' + String.fromCharCode(code) + '`');
}
this.pos++;
},
peek: function() {
return this.pos < this.str.length ? this.str.charAt(this.pos++) : '';
},
error: function(message) {
throw new SyntaxError(message, this.str, this.pos);
}
};
module.exports = Tokenizer;

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var noop = function() {};
function ensureFunction(value) {
return typeof value === 'function' ? value : noop;
}
module.exports = function(node, options, context) {
function walk(node) {
enter.call(context, node);
switch (node.type) {
case 'Group':
node.terms.forEach(walk);
break;
case 'Multiplier':
walk(node.term);
break;
case 'Type':
case 'Property':
case 'Keyword':
case 'AtKeyword':
case 'Function':
case 'String':
case 'Token':
case 'Comma':
break;
default:
throw new Error('Unknown type: ' + node.type);
}
leave.call(context, node);
}
var enter = noop;
var leave = noop;
if (typeof options === 'function') {
enter = options;
} else if (options) {
enter = ensureFunction(options.enter);
leave = ensureFunction(options.leave);
}
if (enter === noop && leave === noop) {
throw new Error('Neither `enter` nor `leave` walker handler is set or both aren\'t a function');
}
walk(node, context);
};

66
web/node_modules/css-tree/lib/generator/create.js generated vendored Normal file
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var sourceMap = require('./sourceMap');
var hasOwnProperty = Object.prototype.hasOwnProperty;
function processChildren(node, delimeter) {
var list = node.children;
var prev = null;
if (typeof delimeter !== 'function') {
list.forEach(this.node, this);
} else {
list.forEach(function(node) {
if (prev !== null) {
delimeter.call(this, prev);
}
this.node(node);
prev = node;
}, this);
}
}
module.exports = function createGenerator(config) {
function processNode(node) {
if (hasOwnProperty.call(types, node.type)) {
types[node.type].call(this, node);
} else {
throw new Error('Unknown node type: ' + node.type);
}
}
var types = {};
if (config.node) {
for (var name in config.node) {
types[name] = config.node[name].generate;
}
}
return function(node, options) {
var buffer = '';
var handlers = {
children: processChildren,
node: processNode,
chunk: function(chunk) {
buffer += chunk;
},
result: function() {
return buffer;
}
};
if (options) {
if (typeof options.decorator === 'function') {
handlers = options.decorator(handlers);
}
if (options.sourceMap) {
handlers = sourceMap(handlers);
}
}
handlers.node(node);
return handlers.result();
};
};

4
web/node_modules/css-tree/lib/generator/index.js generated vendored Normal file
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var createGenerator = require('./create');
var config = require('../syntax/config/parser');
module.exports = createGenerator(config);

95
web/node_modules/css-tree/lib/generator/sourceMap.js generated vendored Normal file
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var SourceMapGenerator = require('source-map/lib/source-map-generator').SourceMapGenerator;
var trackNodes = {
Atrule: true,
Selector: true,
Declaration: true
};
module.exports = function generateSourceMap(handlers) {
var map = new SourceMapGenerator();
var line = 1;
var column = 0;
var generated = {
line: 1,
column: 0
};
var original = {
line: 0, // should be zero to add first mapping
column: 0
};
var sourceMappingActive = false;
var activatedGenerated = {
line: 1,
column: 0
};
var activatedMapping = {
generated: activatedGenerated
};
var handlersNode = handlers.node;
handlers.node = function(node) {
if (node.loc && node.loc.start && trackNodes.hasOwnProperty(node.type)) {
var nodeLine = node.loc.start.line;
var nodeColumn = node.loc.start.column - 1;
if (original.line !== nodeLine ||
original.column !== nodeColumn) {
original.line = nodeLine;
original.column = nodeColumn;
generated.line = line;
generated.column = column;
if (sourceMappingActive) {
sourceMappingActive = false;
if (generated.line !== activatedGenerated.line ||
generated.column !== activatedGenerated.column) {
map.addMapping(activatedMapping);
}
}
sourceMappingActive = true;
map.addMapping({
source: node.loc.source,
original: original,
generated: generated
});
}
}
handlersNode.call(this, node);
if (sourceMappingActive && trackNodes.hasOwnProperty(node.type)) {
activatedGenerated.line = line;
activatedGenerated.column = column;
}
};
var handlersChunk = handlers.chunk;
handlers.chunk = function(chunk) {
for (var i = 0; i < chunk.length; i++) {
if (chunk.charCodeAt(i) === 10) { // \n
line++;
column = 0;
} else {
column++;
}
}
handlersChunk(chunk);
};
var handlersResult = handlers.result;
handlers.result = function() {
if (sourceMappingActive) {
map.addMapping(activatedMapping);
}
return {
css: handlersResult(),
map: map
};
};
return handlers;
};

1
web/node_modules/css-tree/lib/index.js generated vendored Normal file
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module.exports = require('./syntax');

322
web/node_modules/css-tree/lib/lexer/Lexer.js generated vendored Normal file
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var SyntaxReferenceError = require('./error').SyntaxReferenceError;
var MatchError = require('./error').MatchError;
var names = require('../utils/names');
var generic = require('./generic');
var parse = require('../definition-syntax/parse');
var generate = require('../definition-syntax/generate');
var walk = require('../definition-syntax/walk');
var prepareTokens = require('./prepare-tokens');
var buildMatchGraph = require('./match-graph').buildMatchGraph;
var matchAsTree = require('./match').matchAsTree;
var trace = require('./trace');
var search = require('./search');
var getStructureFromConfig = require('./structure').getStructureFromConfig;
var cssWideKeywords = buildMatchGraph('inherit | initial | unset');
var cssWideKeywordsWithExpression = buildMatchGraph('inherit | initial | unset | <-ms-legacy-expression>');
function dumpMapSyntax(map, compact, syntaxAsAst) {
var result = {};
for (var name in map) {
if (map[name].syntax) {
result[name] = syntaxAsAst
? map[name].syntax
: generate(map[name].syntax, { compact: compact });
}
}
return result;
}
function valueHasVar(tokens) {
for (var i = 0; i < tokens.length; i++) {
if (tokens[i].value.toLowerCase() === 'var(') {
return true;
}
}
return false;
}
function buildMatchResult(match, error, iterations) {
return {
matched: match,
iterations: iterations,
error: error,
getTrace: trace.getTrace,
isType: trace.isType,
isProperty: trace.isProperty,
isKeyword: trace.isKeyword
};
}
function matchSyntax(lexer, syntax, value, useCommon) {
var tokens = prepareTokens(value, lexer.syntax);
var result;
if (valueHasVar(tokens)) {
return buildMatchResult(null, new Error('Matching for a tree with var() is not supported'));
}
if (useCommon) {
result = matchAsTree(tokens, lexer.valueCommonSyntax, lexer);
}
if (!useCommon || !result.match) {
result = matchAsTree(tokens, syntax.match, lexer);
if (!result.match) {
return buildMatchResult(
null,
new MatchError(result.reason, syntax.syntax, value, result),
result.iterations
);
}
}
return buildMatchResult(result.match, null, result.iterations);
}
var Lexer = function(config, syntax, structure) {
this.valueCommonSyntax = cssWideKeywords;
this.syntax = syntax;
this.generic = false;
this.properties = {};
this.types = {};
this.structure = structure || getStructureFromConfig(config);
if (config) {
if (config.types) {
for (var name in config.types) {
this.addType_(name, config.types[name]);
}
}
if (config.generic) {
this.generic = true;
for (var name in generic) {
this.addType_(name, generic[name]);
}
}
if (config.properties) {
for (var name in config.properties) {
this.addProperty_(name, config.properties[name]);
}
}
}
};
Lexer.prototype = {
structure: {},
checkStructure: function(ast) {
function collectWarning(node, message) {
warns.push({
node: node,
message: message
});
}
var structure = this.structure;
var warns = [];
this.syntax.walk(ast, function(node) {
if (structure.hasOwnProperty(node.type)) {
structure[node.type].check(node, collectWarning);
} else {
collectWarning(node, 'Unknown node type `' + node.type + '`');
}
});
return warns.length ? warns : false;
},
createDescriptor: function(syntax, type, name) {
var ref = {
type: type,
name: name
};
var descriptor = {
type: type,
name: name,
syntax: null,
match: null
};
if (typeof syntax === 'function') {
descriptor.match = buildMatchGraph(syntax, ref);
} else {
if (typeof syntax === 'string') {
// lazy parsing on first access
Object.defineProperty(descriptor, 'syntax', {
get: function() {
Object.defineProperty(descriptor, 'syntax', {
value: parse(syntax)
});
return descriptor.syntax;
}
});
} else {
descriptor.syntax = syntax;
}
// lazy graph build on first access
Object.defineProperty(descriptor, 'match', {
get: function() {
Object.defineProperty(descriptor, 'match', {
value: buildMatchGraph(descriptor.syntax, ref)
});
return descriptor.match;
}
});
}
return descriptor;
},
addProperty_: function(name, syntax) {
this.properties[name] = this.createDescriptor(syntax, 'Property', name);
},
addType_: function(name, syntax) {
this.types[name] = this.createDescriptor(syntax, 'Type', name);
if (syntax === generic['-ms-legacy-expression']) {
this.valueCommonSyntax = cssWideKeywordsWithExpression;
}
},
matchDeclaration: function(node) {
if (node.type !== 'Declaration') {
return buildMatchResult(null, new Error('Not a Declaration node'));
}
return this.matchProperty(node.property, node.value);
},
matchProperty: function(propertyName, value) {
var property = names.property(propertyName);
// don't match syntax for a custom property
if (property.custom) {
return buildMatchResult(null, new Error('Lexer matching doesn\'t applicable for custom properties'));
}
var propertySyntax = property.vendor
? this.getProperty(property.name) || this.getProperty(property.basename)
: this.getProperty(property.name);
if (!propertySyntax) {
return buildMatchResult(null, new SyntaxReferenceError('Unknown property', propertyName));
}
return matchSyntax(this, propertySyntax, value, true);
},
matchType: function(typeName, value) {
var typeSyntax = this.getType(typeName);
if (!typeSyntax) {
return buildMatchResult(null, new SyntaxReferenceError('Unknown type', typeName));
}
return matchSyntax(this, typeSyntax, value, false);
},
match: function(syntax, value) {
if (typeof syntax !== 'string' && (!syntax || !syntax.type)) {
return buildMatchResult(null, new SyntaxReferenceError('Bad syntax'));
}
if (typeof syntax === 'string' || !syntax.match) {
syntax = this.createDescriptor(syntax, 'Type', 'anonymous');
}
return matchSyntax(this, syntax, value, false);
},
findValueFragments: function(propertyName, value, type, name) {
return search.matchFragments(this, value, this.matchProperty(propertyName, value), type, name);
},
findDeclarationValueFragments: function(declaration, type, name) {
return search.matchFragments(this, declaration.value, this.matchDeclaration(declaration), type, name);
},
findAllFragments: function(ast, type, name) {
var result = [];
this.syntax.walk(ast, {
visit: 'Declaration',
enter: function(declaration) {
result.push.apply(result, this.findDeclarationValueFragments(declaration, type, name));
}.bind(this)
});
return result;
},
getProperty: function(name) {
return this.properties.hasOwnProperty(name) ? this.properties[name] : null;
},
getType: function(name) {
return this.types.hasOwnProperty(name) ? this.types[name] : null;
},
validate: function() {
function validate(syntax, name, broken, descriptor) {
if (broken.hasOwnProperty(name)) {
return broken[name];
}
broken[name] = false;
if (descriptor.syntax !== null) {
walk(descriptor.syntax, function(node) {
if (node.type !== 'Type' && node.type !== 'Property') {
return;
}
var map = node.type === 'Type' ? syntax.types : syntax.properties;
var brokenMap = node.type === 'Type' ? brokenTypes : brokenProperties;
if (!map.hasOwnProperty(node.name) || validate(syntax, node.name, brokenMap, map[node.name])) {
broken[name] = true;
}
}, this);
}
}
var brokenTypes = {};
var brokenProperties = {};
for (var key in this.types) {
validate(this, key, brokenTypes, this.types[key]);
}
for (var key in this.properties) {
validate(this, key, brokenProperties, this.properties[key]);
}
brokenTypes = Object.keys(brokenTypes).filter(function(name) {
return brokenTypes[name];
});
brokenProperties = Object.keys(brokenProperties).filter(function(name) {
return brokenProperties[name];
});
if (brokenTypes.length || brokenProperties.length) {
return {
types: brokenTypes,
properties: brokenProperties
};
}
return null;
},
dump: function(syntaxAsAst, pretty) {
return {
generic: this.generic,
types: dumpMapSyntax(this.types, !pretty, syntaxAsAst),
properties: dumpMapSyntax(this.properties, !pretty, syntaxAsAst)
};
},
toString: function() {
return JSON.stringify(this.dump());
}
};
module.exports = Lexer;

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var createCustomError = require('../utils/createCustomError');
var generate = require('../definition-syntax/generate');
function fromMatchResult(matchResult) {
var tokens = matchResult.tokens;
var longestMatch = matchResult.longestMatch;
var node = longestMatch < tokens.length ? tokens[longestMatch].node : null;
var mismatchOffset = -1;
var entries = 0;
var css = '';
for (var i = 0; i < tokens.length; i++) {
if (i === longestMatch) {
mismatchOffset = css.length;
}
if (node !== null && tokens[i].node === node) {
if (i <= longestMatch) {
entries++;
} else {
entries = 0;
}
}
css += tokens[i].value;
}
return {
node: node,
css: css,
mismatchOffset: mismatchOffset === -1 ? css.length : mismatchOffset,
last: node === null || entries > 1
};
}
function getLocation(node, point) {
var loc = node && node.loc && node.loc[point];
if (loc) {
return {
offset: loc.offset,
line: loc.line,
column: loc.column
};
}
return null;
}
var SyntaxReferenceError = function(type, referenceName) {
var error = createCustomError(
'SyntaxReferenceError',
type + (referenceName ? ' `' + referenceName + '`' : '')
);
error.reference = referenceName;
return error;
};
var MatchError = function(message, syntax, node, matchResult) {
var error = createCustomError('SyntaxMatchError', message);
var details = fromMatchResult(matchResult);
var mismatchOffset = details.mismatchOffset || 0;
var badNode = details.node || node;
var end = getLocation(badNode, 'end');
var start = details.last ? end : getLocation(badNode, 'start');
var css = details.css;
error.rawMessage = message;
error.syntax = syntax ? generate(syntax) : '<generic>';
error.css = css;
error.mismatchOffset = mismatchOffset;
error.loc = {
source: (badNode && badNode.loc && badNode.loc.source) || '<unknown>',
start: start,
end: end
};
error.line = start ? start.line : undefined;
error.column = start ? start.column : undefined;
error.offset = start ? start.offset : undefined;
error.message = message + '\n' +
' syntax: ' + error.syntax + '\n' +
' value: ' + (error.css || '<empty string>') + '\n' +
' --------' + new Array(error.mismatchOffset + 1).join('-') + '^';
return error;
};
module.exports = {
SyntaxReferenceError: SyntaxReferenceError,
MatchError: MatchError
};

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var isDigit = require('../tokenizer').isDigit;
var cmpChar = require('../tokenizer').cmpChar;
var TYPE = require('../tokenizer').TYPE;
var DELIM = TYPE.Delim;
var WHITESPACE = TYPE.WhiteSpace;
var COMMENT = TYPE.Comment;
var IDENT = TYPE.Ident;
var NUMBER = TYPE.Number;
var DIMENSION = TYPE.Dimension;
var PLUSSIGN = 0x002B; // U+002B PLUS SIGN (+)
var HYPHENMINUS = 0x002D; // U+002D HYPHEN-MINUS (-)
var N = 0x006E; // U+006E LATIN SMALL LETTER N (n)
var DISALLOW_SIGN = true;
var ALLOW_SIGN = false;
function isDelim(token, code) {
return token !== null && token.type === DELIM && token.value.charCodeAt(0) === code;
}
function skipSC(token, offset, getNextToken) {
while (token !== null && (token.type === WHITESPACE || token.type === COMMENT)) {
token = getNextToken(++offset);
}
return offset;
}
function checkInteger(token, valueOffset, disallowSign, offset) {
if (!token) {
return 0;
}
var code = token.value.charCodeAt(valueOffset);
if (code === PLUSSIGN || code === HYPHENMINUS) {
if (disallowSign) {
// Number sign is not allowed
return 0;
}
valueOffset++;
}
for (; valueOffset < token.value.length; valueOffset++) {
if (!isDigit(token.value.charCodeAt(valueOffset))) {
// Integer is expected
return 0;
}
}
return offset + 1;
}
// ... <signed-integer>
// ... ['+' | '-'] <signless-integer>
function consumeB(token, offset_, getNextToken) {
var sign = false;
var offset = skipSC(token, offset_, getNextToken);
token = getNextToken(offset);
if (token === null) {
return offset_;
}
if (token.type !== NUMBER) {
if (isDelim(token, PLUSSIGN) || isDelim(token, HYPHENMINUS)) {
sign = true;
offset = skipSC(getNextToken(++offset), offset, getNextToken);
token = getNextToken(offset);
if (token === null && token.type !== NUMBER) {
return 0;
}
} else {
return offset_;
}
}
if (!sign) {
var code = token.value.charCodeAt(0);
if (code !== PLUSSIGN && code !== HYPHENMINUS) {
// Number sign is expected
return 0;
}
}
return checkInteger(token, sign ? 0 : 1, sign, offset);
}
// An+B microsyntax https://www.w3.org/TR/css-syntax-3/#anb
module.exports = function anPlusB(token, getNextToken) {
/* eslint-disable brace-style*/
var offset = 0;
if (!token) {
return 0;
}
// <integer>
if (token.type === NUMBER) {
return checkInteger(token, 0, ALLOW_SIGN, offset); // b
}
// -n
// -n <signed-integer>
// -n ['+' | '-'] <signless-integer>
// -n- <signless-integer>
// <dashndashdigit-ident>
else if (token.type === IDENT && token.value.charCodeAt(0) === HYPHENMINUS) {
// expect 1st char is N
if (!cmpChar(token.value, 1, N)) {
return 0;
}
switch (token.value.length) {
// -n
// -n <signed-integer>
// -n ['+' | '-'] <signless-integer>
case 2:
return consumeB(getNextToken(++offset), offset, getNextToken);
// -n- <signless-integer>
case 3:
if (token.value.charCodeAt(2) !== HYPHENMINUS) {
return 0;
}
offset = skipSC(getNextToken(++offset), offset, getNextToken);
token = getNextToken(offset);
return checkInteger(token, 0, DISALLOW_SIGN, offset);
// <dashndashdigit-ident>
default:
if (token.value.charCodeAt(2) !== HYPHENMINUS) {
return 0;
}
return checkInteger(token, 3, DISALLOW_SIGN, offset);
}
}
// '+'? n
// '+'? n <signed-integer>
// '+'? n ['+' | '-'] <signless-integer>
// '+'? n- <signless-integer>
// '+'? <ndashdigit-ident>
else if (token.type === IDENT || (isDelim(token, PLUSSIGN) && getNextToken(offset + 1).type === IDENT)) {
// just ignore a plus
if (token.type !== IDENT) {
token = getNextToken(++offset);
}
if (token === null || !cmpChar(token.value, 0, N)) {
return 0;
}
switch (token.value.length) {
// '+'? n
// '+'? n <signed-integer>
// '+'? n ['+' | '-'] <signless-integer>
case 1:
return consumeB(getNextToken(++offset), offset, getNextToken);
// '+'? n- <signless-integer>
case 2:
if (token.value.charCodeAt(1) !== HYPHENMINUS) {
return 0;
}
offset = skipSC(getNextToken(++offset), offset, getNextToken);
token = getNextToken(offset);
return checkInteger(token, 0, DISALLOW_SIGN, offset);
// '+'? <ndashdigit-ident>
default:
if (token.value.charCodeAt(1) !== HYPHENMINUS) {
return 0;
}
return checkInteger(token, 2, DISALLOW_SIGN, offset);
}
}
// <ndashdigit-dimension>
// <ndash-dimension> <signless-integer>
// <n-dimension>
// <n-dimension> <signed-integer>
// <n-dimension> ['+' | '-'] <signless-integer>
else if (token.type === DIMENSION) {
var code = token.value.charCodeAt(0);
var sign = code === PLUSSIGN || code === HYPHENMINUS ? 1 : 0;
for (var i = sign; i < token.value.length; i++) {
if (!isDigit(token.value.charCodeAt(i))) {
break;
}
}
if (i === sign) {
// Integer is expected
return 0;
}
if (!cmpChar(token.value, i, N)) {
return 0;
}
// <n-dimension>
// <n-dimension> <signed-integer>
// <n-dimension> ['+' | '-'] <signless-integer>
if (i + 1 === token.value.length) {
return consumeB(getNextToken(++offset), offset, getNextToken);
} else {
if (token.value.charCodeAt(i + 1) !== HYPHENMINUS) {
return 0;
}
// <ndash-dimension> <signless-integer>
if (i + 2 === token.value.length) {
offset = skipSC(getNextToken(++offset), offset, getNextToken);
token = getNextToken(offset);
return checkInteger(token, 0, DISALLOW_SIGN, offset);
}
// <ndashdigit-dimension>
else {
return checkInteger(token, i + 2, DISALLOW_SIGN, offset);
}
}
}
return 0;
};

