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jashkenas--coffeescript/lib/coffee-script/lexer.js

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// Generated by CoffeeScript 1.9.0
(function() {
var BOM, BOOL, CALLABLE, CODE, COFFEE_ALIASES, COFFEE_ALIAS_MAP, COFFEE_KEYWORDS, COMMENT, COMPARE, COMPOUND_ASSIGN, HERECOMMENT_ILLEGAL, HEREDOC_DOUBLE, HEREDOC_INDENT, HEREDOC_SINGLE, HEREGEX, HEREGEX_OMIT, IDENTIFIER, INDENTABLE_CLOSERS, INDEXABLE, INVERSES, JSTOKEN, JS_FORBIDDEN, JS_KEYWORDS, LEADING_BLANK_LINE, LINE_BREAK, LINE_CONTINUER, LOGIC, Lexer, MATH, MULTILINER, MULTI_DENT, NOT_REGEX, NUMBER, OCTAL_ESCAPE, OPERATOR, POSSIBLY_DIVISION, REGEX, REGEX_FLAGS, REGEX_ILLEGAL, RELATION, RESERVED, Rewriter, SHIFT, STRICT_PROSCRIBED, STRING_DOUBLE, STRING_OMIT, STRING_SINGLE, STRING_START, TRAILING_BLANK_LINE, TRAILING_SPACES, UNARY, UNARY_MATH, VALID_FLAGS, WHITESPACE, compact, count, invertLiterate, key, last, locationDataToString, ref, ref1, repeat, starts, throwSyntaxError,
indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; };
ref = require('./rewriter'), Rewriter = ref.Rewriter, INVERSES = ref.INVERSES;
ref1 = require('./helpers'), count = ref1.count, starts = ref1.starts, compact = ref1.compact, last = ref1.last, repeat = ref1.repeat, invertLiterate = ref1.invertLiterate, locationDataToString = ref1.locationDataToString, throwSyntaxError = ref1.throwSyntaxError;
exports.Lexer = Lexer = (function() {
function Lexer() {}
Lexer.prototype.tokenize = function(code, opts) {
var consumed, end, i, ref2;
if (opts == null) {
opts = {};
}
this.literate = opts.literate;
this.indent = 0;
this.baseIndent = 0;
this.indebt = 0;
this.outdebt = 0;
this.indents = [];
this.ends = [];
this.tokens = [];
this.chunkLine = opts.line || 0;
this.chunkColumn = opts.column || 0;
code = this.clean(code);
i = 0;
while (this.chunk = code.slice(i)) {
consumed = this.identifierToken() || this.commentToken() || this.whitespaceToken() || this.lineToken() || this.stringToken() || this.numberToken() || this.regexToken() || this.jsToken() || this.literalToken();
ref2 = this.getLineAndColumnFromChunk(consumed), this.chunkLine = ref2[0], this.chunkColumn = ref2[1];
i += consumed;
if (opts.untilBalanced && this.ends.length === 0) {
return {
tokens: this.tokens,
index: i
};
}
}
this.closeIndentation();
if (end = this.ends.pop()) {
throwSyntaxError("missing " + end.tag, end.origin[2]);
}
if (opts.rewrite === false) {
return this.tokens;
}
return (new Rewriter).rewrite(this.tokens);
};
Lexer.prototype.clean = function(code) {
if (code.charCodeAt(0) === BOM) {
code = code.slice(1);
}
code = code.replace(/\r/g, '').replace(TRAILING_SPACES, '');
if (WHITESPACE.test(code)) {
code = "\n" + code;
this.chunkLine--;
}
if (this.literate) {
code = invertLiterate(code);
}
return code;
};
Lexer.prototype.identifierToken = function() {
var colon, colonOffset, forcedIdentifier, id, idLength, input, match, poppedToken, prev, ref2, ref3, ref4, tag, tagToken;
if (!(match = IDENTIFIER.exec(this.chunk))) {
return 0;
}
input = match[0], id = match[1], colon = match[2];
idLength = id.length;
poppedToken = void 0;
if (id === 'own' && this.tag() === 'FOR') {
