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lexer.js
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// Generated by CoffeeScript 2.0.0-alpha
(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, HERE_JSTOKEN, IDENTIFIER, INDENTABLE_CLOSERS, INDEXABLE, INVALID_ESCAPE, INVERSES, JSTOKEN, JS_KEYWORDS, LEADING_BLANK_LINE, LINE_BREAK, LINE_CONTINUER, Lexer, MATH, MULTI_DENT, NOT_REGEX, NUMBER, OPERATOR, POSSIBLY_DIVISION, REGEX, REGEX_FLAGS, REGEX_ILLEGAL, RELATION, RESERVED, Rewriter, SHIFT, SIMPLE_STRING_OMIT, STRICT_PROSCRIBED, STRING_DOUBLE, STRING_OMIT, STRING_SINGLE, STRING_START, TRAILING_BLANK_LINE, TRAILING_SPACES, UNARY, UNARY_MATH, VALID_FLAGS, WHITESPACE, compact, count, invertLiterate, isForFrom, isUnassignable, key, 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, 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;
this.literate = opts.literate;
this.indent = 0;
this.baseIndent = 0;
this.indebt = 0;
this.outdebt = 0;
this.indents = [];
this.indentLiteral = '';
this.ends = [];
this.tokens = [];
this.seenFor = false;
this.seenImport = false;
this.seenExport = false;
this.exportSpecifierList = false;
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()) {
this.error(`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 alias, colon, colonOffset, id, idLength, input, match, poppedToken, prev, ref2, ref3, ref4, ref5, ref6, ref7, 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;
}
if (id === 'as' && this.seenImport) {
if (this.value() === '*') {
this.tokens[this.tokens.length - 1][0] = 'IMPORT_ALL';
} else if (ref2 = this.value(), indexOf.call(COFFEE_KEYWORDS, ref2) >= 0) {
this.tokens[this.tokens.length - 1][0] = 'IDENTIFIER';
}
if ((ref3 = this.tag()) === 'DEFAULT' || ref3 === 'IMPORT_ALL' || ref3 === 'IDENTIFIER') {
this.token('AS', id);
return id.length;
}
}
if (id === 'as' && this.seenExport && this.tag() === 'IDENTIFIER') {
this.token('AS', id);
return id.length;
}
if (id === 'default' && this.seenExport) {
this.token('DEFAULT', id);
return id.length;
}
ref4 = this.tokens, prev = ref4[ref4.length - 1];
tag = colon || (prev != null) && (((ref5 = prev[0]) === '.' || ref5 === '?.' || ref5 === '::' || ref5 === '?::') || !prev.spaced && prev[0] === '@') ? 'PROPERTY' : 'IDENTIFIER';
if (tag === 'IDENTIFIER' && (indexOf.call(JS_KEYWORDS, id) >= 0 || indexOf.call(COFFEE_KEYWORDS, id) >= 0) && !(this.exportSpecifierList && indexOf.call(COFFEE_KEYWORDS, id) >= 0)) {
tag = id.toUpperCase();
if (tag === 'WHEN' && (ref6 = this.tag(), indexOf.call(LINE_BREAK, ref6) >= 0)) {
tag = 'LEADING_WHEN';
} else if (tag === 'FOR') {
this.seenFor = true;
} else if (tag === 'UNLESS') {
tag = 'IF';
} else if (tag === 'IMPORT') {
this.seenImport = true;
} else if (tag === 'EXPORT') {
this.seenExport = true;
} 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;
}
}
}
} else if (tag === 'IDENTIFIER' && this.seenFor && id === 'from' && isForFrom(prev)) {
tag = 'FORFROM';
this.seenFor = false;
}
if (tag === 'IDENTIFIER' && indexOf.call(RESERVED, id) >= 0) {
this.error(`reserved word '${id}'`, {
length: id.length
});
}
if (tag !== 'PROPERTY') {
if (indexOf.call(COFFEE_ALIASES, id) >= 0) {
alias = id;
id = COFFEE_ALIAS_MAP[id];
}
tag = (function() {
switch (id) {
case '!':
return 'UNARY';
case '==':
case '!=':
return 'COMPARE';
case 'true':
case 'false':
return 'BOOL';
case 'break':
case 'continue':
case 'debugger':
return 'STATEMENT';
case '&&':
case '||':
return id;
default:
return tag;
}
})();
}
tagToken = this.token(tag, id, 0, idLength);
if (alias) {
tagToken.origin = [tag, alias, tagToken[2]];