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var isHexDigit = require('../tokenizer').isHexDigit;
var cmpChar = require('../tokenizer').cmpChar;
var TYPE = require('../tokenizer').TYPE;
var IDENT = TYPE.Ident;
var DELIM = TYPE.Delim;
var NUMBER = TYPE.Number;
var DIMENSION = TYPE.Dimension;
var PLUSSIGN = 0x002B; // U+002B PLUS SIGN (+)
var HYPHENMINUS = 0x002D; // U+002D HYPHEN-MINUS (-)
var QUESTIONMARK = 0x003F; // U+003F QUESTION MARK (?)
var U = 0x0075; // U+0075 LATIN SMALL LETTER U (u)
function isDelim(token, code) {
return token !== null && token.type === DELIM && token.value.charCodeAt(0) === code;
}
function startsWith(token, code) {
return token.value.charCodeAt(0) === code;
}
function hexSequence(token, offset, allowDash) {
for (var pos = offset, hexlen = 0; pos < token.value.length; pos++) {
var code = token.value.charCodeAt(pos);
if (code === HYPHENMINUS && allowDash && hexlen !== 0) {
if (hexSequence(token, offset + hexlen + 1, false) > 0) {
return 6; // dissallow following question marks
}
return 0; // dash at the ending of a hex sequence is not allowed
}
if (!isHexDigit(code)) {
return 0; // not a hex digit
}
if (++hexlen > 6) {
return 0; // too many hex digits
};
}
return hexlen;
}
function withQuestionMarkSequence(consumed, length, getNextToken) {
if (!consumed) {
return 0; // nothing consumed
}
while (isDelim(getNextToken(length), QUESTIONMARK)) {
if (++consumed > 6) {
return 0; // too many question marks
}
length++;
}
return length;
}
// https://drafts.csswg.org/css-syntax/#urange
// Informally, the <urange> production has three forms:
// U+0001
// Defines a range consisting of a single code point, in this case the code point "1".
// U+0001-00ff
// Defines a range of codepoints between the first and the second value, in this case
// the range between "1" and "ff" (255 in decimal) inclusive.
// U+00??
// Defines a range of codepoints where the "?" characters range over all hex digits,
// in this case defining the same as the value U+0000-00ff.
// In each form, a maximum of 6 digits is allowed for each hexadecimal number (if you treat "?" as a hexadecimal digit).
//
// <urange> =
// u '+' <ident-token> '?'* |
// u <dimension-token> '?'* |
// u <number-token> '?'* |
// u <number-token> <dimension-token> |
// u <number-token> <number-token> |
// u '+' '?'+
module.exports = function urange(token, getNextToken) {
var length = 0;
// should start with `u` or `U`
if (token === null || token.type !== IDENT || !cmpChar(token.value, 0, U)) {
return 0;
}
token = getNextToken(++length);
if (token === null) {
return 0;
}
// u '+' <ident-token> '?'*
// u '+' '?'+
if (isDelim(token, PLUSSIGN)) {
token = getNextToken(++length);
if (token === null) {
return 0;
}
if (token.type === IDENT) {
// u '+' <ident-token> '?'*
return withQuestionMarkSequence(hexSequence(token, 0, true), ++length, getNextToken);
}
if (isDelim(token, QUESTIONMARK)) {
// u '+' '?'+
return withQuestionMarkSequence(1, ++length, getNextToken);
}
// Hex digit or question mark is expected
return 0;
}
// u <number-token> '?'*
// u <number-token> <dimension-token>
// u <number-token> <number-token>
if (token.type === NUMBER) {
if (!startsWith(token, PLUSSIGN)) {
return 0;
}
var consumedHexLength = hexSequence(token, 1, true);
if (consumedHexLength === 0) {
return 0;
}
token = getNextToken(++length);
if (token === null) {
// u <number-token> <eof>
return length;
}
if (token.type === DIMENSION || token.type === NUMBER) {
// u <number-token> <dimension-token>
// u <number-token> <number-token>
if (!startsWith(token, HYPHENMINUS) || !hexSequence(token, 1, false)) {
return 0;
}
return length + 1;
}
// u <number-token> '?'*
return withQuestionMarkSequence(consumedHexLength, length, getNextToken);
}
// u <dimension-token> '?'*
if (token.type === DIMENSION) {
if (!startsWith(token, PLUSSIGN)) {
return 0;
}
return withQuestionMarkSequence(hexSequence(token, 1, true), ++length, getNextToken);
}
return 0;
};

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web/node_modules/css-tree/lib/lexer/generic.js generated vendored Normal file
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var tokenizer = require('../tokenizer');
var isIdentifierStart = tokenizer.isIdentifierStart;
var isHexDigit = tokenizer.isHexDigit;
var isDigit = tokenizer.isDigit;
var cmpStr = tokenizer.cmpStr;
var consumeNumber = tokenizer.consumeNumber;
var TYPE = tokenizer.TYPE;
var anPlusB = require('./generic-an-plus-b');
var urange = require('./generic-urange');
var cssWideKeywords = ['unset', 'initial', 'inherit'];
var calcFunctionNames = ['calc(', '-moz-calc(', '-webkit-calc('];
// https://www.w3.org/TR/css-values-3/#lengths
var LENGTH = {
// absolute length units
'px': true,
'mm': true,
'cm': true,
'in': true,
'pt': true,
'pc': true,
'q': true,
// relative length units
'em': true,
'ex': true,
'ch': true,
'rem': true,
// viewport-percentage lengths
'vh': true,
'vw': true,
'vmin': true,
'vmax': true,
'vm': true
};
var ANGLE = {
'deg': true,
'grad': true,
'rad': true,
'turn': true
};
var TIME = {
's': true,
'ms': true
};
var FREQUENCY = {
'hz': true,
'khz': true
};
// https://www.w3.org/TR/css-values-3/#resolution (https://drafts.csswg.org/css-values/#resolution)
var RESOLUTION = {
'dpi': true,
'dpcm': true,
'dppx': true,
'x': true // https://github.com/w3c/csswg-drafts/issues/461
};
// https://drafts.csswg.org/css-grid/#fr-unit
var FLEX = {
'fr': true
};
// https://www.w3.org/TR/css3-speech/#mixing-props-voice-volume
var DECIBEL = {
'db': true
};
// https://www.w3.org/TR/css3-speech/#voice-props-voice-pitch
var SEMITONES = {
'st': true
};
// safe char code getter
function charCode(str, index) {
return index < str.length ? str.charCodeAt(index) : 0;
}
function eqStr(actual, expected) {
return cmpStr(actual, 0, actual.length, expected);
}
function eqStrAny(actual, expected) {
for (var i = 0; i < expected.length; i++) {
if (eqStr(actual, expected[i])) {
return true;
}
}
return false;
}
// IE postfix hack, i.e. 123\0 or 123px\9
function isPostfixIeHack(str, offset) {
if (offset !== str.length - 2) {
return false;
}
return (
str.charCodeAt(offset) === 0x005C && // U+005C REVERSE SOLIDUS (\)
isDigit(str.charCodeAt(offset + 1))
);
}
function outOfRange(opts, value, numEnd) {
if (opts && opts.type === 'Range') {
var num = Number(
numEnd !== undefined && numEnd !== value.length
? value.substr(0, numEnd)
: value
);
if (isNaN(num)) {
return true;
}
if (opts.min !== null && num < opts.min) {
return true;
}
if (opts.max !== null && num > opts.max) {
return true;
}
}
return false;
}
function consumeFunction(token, getNextToken) {
var startIdx = token.index;
var length = 0;
// balanced token consuming
do {
length++;
if (token.balance <= startIdx) {
break;
}
} while (token = getNextToken(length));
return length;
}
// TODO: implement
// can be used wherever <length>, <frequency>, <angle>, <time>, <percentage>, <number>, or <integer> values are allowed
// https://drafts.csswg.org/css-values/#calc-notation
function calc(next) {
return function(token, getNextToken, opts) {
if (token === null) {
return 0;
}
if (token.type === TYPE.Function && eqStrAny(token.value, calcFunctionNames)) {
return consumeFunction(token, getNextToken);
}
return next(token, getNextToken, opts);
};
}
function tokenType(expectedTokenType) {
return function(token) {
if (token === null || token.type !== expectedTokenType) {
return 0;
}
return 1;
};
}
function func(name) {
name = name + '(';
return function(token, getNextToken) {
if (token !== null && eqStr(token.value, name)) {
return consumeFunction(token, getNextToken);
}
return 0;
};
}
// =========================
// Complex types
//
// https://drafts.csswg.org/css-values-4/#custom-idents
// 4.2. Author-defined Identifiers: the <custom-ident> type
// Some properties accept arbitrary author-defined identifiers as a component value.
// This generic data type is denoted by <custom-ident>, and represents any valid CSS identifier
// that would not be misinterpreted as a pre-defined keyword in that propertys value definition.
//
// See also: https://developer.mozilla.org/en-US/docs/Web/CSS/custom-ident
function customIdent(token) {
if (token === null || token.type !== TYPE.Ident) {
return 0;
}
var name = token.value.toLowerCase();
// The CSS-wide keywords are not valid <custom-ident>s
if (eqStrAny(name, cssWideKeywords)) {
return 0;
}
// The default keyword is reserved and is also not a valid <custom-ident>
if (eqStr(name, 'default')) {
return 0;
}
// TODO: ignore property specific keywords (as described https://developer.mozilla.org/en-US/docs/Web/CSS/custom-ident)
// Specifications using <custom-ident> must specify clearly what other keywords
// are excluded from <custom-ident>, if any—for example by saying that any pre-defined keywords
// in that propertys value definition are excluded. Excluded keywords are excluded
// in all ASCII case permutations.
return 1;
}
// https://drafts.csswg.org/css-variables/#typedef-custom-property-name
// A custom property is any property whose name starts with two dashes (U+002D HYPHEN-MINUS), like --foo.
// The <custom-property-name> production corresponds to this: its defined as any valid identifier
// that starts with two dashes, except -- itself, which is reserved for future use by CSS.
// NOTE: Current implementation treat `--` as a valid name since most (all?) major browsers treat it as valid.
function customPropertyName(token) {
// ... defined as any valid identifier
if (token === null || token.type !== TYPE.Ident) {
return 0;
}
// ... that starts with two dashes (U+002D HYPHEN-MINUS)
if (charCode(token.value, 0) !== 0x002D || charCode(token.value, 1) !== 0x002D) {
return 0;
}
return 1;
}
// https://drafts.csswg.org/css-color-4/#hex-notation
// The syntax of a <hex-color> is a <hash-token> token whose value consists of 3, 4, 6, or 8 hexadecimal digits.
// In other words, a hex color is written as a hash character, "#", followed by some number of digits 0-9 or
// letters a-f (the case of the letters doesnt matter - #00ff00 is identical to #00FF00).
function hexColor(token) {
if (token === null || token.type !== TYPE.Hash) {
return 0;
}
var length = token.value.length;
// valid values (length): #rgb (4), #rgba (5), #rrggbb (7), #rrggbbaa (9)
if (length !== 4 && length !== 5 && length !== 7 && length !== 9) {
return 0;
}
for (var i = 1; i < length; i++) {
if (!isHexDigit(token.value.charCodeAt(i))) {
return 0;
}
}
return 1;
}
function idSelector(token) {
if (token === null || token.type !== TYPE.Hash) {
return 0;
}
if (!isIdentifierStart(charCode(token.value, 1), charCode(token.value, 2), charCode(token.value, 3))) {
return 0;
}
return 1;
}
// https://drafts.csswg.org/css-syntax/#any-value
// It represents the entirety of what a valid declaration can have as its value.
function declarationValue(token, getNextToken) {
if (!token) {
return 0;
}
var length = 0;
var level = 0;
var startIdx = token.index;
// The <declaration-value> production matches any sequence of one or more tokens,
// so long as the sequence ...
scan:
do {
switch (token.type) {
// ... does not contain <bad-string-token>, <bad-url-token>,
case TYPE.BadString:
case TYPE.BadUrl:
break scan;
// ... unmatched <)-token>, <]-token>, or <}-token>,
case TYPE.RightCurlyBracket:
case TYPE.RightParenthesis:
case TYPE.RightSquareBracket:
if (token.balance > token.index || token.balance < startIdx) {
break scan;
}
level--;
break;
// ... or top-level <semicolon-token> tokens
case TYPE.Semicolon:
if (level === 0) {
break scan;
}
break;
// ... or <delim-token> tokens with a value of "!"
case TYPE.Delim:
if (token.value === '!' && level === 0) {
break scan;
}
break;
case TYPE.Function:
case TYPE.LeftParenthesis:
case TYPE.LeftSquareBracket:
case TYPE.LeftCurlyBracket:
level++;
break;
}
length++;
// until balance closing
if (token.balance <= startIdx) {
break;
}
} while (token = getNextToken(length));
return length;
}
// https://drafts.csswg.org/css-syntax/#any-value
// The <any-value> production is identical to <declaration-value>, but also
// allows top-level <semicolon-token> tokens and <delim-token> tokens
// with a value of "!". It represents the entirety of what valid CSS can be in any context.
function anyValue(token, getNextToken) {
if (!token) {
return 0;
}
var startIdx = token.index;
var length = 0;
// The <any-value> production matches any sequence of one or more tokens,
// so long as the sequence ...
scan:
do {
switch (token.type) {
// ... does not contain <bad-string-token>, <bad-url-token>,
case TYPE.BadString:
case TYPE.BadUrl:
break scan;
// ... unmatched <)-token>, <]-token>, or <}-token>,
case TYPE.RightCurlyBracket:
case TYPE.RightParenthesis:
case TYPE.RightSquareBracket:
if (token.balance > token.index || token.balance < startIdx) {
break scan;
}
break;
}
length++;
// until balance closing
if (token.balance <= startIdx) {
break;
}
} while (token = getNextToken(length));
return length;
}
// =========================
// Dimensions
//
function dimension(type) {
return function(token, getNextToken, opts) {
if (token === null || token.type !== TYPE.Dimension) {
return 0;
}
var numberEnd = consumeNumber(token.value, 0);
// check unit
if (type !== null) {
// check for IE postfix hack, i.e. 123px\0 or 123px\9
var reverseSolidusOffset = token.value.indexOf('\\', numberEnd);
var unit = reverseSolidusOffset === -1 || !isPostfixIeHack(token.value, reverseSolidusOffset)
? token.value.substr(numberEnd)
: token.value.substring(numberEnd, reverseSolidusOffset);
if (type.hasOwnProperty(unit.toLowerCase()) === false) {
return 0;
}
}
// check range if specified
if (outOfRange(opts, token.value, numberEnd)) {
return 0;
}
return 1;
};
}
// =========================
// Percentage
//
// §5.5. Percentages: the <percentage> type
// https://drafts.csswg.org/css-values-4/#percentages
function percentage(token, getNextToken, opts) {
// ... corresponds to the <percentage-token> production
if (token === null || token.type !== TYPE.Percentage) {
return 0;
}
// check range if specified
if (outOfRange(opts, token.value, token.value.length - 1)) {
return 0;
}
return 1;
}
// =========================
// Numeric
//
// https://drafts.csswg.org/css-values-4/#numbers
// The value <zero> represents a literal number with the value 0. Expressions that merely
// evaluate to a <number> with the value 0 (for example, calc(0)) do not match <zero>;
// only literal <number-token>s do.
function zero(next) {
if (typeof next !== 'function') {
next = function() {
return 0;
};
}
return function(token, getNextToken, opts) {
if (token !== null && token.type === TYPE.Number) {
if (Number(token.value) === 0) {
return 1;
}
}
return next(token, getNextToken, opts);
};
}
// § 5.3. Real Numbers: the <number> type
// https://drafts.csswg.org/css-values-4/#numbers
// Number values are denoted by <number>, and represent real numbers, possibly with a fractional component.
// ... It corresponds to the <number-token> production
function number(token, getNextToken, opts) {
if (token === null) {
return 0;
}
var numberEnd = consumeNumber(token.value, 0);
var isNumber = numberEnd === token.value.length;
if (!isNumber && !isPostfixIeHack(token.value, numberEnd)) {
return 0;
}
// check range if specified
if (outOfRange(opts, token.value, numberEnd)) {
return 0;
}
return 1;
}
// §5.2. Integers: the <integer> type
// https://drafts.csswg.org/css-values-4/#integers
function integer(token, getNextToken, opts) {
// ... corresponds to a subset of the <number-token> production
if (token === null || token.type !== TYPE.Number) {
return 0;
}
// The first digit of an integer may be immediately preceded by `-` or `+` to indicate the integers sign.
var i = token.value.charCodeAt(0) === 0x002B || // U+002B PLUS SIGN (+)
token.value.charCodeAt(0) === 0x002D ? 1 : 0; // U+002D HYPHEN-MINUS (-)
// When written literally, an integer is one or more decimal digits 0 through 9 ...
for (; i < token.value.length; i++) {
if (!isDigit(token.value.charCodeAt(i))) {
return 0;
}
}
// check range if specified
if (outOfRange(opts, token.value, i)) {
return 0;
}
return 1;
}
module.exports = {
// token types
'ident-token': tokenType(TYPE.Ident),
'function-token': tokenType(TYPE.Function),
'at-keyword-token': tokenType(TYPE.AtKeyword),
'hash-token': tokenType(TYPE.Hash),
'string-token': tokenType(TYPE.String),
'bad-string-token': tokenType(TYPE.BadString),
'url-token': tokenType(TYPE.Url),
'bad-url-token': tokenType(TYPE.BadUrl),
'delim-token': tokenType(TYPE.Delim),
'number-token': tokenType(TYPE.Number),
'percentage-token': tokenType(TYPE.Percentage),
'dimension-token': tokenType(TYPE.Dimension),
'whitespace-token': tokenType(TYPE.WhiteSpace),
'CDO-token': tokenType(TYPE.CDO),
'CDC-token': tokenType(TYPE.CDC),
'colon-token': tokenType(TYPE.Colon),
'semicolon-token': tokenType(TYPE.Semicolon),
'comma-token': tokenType(TYPE.Comma),
'[-token': tokenType(TYPE.LeftSquareBracket),
']-token': tokenType(TYPE.RightSquareBracket),
'(-token': tokenType(TYPE.LeftParenthesis),
')-token': tokenType(TYPE.RightParenthesis),
'{-token': tokenType(TYPE.LeftCurlyBracket),
'}-token': tokenType(TYPE.RightCurlyBracket),
// token type aliases
'string': tokenType(TYPE.String),
'ident': tokenType(TYPE.Ident),
// complex types
'custom-ident': customIdent,
'custom-property-name': customPropertyName,
'hex-color': hexColor,
'id-selector': idSelector, // element( <id-selector> )
'an-plus-b': anPlusB,
'urange': urange,
'declaration-value': declarationValue,
'any-value': anyValue,
// dimensions
'dimension': calc(dimension(null)),
'angle': calc(dimension(ANGLE)),
'decibel': calc(dimension(DECIBEL)),
'frequency': calc(dimension(FREQUENCY)),
'flex': calc(dimension(FLEX)),
'length': calc(zero(dimension(LENGTH))),
'resolution': calc(dimension(RESOLUTION)),
'semitones': calc(dimension(SEMITONES)),
'time': calc(dimension(TIME)),
// percentage
'percentage': calc(percentage),
// numeric
'zero': zero(),
'number': calc(number),
'integer': calc(integer),
// old IE stuff
'-ms-legacy-expression': func('expression')
};