this.token('OWN', id);
return id.length;
}
if (id === 'from' && this.tag() === 'YIELD') {
this.token('FROM', id);
return id.length;
}
forcedIdentifier = colon || (prev = last(this.tokens)) && (((ref2 = prev[0]) === '.' || ref2 === '?.' || ref2 === '::' || ref2 === '?::') || !prev.spaced && prev[0] === '@');
tag = 'IDENTIFIER';
if (!forcedIdentifier && (indexOf.call(JS_KEYWORDS, id) >= 0 || indexOf.call(COFFEE_KEYWORDS, id) >= 0)) {
tag = id.toUpperCase();
if (tag === 'WHEN' && (ref3 = this.tag(), indexOf.call(LINE_BREAK, ref3) >= 0)) {
tag = 'LEADING_WHEN';
} else if (tag === 'FOR') {
this.seenFor = true;
} else if (tag === 'UNLESS') {
tag = 'IF';
} else if (indexOf.call(UNARY, tag) >= 0) {
tag = 'UNARY';
} else if (indexOf.call(RELATION, tag) >= 0) {
if (tag !== 'INSTANCEOF' && this.seenFor) {
tag = 'FOR' + tag;
this.seenFor = false;
} else {
tag = 'RELATION';
if (this.value() === '!') {
poppedToken = this.tokens.pop();
id = '!' + id;
}
}
}
}
if (indexOf.call(JS_FORBIDDEN, id) >= 0) {
if (forcedIdentifier) {
tag = 'IDENTIFIER';
id = new String(id);
id.reserved = true;
} else if (indexOf.call(RESERVED, id) >= 0) {
this.error("reserved word \"" + id + "\"");
}
}
if (!forcedIdentifier) {
if (indexOf.call(COFFEE_ALIASES, id) >= 0) {
id = COFFEE_ALIAS_MAP[id];
}
tag = (function() {
switch (id) {
case '!':
return 'UNARY';
case '==':
case '!=':
return 'COMPARE';
case '&&':
case '||':
return 'LOGIC';
case 'true':
case 'false':
return 'BOOL';
case 'break':
case 'continue':
return 'STATEMENT';
default:
return tag;
}
})();
}
tagToken = this.token(tag, id, 0, idLength);
tagToken.variable = !forcedIdentifier;
if (poppedToken) {
ref4 = [poppedToken[2].first_line, poppedToken[2].first_column], tagToken[2].first_line = ref4[0], tagToken[2].first_column = ref4[1];
}
if (colon) {
colonOffset = input.lastIndexOf(':');
this.token(':', ':', colonOffset, colon.length);
}
return input.length;
};
Lexer.prototype.numberToken = function() {
var binaryLiteral, lexedLength, match, number, octalLiteral;
if (!(match = NUMBER.exec(this.chunk))) {
return 0;
}
number = match[0];
if (/^0[BOX]/.test(number)) {
this.error("radix prefix '" + number + "' must be lowercase");
} else if (/E/.test(number) && !/^0x/.test(number)) {
this.error("exponential notation '" + number + "' must be indicated with a lowercase 'e'");
} else if (/^0\d*[89]/.test(number)) {
this.error("decimal literal '" + number + "' must not be prefixed with '0'");
} else if (/^0\d+/.test(number)) {
this.error("octal literal '" + number + "' must be prefixed with '0o'");
}
lexedLength = number.length;
if (octalLiteral = /^0o([0-7]+)/.exec(number)) {
number = '0x' + parseInt(octalLiteral[1], 8).toString(16);
}
if (binaryLiteral = /^0b([01]+)/.exec(number)) {
number = '0x' + parseInt(binaryLiteral[1], 2).toString(16);
}
this.token('NUMBER', number, 0, lexedLength);
return lexedLength;
};
Lexer.prototype.stringToken = function() {
var $, attempt, doc, end, heredoc, i, indent, indentRegex, match, quote, ref2, ref3, regex, token, tokens;
quote = (STRING_START.exec(this.chunk) || [])[0];
if (!quote) {
return 0;
}
regex = (function() {
switch (quote) {
case "'":
return STRING_SINGLE;
case '"':
