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overleaf/services/web/public/js/ace/mode/coffee/lexer.js
James Allen 8715690ce9 Intial open source comment
2014-02-12 10:23:40 +00:00

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/**
* Copyright (c) 2009-2013 Jeremy Ashkenas
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
*/
define(function(require, exports, module) {
// Generated by CoffeeScript 1.6.3
var BOM, BOOL, CALLABLE, CODE, COFFEE_ALIASES, COFFEE_ALIAS_MAP, COFFEE_KEYWORDS, COMMENT, COMPARE, COMPOUND_ASSIGN, HEREDOC, HEREDOC_ILLEGAL, HEREDOC_INDENT, HEREGEX, HEREGEX_OMIT, IDENTIFIER, INDEXABLE, INVERSES, JSTOKEN, JS_FORBIDDEN, JS_KEYWORDS, LINE_BREAK, LINE_CONTINUER, LOGIC, Lexer, MATH, MULTILINER, MULTI_DENT, NOT_REGEX, NOT_SPACED_REGEX, NUMBER, OPERATOR, REGEX, RELATION, RESERVED, Rewriter, SHIFT, SIMPLESTR, STRICT_PROSCRIBED, TRAILING_SPACES, UNARY, WHITESPACE, compact, count, invertLiterate, key, last, locationDataToString, repeat, starts, throwSyntaxError, _ref, _ref1,
__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, i, tag, _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.heredocToken() || this.stringToken() || this.numberToken() || this.regexToken() || this.jsToken() || this.literalToken();
_ref2 = this.getLineAndColumnFromChunk(consumed), this.chunkLine = _ref2[0], this.chunkColumn = _ref2[1];
i += consumed;
}
this.closeIndentation();
if (tag = this.ends.pop()) {
this.error("missing " + tag);
}
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, tag, tagToken, _ref2, _ref3, _ref4;
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;
}
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);
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 match, octalEsc, string;
switch (this.chunk.charAt(0)) {
case "'":
if (!(match = SIMPLESTR.exec(this.chunk))) {
return 0;
}
string = match[0];
this.token('STRING', string.replace(MULTILINER, '\\\n'), 0, string.length);
break;
case '"':
if (!(string = this.balancedString(this.chunk, '"'))) {
return 0;
}
if (0 < string.indexOf('#{', 1)) {
this.interpolateString(string.slice(1, -1), {
strOffset: 1,
lexedLength: string.length
});
} else {
this.token('STRING', this.escapeLines(string, 0, string.length));
}
break;
default:
return 0;
}
if (octalEsc = /^(?:\\.|[^\\])*\\(?:0[0-7]|[1-7])/.test(string)) {
this.error("octal escape sequences " + string + " are not allowed");
}
return string.length;
};
Lexer.prototype.heredocToken = function() {
var doc, heredoc, match, quote;
if (!(match = HEREDOC.exec(this.chunk))) {
return 0;
}
heredoc = match[0];
quote = heredoc.charAt(0);
doc = this.sanitizeHeredoc(match[2], {
quote: quote,
indent: null
});
if (quote === '"' && 0 <= doc.indexOf('#{')) {
this.interpolateString(doc, {
heredoc: true,
strOffset: 3,
lexedLength: heredoc.length
});
} else {
this.token('STRING', this.makeString(doc, quote, true), 0, heredoc.length);
}
return heredoc.length;
};
Lexer.prototype.commentToken = function() {
var comment, here, match;
if (!(match = this.chunk.match(COMMENT))) {
return 0;
}
comment = match[0], here = match[1];
if (here) {
this.token('HERECOMMENT', this.sanitizeHeredoc(here, {
herecomment: true,
indent: repeat(' ', this.indent)
}), 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 flags, length, match, prev, regex, _ref2, _ref3;
if (this.chunk.charAt(0) !== '/') {
return 0;
}
if (match = HEREGEX.exec(this.chunk)) {
length = this.heregexToken(match);
return length;
}
prev = last(this.tokens);
if (prev && (_ref2 = prev[0], __indexOf.call((prev.spaced ? NOT_REGEX : NOT_SPACED_REGEX), _ref2) >= 0)) {
return 0;
}
if (!(match = REGEX.exec(this.chunk))) {