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web/node_modules/css-tree/lib/lexer/index.js generated vendored Normal file
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module.exports = {
Lexer: require('./Lexer')
};

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var parse = require('../definition-syntax/parse');
var MATCH = { type: 'Match' };
var MISMATCH = { type: 'Mismatch' };
var DISALLOW_EMPTY = { type: 'DisallowEmpty' };
var LEFTPARENTHESIS = 40; // (
var RIGHTPARENTHESIS = 41; // )
function createCondition(match, thenBranch, elseBranch) {
// reduce node count
if (thenBranch === MATCH && elseBranch === MISMATCH) {
return match;
}
if (match === MATCH && thenBranch === MATCH && elseBranch === MATCH) {
return match;
}
if (match.type === 'If' && match.else === MISMATCH && thenBranch === MATCH) {
thenBranch = match.then;
match = match.match;
}
return {
type: 'If',
match: match,
then: thenBranch,
else: elseBranch
};
}
function isFunctionType(name) {
return (
name.length > 2 &&
name.charCodeAt(name.length - 2) === LEFTPARENTHESIS &&
name.charCodeAt(name.length - 1) === RIGHTPARENTHESIS
);
}
function isEnumCapatible(term) {
return (
term.type === 'Keyword' ||
term.type === 'AtKeyword' ||
term.type === 'Function' ||
term.type === 'Type' && isFunctionType(term.name)
);
}
function buildGroupMatchGraph(combinator, terms, atLeastOneTermMatched) {
switch (combinator) {
case ' ':
// Juxtaposing components means that all of them must occur, in the given order.
//
// a b c
// =
// match a
// then match b
// then match c
// then MATCH
// else MISMATCH
// else MISMATCH
// else MISMATCH
var result = MATCH;
for (var i = terms.length - 1; i >= 0; i--) {
var term = terms[i];
result = createCondition(
term,
result,
MISMATCH
);
};
return result;
case '|':
// A bar (|) separates two or more alternatives: exactly one of them must occur.
//
// a | b | c
// =
// match a
// then MATCH
// else match b
// then MATCH
// else match c
// then MATCH
// else MISMATCH
var result = MISMATCH;
var map = null;
for (var i = terms.length - 1; i >= 0; i--) {
var term = terms[i];
// reduce sequence of keywords into a Enum
if (isEnumCapatible(term)) {
if (map === null && i > 0 && isEnumCapatible(terms[i - 1])) {
map = Object.create(null);
result = createCondition(
{
type: 'Enum',
map: map
},
MATCH,
result
);
}
if (map !== null) {
var key = (isFunctionType(term.name) ? term.name.slice(0, -1) : term.name).toLowerCase();
if (key in map === false) {
map[key] = term;
continue;
}
}
}
map = null;
// create a new conditonal node
result = createCondition(
term,
MATCH,
result
);
};
return result;
case '&&':
// A double ampersand (&&) separates two or more components,
// all of which must occur, in any order.
// Use MatchOnce for groups with a large number of terms,
// since &&-groups produces at least N!-node trees
if (terms.length > 5) {
return {
type: 'MatchOnce',
terms: terms,
all: true
};
}
// Use a combination tree for groups with small number of terms
//
// a && b && c
// =
// match a
// then [b && c]
// else match b
// then [a && c]
// else match c
// then [a && b]
// else MISMATCH
//
// a && b
// =
// match a
// then match b
// then MATCH
// else MISMATCH
// else match b
// then match a
// then MATCH
// else MISMATCH
// else MISMATCH
var result = MISMATCH;
for (var i = terms.length - 1; i >= 0; i--) {
var term = terms[i];
var thenClause;
if (terms.length > 1) {
thenClause = buildGroupMatchGraph(
combinator,
terms.filter(function(newGroupTerm) {
return newGroupTerm !== term;
}),
false
);
} else {
thenClause = MATCH;
}
result = createCondition(
term,
thenClause,
result
);
};
return result;
case '||':
// A double bar (||) separates two or more options:
// one or more of them must occur, in any order.
// Use MatchOnce for groups with a large number of terms,
// since ||-groups produces at least N!-node trees
if (terms.length > 5) {
return {
type: 'MatchOnce',
terms: terms,
all: false
};
}
// Use a combination tree for groups with small number of terms
//
// a || b || c
// =
// match a
// then [b || c]
// else match b
// then [a || c]
// else match c
// then [a || b]
// else MISMATCH
//
// a || b
// =
// match a
// then match b
// then MATCH
// else MATCH
// else match b
// then match a
// then MATCH
// else MATCH
// else MISMATCH
var result = atLeastOneTermMatched ? MATCH : MISMATCH;
for (var i = terms.length - 1; i >= 0; i--) {
var term = terms[i];
var thenClause;
if (terms.length > 1) {
thenClause = buildGroupMatchGraph(
combinator,
terms.filter(function(newGroupTerm) {
return newGroupTerm !== term;
}),
true
);
} else {
thenClause = MATCH;
}
result = createCondition(
term,
thenClause,
result
);
};
return result;
}
}
function buildMultiplierMatchGraph(node) {
var result = MATCH;
var matchTerm = buildMatchGraph(node.term);
if (node.max === 0) {
// disable repeating of empty match to prevent infinite loop
matchTerm = createCondition(
matchTerm,
DISALLOW_EMPTY,
MISMATCH
);
// an occurrence count is not limited, make a cycle;
// to collect more terms on each following matching mismatch
result = createCondition(
matchTerm,
null, // will be a loop
MISMATCH
);
result.then = createCondition(
MATCH,
MATCH,
result // make a loop
);
if (node.comma) {
result.then.else = createCondition(
{ type: 'Comma', syntax: node },
result,
MISMATCH
);
}
} else {
// create a match node chain for [min .. max] interval with optional matches
for (var i = node.min || 1; i <= node.max; i++) {
if (node.comma && result !== MATCH) {
result = createCondition(
{ type: 'Comma', syntax: node },
result,
MISMATCH
);
}
result = createCondition(
matchTerm,
createCondition(
MATCH,
MATCH,
result
),
MISMATCH
);
}
}
if (node.min === 0) {
// allow zero match
result = createCondition(
MATCH,
MATCH,
result
);
} else {
// create a match node chain to collect [0 ... min - 1] required matches
for (var i = 0; i < node.min - 1; i++) {
if (node.comma && result !== MATCH) {
result = createCondition(
{ type: 'Comma', syntax: node },
result,
MISMATCH
);
}
result = createCondition(
matchTerm,
result,
MISMATCH
);
}
}
return result;
}
function buildMatchGraph(node) {
if (typeof node === 'function') {
return {
type: 'Generic',
fn: node
};
}
switch (node.type) {
case 'Group':
var result = buildGroupMatchGraph(
node.combinator,
node.terms.map(buildMatchGraph),
false
);
if (node.disallowEmpty) {
result = createCondition(
result,
DISALLOW_EMPTY,
MISMATCH
);
}
return result;
case 'Multiplier':
return buildMultiplierMatchGraph(node);
case 'Type':
case 'Property':
return {
type: node.type,
name: node.name,
syntax: node
};
case 'Keyword':
return {
type: node.type,
name: node.name.toLowerCase(),
syntax: node
};
case 'AtKeyword':
return {
type: node.type,
name: '@' + node.name.toLowerCase(),
syntax: node
};
case 'Function':
return {
type: node.type,
name: node.name.toLowerCase() + '(',
syntax: node
};
case 'String':
// convert a one char length String to a Token
if (node.value.length === 3) {
return {
type: 'Token',
value: node.value.charAt(1),
syntax: node
};
}
// otherwise use it as is
return {
type: node.type,
value: node.value.substr(1, node.value.length - 2).replace(/\\'/g, '\''),
syntax: node
};
case 'Token':
return {
type: node.type,
value: node.value,
syntax: node
};
case 'Comma':
return {
type: node.type,
syntax: node
};
default:
throw new Error('Unknown node type:', node.type);
}
}
module.exports = {
MATCH: MATCH,
MISMATCH: MISMATCH,
DISALLOW_EMPTY: DISALLOW_EMPTY,
buildMatchGraph: function(syntaxTree, ref) {
if (typeof syntaxTree === 'string') {
syntaxTree = parse(syntaxTree);
}
return {
type: 'MatchGraph',
match: buildMatchGraph(syntaxTree),
syntax: ref || null,
source: syntaxTree
};
}
};

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var hasOwnProperty = Object.prototype.hasOwnProperty;
var matchGraph = require('./match-graph');
var MATCH = matchGraph.MATCH;
var MISMATCH = matchGraph.MISMATCH;
var DISALLOW_EMPTY = matchGraph.DISALLOW_EMPTY;
var TYPE = require('../tokenizer/const').TYPE;
var STUB = 0;
var TOKEN = 1;
var OPEN_SYNTAX = 2;
var CLOSE_SYNTAX = 3;
var EXIT_REASON_MATCH = 'Match';
var EXIT_REASON_MISMATCH = 'Mismatch';
var EXIT_REASON_ITERATION_LIMIT = 'Maximum iteration number exceeded (please fill an issue on https://github.com/csstree/csstree/issues)';
var ITERATION_LIMIT = 15000;
var totalIterationCount = 0;
function reverseList(list) {
var prev = null;
var next = null;
var item = list;
while (item !== null) {
next = item.prev;
item.prev = prev;
prev = item;
item = next;
}
return prev;
}
function areStringsEqualCaseInsensitive(testStr, referenceStr) {
if (testStr.length !== referenceStr.length) {
return false;
}
for (var i = 0; i < testStr.length; i++) {
var testCode = testStr.charCodeAt(i);
var referenceCode = referenceStr.charCodeAt(i);
// testCode.toLowerCase() for U+0041 LATIN CAPITAL LETTER A (A) .. U+005A LATIN CAPITAL LETTER Z (Z).
if (testCode >= 0x0041 && testCode <= 0x005A) {
testCode = testCode | 32;
}
if (testCode !== referenceCode) {
return false;
}
}
return true;
}
function isCommaContextStart(token) {
if (token === null) {
return true;
}
return (
token.type === TYPE.Comma ||
token.type === TYPE.Function ||
token.type === TYPE.LeftParenthesis ||
token.type === TYPE.LeftSquareBracket ||
token.type === TYPE.LeftCurlyBracket ||
token.type === TYPE.Delim
);
}
function isCommaContextEnd(token) {
if (token === null) {
return true;
}
return (
token.type === TYPE.RightParenthesis ||
token.type === TYPE.RightSquareBracket ||
token.type === TYPE.RightCurlyBracket ||
token.type === TYPE.Delim
);
}
function internalMatch(tokens, state, syntaxes) {
function moveToNextToken() {
do {
tokenIndex++;
token = tokenIndex < tokens.length ? tokens[tokenIndex] : null;
} while (token !== null && (token.type === TYPE.WhiteSpace || token.type === TYPE.Comment));
}
function getNextToken(offset) {
var nextIndex = tokenIndex + offset;
return nextIndex < tokens.length ? tokens[nextIndex] : null;
}
function stateSnapshotFromSyntax(nextState, prev) {
return {
nextState: nextState,
matchStack: matchStack,
syntaxStack: syntaxStack,
thenStack: thenStack,
tokenIndex: tokenIndex,
prev: prev
};
}
function pushThenStack(nextState) {
thenStack = {
nextState: nextState,
matchStack: matchStack,
syntaxStack: syntaxStack,
prev: thenStack
};
}
function pushElseStack(nextState) {
elseStack = stateSnapshotFromSyntax(nextState, elseStack);
}
function addTokenToMatch() {
matchStack = {
type: TOKEN,
syntax: state.syntax,
token: token,
prev: matchStack
};
moveToNextToken();
syntaxStash = null;
if (tokenIndex > longestMatch) {
longestMatch = tokenIndex;
}
}
function openSyntax() {
syntaxStack = {
syntax: state.syntax,
opts: state.syntax.opts || (syntaxStack !== null && syntaxStack.opts) || null,
prev: syntaxStack
};
matchStack = {
type: OPEN_SYNTAX,
syntax: state.syntax,
token: matchStack.token,
prev: matchStack
};
}
function closeSyntax() {
if (matchStack.type === OPEN_SYNTAX) {
matchStack = matchStack.prev;
} else {
matchStack = {
type: CLOSE_SYNTAX,
syntax: syntaxStack.syntax,
token: matchStack.token,
prev: matchStack
};
}
syntaxStack = syntaxStack.prev;
}
var syntaxStack = null;
var thenStack = null;
var elseStack = null;
// null stashing allowed, nothing stashed
// false stashing disabled, nothing stashed
// anithing else fail stashable syntaxes, some syntax stashed
var syntaxStash = null;
var iterationCount = 0; // count iterations and prevent infinite loop
var exitReason = null;
var token = null;
var tokenIndex = -1;
var longestMatch = 0;
var matchStack = {
type: STUB,
syntax: null,
token: null,
prev: null
};
moveToNextToken();
while (exitReason === null && ++iterationCount < ITERATION_LIMIT) {
// function mapList(list, fn) {
// var result = [];
// while (list) {
// result.unshift(fn(list));
// list = list.prev;
// }
// return result;
// }
// console.log('--\n',
// '#' + iterationCount,
// require('util').inspect({
// match: mapList(matchStack, x => x.type === TOKEN ? x.token && x.token.value : x.syntax ? ({ [OPEN_SYNTAX]: '<', [CLOSE_SYNTAX]: '</' }[x.type] || x.type) + '!' + x.syntax.name : null),
// token: token && token.value,
// tokenIndex,
// syntax: syntax.type + (syntax.id ? ' #' + syntax.id : '')
// }, { depth: null })
// );
switch (state.type) {
case 'Match':
if (thenStack === null) {
// turn to MISMATCH when some tokens left unmatched
if (token !== null) {
// doesn't mismatch if just one token left and it's an IE hack
if (tokenIndex !== tokens.length - 1 || (token.value !== '\\0' && token.value !== '\\9')) {
state = MISMATCH;
break;
}
}
// break the main loop, return a result - MATCH
exitReason = EXIT_REASON_MATCH;
break;
}
// go to next syntax (`then` branch)
state = thenStack.nextState;
// check match is not empty
if (state === DISALLOW_EMPTY) {
if (thenStack.matchStack === matchStack) {
state = MISMATCH;
break;
} else {
state = MATCH;
}
}
// close syntax if needed
while (thenStack.syntaxStack !== syntaxStack) {
closeSyntax();
}
// pop stack
thenStack = thenStack.prev;
break;
case 'Mismatch':
// when some syntax is stashed
if (syntaxStash !== null && syntaxStash !== false) {
// there is no else branches or a branch reduce match stack
if (elseStack === null || tokenIndex > elseStack.tokenIndex) {
// restore state from the stash
elseStack = syntaxStash;
syntaxStash = false; // disable stashing
}
} else if (elseStack === null) {
// no else branches -> break the main loop
// return a result - MISMATCH
exitReason = EXIT_REASON_MISMATCH;
break;
}
// go to next syntax (`else` branch)
state = elseStack.nextState;
// restore all the rest stack states
thenStack = elseStack.thenStack;
syntaxStack = elseStack.syntaxStack;
matchStack = elseStack.matchStack;
tokenIndex = elseStack.tokenIndex;
token = tokenIndex < tokens.length ? tokens[tokenIndex] : null;
// pop stack
elseStack = elseStack.prev;
break;
case 'MatchGraph':
state = state.match;
break;
case 'If':
// IMPORTANT: else stack push must go first,
// since it stores the state of thenStack before changes
if (state.else !== MISMATCH) {
pushElseStack(state.else);
}
if (state.then !== MATCH) {
pushThenStack(state.then);
}
state = state.match;
break;
case 'MatchOnce':
state = {
type: 'MatchOnceBuffer',
syntax: state,
index: 0,
mask: 0
};
break;
case 'MatchOnceBuffer':
var terms = state.syntax.terms;
if (state.index === terms.length) {
// no matches at all or it's required all terms to be matched
if (state.mask === 0 || state.syntax.all) {
state = MISMATCH;
break;
}
// a partial match is ok
state = MATCH;
break;
}
// all terms are matched
if (state.mask === (1 << terms.length) - 1) {
state = MATCH;
break;
}
for (; state.index < terms.length; state.index++) {
var matchFlag = 1 << state.index;
if ((state.mask & matchFlag) === 0) {
// IMPORTANT: else stack push must go first,
// since it stores the state of thenStack before changes
pushElseStack(state);
pushThenStack({
type: 'AddMatchOnce',
syntax: state.syntax,
mask: state.mask | matchFlag
});
// match
state = terms[state.index++];
break;
}
}
break;
case 'AddMatchOnce':
state = {
type: 'MatchOnceBuffer',
syntax: state.syntax,
index: 0,
mask: state.mask
};
break;
case 'Enum':
if (token !== null) {
var name = token.value.toLowerCase();
// drop \0 and \9 hack from keyword name
if (name.indexOf('\\') !== -1) {
name = name.replace(/\\[09].*$/, '');
}
if (hasOwnProperty.call(state.map, name)) {
state = state.map[name];
break;
}
}
state = MISMATCH;
break;
case 'Generic':
var opts = syntaxStack !== null ? syntaxStack.opts : null;
var lastTokenIndex = tokenIndex + Math.floor(state.fn(token, getNextToken, opts));
if (!isNaN(lastTokenIndex) && lastTokenIndex > tokenIndex) {
while (tokenIndex < lastTokenIndex) {
addTokenToMatch();
}
state = MATCH;
} else {
state = MISMATCH;
}
break;
case 'Type':
case 'Property':
var syntaxDict = state.type === 'Type' ? 'types' : 'properties';
var dictSyntax = hasOwnProperty.call(syntaxes, syntaxDict) ? syntaxes[syntaxDict][state.name] : null;
if (!dictSyntax || !dictSyntax.match) {
throw new Error(
'Bad syntax reference: ' +
(state.type === 'Type'
? '<' + state.name + '>'
: '<\'' + state.name + '\'>')
);
}
// stash a syntax for types with low priority
if (syntaxStash !== false && token !== null && state.type === 'Type') {
var lowPriorityMatching =
// https://drafts.csswg.org/css-values-4/#custom-idents
// When parsing positionally-ambiguous keywords in a property value, a <custom-ident> production
// can only claim the keyword if no other unfulfilled production can claim it.
(state.name === 'custom-ident' && token.type === TYPE.Ident) ||
// https://drafts.csswg.org/css-values-4/#lengths
// ... if a `0` could be parsed as either a <number> or a <length> in a property (such as line-height),
// it must parse as a <number>
(state.name === 'length' && token.value === '0');
if (lowPriorityMatching) {
if (syntaxStash === null) {
syntaxStash = stateSnapshotFromSyntax(state, elseStack);
}
state = MISMATCH;
break;
}
}
openSyntax();
state = dictSyntax.match;
break;
case 'Keyword':
var name = state.name;
if (token !== null) {
var keywordName = token.value;
// drop \0 and \9 hack from keyword name
if (keywordName.indexOf('\\') !== -1) {
keywordName = keywordName.replace(/\\[09].*$/, '');
}
if (areStringsEqualCaseInsensitive(keywordName, name)) {
addTokenToMatch();
state = MATCH;
break;
}
}
state = MISMATCH;
break;
case 'AtKeyword':
case 'Function':
if (token !== null && areStringsEqualCaseInsensitive(token.value, state.name)) {
addTokenToMatch();
state = MATCH;
break;
}
state = MISMATCH;
break;
case 'Token':
if (token !== null && token.value === state.value) {
addTokenToMatch();
state = MATCH;
break;
}
state = MISMATCH;
break;
case 'Comma':
if (token !== null && token.type === TYPE.Comma) {
if (isCommaContextStart(matchStack.token)) {
state = MISMATCH;
} else {
addTokenToMatch();
state = isCommaContextEnd(token) ? MISMATCH : MATCH;
}
} else {
state = isCommaContextStart(matchStack.token) || isCommaContextEnd(token) ? MATCH : MISMATCH;
}
break;
case 'String':
var string = '';
for (var lastTokenIndex = tokenIndex; lastTokenIndex < tokens.length && string.length < state.value.length; lastTokenIndex++) {
string += tokens[lastTokenIndex].value;
}
if (areStringsEqualCaseInsensitive(string, state.value)) {
while (tokenIndex < lastTokenIndex) {
addTokenToMatch();
}
state = MATCH;
} else {
state = MISMATCH;
}
break;
default:
throw new Error('Unknown node type: ' + state.type);
}
}
totalIterationCount += iterationCount;
switch (exitReason) {
case null:
console.warn('[csstree-match] BREAK after ' + ITERATION_LIMIT + ' iterations');
exitReason = EXIT_REASON_ITERATION_LIMIT;
matchStack = null;
break;
case EXIT_REASON_MATCH:
while (syntaxStack !== null) {
closeSyntax();
}
break;
default:
matchStack = null;
}
return {
tokens: tokens,
reason: exitReason,
iterations: iterationCount,
match: matchStack,
longestMatch: longestMatch
};
}
function matchAsList(tokens, matchGraph, syntaxes) {
var matchResult = internalMatch(tokens, matchGraph, syntaxes || {});
if (matchResult.match !== null) {
var item = reverseList(matchResult.match).prev;
matchResult.match = [];
while (item !== null) {
switch (item.type) {
case STUB:
break;
case OPEN_SYNTAX:
case CLOSE_SYNTAX:
matchResult.match.push({
type: item.type,
syntax: item.syntax
});
break;
default:
matchResult.match.push({
token: item.token.value,
node: item.token.node
});
break;
}
item = item.prev;
}
}
return matchResult;
}
function matchAsTree(tokens, matchGraph, syntaxes) {
var matchResult = internalMatch(tokens, matchGraph, syntaxes || {});
if (matchResult.match === null) {
return matchResult;
}
var item = matchResult.match;
var host = matchResult.match = {
syntax: matchGraph.syntax || null,
match: []
};
var hostStack = [host];
// revert a list and start with 2nd item since 1st is a stub item
item = reverseList(item).prev;
// build a tree
while (item !== null) {
switch (item.type) {
case OPEN_SYNTAX:
host.match.push(host = {
syntax: item.syntax,
match: []
});
hostStack.push(host);
break;
case CLOSE_SYNTAX:
hostStack.pop();
host = hostStack[hostStack.length - 1];
break;
default:
host.match.push({
syntax: item.syntax || null,
token: item.token.value,
node: item.token.node
});
}
item = item.prev;
}
return matchResult;
}
module.exports = {
matchAsList: matchAsList,
matchAsTree: matchAsTree,
getTotalIterationCount: function() {
return totalIterationCount;
}
};