return STRING_DOUBLE;
case "'''":
return HEREDOC_SINGLE;
case '"""':
return HEREDOC_DOUBLE;
}
})();
heredoc = quote.length === 3;
ref2 = this.matchWithInterpolations(regex, quote), tokens = ref2.tokens, end = ref2.index;
$ = tokens.length - 1;
if (heredoc) {
indent = null;
doc = ((function() {
var j, len, results;
results = [];
for (i = j = 0, len = tokens.length; j < len; i = ++j) {
token = tokens[i];
if (token[0] === 'NEOSTRING') {
results.push(token[1]);
}
}
return results;
})()).join('#{}');
while (match = HEREDOC_INDENT.exec(doc)) {
attempt = match[1];
if (indent === null || (0 < (ref3 = attempt.length) && ref3 < indent.length)) {
indent = attempt;
}
}
if (indent) {
indentRegex = RegExp("^" + indent, "gm");
}
this.mergeInterpolationTokens(tokens, quote[0], (function(_this) {
return function(value, i) {
value = _this.formatString(value);
if (i === 0) {
value = value.replace(LEADING_BLANK_LINE, '');
}
if (i === $) {
value = value.replace(TRAILING_BLANK_LINE, '');
}
value = value.replace(indentRegex, '');
value = value.replace(MULTILINER, '\\n');
return value;
};
})(this));
} else {
this.mergeInterpolationTokens(tokens, quote, (function(_this) {
return function(value, i) {
value = _this.formatString(value);
value = value.replace(STRING_OMIT, function(match, offset) {
if ((i === 0 && offset === 0) || (i === $ && offset + match.length === value.length)) {
return '';
} else {
return ' ';
}
});
return value;
};
})(this));
}
return end;
};
Lexer.prototype.commentToken = function() {
var comment, here, match;
if (!(match = this.chunk.match(COMMENT))) {
return 0;
}
comment = match[0], here = match[1];
if (here) {
if (match = HERECOMMENT_ILLEGAL.exec(comment)) {
this.error("block comments cannot contain " + match[0], match.index);
}
if (here.indexOf('\n') >= 0) {
here = here.replace(RegExp("\\n" + (repeat(' ', this.indent)), "g"), '\n');
}
this.token('HERECOMMENT', here, 0, comment.length);
}
return comment.length;
};
Lexer.prototype.jsToken = function() {
var match, script;
if (!(this.chunk.charAt(0) === '`' && (match = JSTOKEN.exec(this.chunk)))) {
return 0;
}
this.token('JS', (script = match[0]).slice(1, -1), 0, script.length);
return script.length;
};
Lexer.prototype.regexToken = function() {
var closed, end, errorToken, flags, index, match, prev, re, ref2, ref3, regex, rparen, tokens;
switch (false) {
case !(match = REGEX_ILLEGAL.exec(this.chunk)):
this.error("regular expressions cannot begin with " + match[2], match.index + match[1].length);
break;
case !(match = this.matchWithInterpolations(HEREGEX, '///')):
tokens = match.tokens, index = match.index;
break;
case !(match = REGEX.exec(this.chunk)):
regex = match[0], closed = match[1];
index = regex.length;
prev = last(this.tokens);
if (prev) {
if (prev.spaced && (ref2 = prev[0], indexOf.call(CALLABLE, ref2) >= 0) && !prev.stringEnd && !prev.regexEnd) {
if (!closed || POSSIBLY_DIVISION.test(regex)) {
return 0;
}
} else if (ref3 = prev[0], indexOf.call(NOT_REGEX, ref3) >= 0) {
return 0;
}
}
if (!closed) {
this.error('missing / (unclosed regex)');
}
break;
default:
return 0;
}
flags = REGEX_FLAGS.exec(this.chunk.slice(index))[0];
end = index + flags.length;
