CasperSecurity
var Marker = require('./marker');
var Token = require('./token');
var formatPosition = require('../utils/format-position');
var Level = {
BLOCK: 'block',
COMMENT: 'comment',
DOUBLE_QUOTE: 'double-quote',
RULE: 'rule',
SINGLE_QUOTE: 'single-quote'
};
var AT_RULES = [
'@charset',
'@import'
];
var BLOCK_RULES = [
'@-moz-document',
'@document',
'@-moz-keyframes',
'@-ms-keyframes',
'@-o-keyframes',
'@-webkit-keyframes',
'@keyframes',
'@media',
'@supports'
];
var IGNORE_END_COMMENT_PATTERN = /\/\* clean\-css ignore:end \*\/$/;
var IGNORE_START_COMMENT_PATTERN = /^\/\* clean\-css ignore:start \*\//;
var PAGE_MARGIN_BOXES = [
'@bottom-center',
'@bottom-left',
'@bottom-left-corner',
'@bottom-right',
'@bottom-right-corner',
'@left-bottom',
'@left-middle',
'@left-top',
'@right-bottom',
'@right-middle',
'@right-top',
'@top-center',
'@top-left',
'@top-left-corner',
'@top-right',
'@top-right-corner'
];
var EXTRA_PAGE_BOXES = [
'@footnote',
'@footnotes',
'@left',
'@page-float-bottom',
'@page-float-top',
'@right'
];
var REPEAT_PATTERN = /^\[\s{0,31}\d+\s{0,31}\]$/;
var RULE_WORD_SEPARATOR_PATTERN = /[\s\(]/;
var TAIL_BROKEN_VALUE_PATTERN = /[\s|\}]*$/;
function tokenize(source, externalContext) {
var internalContext = {
level: Level.BLOCK,
position: {
source: externalContext.source || undefined,
line: 1,
column: 0,
index: 0
}
};
return intoTokens(source, externalContext, internalContext, false);
}
function intoTokens(source, externalContext, internalContext, isNested) {
var allTokens = [];
var newTokens = allTokens;
var lastToken;
var ruleToken;
var ruleTokens = [];
var propertyToken;
var metadata;
var metadatas = [];
var level = internalContext.level;
var levels = [];
var buffer = [];
var buffers = [];
var isBufferEmpty = true;
var serializedBuffer;
var serializedBufferPart;
var roundBracketLevel = 0;
var isQuoted;
var isSpace;
var isNewLineNix;
var isNewLineWin;
var isCarriageReturn;
var isCommentStart;
var wasCommentStart = false;
var isCommentEnd;
var wasCommentEnd = false;
var isCommentEndMarker;
var isEscaped;
var wasEscaped = false;
var characterWithNoSpecialMeaning;
var isPreviousDash = false;
var isVariable = false;
var isRaw = false;
var seekingValue = false;
var seekingPropertyBlockClosing = false;
var position = internalContext.position;
var lastCommentStartAt;
for (; position.index < source.length; position.index++) {
var character = source[position.index];
isQuoted = level == Level.SINGLE_QUOTE || level == Level.DOUBLE_QUOTE;
isSpace = character == Marker.SPACE || character == Marker.TAB;
isNewLineNix = character == Marker.NEW_LINE_NIX;
isNewLineWin = character == Marker.NEW_LINE_NIX && source[position.index - 1] == Marker.CARRIAGE_RETURN;
isCarriageReturn = character == Marker.CARRIAGE_RETURN && source[position.index + 1] && source[position.index + 1] != Marker.NEW_LINE_NIX;
isCommentStart = !wasCommentEnd && level != Level.COMMENT && !isQuoted && character == Marker.ASTERISK && source[position.index - 1] == Marker.FORWARD_SLASH;
isCommentEndMarker = !wasCommentStart && !isQuoted && character == Marker.FORWARD_SLASH && source[position.index - 1] == Marker.ASTERISK;
isCommentEnd = level == Level.COMMENT && isCommentEndMarker;
characterWithNoSpecialMeaning = !isSpace && !isCarriageReturn && (character >= 'A' && character <= 'Z' || character >= 'a' && character <= 'z' || character >= '0' && character <= '9' || character == '-');
isVariable = isVariable || (!seekingValue && isPreviousDash && character === '-');
isPreviousDash = character === '-';
roundBracketLevel = Math.max(roundBracketLevel, 0);
metadata = isBufferEmpty ?