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web/node_modules/css-tree/lib/lexer/prepare-tokens.js generated vendored Normal file
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var tokenize = require('../tokenizer');
var TokenStream = require('../common/TokenStream');
var tokenStream = new TokenStream();
var astToTokens = {
decorator: function(handlers) {
var curNode = null;
var prev = { len: 0, node: null };
var nodes = [prev];
var buffer = '';
return {
children: handlers.children,
node: function(node) {
var tmp = curNode;
curNode = node;
handlers.node.call(this, node);
curNode = tmp;
},
chunk: function(chunk) {
buffer += chunk;
if (prev.node !== curNode) {
nodes.push({
len: chunk.length,
node: curNode
});
} else {
prev.len += chunk.length;
}
},
result: function() {
return prepareTokens(buffer, nodes);
}
};
}
};
function prepareTokens(str, nodes) {
var tokens = [];
var nodesOffset = 0;
var nodesIndex = 0;
var currentNode = nodes ? nodes[nodesIndex].node : null;
tokenize(str, tokenStream);
while (!tokenStream.eof) {
if (nodes) {
while (nodesIndex < nodes.length && nodesOffset + nodes[nodesIndex].len <= tokenStream.tokenStart) {
nodesOffset += nodes[nodesIndex++].len;
currentNode = nodes[nodesIndex].node;
}
}
tokens.push({
type: tokenStream.tokenType,
value: tokenStream.getTokenValue(),
index: tokenStream.tokenIndex, // TODO: remove it, temporary solution
balance: tokenStream.balance[tokenStream.tokenIndex], // TODO: remove it, temporary solution
node: currentNode
});
tokenStream.next();
// console.log({ ...tokens[tokens.length - 1], node: undefined });
}
return tokens;
}
module.exports = function(value, syntax) {
if (typeof value === 'string') {
return prepareTokens(value, null);
}
return syntax.generate(value, astToTokens);
};

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web/node_modules/css-tree/lib/lexer/search.js generated vendored Normal file
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var List = require('../common/List');
function getFirstMatchNode(matchNode) {
if ('node' in matchNode) {
return matchNode.node;
}
return getFirstMatchNode(matchNode.match[0]);
}
function getLastMatchNode(matchNode) {
if ('node' in matchNode) {
return matchNode.node;
}
return getLastMatchNode(matchNode.match[matchNode.match.length - 1]);
}
function matchFragments(lexer, ast, match, type, name) {
function findFragments(matchNode) {
if (matchNode.syntax !== null &&
matchNode.syntax.type === type &&
matchNode.syntax.name === name) {
var start = getFirstMatchNode(matchNode);
var end = getLastMatchNode(matchNode);
lexer.syntax.walk(ast, function(node, item, list) {
if (node === start) {
var nodes = new List();
do {
nodes.appendData(item.data);
if (item.data === end) {
break;
}
item = item.next;
} while (item !== null);
fragments.push({
parent: list,
nodes: nodes
});
}
});
}
if (Array.isArray(matchNode.match)) {
matchNode.match.forEach(findFragments);
}
}
var fragments = [];
if (match.matched !== null) {
findFragments(match.matched);
}
return fragments;
}
module.exports = {
matchFragments: matchFragments
};

163
web/node_modules/css-tree/lib/lexer/structure.js generated vendored Normal file
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var List = require('../common/List');
var hasOwnProperty = Object.prototype.hasOwnProperty;
function isValidNumber(value) {
// Number.isInteger(value) && value >= 0
return (
typeof value === 'number' &&
isFinite(value) &&
Math.floor(value) === value &&
value >= 0
);
}
function isValidLocation(loc) {
return (
Boolean(loc) &&
isValidNumber(loc.offset) &&
isValidNumber(loc.line) &&
isValidNumber(loc.column)
);
}
function createNodeStructureChecker(type, fields) {
return function checkNode(node, warn) {
if (!node || node.constructor !== Object) {
return warn(node, 'Type of node should be an Object');
}
for (var key in node) {
var valid = true;
if (hasOwnProperty.call(node, key) === false) {
continue;
}
if (key === 'type') {
if (node.type !== type) {
warn(node, 'Wrong node type `' + node.type + '`, expected `' + type + '`');
}
} else if (key === 'loc') {
if (node.loc === null) {
continue;
} else if (node.loc && node.loc.constructor === Object) {
if (typeof node.loc.source !== 'string') {
key += '.source';
} else if (!isValidLocation(node.loc.start)) {
key += '.start';
} else if (!isValidLocation(node.loc.end)) {
key += '.end';
} else {
continue;
}
}
valid = false;
} else if (fields.hasOwnProperty(key)) {
for (var i = 0, valid = false; !valid && i < fields[key].length; i++) {
var fieldType = fields[key][i];
switch (fieldType) {
case String:
valid = typeof node[key] === 'string';
break;
case Boolean:
valid = typeof node[key] === 'boolean';
break;
case null:
valid = node[key] === null;
break;
default:
if (typeof fieldType === 'string') {
valid = node[key] && node[key].type === fieldType;
} else if (Array.isArray(fieldType)) {
valid = node[key] instanceof List;
}
}
}
} else {
warn(node, 'Unknown field `' + key + '` for ' + type + ' node type');
}
if (!valid) {
warn(node, 'Bad value for `' + type + '.' + key + '`');
}
}
for (var key in fields) {
if (hasOwnProperty.call(fields, key) &&
hasOwnProperty.call(node, key) === false) {
warn(node, 'Field `' + type + '.' + key + '` is missed');
}
}
};
}
function processStructure(name, nodeType) {
var structure = nodeType.structure;
var fields = {
type: String,
loc: true
};
var docs = {
type: '"' + name + '"'
};
for (var key in structure) {
if (hasOwnProperty.call(structure, key) === false) {
continue;
}
var docsTypes = [];
var fieldTypes = fields[key] = Array.isArray(structure[key])
? structure[key].slice()
: [structure[key]];
for (var i = 0; i < fieldTypes.length; i++) {
var fieldType = fieldTypes[i];
if (fieldType === String || fieldType === Boolean) {
docsTypes.push(fieldType.name);
} else if (fieldType === null) {
docsTypes.push('null');
} else if (typeof fieldType === 'string') {
docsTypes.push('<' + fieldType + '>');
} else if (Array.isArray(fieldType)) {
docsTypes.push('List'); // TODO: use type enum
} else {
throw new Error('Wrong value `' + fieldType + '` in `' + name + '.' + key + '` structure definition');
}
}
docs[key] = docsTypes.join(' | ');
}
return {
docs: docs,
check: createNodeStructureChecker(name, fields)
};
}
module.exports = {
getStructureFromConfig: function(config) {
var structure = {};
if (config.node) {
for (var name in config.node) {
if (hasOwnProperty.call(config.node, name)) {
var nodeType = config.node[name];
if (nodeType.structure) {
structure[name] = processStructure(name, nodeType);
} else {
throw new Error('Missed `structure` field in `' + name + '` node type definition');
}
}
}
}
return structure;
}
};

79
web/node_modules/css-tree/lib/lexer/trace.js generated vendored Normal file
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function getTrace(node) {
function shouldPutToTrace(syntax) {
if (syntax === null) {
return false;
}
return (
syntax.type === 'Type' ||
syntax.type === 'Property' ||
syntax.type === 'Keyword'
);
}
function hasMatch(matchNode) {
if (Array.isArray(matchNode.match)) {
// use for-loop for better perfomance
for (var i = 0; i < matchNode.match.length; i++) {
if (hasMatch(matchNode.match[i])) {
if (shouldPutToTrace(matchNode.syntax)) {
result.unshift(matchNode.syntax);
}
return true;
}
}
} else if (matchNode.node === node) {
result = shouldPutToTrace(matchNode.syntax)
? [matchNode.syntax]
: [];
return true;
}
return false;
}
var result = null;
if (this.matched !== null) {
hasMatch(this.matched);
}
return result;
}
function testNode(match, node, fn) {
var trace = getTrace.call(match, node);
if (trace === null) {
return false;
}
return trace.some(fn);
}
function isType(node, type) {
return testNode(this, node, function(matchNode) {
return matchNode.type === 'Type' && matchNode.name === type;
});
}
function isProperty(node, property) {
return testNode(this, node, function(matchNode) {
return matchNode.type === 'Property' && matchNode.name === property;
});
}
function isKeyword(node) {
return testNode(this, node, function(matchNode) {
return matchNode.type === 'Keyword';
});
}
module.exports = {
getTrace: getTrace,
isType: isType,
isProperty: isProperty,
isKeyword: isKeyword
};

289
web/node_modules/css-tree/lib/parser/create.js generated vendored Normal file
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var OffsetToLocation = require('../common/OffsetToLocation');
var SyntaxError = require('../common/SyntaxError');
var TokenStream = require('../common/TokenStream');
var List = require('../common/List');
var tokenize = require('../tokenizer');
var constants = require('../tokenizer/const');
var findWhiteSpaceStart = require('../tokenizer/utils').findWhiteSpaceStart;
var sequence = require('./sequence');
var noop = function() {};
var TYPE = constants.TYPE;
var NAME = constants.NAME;
var WHITESPACE = TYPE.WhiteSpace;
var IDENT = TYPE.Ident;
var FUNCTION = TYPE.Function;
var URL = TYPE.Url;
var HASH = TYPE.Hash;
var PERCENTAGE = TYPE.Percentage;
var NUMBER = TYPE.Number;
var NUMBERSIGN = 0x0023; // U+0023 NUMBER SIGN (#)
var NULL = 0;
function createParseContext(name) {
return function() {
return this[name]();
};
}
function processConfig(config) {
var parserConfig = {
context: {},
scope: {},
atrule: {},
pseudo: {}
};
if (config.parseContext) {
for (var name in config.parseContext) {
switch (typeof config.parseContext[name]) {
case 'function':
parserConfig.context[name] = config.parseContext[name];
break;
case 'string':
parserConfig.context[name] = createParseContext(config.parseContext[name]);
break;
}
}
}
if (config.scope) {
for (var name in config.scope) {
parserConfig.scope[name] = config.scope[name];
}
}
if (config.atrule) {
for (var name in config.atrule) {
var atrule = config.atrule[name];
if (atrule.parse) {
parserConfig.atrule[name] = atrule.parse;
}
}
}
if (config.pseudo) {
for (var name in config.pseudo) {
var pseudo = config.pseudo[name];
if (pseudo.parse) {
parserConfig.pseudo[name] = pseudo.parse;
}
}
}
if (config.node) {
for (var name in config.node) {
parserConfig[name] = config.node[name].parse;
}
}
return parserConfig;
}
module.exports = function createParser(config) {
var parser = {
scanner: new TokenStream(),
locationMap: new OffsetToLocation(),
filename: '<unknown>',
needPositions: false,
onParseError: noop,
onParseErrorThrow: false,
parseAtrulePrelude: true,
parseRulePrelude: true,
parseValue: true,
parseCustomProperty: false,
readSequence: sequence,
createList: function() {
return new List();
},
createSingleNodeList: function(node) {
return new List().appendData(node);
},
getFirstListNode: function(list) {
return list && list.first();
},
getLastListNode: function(list) {
return list.last();
},
parseWithFallback: function(consumer, fallback) {
var startToken = this.scanner.tokenIndex;
try {
return consumer.call(this);
} catch (e) {
if (this.onParseErrorThrow) {
throw e;
}
var fallbackNode = fallback.call(this, startToken);
this.onParseErrorThrow = true;
this.onParseError(e, fallbackNode);
this.onParseErrorThrow = false;
return fallbackNode;
}
},
lookupNonWSType: function(offset) {
do {
var type = this.scanner.lookupType(offset++);
if (type !== WHITESPACE) {
return type;
}
} while (type !== NULL);
return NULL;
},
eat: function(tokenType) {
if (this.scanner.tokenType !== tokenType) {
var offset = this.scanner.tokenStart;
var message = NAME[tokenType] + ' is expected';
// tweak message and offset
switch (tokenType) {
case IDENT:
// when identifier is expected but there is a function or url
if (this.scanner.tokenType === FUNCTION || this.scanner.tokenType === URL) {
offset = this.scanner.tokenEnd - 1;
message = 'Identifier is expected but function found';
} else {
message = 'Identifier is expected';
}
break;
case HASH:
if (this.scanner.isDelim(NUMBERSIGN)) {
this.scanner.next();
offset++;
message = 'Name is expected';
}
break;
case PERCENTAGE:
if (this.scanner.tokenType === NUMBER) {
offset = this.scanner.tokenEnd;
message = 'Percent sign is expected';
}
break;
default:
// when test type is part of another token show error for current position + 1
// e.g. eat(HYPHENMINUS) will fail on "-foo", but pointing on "-" is odd
if (this.scanner.source.charCodeAt(this.scanner.tokenStart) === tokenType) {
offset = offset + 1;
}
}
this.error(message, offset);
}
this.scanner.next();
},
consume: function(tokenType) {
var value = this.scanner.getTokenValue();
this.eat(tokenType);
return value;
},
consumeFunctionName: function() {
var name = this.scanner.source.substring(this.scanner.tokenStart, this.scanner.tokenEnd - 1);
this.eat(FUNCTION);
return name;
},
getLocation: function(start, end) {
if (this.needPositions) {
return this.locationMap.getLocationRange(
start,
end,
this.filename
);
}
return null;
},
getLocationFromList: function(list) {
if (this.needPositions) {
var head = this.getFirstListNode(list);
var tail = this.getLastListNode(list);
return this.locationMap.getLocationRange(
head !== null ? head.loc.start.offset - this.locationMap.startOffset : this.scanner.tokenStart,
tail !== null ? tail.loc.end.offset - this.locationMap.startOffset : this.scanner.tokenStart,
this.filename
);
}
return null;
},
error: function(message, offset) {
var location = typeof offset !== 'undefined' && offset < this.scanner.source.length
? this.locationMap.getLocation(offset)
: this.scanner.eof
? this.locationMap.getLocation(findWhiteSpaceStart(this.scanner.source, this.scanner.source.length - 1))
: this.locationMap.getLocation(this.scanner.tokenStart);
throw new SyntaxError(
message || 'Unexpected input',
this.scanner.source,
location.offset,
location.line,
location.column
);
}
};
config = processConfig(config || {});
for (var key in config) {
parser[key] = config[key];
}
return function(source, options) {
options = options || {};
var context = options.context || 'default';
var ast;
tokenize(source, parser.scanner);
parser.locationMap.setSource(
source,
options.offset,
options.line,
options.column
);
parser.filename = options.filename || '<unknown>';
parser.needPositions = Boolean(options.positions);
parser.onParseError = typeof options.onParseError === 'function' ? options.onParseError : noop;
parser.onParseErrorThrow = false;
parser.parseAtrulePrelude = 'parseAtrulePrelude' in options ? Boolean(options.parseAtrulePrelude) : true;
parser.parseRulePrelude = 'parseRulePrelude' in options ? Boolean(options.parseRulePrelude) : true;
parser.parseValue = 'parseValue' in options ? Boolean(options.parseValue) : true;
parser.parseCustomProperty = 'parseCustomProperty' in options ? Boolean(options.parseCustomProperty) : false;
if (!parser.context.hasOwnProperty(context)) {
throw new Error('Unknown context `' + context + '`');
}
ast = parser.context[context].call(parser, options);
if (!parser.scanner.eof) {
parser.error();
}
return ast;
};
};