errorToken = this.makeToken('REGEX', this.chunk.slice(0, end), 0, end);
switch (false) {
case !!VALID_FLAGS.test(flags):
this.error("invalid regular expression flags " + flags, index);
break;
case !regex:
this.token('REGEX', "" + regex + flags);
break;
case tokens.length !== 1:
re = this.formatHeregex(tokens[0][1]).replace(/\//g, '\\/');
this.token('REGEX', "/" + (re || '(?:)') + "/" + flags, 0, end, errorToken);
break;
default:
this.token('IDENTIFIER', 'RegExp', 0, 0);
this.token('CALL_START', '(', 0, 0, errorToken);
this.mergeInterpolationTokens(tokens, '"', (function(_this) {
return function(value) {
return _this.formatHeregex(value).replace(/\\/g, '\\\\');
};
})(this));
if (flags) {
this.token(',', ',', index, 0);
this.token('STRING', '"' + flags + '"', index, flags.length);
}
rparen = this.token(')', ')', end, 0);
rparen.regexEnd = true;
}
return end;
};
Lexer.prototype.lineToken = function() {
var diff, indent, match, noNewlines, size;
if (!(match = MULTI_DENT.exec(this.chunk))) {
return 0;
}
indent = match[0];
this.seenFor = false;
size = indent.length - 1 - indent.lastIndexOf('\n');
noNewlines = this.unfinished();
if (size - this.indebt === this.indent) {
if (noNewlines) {
this.suppressNewlines();
} else {
this.newlineToken(0);
}
return indent.length;
}
if (size > this.indent) {
if (noNewlines) {
this.indebt = size - this.indent;
this.suppressNewlines();
return indent.length;
}
if (!this.tokens.length) {
this.baseIndent = this.indent = size;
return indent.length;
}
diff = size - this.indent + this.outdebt;
this.token('INDENT', diff, indent.length - size, size);
this.indents.push(diff);
this.ends.push({
tag: 'OUTDENT'
});
this.outdebt = this.indebt = 0;
this.indent = size;
} else if (size < this.baseIndent) {
this.error('missing indentation', indent.length);
} else {
this.indebt = 0;
this.outdentToken(this.indent - size, noNewlines, indent.length);
}
return indent.length;
};
Lexer.prototype.outdentToken = function(moveOut, noNewlines, outdentLength) {
var decreasedIndent, dent, lastIndent, ref2;
decreasedIndent = this.indent - moveOut;
while (moveOut > 0) {
lastIndent = this.indents[this.indents.length - 1];
if (!lastIndent) {
moveOut = 0;
} else if (lastIndent === this.outdebt) {
moveOut -= this.outdebt;
this.outdebt = 0;
} else if (lastIndent < this.outdebt) {
this.outdebt -= lastIndent;
moveOut -= lastIndent;
} else {
dent = this.indents.pop() + this.outdebt;
if (outdentLength && (ref2 = this.chunk[outdentLength], indexOf.call(INDENTABLE_CLOSERS, ref2) >= 0)) {
decreasedIndent -= dent - moveOut;
moveOut = dent;
}
this.outdebt = 0;
this.pair('OUTDENT');
this.token('OUTDENT', moveOut, 0, outdentLength);
moveOut -= dent;
}
}
if (dent) {
this.outdebt -= moveOut;
}
while (this.value() === ';') {
this.tokens.pop();
}
if (!(this.tag() === 'TERMINATOR' || noNewlines)) {
this.token('TERMINATOR', '\n', outdentLength, 0);
}
this.indent = decreasedIndent;
return this;
};
Lexer.prototype.whitespaceToken = function() {
var match, nline, prev;
if (!((match = WHITESPACE.exec(this.chunk)) || (nline = this.chunk.charAt(0) === '\n'))) {
return 0;
}
prev = last(this.tokens);
if (prev) {
prev[match ? 'spaced' : 'newLine'] = true;
}
if (match) {