return 0;
}
_ref3 = match, match = _ref3[0], regex = _ref3[1], flags = _ref3[2];
if (regex.slice(0, 2) === '/*') {
this.error('regular expressions cannot begin with `*`');
}
if (regex === '//') {
regex = '/(?:)/';
}
this.token('REGEX', "" + regex + flags, 0, match.length);
return match.length;
};
Lexer.prototype.heregexToken = function(match) {
var body, flags, flagsOffset, heregex, plusToken, prev, re, tag, token, tokens, value, _i, _len, _ref2, _ref3, _ref4;
heregex = match[0], body = match[1], flags = match[2];
if (0 > body.indexOf('#{')) {
re = body.replace(HEREGEX_OMIT, '').replace(/\//g, '\\/');
if (re.match(/^\*/)) {
this.error('regular expressions cannot begin with `*`');
}
this.token('REGEX', "/" + (re || '(?:)') + "/" + flags, 0, heregex.length);
return heregex.length;
}
this.token('IDENTIFIER', 'RegExp', 0, 0);
this.token('CALL_START', '(', 0, 0);
tokens = [];
_ref2 = this.interpolateString(body, {
regex: true
});
for (_i = 0, _len = _ref2.length; _i < _len; _i++) {
token = _ref2[_i];
tag = token[0], value = token[1];
if (tag === 'TOKENS') {
tokens.push.apply(tokens, value);
} else if (tag === 'NEOSTRING') {
if (!(value = value.replace(HEREGEX_OMIT, ''))) {
continue;
}
value = value.replace(/\\/g, '\\\\');
token[0] = 'STRING';
token[1] = this.makeString(value, '"', true);
tokens.push(token);
} else {
this.error("Unexpected " + tag);
}
prev = last(this.tokens);
plusToken = ['+', '+'];
plusToken[2] = prev[2];
tokens.push(plusToken);
}
tokens.pop();
if (((_ref3 = tokens[0]) != null ? _ref3[0] : void 0) !== 'STRING') {
this.token('STRING', '""', 0, 0);
this.token('+', '+', 0, 0);
}
(_ref4 = this.tokens).push.apply(_ref4, tokens);
if (flags) {
flagsOffset = heregex.lastIndexOf(flags);
this.token(',', ',', flagsOffset, 0);
this.token('STRING', '"' + flags + '"', flagsOffset, flags.length);
}
this.token(')', ')', heregex.length - 1, 0);
return heregex.length;
};
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('OUTDENT');
this.outdebt = this.indebt = 0;
} else if (size < this.baseIndent) {
this.error('missing indentation', indent.length);
} else {
this.indebt = 0;
this.outdentToken(this.indent - size, noNewlines, indent.length);
}
this.indent = size;
return indent.length;
};
Lexer.prototype.outdentToken = function(moveOut, noNewlines, outdentLength) {
var dent, len;
while (moveOut > 0) {
len = this.indents.length - 1;
if (this.indents[len] === void 0) {
moveOut = 0;
} else if (this.indents[len] === this.outdebt) {
moveOut -= this.outdebt;
this.outdebt = 0;
} else if (this.indents[len] < this.outdebt) {
this.outdebt -= this.indents[len];
moveOut -= this.indents[len];
} else {
dent = this.indents.pop() + this.outdebt;
moveOut -= dent;
this.outdebt = 0;
this.pair('OUTDENT');
this.token('OUTDENT', dent, 0, outdentLength);
}
}
if (dent) {
this.outdebt -= moveOut;
}
while (this.value() === ';') {
this.tokens.pop();
}
if (!(this.tag() === 'TERMINATOR' || noNewlines)) {
this.token('TERMINATOR', '\n', outdentLength, 0);
}
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, tag, value, _ref2, _ref3, _ref4, _ref5;
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(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)) {
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';
}
}
}
switch (value) {
case '(':
case '{':
case '[':
this.ends.push(INVERSES[value]);
break;
case ')':
case '}':
case ']':
this.pair(value);
}
this.token(tag, value);
return value.length;
};
Lexer.prototype.sanitizeHeredoc = function(doc, options) {
var attempt, herecomment, indent, match, _ref2;
indent = options.indent, herecomment = options.herecomment;
if (herecomment) {
if (HEREDOC_ILLEGAL.test(doc)) {