4
web/node_modules/css-tree/lib/parser/index.js generated vendored Normal file
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var createParser = require('./create');
var config = require('../syntax/config/parser');
module.exports = createParser(config);

54
web/node_modules/css-tree/lib/parser/sequence.js generated vendored Normal file
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var TYPE = require('../tokenizer').TYPE;
var WHITESPACE = TYPE.WhiteSpace;
var COMMENT = TYPE.Comment;
module.exports = function readSequence(recognizer) {
var children = this.createList();
var child = null;
var context = {
recognizer: recognizer,
space: null,
ignoreWS: false,
ignoreWSAfter: false
};
this.scanner.skipSC();
while (!this.scanner.eof) {
switch (this.scanner.tokenType) {
case COMMENT:
this.scanner.next();
continue;
case WHITESPACE:
if (context.ignoreWS) {
this.scanner.next();
} else {
context.space = this.WhiteSpace();
}
continue;
}
child = recognizer.getNode.call(this, context);
if (child === undefined) {
break;
}
if (context.space !== null) {
children.push(context.space);
context.space = null;
}
children.push(child);
if (context.ignoreWSAfter) {
context.ignoreWSAfter = false;
context.ignoreWS = true;
} else {
context.ignoreWS = false;
}
}
return children;
};

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module.exports = {
parse: {
prelude: null,
block: function() {
return this.Block(true);
}
}
};

40
web/node_modules/css-tree/lib/syntax/atrule/import.js generated vendored Normal file
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var TYPE = require('../../tokenizer').TYPE;
var STRING = TYPE.String;
var IDENT = TYPE.Ident;
var URL = TYPE.Url;
var FUNCTION = TYPE.Function;
var LEFTPARENTHESIS = TYPE.LeftParenthesis;
module.exports = {
parse: {
prelude: function() {
var children = this.createList();
this.scanner.skipSC();
switch (this.scanner.tokenType) {
case STRING:
children.push(this.String());
break;
case URL:
case FUNCTION:
children.push(this.Url());
break;
default:
this.error('String or url() is expected');
}
if (this.lookupNonWSType(0) === IDENT ||
this.lookupNonWSType(0) === LEFTPARENTHESIS) {
children.push(this.WhiteSpace());
children.push(this.MediaQueryList());
}
return children;
},
block: null
}
};

7
web/node_modules/css-tree/lib/syntax/atrule/index.js generated vendored Normal file
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module.exports = {
'font-face': require('./font-face'),
'import': require('./import'),
'media': require('./media'),
'page': require('./page'),
'supports': require('./supports')
};

12
web/node_modules/css-tree/lib/syntax/atrule/media.js generated vendored Normal file
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module.exports = {
parse: {
prelude: function() {
return this.createSingleNodeList(
this.MediaQueryList()
);
},
block: function() {
return this.Block(false);
}
}
};

12
web/node_modules/css-tree/lib/syntax/atrule/page.js generated vendored Normal file
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module.exports = {
parse: {
prelude: function() {
return this.createSingleNodeList(
this.SelectorList()
);
},
block: function() {
return this.Block(true);
}
}
};

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var TYPE = require('../../tokenizer').TYPE;
var WHITESPACE = TYPE.WhiteSpace;
var COMMENT = TYPE.Comment;
var IDENT = TYPE.Ident;
var FUNCTION = TYPE.Function;
var COLON = TYPE.Colon;
var LEFTPARENTHESIS = TYPE.LeftParenthesis;
function consumeRaw() {
return this.createSingleNodeList(
this.Raw(this.scanner.tokenIndex, null, false)
);
}
function parentheses() {
this.scanner.skipSC();
if (this.scanner.tokenType === IDENT &&
this.lookupNonWSType(1) === COLON) {
return this.createSingleNodeList(
this.Declaration()
);
}
return readSequence.call(this);
}
function readSequence() {
var children = this.createList();
var space = null;
var child;
this.scanner.skipSC();
scan:
while (!this.scanner.eof) {
switch (this.scanner.tokenType) {
case WHITESPACE:
space = this.WhiteSpace();
continue;
case COMMENT:
this.scanner.next();
continue;
case FUNCTION:
child = this.Function(consumeRaw, this.scope.AtrulePrelude);
break;
case IDENT:
child = this.Identifier();
break;
case LEFTPARENTHESIS:
child = this.Parentheses(parentheses, this.scope.AtrulePrelude);
break;
default:
break scan;
}
if (space !== null) {
children.push(space);
space = null;
}
children.push(child);
}
return children;
}
module.exports = {
parse: {
prelude: function() {
var children = readSequence.call(this);
if (this.getFirstListNode(children) === null) {
this.error('Condition is expected');
}
return children;
},
block: function() {
return this.Block(false);
}
}
};

8
web/node_modules/css-tree/lib/syntax/config/lexer.js generated vendored Normal file
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var data = require('../../../data');
module.exports = {
generic: true,
types: data.types,
properties: data.properties,
node: require('../node')
};

94
web/node_modules/css-tree/lib/syntax/config/mix.js generated vendored Normal file
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var hasOwnProperty = Object.prototype.hasOwnProperty;
var shape = {
generic: true,
types: {},
properties: {},
parseContext: {},
scope: {},
atrule: ['parse'],
pseudo: ['parse'],
node: ['name', 'structure', 'parse', 'generate', 'walkContext']
};
function isObject(value) {
return value && value.constructor === Object;
}
function copy(value) {
if (isObject(value)) {
var res = {};
for (var key in value) {
if (hasOwnProperty.call(value, key)) {
res[key] = value[key];
}
}
return res;
} else {
return value;
}
}
function extend(dest, src) {
for (var key in src) {
if (hasOwnProperty.call(src, key)) {
if (isObject(dest[key])) {
extend(dest[key], copy(src[key]));
} else {
dest[key] = copy(src[key]);
}
}
}
}
function mix(dest, src, shape) {
for (var key in shape) {
if (hasOwnProperty.call(shape, key) === false) {
continue;
}
if (shape[key] === true) {
if (key in src) {
if (hasOwnProperty.call(src, key)) {
dest[key] = copy(src[key]);
}
}
} else if (shape[key]) {
if (isObject(shape[key])) {
var res = {};
extend(res, dest[key]);
extend(res, src[key]);
dest[key] = res;
} else if (Array.isArray(shape[key])) {
var res = {};
var innerShape = shape[key].reduce(function(s, k) {
s[k] = true;
return s;
}, {});
for (var name in dest[key]) {
if (hasOwnProperty.call(dest[key], name)) {
res[name] = {};
if (dest[key] && dest[key][name]) {
mix(res[name], dest[key][name], innerShape);
}
}
}
for (var name in src[key]) {
if (hasOwnProperty.call(src[key], name)) {
if (!res[name]) {
res[name] = {};
}
if (src[key] && src[key][name]) {
mix(res[name], src[key][name], innerShape);
}
}
}
dest[key] = res;
}
}
}
return dest;
}
module.exports = function(dest, src) {
return mix(dest, src, shape);
};

25
web/node_modules/css-tree/lib/syntax/config/parser.js generated vendored Normal file
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module.exports = {
parseContext: {
default: 'StyleSheet',
stylesheet: 'StyleSheet',
atrule: 'Atrule',
atrulePrelude: function(options) {
return this.AtrulePrelude(options.atrule ? String(options.atrule) : null);
},
mediaQueryList: 'MediaQueryList',
mediaQuery: 'MediaQuery',
rule: 'Rule',
selectorList: 'SelectorList',
selector: 'Selector',
block: function() {
return this.Block(true);
},
declarationList: 'DeclarationList',
declaration: 'Declaration',
value: 'Value'
},
scope: require('../scope'),
atrule: require('../atrule'),
pseudo: require('../pseudo'),
node: require('../node')
};

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module.exports = {
node: require('../node')
};

84
web/node_modules/css-tree/lib/syntax/create.js generated vendored Normal file
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var List = require('../common/List');
var SyntaxError = require('../common/SyntaxError');
var TokenStream = require('../common/TokenStream');
var Lexer = require('../lexer/Lexer');
var definitionSyntax = require('../definition-syntax');
var tokenize = require('../tokenizer');
var createParser = require('../parser/create');
var createGenerator = require('../generator/create');
var createConvertor = require('../convertor/create');
var createWalker = require('../walker/create');
var clone = require('../utils/clone');
var names = require('../utils/names');
var mix = require('./config/mix');
function assign(dest, src) {
for (var key in src) {
dest[key] = src[key];
}
return dest;
}
function createSyntax(config) {
var parse = createParser(config);
var walk = createWalker(config);
var generate = createGenerator(config);
var convert = createConvertor(walk);
var syntax = {
List: List,
SyntaxError: SyntaxError,
TokenStream: TokenStream,
Lexer: Lexer,
vendorPrefix: names.vendorPrefix,
keyword: names.keyword,
property: names.property,
isCustomProperty: names.isCustomProperty,
definitionSyntax: definitionSyntax,
lexer: null,
createLexer: function(config) {
return new Lexer(config, syntax, syntax.lexer.structure);
},
tokenize: tokenize,
parse: parse,
walk: walk,
generate: generate,
find: walk.find,
findLast: walk.findLast,
findAll: walk.findAll,
clone: clone,
fromPlainObject: convert.fromPlainObject,
toPlainObject: convert.toPlainObject,
createSyntax: function(config) {
return createSyntax(mix({}, config));
},
fork: function(extension) {
var base = mix({}, config); // copy of config
return createSyntax(
typeof extension === 'function'
? extension(base, assign)
: mix(base, extension)
);
}
};
syntax.lexer = new Lexer({
generic: true,
types: config.types,
properties: config.properties,
node: config.node
}, syntax);
return syntax;
};
exports.create = function(config) {
return createSyntax(mix({}, config));
};

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// https://drafts.csswg.org/css-images-4/#element-notation
// https://developer.mozilla.org/en-US/docs/Web/CSS/element
module.exports = function() {
this.scanner.skipSC();
var children = this.createSingleNodeList(
this.IdSelector()
);
this.scanner.skipSC();
return children;
};

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// legacy IE function
// expression( <any-value> )
module.exports = function() {
return this.createSingleNodeList(
this.Raw(this.scanner.tokenIndex, null, false)
);
};

26
web/node_modules/css-tree/lib/syntax/function/var.js generated vendored Normal file
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var TYPE = require('../../tokenizer').TYPE;
var rawMode = require('../node/Raw').mode;
var COMMA = TYPE.Comma;
// var( <ident> , <value>? )
module.exports = function() {
var children = this.createList();
this.scanner.skipSC();
// NOTE: Don't check more than a first argument is an ident, rest checks are for lexer
children.push(this.Identifier());
this.scanner.skipSC();
if (this.scanner.tokenType === COMMA) {
children.push(this.Operator());
children.push(this.parseCustomProperty
? this.Value(null)
: this.Raw(this.scanner.tokenIndex, rawMode.exclamationMarkOrSemicolon, false)
);
}
return children;
};

20
web/node_modules/css-tree/lib/syntax/index.js generated vendored Normal file
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function merge() {
var dest = {};
for (var i = 0; i < arguments.length; i++) {
var src = arguments[i];
for (var key in src) {
dest[key] = src[key];
}
}
return dest;
}
module.exports = require('./create').create(
merge(
require('./config/lexer'),
require('./config/parser'),
require('./config/walker')
)
);

297
web/node_modules/css-tree/lib/syntax/node/AnPlusB.js generated vendored Normal file
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var cmpChar = require('../../tokenizer').cmpChar;
var isDigit = require('../../tokenizer').isDigit;
var TYPE = require('../../tokenizer').TYPE;
var WHITESPACE = TYPE.WhiteSpace;
var COMMENT = TYPE.Comment;
var IDENT = TYPE.Ident;
var NUMBER = TYPE.Number;
var DIMENSION = TYPE.Dimension;
var PLUSSIGN = 0x002B; // U+002B PLUS SIGN (+)
var HYPHENMINUS = 0x002D; // U+002D HYPHEN-MINUS (-)
var N = 0x006E; // U+006E LATIN SMALL LETTER N (n)
var DISALLOW_SIGN = true;
var ALLOW_SIGN = false;
function checkInteger(offset, disallowSign) {
var pos = this.scanner.tokenStart + offset;
var code = this.scanner.source.charCodeAt(pos);
if (code === PLUSSIGN || code === HYPHENMINUS) {
if (disallowSign) {
this.error('Number sign is not allowed');
}
pos++;
}
for (; pos < this.scanner.tokenEnd; pos++) {
if (!isDigit(this.scanner.source.charCodeAt(pos))) {
this.error('Integer is expected', pos);
}
}
}
function checkTokenIsInteger(disallowSign) {
return checkInteger.call(this, 0, disallowSign);
}
function expectCharCode(offset, code) {
if (!cmpChar(this.scanner.source, this.scanner.tokenStart + offset, code)) {
var msg = '';
switch (code) {
case N:
msg = 'N is expected';
break;
case HYPHENMINUS:
msg = 'HyphenMinus is expected';
break;
}
this.error(msg, this.scanner.tokenStart + offset);
}
}
// ... <signed-integer>
// ... ['+' | '-'] <signless-integer>
function consumeB() {
var offset = 0;
var sign = 0;
var type = this.scanner.tokenType;
while (type === WHITESPACE || type === COMMENT) {
type = this.scanner.lookupType(++offset);
}
if (type !== NUMBER) {
if (this.scanner.isDelim(PLUSSIGN, offset) ||
this.scanner.isDelim(HYPHENMINUS, offset)) {
sign = this.scanner.isDelim(PLUSSIGN, offset) ? PLUSSIGN : HYPHENMINUS;
do {
type = this.scanner.lookupType(++offset);
} while (type === WHITESPACE || type === COMMENT);
if (type !== NUMBER) {
this.scanner.skip(offset);
checkTokenIsInteger.call(this, DISALLOW_SIGN);
}
} else {
return null;
}
}
if (offset > 0) {
this.scanner.skip(offset);
}
if (sign === 0) {
type = this.scanner.source.charCodeAt(this.scanner.tokenStart);
if (type !== PLUSSIGN && type !== HYPHENMINUS) {
this.error('Number sign is expected');
}
}
checkTokenIsInteger.call(this, sign !== 0);
return sign === HYPHENMINUS ? '-' + this.consume(NUMBER) : this.consume(NUMBER);
}
// An+B microsyntax https://www.w3.org/TR/css-syntax-3/#anb
module.exports = {
name: 'AnPlusB',
structure: {
a: [String, null],
b: [String, null]
},
parse: function() {
/* eslint-disable brace-style*/
var start = this.scanner.tokenStart;
var a = null;
var b = null;
// <integer>
if (this.scanner.tokenType === NUMBER) {
checkTokenIsInteger.call(this, ALLOW_SIGN);
b = this.consume(NUMBER);
}
// -n
// -n <signed-integer>
// -n ['+' | '-'] <signless-integer>
// -n- <signless-integer>
// <dashndashdigit-ident>
else if (this.scanner.tokenType === IDENT && cmpChar(this.scanner.source, this.scanner.tokenStart, HYPHENMINUS)) {
a = '-1';
expectCharCode.call(this, 1, N);
switch (this.scanner.getTokenLength()) {
// -n
// -n <signed-integer>
// -n ['+' | '-'] <signless-integer>
case 2:
this.scanner.next();
b = consumeB.call(this);
break;
// -n- <signless-integer>
case 3:
expectCharCode.call(this, 2, HYPHENMINUS);
this.scanner.next();
this.scanner.skipSC();
checkTokenIsInteger.call(this, DISALLOW_SIGN);
b = '-' + this.consume(NUMBER);
break;
// <dashndashdigit-ident>
default:
expectCharCode.call(this, 2, HYPHENMINUS);
checkInteger.call(this, 3, DISALLOW_SIGN);
this.scanner.next();
b = this.scanner.substrToCursor(start + 2);
}
}
// '+'? n
// '+'? n <signed-integer>
// '+'? n ['+' | '-'] <signless-integer>
// '+'? n- <signless-integer>
// '+'? <ndashdigit-ident>
else if (this.scanner.tokenType === IDENT || (this.scanner.isDelim(PLUSSIGN) && this.scanner.lookupType(1) === IDENT)) {
var sign = 0;
a = '1';
// just ignore a plus
if (this.scanner.isDelim(PLUSSIGN)) {
sign = 1;
this.scanner.next();
}
expectCharCode.call(this, 0, N);
switch (this.scanner.getTokenLength()) {
// '+'? n
// '+'? n <signed-integer>
// '+'? n ['+' | '-'] <signless-integer>
case 1:
this.scanner.next();
b = consumeB.call(this);
break;
// '+'? n- <signless-integer>
case 2:
expectCharCode.call(this, 1, HYPHENMINUS);
this.scanner.next();
this.scanner.skipSC();
checkTokenIsInteger.call(this, DISALLOW_SIGN);
b = '-' + this.consume(NUMBER);
break;
// '+'? <ndashdigit-ident>
default:
expectCharCode.call(this, 1, HYPHENMINUS);
checkInteger.call(this, 2, DISALLOW_SIGN);
this.scanner.next();
b = this.scanner.substrToCursor(start + sign + 1);
}
}
// <ndashdigit-dimension>
// <ndash-dimension> <signless-integer>
// <n-dimension>
// <n-dimension> <signed-integer>
// <n-dimension> ['+' | '-'] <signless-integer>
else if (this.scanner.tokenType === DIMENSION) {
var code = this.scanner.source.charCodeAt(this.scanner.tokenStart);
var sign = code === PLUSSIGN || code === HYPHENMINUS;
for (var i = this.scanner.tokenStart + sign; i < this.scanner.tokenEnd; i++) {
if (!isDigit(this.scanner.source.charCodeAt(i))) {
break;
}
}
if (i === this.scanner.tokenStart + sign) {
this.error('Integer is expected', this.scanner.tokenStart + sign);
}
expectCharCode.call(this, i - this.scanner.tokenStart, N);
a = this.scanner.source.substring(start, i);
// <n-dimension>
// <n-dimension> <signed-integer>
// <n-dimension> ['+' | '-'] <signless-integer>
if (i + 1 === this.scanner.tokenEnd) {
this.scanner.next();
b = consumeB.call(this);
} else {
expectCharCode.call(this, i - this.scanner.tokenStart + 1, HYPHENMINUS);
// <ndash-dimension> <signless-integer>
if (i + 2 === this.scanner.tokenEnd) {
this.scanner.next();
this.scanner.skipSC();
checkTokenIsInteger.call(this, DISALLOW_SIGN);
b = '-' + this.consume(NUMBER);
}
// <ndashdigit-dimension>
else {
checkInteger.call(this, i - this.scanner.tokenStart + 2, DISALLOW_SIGN);
this.scanner.next();
b = this.scanner.substrToCursor(i + 1);
}
}
} else {
this.error();
}
if (a !== null && a.charCodeAt(0) === PLUSSIGN) {
a = a.substr(1);
}
if (b !== null && b.charCodeAt(0) === PLUSSIGN) {
b = b.substr(1);
}
return {
type: 'AnPlusB',
loc: this.getLocation(start, this.scanner.tokenStart),
a: a,
b: b
};
},
generate: function(node) {
var a = node.a !== null && node.a !== undefined;
var b = node.b !== null && node.b !== undefined;
if (a) {
this.chunk(
node.a === '+1' ? '+n' : // eslint-disable-line operator-linebreak, indent
node.a === '1' ? 'n' : // eslint-disable-line operator-linebreak, indent
node.a === '-1' ? '-n' : // eslint-disable-line operator-linebreak, indent
node.a + 'n' // eslint-disable-line operator-linebreak, indent
);
if (b) {
b = String(node.b);
if (b.charAt(0) === '-' || b.charAt(0) === '+') {
this.chunk(b.charAt(0));
this.chunk(b.substr(1));
} else {
this.chunk('+');
this.chunk(b);
}
}
} else {
this.chunk(String(node.b));
}
}
};