return match[0].length;
} else {
return 0;
}
};
Lexer.prototype.newlineToken = function(offset) {
while (this.value() === ';') {
this.tokens.pop();
}
if (this.tag() !== 'TERMINATOR') {
this.token('TERMINATOR', '\n', offset, 0);
}
return this;
};
Lexer.prototype.suppressNewlines = function() {
if (this.value() === '\\') {
this.tokens.pop();
}
return this;
};
Lexer.prototype.literalToken = function() {
var match, prev, ref2, ref3, ref4, ref5, tag, token, value;
if (match = OPERATOR.exec(this.chunk)) {
value = match[0];
if (CODE.test(value)) {
this.tagParameters();
}
} else {
value = this.chunk.charAt(0);
}
tag = value;
prev = last(this.tokens);
if (value === '=' && prev) {
if (!prev[1].reserved && (ref2 = prev[1], indexOf.call(JS_FORBIDDEN, ref2) >= 0)) {
this.error("reserved word \"" + (this.value()) + "\" can't be assigned");
}
if ((ref3 = prev[1]) === '||' || ref3 === '&&') {
prev[0] = 'COMPOUND_ASSIGN';
prev[1] += '=';
return value.length;
}
}
if (value === ';') {
this.seenFor = false;
tag = 'TERMINATOR';
} else if (indexOf.call(MATH, value) >= 0) {
tag = 'MATH';
} else if (indexOf.call(COMPARE, value) >= 0) {
tag = 'COMPARE';
} else if (indexOf.call(COMPOUND_ASSIGN, value) >= 0) {
tag = 'COMPOUND_ASSIGN';
} else if (indexOf.call(UNARY, value) >= 0) {
tag = 'UNARY';
} else if (indexOf.call(UNARY_MATH, value) >= 0) {
tag = 'UNARY_MATH';
} else if (indexOf.call(SHIFT, value) >= 0) {
tag = 'SHIFT';
} else if (indexOf.call(LOGIC, value) >= 0 || value === '?' && (prev != null ? prev.spaced : void 0)) {
tag = 'LOGIC';
} else if (prev && !prev.spaced) {
if (value === '(' && (ref4 = prev[0], indexOf.call(CALLABLE, ref4) >= 0) && !prev.stringEnd && !prev.regexEnd) {
if (prev[0] === '?') {
prev[0] = 'FUNC_EXIST';
}
tag = 'CALL_START';
} else if (value === '[' && (ref5 = prev[0], indexOf.call(INDEXABLE, ref5) >= 0)) {
tag = 'INDEX_START';
switch (prev[0]) {
case '?':
prev[0] = 'INDEX_SOAK';
}
}
}
token = this.makeToken(tag, value);
switch (value) {
case '(':
case '{':
case '[':
this.ends.push({
tag: INVERSES[value],
origin: token
});
break;
case ')':
case '}':
case ']':
this.pair(value);
}
this.tokens.push(token);
return value.length;
};
Lexer.prototype.tagParameters = function() {
var i, stack, tok, tokens;
if (this.tag() !== ')') {
return this;
}
stack = [];
tokens = this.tokens;
i = tokens.length;
tokens[--i][0] = 'PARAM_END';
while (tok = tokens[--i]) {
switch (tok[0]) {
case ')':
stack.push(tok);
break;
case '(':
case 'CALL_START':
if (stack.length) {
stack.pop();
} else if (tok[0] === '(') {
tok[0] = 'PARAM_START';
return this;
} else {
return this;
}
}
}
return this;
};
Lexer.prototype.closeIndentation = function() {
return this.outdentToken(this.indent);
};
Lexer.prototype.matchWithInterpolations = function(regex, delimiter) {
var close, column, firstToken, index, lastToken, line, nested, offsetInChunk, open, ref2, ref3, ref4, str, strPart, tokens;
tokens = [];
offsetInChunk = delimiter.length;
if (this.chunk.slice(0, offsetInChunk) !== delimiter) {
return null;
}
str = this.chunk.slice(offsetInChunk);
while (true) {
strPart = regex.exec(str)[0];
tokens.push(this.makeToken('NEOSTRING', strPart, offsetInChunk));
str = str.slice(strPart.length);