this.error("block comment cannot contain \"*/\", starting");
}
if (doc.indexOf('\n') < 0) {
return doc;
}
} else {
while (match = HEREDOC_INDENT.exec(doc)) {
attempt = match[1];
if (indent === null || (0 < (_ref2 = attempt.length) && _ref2 < indent.length)) {
indent = attempt;
}
}
}
if (indent) {
doc = doc.replace(RegExp("\\n" + indent, "g"), '\n');
}
if (!herecomment) {
doc = doc.replace(/^\n/, '');
}
return doc;
};
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.balancedString = function(str, end) {
var continueCount, i, letter, match, prev, stack, _i, _ref2;
continueCount = 0;
stack = [end];
for (i = _i = 1, _ref2 = str.length; 1 <= _ref2 ? _i < _ref2 : _i > _ref2; i = 1 <= _ref2 ? ++_i : --_i) {
if (continueCount) {
--continueCount;
continue;
}
switch (letter = str.charAt(i)) {
case '\\':
++continueCount;
continue;
case end:
stack.pop();
if (!stack.length) {
return str.slice(0, +i + 1 || 9e9);
}
end = stack[stack.length - 1];
continue;
}
if (end === '}' && (letter === '"' || letter === "'")) {
stack.push(end = letter);
} else if (end === '}' && letter === '/' && (match = HEREGEX.exec(str.slice(i)) || REGEX.exec(str.slice(i)))) {
continueCount += match[0].length - 1;
} else if (end === '}' && letter === '{') {
stack.push(end = '}');
} else if (end === '"' && prev === '#' && letter === '{') {
stack.push(end = '}');
}
prev = letter;
}
return this.error("missing " + (stack.pop()) + ", starting");
};
Lexer.prototype.interpolateString = function(str, options) {
var column, expr, heredoc, i, inner, interpolated, len, letter, lexedLength, line, locationToken, nested, offsetInChunk, pi, plusToken, popped, regex, rparen, strOffset, tag, token, tokens, value, _i, _len, _ref2, _ref3, _ref4;
if (options == null) {
options = {};
}
heredoc = options.heredoc, regex = options.regex, offsetInChunk = options.offsetInChunk, strOffset = options.strOffset, lexedLength = options.lexedLength;
offsetInChunk = offsetInChunk || 0;
strOffset = strOffset || 0;
lexedLength = lexedLength || str.length;
if (heredoc && str.length > 0 && str[0] === '\n') {
str = str.slice(1);
strOffset++;
}
tokens = [];
pi = 0;
i = -1;
while (letter = str.charAt(i += 1)) {
if (letter === '\\') {
i += 1;
continue;
}
if (!(letter === '#' && str.charAt(i + 1) === '{' && (expr = this.balancedString(str.slice(i + 1), '}')))) {
continue;
}
if (pi < i) {
tokens.push(this.makeToken('NEOSTRING', str.slice(pi, i), strOffset + pi));
}
inner = expr.slice(1, -1);
if (inner.length) {
_ref2 = this.getLineAndColumnFromChunk(strOffset + i + 1), line = _ref2[0], column = _ref2[1];
nested = new Lexer().tokenize(inner, {
line: line,
column: column,
rewrite: false
});
popped = nested.pop();
if (((_ref3 = nested[0]) != null ? _ref3[0] : void 0) === 'TERMINATOR') {
popped = nested.shift();
}
if (len = nested.length) {
if (len > 1) {
nested.unshift(this.makeToken('(', '(', strOffset + i + 1, 0));
nested.push(this.makeToken(')', ')', strOffset + i + 1 + inner.length, 0));
}
tokens.push(['TOKENS', nested]);
}
}
i += expr.length;
pi = i + 1;
}
if ((i > pi && pi < str.length)) {
tokens.push(this.makeToken('NEOSTRING', str.slice(pi), strOffset + pi));
}
if (regex) {
return tokens;
}
if (!tokens.length) {
return this.token('STRING', '""', offsetInChunk, lexedLength);
}
if (tokens[0][0] !== 'NEOSTRING') {
tokens.unshift(this.makeToken('NEOSTRING', '', offsetInChunk));
}
if (interpolated = tokens.length > 1) {
this.token('(', '(', offsetInChunk, 0);
}
for (i = _i = 0, _len = tokens.length; _i < _len; i = ++_i) {
token = tokens[i];
tag = token[0], value = token[1];
if (i) {
if (i) {
plusToken = this.token('+', '+');
}