}
if (poppedToken) {
ref7 = [poppedToken[2].first_line, poppedToken[2].first_column], tagToken[2].first_line = ref7[0], tagToken[2].first_column = ref7[1];
}
if (colon) {
colonOffset = input.lastIndexOf(':');
this.token(':', ':', colonOffset, colon.length);
}
return input.length;
};
Lexer.prototype.numberToken = function() {
var base, lexedLength, match, number, numberValue, tag;
if (!(match = NUMBER.exec(this.chunk))) {
return 0;
}
number = match[0];
lexedLength = number.length;
switch (false) {
case !/^0[BOX]/.test(number):
this.error(`radix prefix in '${number}' must be lowercase`, {
offset: 1
});
break;
case !/^(?!0x).*E/.test(number):
this.error(`exponential notation in '${number}' must be indicated with a lowercase 'e'`, {
offset: number.indexOf('E')
});
break;
case !/^0\d*[89]/.test(number):
this.error(`decimal literal '${number}' must not be prefixed with '0'`, {
length: lexedLength
});
break;
case !/^0\d+/.test(number):
this.error(`octal literal '${number}' must be prefixed with '0o'`, {
length: lexedLength
});
}
base = (function() {
switch (number.charAt(1)) {
case 'b':
return 2;
case 'o':
return 8;
case 'x':
return 16;
default:
return null;
}
})();
numberValue = base != null ? parseInt(number.slice(2), base) : parseFloat(number);
tag = numberValue === 2e308 ? 'INFINITY' : 'NUMBER';
this.token(tag, number, 0, lexedLength);
return lexedLength;
};
Lexer.prototype.stringToken = function() {
var $, attempt, delimiter, doc, end, heredoc, i, indent, indentRegex, match, quote, ref2, ref3, regex, token, tokens;
quote = (STRING_START.exec(this.chunk) || [])[0];
if (!quote) {
return 0;
}
if (this.tokens.length && this.value() === 'from' && (this.seenImport || this.seenExport)) {
this.tokens[this.tokens.length - 1][0] = 'FROM';
}
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;
delimiter = quote.charAt(0);
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(`\\n${indent}`, "g");
}
this.mergeInterpolationTokens(tokens, {
delimiter: delimiter
}, (value, i) => {
value = this.formatString(value);
if (indentRegex) {
value = value.replace(indentRegex, '\n');
}
if (i === 0) {
value = value.replace(LEADING_BLANK_LINE, '');
}
if (i === $) {
value = value.replace(TRAILING_BLANK_LINE, '');
}
return value;
});
} else {
this.mergeInterpolationTokens(tokens, {
delimiter: delimiter
}, (value, i) => {
value = this.formatString(value);
value = value.replace(SIMPLE_STRING_OMIT, function(match, offset) {
if ((i === 0 && offset === 0) || (i === $ && offset + match.length === value.length)) {
return '';
} else {
return ' ';
}
});
return value;
});
}
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 ${match[0]}`, {
offset: match.index,
length: match[0].length
});
}
if (here.indexOf('\n') >= 0) {
here = here.replace(RegExp(`\\n${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 = HERE_JSTOKEN.exec(this.chunk) || JSTOKEN.exec(this.chunk)))) {
return 0;
}
script = match[1].replace(/\\+(`|$)/g, function(string) {
return string.slice(-Math.ceil(string.length / 2));
});
this.token('JS', script, 0, match[0].length);
return match[0].length;
};
Lexer.prototype.regexToken = function() {
var body, closed, end, flags, index, match, origin, prev, ref2, ref3, ref4, regex, tokens;
switch (false) {
case !(match = REGEX_ILLEGAL.exec(this.chunk)):
this.error(`regular expressions cannot begin with ${match[2]}`, {
offset: 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], body = match[1], closed = match[2];
this.validateEscapes(body, {
isRegex: true,
offsetInChunk: 1
});
index = regex.length;
ref2 = this.tokens, prev = ref2[ref2.length - 1];