107
web/node_modules/css-tree/lib/syntax/node/Atrule.js generated vendored Normal file
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var TYPE = require('../../tokenizer').TYPE;
var rawMode = require('./Raw').mode;
var ATKEYWORD = TYPE.AtKeyword;
var SEMICOLON = TYPE.Semicolon;
var LEFTCURLYBRACKET = TYPE.LeftCurlyBracket;
var RIGHTCURLYBRACKET = TYPE.RightCurlyBracket;
function consumeRaw(startToken) {
return this.Raw(startToken, rawMode.leftCurlyBracketOrSemicolon, true);
}
function isDeclarationBlockAtrule() {
for (var offset = 1, type; type = this.scanner.lookupType(offset); offset++) {
if (type === RIGHTCURLYBRACKET) {
return true;
}
if (type === LEFTCURLYBRACKET ||
type === ATKEYWORD) {
return false;
}
}
return false;
}
module.exports = {
name: 'Atrule',
structure: {
name: String,
prelude: ['AtrulePrelude', 'Raw', null],
block: ['Block', null]
},
parse: function() {
var start = this.scanner.tokenStart;
var name;
var nameLowerCase;
var prelude = null;
var block = null;
this.eat(ATKEYWORD);
name = this.scanner.substrToCursor(start + 1);
nameLowerCase = name.toLowerCase();
this.scanner.skipSC();
// parse prelude
if (this.scanner.eof === false &&
this.scanner.tokenType !== LEFTCURLYBRACKET &&
this.scanner.tokenType !== SEMICOLON) {
if (this.parseAtrulePrelude) {
prelude = this.parseWithFallback(this.AtrulePrelude.bind(this, name), consumeRaw);
// turn empty AtrulePrelude into null
if (prelude.type === 'AtrulePrelude' && prelude.children.head === null) {
prelude = null;
}
} else {
prelude = consumeRaw.call(this, this.scanner.tokenIndex);
}
this.scanner.skipSC();
}
switch (this.scanner.tokenType) {
case SEMICOLON:
this.scanner.next();
break;
case LEFTCURLYBRACKET:
if (this.atrule.hasOwnProperty(nameLowerCase) &&
typeof this.atrule[nameLowerCase].block === 'function') {
block = this.atrule[nameLowerCase].block.call(this);
} else {
// TODO: should consume block content as Raw?
block = this.Block(isDeclarationBlockAtrule.call(this));
}
break;
}
return {
type: 'Atrule',
loc: this.getLocation(start, this.scanner.tokenStart),
name: name,
prelude: prelude,
block: block
};
},
generate: function(node) {
this.chunk('@');
this.chunk(node.name);
if (node.prelude !== null) {
this.chunk(' ');
this.node(node.prelude);
}
if (node.block) {
this.node(node.block);
} else {
this.chunk(';');
}
},
walkContext: 'atrule'
};

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var TYPE = require('../../tokenizer').TYPE;
var SEMICOLON = TYPE.Semicolon;
var LEFTCURLYBRACKET = TYPE.LeftCurlyBracket;
module.exports = {
name: 'AtrulePrelude',
structure: {
children: [[]]
},
parse: function(name) {
var children = null;
if (name !== null) {
name = name.toLowerCase();
}
this.scanner.skipSC();
if (this.atrule.hasOwnProperty(name) &&
typeof this.atrule[name].prelude === 'function') {
// custom consumer
children = this.atrule[name].prelude.call(this);
} else {
// default consumer
children = this.readSequence(this.scope.AtrulePrelude);
}
this.scanner.skipSC();
if (this.scanner.eof !== true &&
this.scanner.tokenType !== LEFTCURLYBRACKET &&
this.scanner.tokenType !== SEMICOLON) {
this.error('Semicolon or block is expected');
}
if (children === null) {
children = this.createList();
}
return {
type: 'AtrulePrelude',
loc: this.getLocationFromList(children),
children: children
};
},
generate: function(node) {
this.children(node);
},
walkContext: 'atrulePrelude'
};

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var TYPE = require('../../tokenizer').TYPE;
var IDENT = TYPE.Ident;
var STRING = TYPE.String;
var COLON = TYPE.Colon;
var LEFTSQUAREBRACKET = TYPE.LeftSquareBracket;
var RIGHTSQUAREBRACKET = TYPE.RightSquareBracket;
var DOLLARSIGN = 0x0024; // U+0024 DOLLAR SIGN ($)
var ASTERISK = 0x002A; // U+002A ASTERISK (*)
var EQUALSSIGN = 0x003D; // U+003D EQUALS SIGN (=)
var CIRCUMFLEXACCENT = 0x005E; // U+005E (^)
var VERTICALLINE = 0x007C; // U+007C VERTICAL LINE (|)
var TILDE = 0x007E; // U+007E TILDE (~)
function getAttributeName() {
if (this.scanner.eof) {
this.error('Unexpected end of input');
}
var start = this.scanner.tokenStart;
var expectIdent = false;
var checkColon = true;
if (this.scanner.isDelim(ASTERISK)) {
expectIdent = true;
checkColon = false;
this.scanner.next();
} else if (!this.scanner.isDelim(VERTICALLINE)) {
this.eat(IDENT);
}
if (this.scanner.isDelim(VERTICALLINE)) {
if (this.scanner.source.charCodeAt(this.scanner.tokenStart + 1) !== EQUALSSIGN) {
this.scanner.next();
this.eat(IDENT);
} else if (expectIdent) {
this.error('Identifier is expected', this.scanner.tokenEnd);
}
} else if (expectIdent) {
this.error('Vertical line is expected');
}
if (checkColon && this.scanner.tokenType === COLON) {
this.scanner.next();
this.eat(IDENT);
}
return {
type: 'Identifier',
loc: this.getLocation(start, this.scanner.tokenStart),
name: this.scanner.substrToCursor(start)
};
}
function getOperator() {
var start = this.scanner.tokenStart;
var code = this.scanner.source.charCodeAt(start);
if (code !== EQUALSSIGN && // =
code !== TILDE && // ~=
code !== CIRCUMFLEXACCENT && // ^=
code !== DOLLARSIGN && // $=
code !== ASTERISK && // *=
code !== VERTICALLINE // |=
) {
this.error('Attribute selector (=, ~=, ^=, $=, *=, |=) is expected');
}
this.scanner.next();
if (code !== EQUALSSIGN) {
if (!this.scanner.isDelim(EQUALSSIGN)) {
this.error('Equal sign is expected');
}
this.scanner.next();
}
return this.scanner.substrToCursor(start);
}
// '[' <wq-name> ']'
// '[' <wq-name> <attr-matcher> [ <string-token> | <ident-token> ] <attr-modifier>? ']'
module.exports = {
name: 'AttributeSelector',
structure: {
name: 'Identifier',
matcher: [String, null],
value: ['String', 'Identifier', null],
flags: [String, null]
},
parse: function() {
var start = this.scanner.tokenStart;
var name;
var matcher = null;
var value = null;
var flags = null;
this.eat(LEFTSQUAREBRACKET);
this.scanner.skipSC();
name = getAttributeName.call(this);
this.scanner.skipSC();
if (this.scanner.tokenType !== RIGHTSQUAREBRACKET) {
// avoid case `[name i]`
if (this.scanner.tokenType !== IDENT) {
matcher = getOperator.call(this);
this.scanner.skipSC();
value = this.scanner.tokenType === STRING
? this.String()
: this.Identifier();
this.scanner.skipSC();
}
// attribute flags
if (this.scanner.tokenType === IDENT) {
flags = this.scanner.getTokenValue();
this.scanner.next();
this.scanner.skipSC();
}
}
this.eat(RIGHTSQUAREBRACKET);
return {
type: 'AttributeSelector',
loc: this.getLocation(start, this.scanner.tokenStart),
name: name,
matcher: matcher,
value: value,
flags: flags
};
},
generate: function(node) {
var flagsPrefix = ' ';
this.chunk('[');
this.node(node.name);
if (node.matcher !== null) {
this.chunk(node.matcher);
if (node.value !== null) {
this.node(node.value);
// space between string and flags is not required
if (node.value.type === 'String') {
flagsPrefix = '';
}
}
}
if (node.flags !== null) {
this.chunk(flagsPrefix);
this.chunk(node.flags);
}
this.chunk(']');
}
};

91
web/node_modules/css-tree/lib/syntax/node/Block.js generated vendored Normal file
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var TYPE = require('../../tokenizer').TYPE;
var rawMode = require('./Raw').mode;
var WHITESPACE = TYPE.WhiteSpace;
var COMMENT = TYPE.Comment;
var SEMICOLON = TYPE.Semicolon;
var ATKEYWORD = TYPE.AtKeyword;
var LEFTCURLYBRACKET = TYPE.LeftCurlyBracket;
var RIGHTCURLYBRACKET = TYPE.RightCurlyBracket;
function consumeRaw(startToken) {
return this.Raw(startToken, null, true);
}
function consumeRule() {
return this.parseWithFallback(this.Rule, consumeRaw);
}
function consumeRawDeclaration(startToken) {
return this.Raw(startToken, rawMode.semicolonIncluded, true);
}
function consumeDeclaration() {
if (this.scanner.tokenType === SEMICOLON) {
return consumeRawDeclaration.call(this, this.scanner.tokenIndex);
}
var node = this.parseWithFallback(this.Declaration, consumeRawDeclaration);
if (this.scanner.tokenType === SEMICOLON) {
this.scanner.next();
}
return node;
}
module.exports = {
name: 'Block',
structure: {
children: [[
'Atrule',
'Rule',
'Declaration'
]]
},
parse: function(isDeclaration) {
var consumer = isDeclaration ? consumeDeclaration : consumeRule;
var start = this.scanner.tokenStart;
var children = this.createList();
this.eat(LEFTCURLYBRACKET);
scan:
while (!this.scanner.eof) {
switch (this.scanner.tokenType) {
case RIGHTCURLYBRACKET:
break scan;
case WHITESPACE:
case COMMENT:
this.scanner.next();
break;
case ATKEYWORD:
children.push(this.parseWithFallback(this.Atrule, consumeRaw));
break;
default:
children.push(consumer.call(this));
}
}
if (!this.scanner.eof) {
this.eat(RIGHTCURLYBRACKET);
}
return {
type: 'Block',
loc: this.getLocation(start, this.scanner.tokenStart),
children: children
};
},
generate: function(node) {
this.chunk('{');
this.children(node, function(prev) {
if (prev.type === 'Declaration') {
this.chunk(';');
}
});
this.chunk('}');
},
walkContext: 'block'
};

34
web/node_modules/css-tree/lib/syntax/node/Brackets.js generated vendored Normal file
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var TYPE = require('../../tokenizer').TYPE;
var LEFTSQUAREBRACKET = TYPE.LeftSquareBracket;
var RIGHTSQUAREBRACKET = TYPE.RightSquareBracket;
module.exports = {
name: 'Brackets',
structure: {
children: [[]]
},
parse: function(readSequence, recognizer) {
var start = this.scanner.tokenStart;
var children = null;
this.eat(LEFTSQUAREBRACKET);
children = readSequence.call(this, recognizer);
if (!this.scanner.eof) {
this.eat(RIGHTSQUAREBRACKET);
}
return {
type: 'Brackets',
loc: this.getLocation(start, this.scanner.tokenStart),
children: children
};
},
generate: function(node) {
this.chunk('[');
this.children(node);
this.chunk(']');
}
};

19
web/node_modules/css-tree/lib/syntax/node/CDC.js generated vendored Normal file
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var CDC = require('../../tokenizer').TYPE.CDC;
module.exports = {
name: 'CDC',
structure: [],
parse: function() {
var start = this.scanner.tokenStart;
this.eat(CDC); // -->
return {
type: 'CDC',
loc: this.getLocation(start, this.scanner.tokenStart)
};
},
generate: function() {
this.chunk('-->');
}
};

19
web/node_modules/css-tree/lib/syntax/node/CDO.js generated vendored Normal file
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@ -0,0 +1,19 @@
var CDO = require('../../tokenizer').TYPE.CDO;
module.exports = {
name: 'CDO',
structure: [],
parse: function() {
var start = this.scanner.tokenStart;
this.eat(CDO); // <!--
return {
type: 'CDO',
loc: this.getLocation(start, this.scanner.tokenStart)
};
},
generate: function() {
this.chunk('<!--');
}
};

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var TYPE = require('../../tokenizer').TYPE;
var IDENT = TYPE.Ident;
var FULLSTOP = 0x002E; // U+002E FULL STOP (.)
// '.' ident
module.exports = {
name: 'ClassSelector',
structure: {
name: String
},
parse: function() {
if (!this.scanner.isDelim(FULLSTOP)) {
this.error('Full stop is expected');
}
this.scanner.next();
return {
type: 'ClassSelector',
loc: this.getLocation(this.scanner.tokenStart - 1, this.scanner.tokenEnd),
name: this.consume(IDENT)
};
},
generate: function(node) {
this.chunk('.');
this.chunk(node.name);
}
};

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var TYPE = require('../../tokenizer').TYPE;
var IDENT = TYPE.Ident;
var PLUSSIGN = 0x002B; // U+002B PLUS SIGN (+)
var SOLIDUS = 0x002F; // U+002F SOLIDUS (/)
var GREATERTHANSIGN = 0x003E; // U+003E GREATER-THAN SIGN (>)
var TILDE = 0x007E; // U+007E TILDE (~)
// + | > | ~ | /deep/
module.exports = {
name: 'Combinator',
structure: {
name: String
},
parse: function() {
var start = this.scanner.tokenStart;
var code = this.scanner.source.charCodeAt(this.scanner.tokenStart);
switch (code) {
case GREATERTHANSIGN:
case PLUSSIGN:
case TILDE:
this.scanner.next();
break;
case SOLIDUS:
this.scanner.next();
if (this.scanner.tokenType !== IDENT || this.scanner.lookupValue(0, 'deep') === false) {
this.error('Identifier `deep` is expected');
}
this.scanner.next();
if (!this.scanner.isDelim(SOLIDUS)) {
this.error('Solidus is expected');
}
this.scanner.next();
break;
default:
this.error('Combinator is expected');
}
return {
type: 'Combinator',
loc: this.getLocation(start, this.scanner.tokenStart),
name: this.scanner.substrToCursor(start)
};
},
generate: function(node) {
this.chunk(node.name);
}
};

36
web/node_modules/css-tree/lib/syntax/node/Comment.js generated vendored Normal file
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var TYPE = require('../../tokenizer').TYPE;
var COMMENT = TYPE.Comment;
var ASTERISK = 0x002A; // U+002A ASTERISK (*)
var SOLIDUS = 0x002F; // U+002F SOLIDUS (/)
// '/*' .* '*/'
module.exports = {
name: 'Comment',
structure: {
value: String
},
parse: function() {
var start = this.scanner.tokenStart;
var end = this.scanner.tokenEnd;
this.eat(COMMENT);
if ((end - start + 2) >= 2 &&
this.scanner.source.charCodeAt(end - 2) === ASTERISK &&
this.scanner.source.charCodeAt(end - 1) === SOLIDUS) {
end -= 2;
}
return {
type: 'Comment',
loc: this.getLocation(start, this.scanner.tokenStart),
value: this.scanner.source.substring(start + 2, end)
};
},
generate: function(node) {
this.chunk('/*');
this.chunk(node.value);
this.chunk('*/');
}
};

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var isCustomProperty = require('../../utils/names').isCustomProperty;
var TYPE = require('../../tokenizer').TYPE;
var rawMode = require('./Raw').mode;
var IDENT = TYPE.Ident;
var HASH = TYPE.Hash;
var COLON = TYPE.Colon;
var SEMICOLON = TYPE.Semicolon;
var DELIM = TYPE.Delim;
var EXCLAMATIONMARK = 0x0021; // U+0021 EXCLAMATION MARK (!)
var NUMBERSIGN = 0x0023; // U+0023 NUMBER SIGN (#)
var DOLLARSIGN = 0x0024; // U+0024 DOLLAR SIGN ($)
var AMPERSAND = 0x0026; // U+0026 ANPERSAND (&)
var ASTERISK = 0x002A; // U+002A ASTERISK (*)
var PLUSSIGN = 0x002B; // U+002B PLUS SIGN (+)
var SOLIDUS = 0x002F; // U+002F SOLIDUS (/)
function consumeValueRaw(startToken) {
return this.Raw(startToken, rawMode.exclamationMarkOrSemicolon, true);
}
function consumeCustomPropertyRaw(startToken) {
return this.Raw(startToken, rawMode.exclamationMarkOrSemicolon, false);
}
function consumeValue() {
var startValueToken = this.scanner.tokenIndex;
var value = this.Value();
if (value.type !== 'Raw' &&
this.scanner.eof === false &&
this.scanner.tokenType !== SEMICOLON &&
this.scanner.isDelim(EXCLAMATIONMARK) === false &&
this.scanner.isBalanceEdge(startValueToken) === false) {
this.error();
}
return value;
}
module.exports = {
name: 'Declaration',
structure: {
important: [Boolean, String],
property: String,
value: ['Value', 'Raw']
},
parse: function() {
var start = this.scanner.tokenStart;
var startToken = this.scanner.tokenIndex;
var property = readProperty.call(this);
var customProperty = isCustomProperty(property);
var parseValue = customProperty ? this.parseCustomProperty : this.parseValue;
var consumeRaw = customProperty ? consumeCustomPropertyRaw : consumeValueRaw;
var important = false;
var value;
this.scanner.skipSC();
this.eat(COLON);
if (!customProperty) {
this.scanner.skipSC();
}
if (parseValue) {
value = this.parseWithFallback(consumeValue, consumeRaw);
} else {
value = consumeRaw.call(this, this.scanner.tokenIndex);
}
if (this.scanner.isDelim(EXCLAMATIONMARK)) {
important = getImportant.call(this);
this.scanner.skipSC();
}
// Do not include semicolon to range per spec
// https://drafts.csswg.org/css-syntax/#declaration-diagram
if (this.scanner.eof === false &&
this.scanner.tokenType !== SEMICOLON &&
this.scanner.isBalanceEdge(startToken) === false) {
this.error();
}
return {
type: 'Declaration',
loc: this.getLocation(start, this.scanner.tokenStart),
important: important,
property: property,
value: value
};
},
generate: function(node) {
this.chunk(node.property);
this.chunk(':');
this.node(node.value);
if (node.important) {
this.chunk(node.important === true ? '!important' : '!' + node.important);
}
},
walkContext: 'declaration'
};
function readProperty() {
var start = this.scanner.tokenStart;
var prefix = 0;
// hacks
if (this.scanner.tokenType === DELIM) {
switch (this.scanner.source.charCodeAt(this.scanner.tokenStart)) {
case ASTERISK:
case DOLLARSIGN:
case PLUSSIGN:
case NUMBERSIGN:
case AMPERSAND:
this.scanner.next();
break;
// TODO: not sure we should support this hack
case SOLIDUS:
this.scanner.next();
if (this.scanner.isDelim(SOLIDUS)) {
this.scanner.next();
}
break;
}
}
if (prefix) {
this.scanner.skip(prefix);
}
if (this.scanner.tokenType === HASH) {
this.eat(HASH);
} else {
this.eat(IDENT);
}
return this.scanner.substrToCursor(start);
}
// ! ws* important
function getImportant() {
this.eat(DELIM);
this.scanner.skipSC();
var important = this.consume(IDENT);
// store original value in case it differ from `important`
// for better original source restoring and hacks like `!ie` support
return important === 'important' ? true : important;
}