locationToken = tag === 'TOKENS' ? value[0] : 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
};
}
if (tag === 'TOKENS') {
(_ref4 = this.tokens).push.apply(_ref4, value);
} else if (tag === 'NEOSTRING') {
token[0] = 'STRING';
token[1] = this.makeString(value, '"', heredoc);
this.tokens.push(token);
} else {
this.error("Unexpected " + tag);
}
}
if (interpolated) {
rparen = this.makeToken(')', ')', offsetInChunk + lexedLength, 0);
rparen.stringEnd = true;
this.tokens.push(rparen);
}
return tokens;
};
Lexer.prototype.pair = function(tag) {
var size, wanted;
if (tag !== (wanted = last(this.ends))) {
if ('OUTDENT' !== wanted) {
this.error("unmatched " + tag);
}
this.indent -= size = last(this.indents);
this.outdentToken(size, 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, token, _ref2, _ref3;
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) {
var token;
token = this.makeToken(tag, value, offsetInChunk, length);
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 === '+' || _ref2 === '-' || _ref2 === 'SHIFT' || _ref2 === 'RELATION' || _ref2 === 'COMPARE' || _ref2 === 'LOGIC' || _ref2 === 'THROW' || _ref2 === 'EXTENDS');
};
Lexer.prototype.escapeLines = function(str, heredoc) {
return str.replace(MULTILINER, heredoc ? '\\n' : '');
};
Lexer.prototype.makeString = function(body, quote, heredoc) {
if (!body) {
return quote + quote;
}
body = body.replace(/\\([\s\S])/g, function(match, contents) {
if (contents === '\n' || contents === quote) {
return contents;
} else {
return match;
}
});
body = body.replace(RegExp("" + quote, "g"), '\\$&');
return quote + this.escapeLines(body, heredoc) + 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', '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', '__hasProp', '__extends', '__slice', '__bind', '__indexOf', 'implements', 'interface', 'package', 'private', 'protected', 'public', 'static', 'yield'];
STRICT_PROSCRIBED = ['arguments', 'eval'];
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 = /^([$A-Za-z_\x7f-\uffff][$\w\x7f-\uffff]*)([^\n\S]*:(?!:))?/;
NUMBER = /^0b[01]+|^0o[0-7]+|^0x[\da-f]+|^\d*\.?\d+(?:e[+-]?\d+)?/i;
HEREDOC = /^("""|''')([\s\S]*?)(?:\n[^\n\S]*)?\1/;
OPERATOR = /^(?:[-=]>|[-+*\/%<>&|^!?=]=|>>>=?|([-+:])\1|([&|<>])\2=?|\?(\.|::)|\.{2,3})/;
WHITESPACE = /^[^\n\S]+/;
COMMENT = /^###([^#][\s\S]*?)(?:###[^\n\S]*|(?:###)$)|^(?:\s*#(?!##[^#]).*)+/;
CODE = /^[-=]>/;
MULTI_DENT = /^(?:\n[^\n\S]*)+/;
SIMPLESTR = /^'[^\\']*(?:\\.[^\\']*)*'/;
JSTOKEN = /^`[^\\`]*(?:\\.[^\\`]*)*`/;
REGEX = /^(\/(?![\s=])[^[\/\n\\]*(?:(?:\\[\s\S]|\[[^\]\n\\]*(?:\\[\s\S][^\]\n\\]*)*])[^[\/\n\\]*)*\/)([imgy]{0,4})(?!\w)/;
HEREGEX = /^\/{3}([\s\S]+?)\/{3}([imgy]{0,4})(?!\w)/;
HEREGEX_OMIT = /\s+(?:#.*)?/g;
MULTILINER = /\n/g;
HEREDOC_INDENT = /\n+([^\n\S]*)/g;
HEREDOC_ILLEGAL = /\*\//;
LINE_CONTINUER = /^\s*(?:,|\??\.(?![.\d])|::)/;
TRAILING_SPACES = /\s+$/;
COMPOUND_ASSIGN = ['-=', '+=', '/=', '*=', '%=', '||=', '&&=', '?=', '<<=', '>>=', '>>>=', '&=', '^=', '|='];
UNARY = ['!', '~', 'NEW', 'TYPEOF', 'DELETE', 'DO'];
LOGIC = ['&&', '||', '&', '|', '^'];
SHIFT = ['<<', '>>', '>>>'];
COMPARE = ['==', '!=', '<', '>', '<=', '>='];
MATH = ['*', '/', '%'];
RELATION = ['IN', 'OF', 'INSTANCEOF'];
BOOL = ['TRUE', 'FALSE'];
NOT_REGEX = ['NUMBER', 'REGEX', 'BOOL', 'NULL', 'UNDEFINED', '++', '--'];
NOT_SPACED_REGEX = NOT_REGEX.concat(')', '}', 'THIS', 'IDENTIFIER', 'STRING', ']');
CALLABLE = ['IDENTIFIER', 'STRING', 'REGEX', ')', ']', '}', '?', '::', '@', 'THIS', 'SUPER'];
INDEXABLE = CALLABLE.concat('NUMBER', 'BOOL', 'NULL', 'UNDEFINED');
LINE_BREAK = ['INDENT', 'OUTDENT', 'TERMINATOR'];
});
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