if (prev) {
if (prev.spaced && (ref3 = prev[0], indexOf.call(CALLABLE, ref3) >= 0)) {
if (!closed || POSSIBLY_DIVISION.test(regex)) {
return 0;
}
} else if (ref4 = prev[0], indexOf.call(NOT_REGEX, ref4) >= 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;
origin = this.makeToken('REGEX', null, 0, end);
switch (false) {
case !!VALID_FLAGS.test(flags):
this.error(`invalid regular expression flags ${flags}`, {
offset: index,
length: flags.length
});
break;
case !(regex || tokens.length === 1):
if (body == null) {
body = this.formatHeregex(tokens[0][1]);
}
this.token('REGEX', `${this.makeDelimitedLiteral(body, {
delimiter: '/'
})}${flags}`, 0, end, origin);
break;
default:
this.token('REGEX_START', '(', 0, 0, origin);
this.token('IDENTIFIER', 'RegExp', 0, 0);
this.token('CALL_START', '(', 0, 0);
this.mergeInterpolationTokens(tokens, {
delimiter: '"',
double: true
}, this.formatHeregex);
if (flags) {
this.token(',', ',', index, 0);
this.token('STRING', '"' + flags + '"', index, flags.length);
}
this.token(')', ')', end, 0);
this.token('REGEX_END', ')', end, 0);
}
return end;
};
Lexer.prototype.lineToken = function() {
var diff, indent, match, minLiteralLength, newIndentLiteral, noNewlines, size;
if (!(match = MULTI_DENT.exec(this.chunk))) {
return 0;
}
indent = match[0];
this.seenFor = false;
size = indent.length - 1 - indent.lastIndexOf('\n');
noNewlines = this.unfinished();
newIndentLiteral = size > 0 ? indent.slice(-size) : '';
if (!/^(.?)\1*$/.exec(newIndentLiteral)) {
this.error('mixed indentation', {
offset: indent.length
});
return indent.length;
}
minLiteralLength = Math.min(newIndentLiteral.length, this.indentLiteral.length);
if (newIndentLiteral.slice(0, minLiteralLength) !== this.indentLiteral.slice(0, minLiteralLength)) {
this.error('indentation mismatch', {
offset: indent.length
});
return indent.length;
}
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;
this.indentLiteral = newIndentLiteral;
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;
this.indentLiteral = newIndentLiteral;
} else if (size < this.baseIndent) {
this.error('missing indentation', {
offset: 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;
this.indentLiteral = this.indentLiteral.slice(0, decreasedIndent);
return this;
};
Lexer.prototype.whitespaceToken = function() {
var match, nline, prev, ref2;
if (!((match = WHITESPACE.exec(this.chunk)) || (nline = this.chunk.charAt(0) === '\n'))) {
return 0;
}
ref2 = this.tokens, prev = ref2[ref2.length - 1];
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, message, origin, prev, ref2, ref3, ref4, ref5, ref6, skipToken, 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;
ref2 = this.tokens, prev = ref2[ref2.length - 1];
if (prev && indexOf.call(['=', ...COMPOUND_ASSIGN], value) >= 0) {
skipToken = false;
if (value === '=' && ((ref3 = prev[1]) === '||' || ref3 === '&&') && !prev.spaced) {
prev[0] = 'COMPOUND_ASSIGN';
prev[1] += '=';
prev = this.tokens[this.tokens.length - 2];
skipToken = true;
}
if (prev && prev[0] !== 'PROPERTY') {
origin = (ref4 = prev.origin) != null ? ref4 : prev;
message = isUnassignable(prev[1], origin[1]);
if (message) {
this.error(message, origin[2]);
}
}
if (skipToken) {
return value.length;
}
}
if (value === '{' && (prev != null ? prev[0] : void 0) === 'EXPORT') {
this.exportSpecifierList = true;
} else if (this.exportSpecifierList && value === '}') {
this.exportSpecifierList = false;
}
if (value === ';') {
this.seenFor = this.seenImport = this.seenExport = false;
tag = 'TERMINATOR';
} else if (value === '*' && prev[0] === 'EXPORT') {