[position.line, position.column, position.source] :
metadata;
if (isEscaped) {
// previous character was a backslash
buffer.push(character);
isBufferEmpty = false;
} else if (characterWithNoSpecialMeaning) {
// it's just an alphanumeric character or a hyphen (part of any rule or property name) so let's end it quickly
buffer.push(character);
isBufferEmpty = false;
} else if ((isSpace || isNewLineNix && !isNewLineWin) && (isQuoted || level == Level.COMMENT)) {
buffer.push(character);
isBufferEmpty = false;
} else if ((isSpace || isNewLineNix && !isNewLineWin) && isBufferEmpty) {
// noop
} else if (!isCommentEnd && level == Level.COMMENT) {
buffer.push(character);
isBufferEmpty = false;
} else if (!isCommentStart && !isCommentEnd && isRaw) {
buffer.push(character);
isBufferEmpty = false;
} else if (isCommentStart && (level == Level.BLOCK || level == Level.RULE) && buffer.length > 1) {
// comment start within block preceded by some content, e.g. div/*<--
metadatas.push(metadata);
buffer.push(character);
buffers.push(buffer.slice(0, -2));
isBufferEmpty = false;
buffer = buffer.slice(-2);
metadata = [position.line, position.column - 1, position.source];
levels.push(level);
level = Level.COMMENT;
} else if (isCommentStart) {
// comment start, e.g. /*<--
levels.push(level);
level = Level.COMMENT;
buffer.push(character);
isBufferEmpty = false;
} else if (isCommentEnd && isIgnoreStartComment(buffer)) {
// ignore:start comment end, e.g. /* clean-css ignore:start */<--
serializedBuffer = buffer.join('').trim() + character;
lastToken = [Token.COMMENT, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]];
newTokens.push(lastToken);
isRaw = true;
metadata = metadatas.pop() || null;
buffer = buffers.pop() || [];
isBufferEmpty = buffer.length === 0;
} else if (isCommentEnd && isIgnoreEndComment(buffer)) {
// ignore:start comment end, e.g. /* clean-css ignore:end */<--
serializedBuffer = buffer.join('') + character;
lastCommentStartAt = serializedBuffer.lastIndexOf(Marker.FORWARD_SLASH + Marker.ASTERISK);
serializedBufferPart = serializedBuffer.substring(0, lastCommentStartAt);
lastToken = [Token.RAW, serializedBufferPart, [originalMetadata(metadata, serializedBufferPart, externalContext)]];
newTokens.push(lastToken);
serializedBufferPart = serializedBuffer.substring(lastCommentStartAt);
metadata = [position.line, position.column - serializedBufferPart.length + 1, position.source];
lastToken = [Token.COMMENT, serializedBufferPart, [originalMetadata(metadata, serializedBufferPart, externalContext)]];
newTokens.push(lastToken);
isRaw = false;
level = levels.pop();
metadata = metadatas.pop() || null;
buffer = buffers.pop() || [];
isBufferEmpty = buffer.length === 0;
} else if (isCommentEnd) {
// comment end, e.g. /* comment */<--
serializedBuffer = buffer.join('').trim() + character;
lastToken = [Token.COMMENT, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]];
newTokens.push(lastToken);
level = levels.pop();
metadata = metadatas.pop() || null;
buffer = buffers.pop() || [];
isBufferEmpty = buffer.length === 0;
} else if (isCommentEndMarker && source[position.index + 1] != Marker.ASTERISK) {
externalContext.warnings.push('Unexpected \'*/\' at ' + formatPosition([position.line, position.column, position.source]) + '.');
buffer = [];
isBufferEmpty = true;
} else if (character == Marker.SINGLE_QUOTE && !isQuoted) {
// single quotation start, e.g. a[href^='https<--
levels.push(level);
level = Level.SINGLE_QUOTE;
buffer.push(character);
isBufferEmpty = false;
} else if (character == Marker.SINGLE_QUOTE && level == Level.SINGLE_QUOTE) {