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var TYPE = require('../../tokenizer').TYPE;
var rawMode = require('./Raw').mode;
var WHITESPACE = TYPE.WhiteSpace;
var COMMENT = TYPE.Comment;
var SEMICOLON = TYPE.Semicolon;
function consumeRaw(startToken) {
return this.Raw(startToken, rawMode.semicolonIncluded, true);
}
module.exports = {
name: 'DeclarationList',
structure: {
children: [[
'Declaration'
]]
},
parse: function() {
var children = this.createList();
scan:
while (!this.scanner.eof) {
switch (this.scanner.tokenType) {
case WHITESPACE:
case COMMENT:
case SEMICOLON:
this.scanner.next();
break;
default:
children.push(this.parseWithFallback(this.Declaration, consumeRaw));
}
}
return {
type: 'DeclarationList',
loc: this.getLocationFromList(children),
children: children
};
},
generate: function(node) {
this.children(node, function(prev) {
if (prev.type === 'Declaration') {
this.chunk(';');
}
});
}
};

29
web/node_modules/css-tree/lib/syntax/node/Dimension.js generated vendored Normal file
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var consumeNumber = require('../../tokenizer/utils').consumeNumber;
var TYPE = require('../../tokenizer').TYPE;
var DIMENSION = TYPE.Dimension;
module.exports = {
name: 'Dimension',
structure: {
value: String,
unit: String
},
parse: function() {
var start = this.scanner.tokenStart;
var numberEnd = consumeNumber(this.scanner.source, start);
this.eat(DIMENSION);
return {
type: 'Dimension',
loc: this.getLocation(start, this.scanner.tokenStart),
value: this.scanner.source.substring(start, numberEnd),
unit: this.scanner.source.substring(numberEnd, this.scanner.tokenStart)
};
},
generate: function(node) {
this.chunk(node.value);
this.chunk(node.unit);
}
};

40
web/node_modules/css-tree/lib/syntax/node/Function.js generated vendored Normal file
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var TYPE = require('../../tokenizer').TYPE;
var RIGHTPARENTHESIS = TYPE.RightParenthesis;
// <function-token> <sequence> )
module.exports = {
name: 'Function',
structure: {
name: String,
children: [[]]
},
parse: function(readSequence, recognizer) {
var start = this.scanner.tokenStart;
var name = this.consumeFunctionName();
var nameLowerCase = name.toLowerCase();
var children;
children = recognizer.hasOwnProperty(nameLowerCase)
? recognizer[nameLowerCase].call(this, recognizer)
: readSequence.call(this, recognizer);
if (!this.scanner.eof) {
this.eat(RIGHTPARENTHESIS);
}
return {
type: 'Function',
loc: this.getLocation(start, this.scanner.tokenStart),
name: name,
children: children
};
},
generate: function(node) {
this.chunk(node.name);
this.chunk('(');
this.children(node);
this.chunk(')');
},
walkContext: 'function'
};

26
web/node_modules/css-tree/lib/syntax/node/HexColor.js generated vendored Normal file
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@ -0,0 +1,26 @@
var TYPE = require('../../tokenizer').TYPE;
var HASH = TYPE.Hash;
// '#' ident
module.exports = {
name: 'HexColor',
structure: {
value: String
},
parse: function() {
var start = this.scanner.tokenStart;
this.eat(HASH);
return {
type: 'HexColor',
loc: this.getLocation(start, this.scanner.tokenStart),
value: this.scanner.substrToCursor(start + 1)
};
},
generate: function(node) {
this.chunk('#');
this.chunk(node.value);
}
};

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@ -0,0 +1,27 @@
var TYPE = require('../../tokenizer').TYPE;
var HASH = TYPE.Hash;
// <hash-token>
module.exports = {
name: 'IdSelector',
structure: {
name: String
},
parse: function() {
var start = this.scanner.tokenStart;
// TODO: check value is an ident
this.eat(HASH);
return {
type: 'IdSelector',
loc: this.getLocation(start, this.scanner.tokenStart),
name: this.scanner.substrToCursor(start + 1)
};
},
generate: function(node) {
this.chunk('#');
this.chunk(node.name);
}
};

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@ -0,0 +1,20 @@
var TYPE = require('../../tokenizer').TYPE;
var IDENT = TYPE.Ident;
module.exports = {
name: 'Identifier',
structure: {
name: String
},
parse: function() {
return {
type: 'Identifier',
loc: this.getLocation(this.scanner.tokenStart, this.scanner.tokenEnd),
name: this.consume(IDENT)
};
},
generate: function(node) {
this.chunk(node.name);
}
};

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@ -0,0 +1,76 @@
var TYPE = require('../../tokenizer').TYPE;
var IDENT = TYPE.Ident;
var NUMBER = TYPE.Number;
var DIMENSION = TYPE.Dimension;
var LEFTPARENTHESIS = TYPE.LeftParenthesis;
var RIGHTPARENTHESIS = TYPE.RightParenthesis;
var COLON = TYPE.Colon;
var DELIM = TYPE.Delim;
module.exports = {
name: 'MediaFeature',
structure: {
name: String,
value: ['Identifier', 'Number', 'Dimension', 'Ratio', null]
},
parse: function() {
var start = this.scanner.tokenStart;
var name;
var value = null;
this.eat(LEFTPARENTHESIS);
this.scanner.skipSC();
name = this.consume(IDENT);
this.scanner.skipSC();
if (this.scanner.tokenType !== RIGHTPARENTHESIS) {
this.eat(COLON);
this.scanner.skipSC();
switch (this.scanner.tokenType) {
case NUMBER:
if (this.lookupNonWSType(1) === DELIM) {
value = this.Ratio();
} else {
value = this.Number();
}
break;
case DIMENSION:
value = this.Dimension();
break;
case IDENT:
value = this.Identifier();
break;
default:
this.error('Number, dimension, ratio or identifier is expected');
}
this.scanner.skipSC();
}
this.eat(RIGHTPARENTHESIS);
return {
type: 'MediaFeature',
loc: this.getLocation(start, this.scanner.tokenStart),
name: name,
value: value
};
},
generate: function(node) {
this.chunk('(');
this.chunk(node.name);
if (node.value !== null) {
this.chunk(':');
this.node(node.value);
}
this.chunk(')');
}
};

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@ -0,0 +1,68 @@
var TYPE = require('../../tokenizer').TYPE;
var WHITESPACE = TYPE.WhiteSpace;
var COMMENT = TYPE.Comment;
var IDENT = TYPE.Ident;
var LEFTPARENTHESIS = TYPE.LeftParenthesis;
module.exports = {
name: 'MediaQuery',
structure: {
children: [[
'Identifier',
'MediaFeature',
'WhiteSpace'
]]
},
parse: function() {
this.scanner.skipSC();
var children = this.createList();
var child = null;
var space = null;
scan:
while (!this.scanner.eof) {
switch (this.scanner.tokenType) {
case COMMENT:
this.scanner.next();
continue;
case WHITESPACE:
space = this.WhiteSpace();
continue;
case IDENT:
child = this.Identifier();
break;
case LEFTPARENTHESIS:
child = this.MediaFeature();
break;
default:
break scan;
}
if (space !== null) {
children.push(space);
space = null;
}
children.push(child);
}
if (child === null) {
this.error('Identifier or parenthesis is expected');
}
return {
type: 'MediaQuery',
loc: this.getLocationFromList(children),
children: children
};
},
generate: function(node) {
this.children(node);
}
};

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@ -0,0 +1,36 @@
var COMMA = require('../../tokenizer').TYPE.Comma;
module.exports = {
name: 'MediaQueryList',
structure: {
children: [[
'MediaQuery'
]]
},
parse: function(relative) {
var children = this.createList();
this.scanner.skipSC();
while (!this.scanner.eof) {
children.push(this.MediaQuery(relative));
if (this.scanner.tokenType !== COMMA) {
break;
}
this.scanner.next();
}
return {
type: 'MediaQueryList',
loc: this.getLocationFromList(children),
children: children
};
},
generate: function(node) {
this.children(node, function() {
this.chunk(',');
});
}
};

51
web/node_modules/css-tree/lib/syntax/node/Nth.js generated vendored Normal file
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@ -0,0 +1,51 @@
module.exports = {
name: 'Nth',
structure: {
nth: ['AnPlusB', 'Identifier'],
selector: ['SelectorList', null]
},
parse: function(allowOfClause) {
this.scanner.skipSC();
var start = this.scanner.tokenStart;
var end = start;
var selector = null;
var query;
if (this.scanner.lookupValue(0, 'odd') || this.scanner.lookupValue(0, 'even')) {
query = this.Identifier();
} else {
query = this.AnPlusB();
}
this.scanner.skipSC();
if (allowOfClause && this.scanner.lookupValue(0, 'of')) {
this.scanner.next();
selector = this.SelectorList();
if (this.needPositions) {
end = this.getLastListNode(selector.children).loc.end.offset;
}
} else {
if (this.needPositions) {
end = query.loc.end.offset;
}
}
return {
type: 'Nth',
loc: this.getLocation(start, end),
nth: query,
selector: selector
};
},
generate: function(node) {
this.node(node.nth);
if (node.selector !== null) {
this.chunk(' of ');
this.node(node.selector);
}
}
};

18
web/node_modules/css-tree/lib/syntax/node/Number.js generated vendored Normal file
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@ -0,0 +1,18 @@
var NUMBER = require('../../tokenizer').TYPE.Number;
module.exports = {
name: 'Number',
structure: {
value: String
},
parse: function() {
return {
type: 'Number',
loc: this.getLocation(this.scanner.tokenStart, this.scanner.tokenEnd),
value: this.consume(NUMBER)
};
},
generate: function(node) {
this.chunk(node.value);
}
};

21
web/node_modules/css-tree/lib/syntax/node/Operator.js generated vendored Normal file
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@ -0,0 +1,21 @@
// '/' | '*' | ',' | ':' | '+' | '-'
module.exports = {
name: 'Operator',
structure: {
value: String
},
parse: function() {
var start = this.scanner.tokenStart;
this.scanner.next();
return {
type: 'Operator',
loc: this.getLocation(start, this.scanner.tokenStart),
value: this.scanner.substrToCursor(start)
};
},
generate: function(node) {
this.chunk(node.value);
}
};

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var TYPE = require('../../tokenizer').TYPE;
var LEFTPARENTHESIS = TYPE.LeftParenthesis;
var RIGHTPARENTHESIS = TYPE.RightParenthesis;
module.exports = {
name: 'Parentheses',
structure: {
children: [[]]
},
parse: function(readSequence, recognizer) {
var start = this.scanner.tokenStart;
var children = null;
this.eat(LEFTPARENTHESIS);
children = readSequence.call(this, recognizer);
if (!this.scanner.eof) {
this.eat(RIGHTPARENTHESIS);
}
return {
type: 'Parentheses',
loc: this.getLocation(start, this.scanner.tokenStart),
children: children
};
},
generate: function(node) {
this.chunk('(');
this.children(node);
this.chunk(')');
}
};

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var consumeNumber = require('../../tokenizer/utils').consumeNumber;
var TYPE = require('../../tokenizer').TYPE;
var PERCENTAGE = TYPE.Percentage;
module.exports = {
name: 'Percentage',
structure: {
value: String
},
parse: function() {
var start = this.scanner.tokenStart;
var numberEnd = consumeNumber(this.scanner.source, start);
this.eat(PERCENTAGE);
return {
type: 'Percentage',
loc: this.getLocation(start, this.scanner.tokenStart),
value: this.scanner.source.substring(start, numberEnd)
};
},
generate: function(node) {
this.chunk(node.value);
this.chunk('%');
}
};

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var TYPE = require('../../tokenizer').TYPE;
var IDENT = TYPE.Ident;
var FUNCTION = TYPE.Function;
var COLON = TYPE.Colon;
var RIGHTPARENTHESIS = TYPE.RightParenthesis;
// : [ <ident> | <function-token> <any-value>? ) ]
module.exports = {
name: 'PseudoClassSelector',
structure: {
name: String,
children: [['Raw'], null]
},
parse: function() {
var start = this.scanner.tokenStart;
var children = null;
var name;
var nameLowerCase;
this.eat(COLON);
if (this.scanner.tokenType === FUNCTION) {
name = this.consumeFunctionName();
nameLowerCase = name.toLowerCase();
if (this.pseudo.hasOwnProperty(nameLowerCase)) {
this.scanner.skipSC();
children = this.pseudo[nameLowerCase].call(this);
this.scanner.skipSC();
} else {
children = this.createList();
children.push(
this.Raw(this.scanner.tokenIndex, null, false)
);
}
this.eat(RIGHTPARENTHESIS);
} else {
name = this.consume(IDENT);
}
return {
type: 'PseudoClassSelector',
loc: this.getLocation(start, this.scanner.tokenStart),
name: name,
children: children
};
},
generate: function(node) {
this.chunk(':');
this.chunk(node.name);
if (node.children !== null) {
this.chunk('(');
this.children(node);
this.chunk(')');
}
},
walkContext: 'function'
};

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var TYPE = require('../../tokenizer').TYPE;
var IDENT = TYPE.Ident;
var FUNCTION = TYPE.Function;
var COLON = TYPE.Colon;
var RIGHTPARENTHESIS = TYPE.RightParenthesis;
// :: [ <ident> | <function-token> <any-value>? ) ]
module.exports = {
name: 'PseudoElementSelector',
structure: {
name: String,
children: [['Raw'], null]
},
parse: function() {
var start = this.scanner.tokenStart;
var children = null;
var name;
var nameLowerCase;
this.eat(COLON);
this.eat(COLON);
if (this.scanner.tokenType === FUNCTION) {
name = this.consumeFunctionName();
nameLowerCase = name.toLowerCase();
if (this.pseudo.hasOwnProperty(nameLowerCase)) {
this.scanner.skipSC();
children = this.pseudo[nameLowerCase].call(this);
this.scanner.skipSC();
} else {
children = this.createList();
children.push(
this.Raw(this.scanner.tokenIndex, null, false)
);
}
this.eat(RIGHTPARENTHESIS);
} else {
name = this.consume(IDENT);
}
return {
type: 'PseudoElementSelector',
loc: this.getLocation(start, this.scanner.tokenStart),
name: name,
children: children
};
},
generate: function(node) {
this.chunk('::');
this.chunk(node.name);
if (node.children !== null) {
this.chunk('(');
this.children(node);
this.chunk(')');
}
},
walkContext: 'function'
};

66
web/node_modules/css-tree/lib/syntax/node/Ratio.js generated vendored Normal file
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var isDigit = require('../../tokenizer').isDigit;
var TYPE = require('../../tokenizer').TYPE;
var NUMBER = TYPE.Number;
var DELIM = TYPE.Delim;
var SOLIDUS = 0x002F; // U+002F SOLIDUS (/)
var FULLSTOP = 0x002E; // U+002E FULL STOP (.)
// Terms of <ratio> should be a positive numbers (not zero or negative)
// (see https://drafts.csswg.org/mediaqueries-3/#values)
// However, -o-min-device-pixel-ratio takes fractional values as a ratio's term
// and this is using by various sites. Therefore we relax checking on parse
// to test a term is unsigned number without an exponent part.
// Additional checking may be applied on lexer validation.
function consumeNumber() {
this.scanner.skipWS();
var value = this.consume(NUMBER);
for (var i = 0; i < value.length; i++) {
var code = value.charCodeAt(i);
if (!isDigit(code) && code !== FULLSTOP) {
this.error('Unsigned number is expected', this.scanner.tokenStart - value.length + i);
}
}
if (Number(value) === 0) {
this.error('Zero number is not allowed', this.scanner.tokenStart - value.length);
}
return value;
}
// <positive-integer> S* '/' S* <positive-integer>
module.exports = {
name: 'Ratio',
structure: {
left: String,
right: String
},
parse: function() {
var start = this.scanner.tokenStart;
var left = consumeNumber.call(this);
var right;
this.scanner.skipWS();
if (!this.scanner.isDelim(SOLIDUS)) {
this.error('Solidus is expected');
}
this.eat(DELIM);
right = consumeNumber.call(this);
return {
type: 'Ratio',
loc: this.getLocation(start, this.scanner.tokenStart),
left: left,
right: right
};
},
generate: function(node) {
this.chunk(node.left);
this.chunk('/');
this.chunk(node.right);
}
};