tag = 'EXPORT_ALL';
} 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 (value === '?' && (prev != null ? prev.spaced : void 0)) {
tag = 'BIN?';
} else if (prev && !prev.spaced) {
if (value === '(' && (ref5 = prev[0], indexOf.call(CALLABLE, ref5) >= 0)) {
if (prev[0] === '?') {
prev[0] = 'FUNC_EXIST';
}
tag = 'CALL_START';
} else if (value === '[' && (ref6 = prev[0], indexOf.call(INDEXABLE, ref6) >= 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];
this.validateEscapes(strPart, {
isRegex: delimiter.charAt(0) === '/',
offsetInChunk: offsetInChunk
});
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}`, {
length: delimiter.length
});
}
firstToken = tokens[0], lastToken = tokens[tokens.length - 1];
firstToken[2].first_column -= delimiter.length;
if (lastToken[1].substr(-1) === '\n') {
lastToken[2].last_line += 1;
lastToken[2].last_column = delimiter.length - 1;
} else {
lastToken[2].last_column += delimiter.length;
}
if (lastToken[1].length === 0) {
lastToken[2].last_column -= 1;
}
return {
tokens: tokens,
index: offsetInChunk + delimiter.length
};
};
Lexer.prototype.mergeInterpolationTokens = function(tokens, options, fn) {
var converted, firstEmptyStringIndex, firstIndex, i, j, lastToken, len, locationToken, lparen, plusToken, rparen, tag, token, tokensToPush, value;
if (tokens.length > 1) {
lparen = this.token('STRING_START', '(', 0, 0);
}
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.makeDelimitedLiteral(converted, options);
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
};
}
this.tokens.push(...tokensToPush);
}
if (lparen) {
lastToken = tokens[tokens.length - 1];
lparen.origin = [
'STRING', null, {
first_line: lparen[2].first_line,
first_column: lparen[2].first_column,
last_line: lastToken[2].last_line,
last_column: lastToken[2].last_column
}
];
rparen = this.token('STRING_END', ')');
return rparen[2] = {
first_line: lastToken[2].last_line,
first_column: lastToken[2].last_column,
last_line: lastToken[2].last_line,
last_column: lastToken[2].last_column
};
}
};
Lexer.prototype.pair = function(tag) {
var lastIndent, prev, ref2, ref3, wanted;
ref2 = this.ends, prev = ref2[ref2.length - 1];
if (tag !== (wanted = prev != null ? prev.tag : void 0)) {
if ('OUTDENT' !== wanted) {
this.error(`unmatched ${tag}`);
}
ref3 = this.indents, lastIndent = ref3[ref3.length - 1];
this.outdentToken(lastIndent, true);
return this.pair(tag);
}
return this.ends.pop();
};
Lexer.prototype.getLineAndColumnFromChunk = function(offset) {
var column, lastLine, lineCount, ref2, 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) {
ref2 = string.split('\n'), lastLine = ref2[ref2.length - 1];
column = lastLine.length;
} else {
column += string.length;
}
return [this.chunkLine + lineCount, column];
};
Lexer.prototype.makeToken = function(tag, value, offsetInChunk = 0, length = value.length) {
var lastCharacter, locationData, ref2, ref3, token;
locationData = {};
ref2 = this.getLineAndColumnFromChunk(offsetInChunk), locationData.first_line = ref2[0], locationData.first_column = ref2[1];
lastCharacter = length > 0 ? length - 1 : 0;
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() {
var ref2, token;
ref2 = this.tokens, token = ref2[ref2.length - 1];
return token != null ? token[0] : void 0;
};
Lexer.prototype.value = function() {
var ref2, token;
ref2 = this.tokens, token = ref2[ref2.length - 1];
return token != null ? token[1] : void 0;
};
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 === '**' || ref2 === 'SHIFT' || ref2 === 'RELATION' || ref2 === 'COMPARE' || ref2 === '&' || ref2 === '^' || ref2 === '|' || ref2 === '&&' || ref2 === '||' || ref2 === 'BIN?' || ref2 === 'THROW' || ref2 === 'EXTENDS');