// single quotation end, e.g. a[href^='https'<--
level = levels.pop();
buffer.push(character);
isBufferEmpty = false;
} else if (character == Marker.DOUBLE_QUOTE && !isQuoted) {
// double quotation start, e.g. a[href^="<--
levels.push(level);
level = Level.DOUBLE_QUOTE;
buffer.push(character);
isBufferEmpty = false;
} else if (character == Marker.DOUBLE_QUOTE && level == Level.DOUBLE_QUOTE) {
// double quotation end, e.g. a[href^="https"<--
level = levels.pop();
buffer.push(character);
isBufferEmpty = false;
} else if (character != Marker.CLOSE_ROUND_BRACKET && character != Marker.OPEN_ROUND_BRACKET && level != Level.COMMENT && !isQuoted && roundBracketLevel > 0) {
// character inside any function, e.g. hsla(.<--
buffer.push(character);
isBufferEmpty = false;
} else if (character == Marker.OPEN_ROUND_BRACKET && !isQuoted && level != Level.COMMENT && !seekingValue) {
// round open bracket, e.g. @import url(<--
buffer.push(character);
isBufferEmpty = false;
roundBracketLevel++;
} else if (character == Marker.CLOSE_ROUND_BRACKET && !isQuoted && level != Level.COMMENT && !seekingValue) {
// round open bracket, e.g. @import url(test.css)<--
buffer.push(character);
isBufferEmpty = false;
roundBracketLevel--;
} else if (character == Marker.SEMICOLON && level == Level.BLOCK && buffer[0] == Marker.AT) {
// semicolon ending rule at block level, e.g. @import '...';<--
serializedBuffer = buffer.join('').trim();
allTokens.push([Token.AT_RULE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
buffer = [];
isBufferEmpty = true;
} else if (character == Marker.COMMA && level == Level.BLOCK && ruleToken) {
// comma separator at block level, e.g. a,div,<--
serializedBuffer = buffer.join('').trim();
ruleToken[1].push([tokenScopeFrom(ruleToken[0]), serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext, ruleToken[1].length)]]);
buffer = [];
isBufferEmpty = true;
} else if (character == Marker.COMMA && level == Level.BLOCK && tokenTypeFrom(buffer) == Token.AT_RULE) {
// comma separator at block level, e.g. @import url(...) screen,<--
// keep iterating as end semicolon will create the token
buffer.push(character);
isBufferEmpty = false;
} else if (character == Marker.COMMA && level == Level.BLOCK) {
// comma separator at block level, e.g. a,<--
ruleToken = [tokenTypeFrom(buffer), [], []];
serializedBuffer = buffer.join('').trim();
ruleToken[1].push([tokenScopeFrom(ruleToken[0]), serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext, 0)]]);
buffer = [];
isBufferEmpty = true;
} else if (character == Marker.OPEN_CURLY_BRACKET && level == Level.BLOCK && ruleToken && ruleToken[0] == Token.NESTED_BLOCK) {
// open brace opening at-rule at block level, e.g. @media{<--
serializedBuffer = buffer.join('').trim();
ruleToken[1].push([Token.NESTED_BLOCK_SCOPE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
allTokens.push(ruleToken);
levels.push(level);
position.column++;
position.index++;
buffer = [];
isBufferEmpty = true;
ruleToken[2] = intoTokens(source, externalContext, internalContext, true);
ruleToken = null;
} else if (character == Marker.OPEN_CURLY_BRACKET && level == Level.BLOCK && tokenTypeFrom(buffer) == Token.NESTED_BLOCK) {
// open brace opening at-rule at block level, e.g. @media{<--
serializedBuffer = buffer.join('').trim();
ruleToken = ruleToken || [Token.NESTED_BLOCK, [], []];
ruleToken[1].push([Token.NESTED_BLOCK_SCOPE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
allTokens.push(ruleToken);
levels.push(level);
position.column++;
position.index++;