offsetInChunk += strPart.length;
if (str.slice(0, 2) !== '#{') {
break;
}
ref2 = this.getLineAndColumnFromChunk(offsetInChunk + 1), line = ref2[0], column = ref2[1];
ref3 = new Lexer().tokenize(str.slice(1), {
line: line,
column: column,
untilBalanced: true
}), nested = ref3.tokens, index = ref3.index;
index += 1;
open = nested[0], close = nested[nested.length - 1];
open[0] = open[1] = '(';
close[0] = close[1] = ')';
close.origin = ['', 'end of interpolation', close[2]];
if (((ref4 = nested[1]) != null ? ref4[0] : void 0) === 'TERMINATOR') {
nested.splice(1, 1);
}
tokens.push(['TOKENS', nested]);
str = str.slice(index);
offsetInChunk += index;
}
if (str.slice(0, delimiter.length) !== delimiter) {
this.error("missing " + delimiter);
}
firstToken = tokens[0], lastToken = tokens[tokens.length - 1];
firstToken[2].first_column -= delimiter.length;
lastToken[2].last_column += delimiter.length;
return {
tokens: tokens,
index: offsetInChunk + delimiter.length
};
};
Lexer.prototype.mergeInterpolationTokens = function(tokens, quote, fn) {
var converted, errorToken, firstEmptyStringIndex, firstIndex, firstToken, i, interpolated, j, lastToken, len, locationToken, plusToken, ref2, ref3, rparen, tag, token, tokensToPush, value;
if (interpolated = tokens.length > 1) {
firstToken = tokens[0];
errorToken = [
'', 'interpolation', {
first_line: firstToken[2].last_line,
first_column: firstToken[2].last_column,
last_line: firstToken[2].last_line,
last_column: firstToken[2].last_column + 1
}
];
this.token('(', '(', 0, 0, errorToken);
}
firstIndex = this.tokens.length;
for (i = j = 0, len = tokens.length; j < len; i = ++j) {
token = tokens[i];
tag = token[0], value = token[1];
switch (tag) {
case 'TOKENS':
if (value.length === 2) {
continue;
}
locationToken = value[0];
tokensToPush = value;
break;
case 'NEOSTRING':
converted = fn(token[1], i);
if (converted.length === 0) {
if (i === 0) {
firstEmptyStringIndex = this.tokens.length;
} else {
continue;
}
}
if (i === 2 && (firstEmptyStringIndex != null)) {
this.tokens.splice(firstEmptyStringIndex, 2);
}
token[0] = 'STRING';
token[1] = this.makeString(converted, quote);
locationToken = token;
tokensToPush = [token];
}
if (this.tokens.length > firstIndex) {
plusToken = this.token('+', '+');
plusToken[2] = {
first_line: locationToken[2].first_line,
first_column: locationToken[2].first_column,
last_line: locationToken[2].first_line,
last_column: locationToken[2].first_column
};
}
(ref2 = this.tokens).push.apply(ref2, tokensToPush);
}
if (interpolated) {
ref3 = this.tokens, lastToken = ref3[ref3.length - 1];
rparen = this.token(')', ')');
rparen[2] = [
')', ')', {
first_line: lastToken[2].last_line,
first_column: lastToken[2].last_column + 1,
last_line: lastToken[2].last_line,
last_column: lastToken[2].last_column + 1
}
];
return rparen.stringEnd = true;
}
};
Lexer.prototype.pair = function(tag) {
var ref2, wanted;
if (tag !== (wanted = (ref2 = last(this.ends)) != null ? ref2.tag : void 0)) {
if ('OUTDENT' !== wanted) {
this.error("unmatched " + tag);
}
this.outdentToken(last(this.indents), true);
return this.pair(tag);
}
return this.ends.pop();
};
Lexer.prototype.getLineAndColumnFromChunk = function(offset) {