};
Lexer.prototype.formatString = function(str) {
return str.replace(STRING_OMIT, '$1');
};
Lexer.prototype.formatHeregex = function(str) {
return str.replace(HEREGEX_OMIT, '$1$2');
};
Lexer.prototype.validateEscapes = function(str, options = {}) {
var before, hex, invalidEscape, match, message, octal, ref2, unicode;
match = INVALID_ESCAPE.exec(str);
if (!match) {
return;
}
match[0], before = match[1], octal = match[2], hex = match[3], unicode = match[4];
if (options.isRegex && octal && octal.charAt(0) !== '0') {
return;
}
message = octal ? "octal escape sequences are not allowed" : "invalid escape sequence";
invalidEscape = `\\${octal || hex || unicode}`;
return this.error(`${message} ${invalidEscape}`, {
offset: ((ref2 = options.offsetInChunk) != null ? ref2 : 0) + match.index + before.length,
length: invalidEscape.length
});
};
Lexer.prototype.makeDelimitedLiteral = function(body, options = {}) {
var regex;
if (body === '' && options.delimiter === '/') {
body = '(?:)';
}
regex = RegExp(`(\\\\\\\\)|(\\\\0(?=[1-7]))|\\\\?(${options.delimiter})|\\\\?(?:(\\n)|(\\r)|(\\u2028)|(\\u2029))|(\\\\.)`, "g");
body = body.replace(regex, function(match, backslash, nul, delimiter, lf, cr, ls, ps, other) {
switch (false) {
case !backslash:
if (options.double) {
return backslash + backslash;
} else {
return backslash;
}
case !nul:
return '\\x00';
case !delimiter:
return `\\${delimiter}`;
case !lf:
return '\\n';
case !cr:
return '\\r';
case !ls:
return '\\u2028';
case !ps:
return '\\u2029';
case !other:
if (options.double) {
return `\\${other}`;
} else {
return other;
}
}
});
return `${options.delimiter}${body}${options.delimiter}`;
};
Lexer.prototype.error = function(message, options = {}) {
var first_column, first_line, location, ref2, ref3, ref4;
location = 'first_line' in options ? options : ((ref3 = this.getLineAndColumnFromChunk((ref2 = options.offset) != null ? ref2 : 0), first_line = ref3[0], first_column = ref3[1], ref3), {
first_line: first_line,
first_column: first_column,
last_column: first_column + ((ref4 = options.length) != null ? ref4 : 1) - 1
});
return throwSyntaxError(message, location);
};
return Lexer;
})();
isUnassignable = function(name, displayName = name) {
switch (false) {
case indexOf.call([...JS_KEYWORDS, ...COFFEE_KEYWORDS], name) < 0:
return `keyword '${displayName}' can't be assigned`;
case indexOf.call(STRICT_PROSCRIBED, name) < 0:
return `'${displayName}' can't be assigned`;
case indexOf.call(RESERVED, name) < 0:
return `reserved word '${displayName}' can't be assigned`;
default:
return false;
}
};
exports.isUnassignable = isUnassignable;
isForFrom = function(prev) {
var ref2;
if (prev[0] === 'IDENTIFIER') {
if (prev[1] === 'from') {
prev[1][0] = 'IDENTIFIER';
true;
}
return true;
} else if (prev[0] === 'FOR') {
return false;
} else if ((ref2 = prev[1]) === '{' || ref2 === '[' || ref2 === ',' || ref2 === ':') {
return false;
} else {
return true;
}
};
JS_KEYWORDS = ['true', 'false', 'null', 'this', 'new', 'delete', 'typeof', 'in', 'instanceof', 'return', 'throw', 'break', 'continue', 'debugger', 'yield', 'await', 'if', 'else', 'switch', 'for', 'while', 'do', 'try', 'catch', 'finally', 'class', 'extends', 'super', 'import', 'export', 'default'];
COFFEE_KEYWORDS = ['undefined', 'Infinity', 'NaN', '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', 'function', 'var', 'void', 'with', 'const', 'let', 'enum', 'native', 'implements', 'interface', 'package', 'private', 'protected', 'public', 'static'];