buffer = [];
isBufferEmpty = true;
ruleToken[2] = intoTokens(source, externalContext, internalContext, true);
ruleToken = null;
} else if (character == Marker.OPEN_CURLY_BRACKET && level == Level.BLOCK) {
// open brace opening rule at block level, e.g. div{<--
serializedBuffer = buffer.join('').trim();
ruleToken = ruleToken || [tokenTypeFrom(buffer), [], []];
ruleToken[1].push([tokenScopeFrom(ruleToken[0]), serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext, ruleToken[1].length)]]);
newTokens = ruleToken[2];
allTokens.push(ruleToken);
levels.push(level);
level = Level.RULE;
buffer = [];
isBufferEmpty = true;
} else if (character == Marker.OPEN_CURLY_BRACKET && level == Level.RULE && seekingValue) {
// open brace opening rule at rule level, e.g. div{--variable:{<--
ruleTokens.push(ruleToken);
ruleToken = [Token.PROPERTY_BLOCK, []];
propertyToken.push(ruleToken);
newTokens = ruleToken[1];
levels.push(level);
level = Level.RULE;
seekingValue = false;
} else if (character == Marker.OPEN_CURLY_BRACKET && level == Level.RULE && isPageMarginBox(buffer)) {
// open brace opening page-margin box at rule level, e.g. @page{@top-center{<--
serializedBuffer = buffer.join('').trim();
ruleTokens.push(ruleToken);
ruleToken = [Token.AT_RULE_BLOCK, [], []];
ruleToken[1].push([Token.AT_RULE_BLOCK_SCOPE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
newTokens.push(ruleToken);
newTokens = ruleToken[2];
levels.push(level);
level = Level.RULE;
buffer = [];
isBufferEmpty = true;
} else if (character == Marker.COLON && level == Level.RULE && !seekingValue) {
// colon at rule level, e.g. a{color:<--
serializedBuffer = buffer.join('').trim();
propertyToken = [Token.PROPERTY, [Token.PROPERTY_NAME, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]];
newTokens.push(propertyToken);
seekingValue = true;
buffer = [];
isBufferEmpty = true;
} else if (character == Marker.SEMICOLON && level == Level.RULE && propertyToken && ruleTokens.length > 0 && !isBufferEmpty && buffer[0] == Marker.AT) {
// semicolon at rule level for at-rule, e.g. a{--color:{@apply(--other-color);<--
serializedBuffer = buffer.join('').trim();
ruleToken[1].push([Token.AT_RULE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
buffer = [];
isBufferEmpty = true;
} else if (character == Marker.SEMICOLON && level == Level.RULE && propertyToken && !isBufferEmpty) {
// semicolon at rule level, e.g. a{color:red;<--
serializedBuffer = buffer.join('').trim();
propertyToken.push([Token.PROPERTY_VALUE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
propertyToken = null;
seekingValue = false;
buffer = [];
isBufferEmpty = true;
} else if (character == Marker.SEMICOLON && level == Level.RULE && propertyToken && isBufferEmpty && isVariable && !propertyToken[2]) {
// semicolon after empty variable value at rule level, e.g. a{--color: ;<--
propertyToken.push([Token.PROPERTY_VALUE, ' ', [originalMetadata(metadata, ' ', externalContext)]]);
isVariable = false;
propertyToken = null;
seekingValue = false;
} else if (character == Marker.SEMICOLON && level == Level.RULE && propertyToken && isBufferEmpty) {
// semicolon after bracketed value at rule level, e.g. a{color:rgb(...);<--
propertyToken = null;
seekingValue = false;
} else if (character == Marker.SEMICOLON && level == Level.RULE && !isBufferEmpty && buffer[0] == Marker.AT) {
// semicolon for at-rule at rule level, e.g. a{@apply(--variable);<--
serializedBuffer = buffer.join('');
newTokens.push([Token.AT_RULE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
seekingValue = false;