var column, lineCount, lines, string;
if (offset === 0) {
return [this.chunkLine, this.chunkColumn];
}
if (offset >= this.chunk.length) {
string = this.chunk;
} else {
string = this.chunk.slice(0, +(offset - 1) + 1 || 9e9);
}
lineCount = count(string, '\n');
column = this.chunkColumn;
if (lineCount > 0) {
lines = string.split('\n');
column = last(lines).length;
} else {
column += string.length;
}
return [this.chunkLine + lineCount, column];
};
Lexer.prototype.makeToken = function(tag, value, offsetInChunk, length) {
var lastCharacter, locationData, ref2, ref3, token;
if (offsetInChunk == null) {
offsetInChunk = 0;
}
if (length == null) {
length = value.length;
}
locationData = {};
ref2 = this.getLineAndColumnFromChunk(offsetInChunk), locationData.first_line = ref2[0], locationData.first_column = ref2[1];
lastCharacter = Math.max(0, length - 1);
ref3 = this.getLineAndColumnFromChunk(offsetInChunk + lastCharacter), locationData.last_line = ref3[0], locationData.last_column = ref3[1];
token = [tag, value, locationData];
return token;
};
Lexer.prototype.token = function(tag, value, offsetInChunk, length, origin) {
var token;
token = this.makeToken(tag, value, offsetInChunk, length);
if (origin) {
token.origin = origin;
}
this.tokens.push(token);
return token;
};
Lexer.prototype.tag = function(index, tag) {
var tok;
return (tok = last(this.tokens, index)) && (tag ? tok[0] = tag : tok[0]);
};
Lexer.prototype.value = function(index, val) {
var tok;
return (tok = last(this.tokens, index)) && (val ? tok[1] = val : tok[1]);
};
Lexer.prototype.unfinished = function() {
var ref2;
return LINE_CONTINUER.test(this.chunk) || ((ref2 = this.tag()) === '\\' || ref2 === '.' || ref2 === '?.' || ref2 === '?::' || ref2 === 'UNARY' || ref2 === 'MATH' || ref2 === 'UNARY_MATH' || ref2 === '+' || ref2 === '-' || ref2 === 'YIELD' || ref2 === '**' || ref2 === 'SHIFT' || ref2 === 'RELATION' || ref2 === 'COMPARE' || ref2 === 'LOGIC' || ref2 === 'THROW' || ref2 === 'EXTENDS');
};
Lexer.prototype.formatString = function(str) {
return str.replace(/\\[^\S\n]*(\n|\\)\s*/g, function(escaped, character) {
if (character === '\n') {
return '';
} else {
return escaped;
}
});
};
Lexer.prototype.formatHeregex = function(str) {
return str.replace(HEREGEX_OMIT, '$1$2').replace(MULTILINER, '\\n');
};
Lexer.prototype.makeString = function(body, quote) {
var match;
if (!body) {
return quote + quote;
}
body = body.replace(RegExp("\\\\(" + quote + "|\\\\)", "g"), function(match, contents) {
if (contents === quote) {
return contents;
} else {
return match;
}
});
body = body.replace(RegExp("" + quote, "g"), '\\$&');
if (match = OCTAL_ESCAPE.exec(body)) {
this.error("octal escape sequences are not allowed " + match[2], match.index + match[1].length + 1);
}
return quote + body + quote;
};
Lexer.prototype.error = function(message, offset) {
var first_column, first_line, ref2;
if (offset == null) {
offset = 0;
}
ref2 = this.getLineAndColumnFromChunk(offset), first_line = ref2[0], first_column = ref2[1];
return throwSyntaxError(message, {
first_line: first_line,
first_column: first_column
});
};
return Lexer;
})();