87
web/node_modules/css-tree/lib/syntax/node/Raw.js generated vendored Normal file
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var tokenizer = require('../../tokenizer');
var TYPE = tokenizer.TYPE;
var WhiteSpace = TYPE.WhiteSpace;
var Semicolon = TYPE.Semicolon;
var LeftCurlyBracket = TYPE.LeftCurlyBracket;
var Delim = TYPE.Delim;
var EXCLAMATIONMARK = 0x0021; // U+0021 EXCLAMATION MARK (!)
function getOffsetExcludeWS() {
if (this.scanner.tokenIndex > 0) {
if (this.scanner.lookupType(-1) === WhiteSpace) {
return this.scanner.tokenIndex > 1
? this.scanner.getTokenStart(this.scanner.tokenIndex - 1)
: this.scanner.firstCharOffset;
}
}
return this.scanner.tokenStart;
}
// 0, 0, false
function balanceEnd() {
return 0;
}
// LEFTCURLYBRACKET, 0, false
function leftCurlyBracket(tokenType) {
return tokenType === LeftCurlyBracket ? 1 : 0;
}
// LEFTCURLYBRACKET, SEMICOLON, false
function leftCurlyBracketOrSemicolon(tokenType) {
return tokenType === LeftCurlyBracket || tokenType === Semicolon ? 1 : 0;
}
// EXCLAMATIONMARK, SEMICOLON, false
function exclamationMarkOrSemicolon(tokenType, source, offset) {
if (tokenType === Delim && source.charCodeAt(offset) === EXCLAMATIONMARK) {
return 1;
}
return tokenType === Semicolon ? 1 : 0;
}
// 0, SEMICOLON, true
function semicolonIncluded(tokenType) {
return tokenType === Semicolon ? 2 : 0;
}
module.exports = {
name: 'Raw',
structure: {
value: String
},
parse: function(startToken, mode, excludeWhiteSpace) {
var startOffset = this.scanner.getTokenStart(startToken);
var endOffset;
this.scanner.skip(
this.scanner.getRawLength(startToken, mode || balanceEnd)
);
if (excludeWhiteSpace && this.scanner.tokenStart > startOffset) {
endOffset = getOffsetExcludeWS.call(this);
} else {
endOffset = this.scanner.tokenStart;
}
return {
type: 'Raw',
loc: this.getLocation(startOffset, endOffset),
value: this.scanner.source.substring(startOffset, endOffset)
};
},
generate: function(node) {
this.chunk(node.value);
},
mode: {
default: balanceEnd,
leftCurlyBracket: leftCurlyBracket,
leftCurlyBracketOrSemicolon: leftCurlyBracketOrSemicolon,
exclamationMarkOrSemicolon: exclamationMarkOrSemicolon,
semicolonIncluded: semicolonIncluded
}
};

54
web/node_modules/css-tree/lib/syntax/node/Rule.js generated vendored Normal file
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var TYPE = require('../../tokenizer').TYPE;
var rawMode = require('./Raw').mode;
var LEFTCURLYBRACKET = TYPE.LeftCurlyBracket;
function consumeRaw(startToken) {
return this.Raw(startToken, rawMode.leftCurlyBracket, true);
}
function consumePrelude() {
var prelude = this.SelectorList();
if (prelude.type !== 'Raw' &&
this.scanner.eof === false &&
this.scanner.tokenType !== LEFTCURLYBRACKET) {
this.error();
}
return prelude;
}
module.exports = {
name: 'Rule',
structure: {
prelude: ['SelectorList', 'Raw'],
block: ['Block']
},
parse: function() {
var startToken = this.scanner.tokenIndex;
var startOffset = this.scanner.tokenStart;
var prelude;
var block;
if (this.parseRulePrelude) {
prelude = this.parseWithFallback(consumePrelude, consumeRaw);
} else {
prelude = consumeRaw.call(this, startToken);
}
block = this.Block(true);
return {
type: 'Rule',
loc: this.getLocation(startOffset, this.scanner.tokenStart),
prelude: prelude,
block: block
};
},
generate: function(node) {
this.node(node.prelude);
this.node(node.block);
},
walkContext: 'rule'
};

32
web/node_modules/css-tree/lib/syntax/node/Selector.js generated vendored Normal file
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module.exports = {
name: 'Selector',
structure: {
children: [[
'TypeSelector',
'IdSelector',
'ClassSelector',
'AttributeSelector',
'PseudoClassSelector',
'PseudoElementSelector',
'Combinator',
'WhiteSpace'
]]
},
parse: function() {
var children = this.readSequence(this.scope.Selector);
// nothing were consumed
if (this.getFirstListNode(children) === null) {
this.error('Selector is expected');
}
return {
type: 'Selector',
loc: this.getLocationFromList(children),
children: children
};
},
generate: function(node) {
this.children(node);
}
};

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var TYPE = require('../../tokenizer').TYPE;
var COMMA = TYPE.Comma;
module.exports = {
name: 'SelectorList',
structure: {
children: [[
'Selector',
'Raw'
]]
},
parse: function() {
var children = this.createList();
while (!this.scanner.eof) {
children.push(this.Selector());
if (this.scanner.tokenType === COMMA) {
this.scanner.next();
continue;
}
break;
}
return {
type: 'SelectorList',
loc: this.getLocationFromList(children),
children: children
};
},
generate: function(node) {
this.children(node, function() {
this.chunk(',');
});
},
walkContext: 'selector'
};

18
web/node_modules/css-tree/lib/syntax/node/String.js generated vendored Normal file
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var STRING = require('../../tokenizer').TYPE.String;
module.exports = {
name: 'String',
structure: {
value: String
},
parse: function() {
return {
type: 'String',
loc: this.getLocation(this.scanner.tokenStart, this.scanner.tokenEnd),
value: this.consume(STRING)
};
},
generate: function(node) {
this.chunk(node.value);
}
};

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var TYPE = require('../../tokenizer').TYPE;
var WHITESPACE = TYPE.WhiteSpace;
var COMMENT = TYPE.Comment;
var ATKEYWORD = TYPE.AtKeyword;
var CDO = TYPE.CDO;
var CDC = TYPE.CDC;
var EXCLAMATIONMARK = 0x0021; // U+0021 EXCLAMATION MARK (!)
function consumeRaw(startToken) {
return this.Raw(startToken, null, false);
}
module.exports = {
name: 'StyleSheet',
structure: {
children: [[
'Comment',
'CDO',
'CDC',
'Atrule',
'Rule',
'Raw'
]]
},
parse: function() {
var start = this.scanner.tokenStart;
var children = this.createList();
var child;
scan:
while (!this.scanner.eof) {
switch (this.scanner.tokenType) {
case WHITESPACE:
this.scanner.next();
continue;
case COMMENT:
// ignore comments except exclamation comments (i.e. /*! .. */) on top level
if (this.scanner.source.charCodeAt(this.scanner.tokenStart + 2) !== EXCLAMATIONMARK) {
this.scanner.next();
continue;
}
child = this.Comment();
break;
case CDO: // <!--
child = this.CDO();
break;
case CDC: // -->
child = this.CDC();
break;
// CSS Syntax Module Level 3
// §2.2 Error handling
// At the "top level" of a stylesheet, an <at-keyword-token> starts an at-rule.
case ATKEYWORD:
child = this.parseWithFallback(this.Atrule, consumeRaw);
break;
// Anything else starts a qualified rule ...
default:
child = this.parseWithFallback(this.Rule, consumeRaw);
}
children.push(child);
}
return {
type: 'StyleSheet',
loc: this.getLocation(start, this.scanner.tokenStart),
children: children
};
},
generate: function(node) {
this.children(node);
},
walkContext: 'stylesheet'
};

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var TYPE = require('../../tokenizer').TYPE;
var IDENT = TYPE.Ident;
var ASTERISK = 0x002A; // U+002A ASTERISK (*)
var VERTICALLINE = 0x007C; // U+007C VERTICAL LINE (|)
function eatIdentifierOrAsterisk() {
if (this.scanner.tokenType !== IDENT &&
this.scanner.isDelim(ASTERISK) === false) {
this.error('Identifier or asterisk is expected');
}
this.scanner.next();
}
// ident
// ident|ident
// ident|*
// *
// *|ident
// *|*
// |ident
// |*
module.exports = {
name: 'TypeSelector',
structure: {
name: String
},
parse: function() {
var start = this.scanner.tokenStart;
if (this.scanner.isDelim(VERTICALLINE)) {
this.scanner.next();
eatIdentifierOrAsterisk.call(this);
} else {
eatIdentifierOrAsterisk.call(this);
if (this.scanner.isDelim(VERTICALLINE)) {
this.scanner.next();
eatIdentifierOrAsterisk.call(this);
}
}
return {
type: 'TypeSelector',
loc: this.getLocation(start, this.scanner.tokenStart),
name: this.scanner.substrToCursor(start)
};
},
generate: function(node) {
this.chunk(node.name);
}
};

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var isHexDigit = require('../../tokenizer').isHexDigit;
var cmpChar = require('../../tokenizer').cmpChar;
var TYPE = require('../../tokenizer').TYPE;
var NAME = require('../../tokenizer').NAME;
var IDENT = TYPE.Ident;
var NUMBER = TYPE.Number;
var DIMENSION = TYPE.Dimension;
var PLUSSIGN = 0x002B; // U+002B PLUS SIGN (+)
var HYPHENMINUS = 0x002D; // U+002D HYPHEN-MINUS (-)
var QUESTIONMARK = 0x003F; // U+003F QUESTION MARK (?)
var U = 0x0075; // U+0075 LATIN SMALL LETTER U (u)
function eatHexSequence(offset, allowDash) {
for (var pos = this.scanner.tokenStart + offset, len = 0; pos < this.scanner.tokenEnd; pos++) {
var code = this.scanner.source.charCodeAt(pos);
if (code === HYPHENMINUS && allowDash && len !== 0) {
if (eatHexSequence.call(this, offset + len + 1, false) === 0) {
this.error();
}
return -1;
}
if (!isHexDigit(code)) {
this.error(
allowDash && len !== 0
? 'HyphenMinus' + (len < 6 ? ' or hex digit' : '') + ' is expected'
: (len < 6 ? 'Hex digit is expected' : 'Unexpected input'),
pos
);
}
if (++len > 6) {
this.error('Too many hex digits', pos);
};
}
this.scanner.next();
return len;
}
function eatQuestionMarkSequence(max) {
var count = 0;
while (this.scanner.isDelim(QUESTIONMARK)) {
if (++count > max) {
this.error('Too many question marks');
}
this.scanner.next();
}
}
function startsWith(code) {
if (this.scanner.source.charCodeAt(this.scanner.tokenStart) !== code) {
this.error(NAME[code] + ' is expected');
}
}
// https://drafts.csswg.org/css-syntax/#urange
// Informally, the <urange> production has three forms:
// U+0001
// Defines a range consisting of a single code point, in this case the code point "1".
// U+0001-00ff
// Defines a range of codepoints between the first and the second value, in this case
// the range between "1" and "ff" (255 in decimal) inclusive.
// U+00??
// Defines a range of codepoints where the "?" characters range over all hex digits,
// in this case defining the same as the value U+0000-00ff.
// In each form, a maximum of 6 digits is allowed for each hexadecimal number (if you treat "?" as a hexadecimal digit).
//
// <urange> =
// u '+' <ident-token> '?'* |
// u <dimension-token> '?'* |
// u <number-token> '?'* |
// u <number-token> <dimension-token> |
// u <number-token> <number-token> |
// u '+' '?'+
function scanUnicodeRange() {
var hexLength = 0;
// u '+' <ident-token> '?'*
// u '+' '?'+
if (this.scanner.isDelim(PLUSSIGN)) {
this.scanner.next();
if (this.scanner.tokenType === IDENT) {
hexLength = eatHexSequence.call(this, 0, true);
if (hexLength > 0) {
eatQuestionMarkSequence.call(this, 6 - hexLength);
}
return;
}
if (this.scanner.isDelim(QUESTIONMARK)) {
this.scanner.next();
eatQuestionMarkSequence.call(this, 5);
return;
}
this.error('Hex digit or question mark is expected');
return;
}
// u <number-token> '?'*
// u <number-token> <dimension-token>
// u <number-token> <number-token>
if (this.scanner.tokenType === NUMBER) {
startsWith.call(this, PLUSSIGN);
hexLength = eatHexSequence.call(this, 1, true);
if (this.scanner.isDelim(QUESTIONMARK)) {
eatQuestionMarkSequence.call(this, 6 - hexLength);
return;
}
if (this.scanner.tokenType === DIMENSION ||
this.scanner.tokenType === NUMBER) {
startsWith.call(this, HYPHENMINUS);
eatHexSequence.call(this, 1, false);
return;
}
return;
}
// u <dimension-token> '?'*
if (this.scanner.tokenType === DIMENSION) {
startsWith.call(this, PLUSSIGN);
hexLength = eatHexSequence.call(this, 1, true);
if (hexLength > 0) {
eatQuestionMarkSequence.call(this, 6 - hexLength);
}
return;
}
this.error();
}
module.exports = {
name: 'UnicodeRange',
structure: {
value: String
},
parse: function() {
var start = this.scanner.tokenStart;
// U or u
if (!cmpChar(this.scanner.source, start, U)) {
this.error('U is expected');
}
if (!cmpChar(this.scanner.source, start + 1, PLUSSIGN)) {
this.error('Plus sign is expected');
}
this.scanner.next();
scanUnicodeRange.call(this);
return {
type: 'UnicodeRange',
loc: this.getLocation(start, this.scanner.tokenStart),
value: this.scanner.substrToCursor(start)
};
},
generate: function(node) {
this.chunk(node.value);
}
};

69
web/node_modules/css-tree/lib/syntax/node/Url.js generated vendored Normal file
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var isWhiteSpace = require('../../tokenizer').isWhiteSpace;
var cmpStr = require('../../tokenizer').cmpStr;
var TYPE = require('../../tokenizer').TYPE;
var FUNCTION = TYPE.Function;
var URL = TYPE.Url;
var RIGHTPARENTHESIS = TYPE.RightParenthesis;
// <url-token> | <function-token> <string> )
module.exports = {
name: 'Url',
structure: {
value: ['String', 'Raw']
},
parse: function() {
var start = this.scanner.tokenStart;
var value;
switch (this.scanner.tokenType) {
case URL:
var rawStart = start + 4;
var rawEnd = this.scanner.tokenEnd - 1;
while (rawStart < rawEnd && isWhiteSpace(this.scanner.source.charCodeAt(rawStart))) {
rawStart++;
}
while (rawStart < rawEnd && isWhiteSpace(this.scanner.source.charCodeAt(rawEnd - 1))) {
rawEnd--;
}
value = {
type: 'Raw',
loc: this.getLocation(rawStart, rawEnd),
value: this.scanner.source.substring(rawStart, rawEnd)
};
this.eat(URL);
break;
case FUNCTION:
if (!cmpStr(this.scanner.source, this.scanner.tokenStart, this.scanner.tokenEnd, 'url(')) {
this.error('Function name must be `url`');
}
this.eat(FUNCTION);
this.scanner.skipSC();
value = this.String();
this.scanner.skipSC();
this.eat(RIGHTPARENTHESIS);
break;
default:
this.error('Url or Function is expected');
}
return {
type: 'Url',
loc: this.getLocation(start, this.scanner.tokenStart),
value: value
};
},
generate: function(node) {
this.chunk('url');
this.chunk('(');
this.node(node.value);
this.chunk(')');
}
};

19
web/node_modules/css-tree/lib/syntax/node/Value.js generated vendored Normal file
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module.exports = {
name: 'Value',
structure: {
children: [[]]
},
parse: function() {
var start = this.scanner.tokenStart;
var children = this.readSequence(this.scope.Value);
return {
type: 'Value',
loc: this.getLocation(start, this.scanner.tokenStart),
children: children
};
},
generate: function(node) {
this.children(node);
}
};

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var WHITESPACE = require('../../tokenizer').TYPE.WhiteSpace;
var SPACE = Object.freeze({
type: 'WhiteSpace',
loc: null,
value: ' '
});
module.exports = {
name: 'WhiteSpace',
structure: {
value: String
},
parse: function() {
this.eat(WHITESPACE);
return SPACE;
// return {
// type: 'WhiteSpace',
// loc: this.getLocation(this.scanner.tokenStart, this.scanner.tokenEnd),
// value: this.consume(WHITESPACE)
// };
},
generate: function(node) {
this.chunk(node.value);
}
};

42
web/node_modules/css-tree/lib/syntax/node/index.js generated vendored Normal file
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module.exports = {
AnPlusB: require('./AnPlusB'),
Atrule: require('./Atrule'),
AtrulePrelude: require('./AtrulePrelude'),
AttributeSelector: require('./AttributeSelector'),
Block: require('./Block'),
Brackets: require('./Brackets'),
CDC: require('./CDC'),
CDO: require('./CDO'),
ClassSelector: require('./ClassSelector'),
Combinator: require('./Combinator'),
Comment: require('./Comment'),
Declaration: require('./Declaration'),
DeclarationList: require('./DeclarationList'),
Dimension: require('./Dimension'),
Function: require('./Function'),
HexColor: require('./HexColor'),
Identifier: require('./Identifier'),
IdSelector: require('./IdSelector'),
MediaFeature: require('./MediaFeature'),
MediaQuery: require('./MediaQuery'),
MediaQueryList: require('./MediaQueryList'),
Nth: require('./Nth'),
Number: require('./Number'),
Operator: require('./Operator'),
Parentheses: require('./Parentheses'),
Percentage: require('./Percentage'),
PseudoClassSelector: require('./PseudoClassSelector'),
PseudoElementSelector: require('./PseudoElementSelector'),
Ratio: require('./Ratio'),
Raw: require('./Raw'),
Rule: require('./Rule'),
Selector: require('./Selector'),
SelectorList: require('./SelectorList'),
String: require('./String'),
StyleSheet: require('./StyleSheet'),
TypeSelector: require('./TypeSelector'),
UnicodeRange: require('./UnicodeRange'),
Url: require('./Url'),
Value: require('./Value'),
WhiteSpace: require('./WhiteSpace')
};

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@ -0,0 +1,9 @@
var DISALLOW_OF_CLAUSE = false;
module.exports = {
parse: function nth() {
return this.createSingleNodeList(
this.Nth(DISALLOW_OF_CLAUSE)
);
}
};

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@ -0,0 +1,9 @@
var ALLOW_OF_CLAUSE = true;
module.exports = {
parse: function nthWithOfClause() {
return this.createSingleNodeList(
this.Nth(ALLOW_OF_CLAUSE)
);
}
};

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@ -0,0 +1,7 @@
module.exports = {
parse: function selectorList() {
return this.createSingleNodeList(
this.SelectorList()
);
}
};

7
web/node_modules/css-tree/lib/syntax/pseudo/dir.js generated vendored Normal file
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@ -0,0 +1,7 @@
module.exports = {
parse: function() {
return this.createSingleNodeList(
this.Identifier()
);
}
};

7
web/node_modules/css-tree/lib/syntax/pseudo/has.js generated vendored Normal file
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@ -0,0 +1,7 @@
module.exports = {
parse: function() {
return this.createSingleNodeList(
this.SelectorList()
);
}
};

12
web/node_modules/css-tree/lib/syntax/pseudo/index.js generated vendored Normal file
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@ -0,0 +1,12 @@
module.exports = {
'dir': require('./dir'),
'has': require('./has'),
'lang': require('./lang'),
'matches': require('./matches'),
'not': require('./not'),
'nth-child': require('./nth-child'),
'nth-last-child': require('./nth-last-child'),
'nth-last-of-type': require('./nth-last-of-type'),
'nth-of-type': require('./nth-of-type'),
'slotted': require('./slotted')
};

7
web/node_modules/css-tree/lib/syntax/pseudo/lang.js generated vendored Normal file
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@ -0,0 +1,7 @@
module.exports = {
parse: function() {
return this.createSingleNodeList(
this.Identifier()
);
}
};

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@ -0,0 +1 @@
module.exports = require('./common/selectorList');

1
web/node_modules/css-tree/lib/syntax/pseudo/not.js generated vendored Normal file
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@ -0,0 +1 @@
module.exports = require('./common/selectorList');

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@ -0,0 +1 @@
module.exports = require('./common/nthWithOfClause');

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@ -0,0 +1 @@
module.exports = require('./common/nthWithOfClause');

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@ -0,0 +1 @@
module.exports = require('./common/nth');

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