buffer = [];
isBufferEmpty = true;
} else if (character == Marker.SEMICOLON && level == Level.RULE && seekingPropertyBlockClosing) {
// close brace after a property block at rule level, e.g. a{--custom:{color:red;};<--
seekingPropertyBlockClosing = false;
buffer = [];
isBufferEmpty = true;
} else if (character == Marker.SEMICOLON && level == Level.RULE && isBufferEmpty) {
// stray semicolon at rule level, e.g. a{;<--
// noop
} else if (character == Marker.CLOSE_CURLY_BRACKET && level == Level.RULE && propertyToken && seekingValue && !isBufferEmpty && ruleTokens.length > 0) {
// close brace at rule level, e.g. a{--color:{color:red}<--
serializedBuffer = buffer.join('');
propertyToken.push([Token.PROPERTY_VALUE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
propertyToken = null;
ruleToken = ruleTokens.pop();
newTokens = ruleToken[2];
level = levels.pop();
seekingValue = false;
buffer = [];
isBufferEmpty = true;
} else if (character == Marker.CLOSE_CURLY_BRACKET && level == Level.RULE && propertyToken && !isBufferEmpty && buffer[0] == Marker.AT && ruleTokens.length > 0) {
// close brace at rule level for at-rule, e.g. a{--color:{@apply(--other-color)}<--
serializedBuffer = buffer.join('');
ruleToken[1].push([Token.AT_RULE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
propertyToken = null;
ruleToken = ruleTokens.pop();
newTokens = ruleToken[2];
level = levels.pop();
seekingValue = false;
buffer = [];
isBufferEmpty = true;
} else if (character == Marker.CLOSE_CURLY_BRACKET && level == Level.RULE && propertyToken && ruleTokens.length > 0) {
// close brace at rule level after space, e.g. a{--color:{color:red }<--
propertyToken = null;
ruleToken = ruleTokens.pop();
newTokens = ruleToken[2];
level = levels.pop();
seekingValue = false;
} else if (character == Marker.CLOSE_CURLY_BRACKET && level == Level.RULE && propertyToken && !isBufferEmpty) {
// close brace at rule level, e.g. a{color:red}<--
serializedBuffer = buffer.join('');
propertyToken.push([Token.PROPERTY_VALUE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
propertyToken = null;
ruleToken = ruleTokens.pop();
newTokens = allTokens;
level = levels.pop();
seekingValue = false;
buffer = [];
isBufferEmpty = true;
} else if (character == Marker.CLOSE_CURLY_BRACKET && level == Level.RULE && !isBufferEmpty && buffer[0] == Marker.AT) {
// close brace after at-rule at rule level, e.g. a{@apply(--variable)}<--
propertyToken = null;
ruleToken = null;
serializedBuffer = buffer.join('').trim();
newTokens.push([Token.AT_RULE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
newTokens = allTokens;
level = levels.pop();
seekingValue = false;
buffer = [];
isBufferEmpty = true;
} else if (character == Marker.CLOSE_CURLY_BRACKET && level == Level.RULE && levels[levels.length - 1] == Level.RULE) {
// close brace after a property block at rule level, e.g. a{--custom:{color:red;}<--
propertyToken = null;
ruleToken = ruleTokens.pop();
newTokens = ruleToken[2];
level = levels.pop();
seekingValue = false;
seekingPropertyBlockClosing = true;
buffer = [];
isBufferEmpty = true;
} else if (character == Marker.CLOSE_CURLY_BRACKET && level == Level.RULE && isVariable && propertyToken && !propertyToken[2]) {
// close brace after an empty variable declaration inside a rule, e.g. a{--color: }<--
propertyToken.push([Token.PROPERTY_VALUE, ' ', [originalMetadata(metadata, ' ', externalContext)]]);
isVariable = false;
propertyToken = null;
ruleToken = null;
newTokens = allTokens;
level = levels.pop();
seekingValue = false;