JS_KEYWORDS = ['true', 'false', 'null', 'this', 'new', 'delete', 'typeof', 'in', 'instanceof', 'return', 'throw', 'break', 'continue', 'debugger', 'yield', 'if', 'else', 'switch', 'for', 'while', 'do', 'try', 'catch', 'finally', 'class', 'extends', 'super'];
COFFEE_KEYWORDS = ['undefined', 'then', 'unless', 'until', 'loop', 'of', 'by', 'when'];
COFFEE_ALIAS_MAP = {
and: '&&',
or: '||',
is: '==',
isnt: '!=',
not: '!',
yes: 'true',
no: 'false',
on: 'true',
off: 'false'
};
COFFEE_ALIASES = (function() {
var results;
results = [];
for (key in COFFEE_ALIAS_MAP) {
results.push(key);
}
return results;
})();
COFFEE_KEYWORDS = COFFEE_KEYWORDS.concat(COFFEE_ALIASES);
RESERVED = ['case', 'default', 'function', 'var', 'void', 'with', 'const', 'let', 'enum', 'export', 'import', 'native', 'implements', 'interface', 'package', 'private', 'protected', 'public', 'static'];
STRICT_PROSCRIBED = ['arguments', 'eval', 'yield*'];
JS_FORBIDDEN = JS_KEYWORDS.concat(RESERVED).concat(STRICT_PROSCRIBED);
exports.RESERVED = RESERVED.concat(JS_KEYWORDS).concat(COFFEE_KEYWORDS).concat(STRICT_PROSCRIBED);
exports.STRICT_PROSCRIBED = STRICT_PROSCRIBED;
BOM = 65279;
IDENTIFIER = /^(?!\d)((?:(?!\s)[$\w\x7f-\uffff])+)([^\n\S]*:(?!:))?/;
NUMBER = /^0b[01]+|^0o[0-7]+|^0x[\da-f]+|^\d*\.?\d+(?:e[+-]?\d+)?/i;
OPERATOR = /^(?:[-=]>|[-+*\/%<>&|^!?=]=|>>>=?|([-+:])\1|([&|<>*\/%])\2=?|\?(\.|::)|\.{2,3})/;
WHITESPACE = /^[^\n\S]+/;
COMMENT = /^###([^#][\s\S]*?)(?:###[^\n\S]*|###$)|^(?:\s*#(?!##[^#]).*)+/;
CODE = /^[-=]>/;
MULTI_DENT = /^(?:\n[^\n\S]*)+/;
JSTOKEN = /^`[^\\`]*(?:\\.[^\\`]*)*`/;
STRING_START = /^(?:'''|"""|'|")/;
STRING_SINGLE = /^(?:[^\\']|\\[\s\S])*/;
STRING_DOUBLE = /^(?:[^\\"#]|\\[\s\S]|\#(?!\{))*/;
HEREDOC_SINGLE = /^(?:[^\\']|\\[\s\S]|'(?!''))*/;
HEREDOC_DOUBLE = /^(?:[^\\"#]|\\[\s\S]|"(?!"")|\#(?!\{))*/;
STRING_OMIT = /\s*\n\s*/g;
HEREDOC_INDENT = /\n+([^\n\S]*)(?=\S)/g;
REGEX = /^\/(?!\/)(?:[^[\/\n\\]|\\.|\[(?:\\.|[^\]\n\\])*])*(\/)?/;
REGEX_FLAGS = /^\w*/;
VALID_FLAGS = /^(?!.*(.).*\1)[imgy]*$/;
HEREGEX = /^(?:[^\\\/#]|\\[\s\S]|\/(?!\/\/)|\#(?!\{))*/;
HEREGEX_OMIT = /((?:\\\\)+)|\\(\s|\/)|\s+(?:#.*)?/g;
REGEX_ILLEGAL = /^(\/|\/{3}\s*)(\*)/;
POSSIBLY_DIVISION = /^\/=?\s/;
MULTILINER = /\n/g;
HERECOMMENT_ILLEGAL = /\*\//;
LINE_CONTINUER = /^\s*(?:,|\??\.(?![.\d])|::)/;
OCTAL_ESCAPE = /^((?:\\.|[^\\])*)(\\(?:0[0-7]|[1-7]))/;
LEADING_BLANK_LINE = /^[^\n\S]*\n/;
TRAILING_BLANK_LINE = /\n[^\n\S]*$/;
TRAILING_SPACES = /\s+$/;
COMPOUND_ASSIGN = ['-=', '+=', '/=', '*=', '%=', '||=', '&&=', '?=', '<<=', '>>=', '>>>=', '&=', '^=', '|=', '**=', '//=', '%%='];
UNARY = ['NEW', 'TYPEOF', 'DELETE', 'DO'];
UNARY_MATH = ['!', '~'];
LOGIC = ['&&', '||', '&', '|', '^'];
SHIFT = ['<<', '>>', '>>>'];
COMPARE = ['==', '!=', '<', '>', '<=', '>='];
MATH = ['*', '/', '%', '//', '%%'];
RELATION = ['IN', 'OF', 'INSTANCEOF'];
BOOL = ['TRUE', 'FALSE'];
CALLABLE = ['IDENTIFIER', ')', ']', '?', '@', 'THIS', 'SUPER'];
INDEXABLE = CALLABLE.concat(['NUMBER', 'STRING', 'REGEX', 'BOOL', 'NULL', 'UNDEFINED', '}', '::']);
NOT_REGEX = INDEXABLE.concat(['++', '--']);
LINE_BREAK = ['INDENT', 'OUTDENT', 'TERMINATOR'];
INDENTABLE_CLOSERS = [')', '}', ']'];
}).call(this);
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