} else if (character == Marker.CLOSE_CURLY_BRACKET && level == Level.RULE) {
// close brace after a rule, e.g. a{color:red;}<--
propertyToken = null;
ruleToken = null;
newTokens = allTokens;
level = levels.pop();
seekingValue = false;
} else if (character == Marker.CLOSE_CURLY_BRACKET && level == Level.BLOCK && !isNested && position.index <= source.length - 1) {
// stray close brace at block level, e.g. a{color:red}color:blue}<--
externalContext.warnings.push('Unexpected \'}\' at ' + formatPosition([position.line, position.column, position.source]) + '.');
buffer.push(character);
isBufferEmpty = false;
} else if (character == Marker.CLOSE_CURLY_BRACKET && level == Level.BLOCK) {
// close brace at block level, e.g. @media screen {...}<--
break;
} else if (character == Marker.OPEN_ROUND_BRACKET && level == Level.RULE && seekingValue) {
// round open bracket, e.g. a{color:hsla(<--
buffer.push(character);
isBufferEmpty = false;
roundBracketLevel++;
} else if (character == Marker.CLOSE_ROUND_BRACKET && level == Level.RULE && seekingValue && roundBracketLevel == 1) {
// round close bracket, e.g. a{color:hsla(0,0%,0%)<--
buffer.push(character);
isBufferEmpty = false;
serializedBuffer = buffer.join('').trim();
propertyToken.push([Token.PROPERTY_VALUE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
roundBracketLevel--;
buffer = [];
isBufferEmpty = true;
} else if (character == Marker.CLOSE_ROUND_BRACKET && level == Level.RULE && seekingValue) {
// round close bracket within other brackets, e.g. a{width:calc((10rem / 2)<--
buffer.push(character);
isBufferEmpty = false;
roundBracketLevel--;
} else if (character == Marker.FORWARD_SLASH && source[position.index + 1] != Marker.ASTERISK && level == Level.RULE && seekingValue && !isBufferEmpty) {
// forward slash within a property, e.g. a{background:url(image.png) 0 0/<--
serializedBuffer = buffer.join('').trim();
propertyToken.push([Token.PROPERTY_VALUE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
propertyToken.push([Token.PROPERTY_VALUE, character, [[position.line, position.column, position.source]]]);
buffer = [];
isBufferEmpty = true;
} else if (character == Marker.FORWARD_SLASH && source[position.index + 1] != Marker.ASTERISK && level == Level.RULE && seekingValue) {
// forward slash within a property after space, e.g. a{background:url(image.png) 0 0 /<--
propertyToken.push([Token.PROPERTY_VALUE, character, [[position.line, position.column, position.source]]]);
buffer = [];
isBufferEmpty = true;
} else if (character == Marker.COMMA && level == Level.RULE && seekingValue && !isBufferEmpty) {
// comma within a property, e.g. a{background:url(image.png),<--
serializedBuffer = buffer.join('').trim();
propertyToken.push([Token.PROPERTY_VALUE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
propertyToken.push([Token.PROPERTY_VALUE, character, [[position.line, position.column, position.source]]]);
buffer = [];
isBufferEmpty = true;
} else if (character == Marker.COMMA && level == Level.RULE && seekingValue) {
// comma within a property after space, e.g. a{background:url(image.png) ,<--
propertyToken.push([Token.PROPERTY_VALUE, character, [[position.line, position.column, position.source]]]);
buffer = [];
isBufferEmpty = true;
} else if (character == Marker.CLOSE_SQUARE_BRACKET && propertyToken && propertyToken.length > 1 && !isBufferEmpty && isRepeatToken(buffer)) {
buffer.push(character);
serializedBuffer = buffer.join('').trim();
propertyToken[propertyToken.length - 1][1] += serializedBuffer;
buffer = [];
isBufferEmpty = true;
} else if ((isSpace || (isNewLineNix && !isNewLineWin)) && level == Level.RULE && seekingValue && propertyToken && !isBufferEmpty) {
// space or *nix newline within property, e.g. a{margin:0 <--
serializedBuffer = buffer.join('').trim();
propertyToken.push([Token.PROPERTY_VALUE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
buffer = [];
isBufferEmpty = true;
} else if (isNewLineWin && level == Level.RULE && seekingValue && propertyToken && buffer.length > 1) {
// win newline within property, e.g. a{margin:0\r\n<--
serializedBuffer = buffer.join('').trim();
propertyToken.push([Token.PROPERTY_VALUE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
buffer = [];
isBufferEmpty = true;
} else if (isNewLineWin && level == Level.RULE && seekingValue) {
// win newline
buffer = [];
isBufferEmpty = true;
} else if (isNewLineWin && buffer.length == 1) {
// ignore windows newline which is composed of two characters
buffer.pop();
isBufferEmpty = buffer.length === 0;
} else if (!isBufferEmpty || !isSpace && !isNewLineNix && !isNewLineWin && !isCarriageReturn) {
// any character
buffer.push(character);
isBufferEmpty = false;
}
wasEscaped = isEscaped;
isEscaped = !wasEscaped && character == Marker.BACK_SLASH;
wasCommentStart = isCommentStart;
wasCommentEnd = isCommentEnd;
position.line = (isNewLineWin || isNewLineNix || isCarriageReturn) ? position.line + 1 : position.line;
position.column = (isNewLineWin || isNewLineNix || isCarriageReturn) ? 0 : position.column + 1;
}
if (seekingValue) {
externalContext.warnings.push('Missing \'}\' at ' + formatPosition([position.line, position.column, position.source]) + '.');
}
if (seekingValue && buffer.length > 0) {
serializedBuffer = buffer.join('').replace(TAIL_BROKEN_VALUE_PATTERN, '');
propertyToken.push([Token.PROPERTY_VALUE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
buffer = [];
}
if (buffer.length > 0) {
externalContext.warnings.push('Invalid character(s) \'' + buffer.join('') + '\' at ' + formatPosition(metadata) + '. Ignoring.');
}
return allTokens;
}
function isIgnoreStartComment(buffer) {
return IGNORE_START_COMMENT_PATTERN.test(buffer.join('') + Marker.FORWARD_SLASH);
}
function isIgnoreEndComment(buffer) {
return IGNORE_END_COMMENT_PATTERN.test(buffer.join('') + Marker.FORWARD_SLASH);
}
function originalMetadata(metadata, value, externalContext, selectorFallbacks) {
var source = metadata[2];
return externalContext.inputSourceMapTracker.isTracking(source) ?
externalContext.inputSourceMapTracker.originalPositionFor(metadata, value.length, selectorFallbacks) :
metadata;
}
function tokenTypeFrom(buffer) {
var isAtRule = buffer[0] == Marker.AT || buffer[0] == Marker.UNDERSCORE;
var ruleWord = buffer.join('').split(RULE_WORD_SEPARATOR_PATTERN)[0];
if (isAtRule && BLOCK_RULES.indexOf(ruleWord) > -1) {
return Token.NESTED_BLOCK;
} else if (isAtRule && AT_RULES.indexOf(ruleWord) > -1) {
return Token.AT_RULE;
} else if (isAtRule) {
return Token.AT_RULE_BLOCK;
} else {
return Token.RULE;
}
}
function tokenScopeFrom(tokenType) {
if (tokenType == Token.RULE) {
return Token.RULE_SCOPE;
} else if (tokenType == Token.NESTED_BLOCK) {
return Token.NESTED_BLOCK_SCOPE;
} else if (tokenType == Token.AT_RULE_BLOCK) {
return Token.AT_RULE_BLOCK_SCOPE;
}
}
function isPageMarginBox(buffer) {
var serializedBuffer = buffer.join('').trim();
return PAGE_MARGIN_BOXES.indexOf(serializedBuffer) > -1 || EXTRA_PAGE_BOXES.indexOf(serializedBuffer) > -1;
}
function isRepeatToken(buffer) {
return REPEAT_PATTERN.test(buffer.join('') + Marker.CLOSE_SQUARE_BRACKET);
}
module.exports = tokenize;