12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012112212312412512612712812913013113213313413513613713813914014114214314414514614714814915015115215315415515615715815916016116216316416516616716816917017117217317417517617717817918018118218318418518618718818919019119219319419519619719819920020120220320420520620720820921021121221321421521621721821922022122222322422522622722822923023123223323423523623723823924024124224324424524624724824925025125225325425525625725825926026126226326426526626726826927027127227327427527627727827928028128228328428528628728828929029129229329429529629729829930030130230330430530630730830931031131231331431531631731831932032132232332432532632732832933033133233333433533633733833934034134234334434534634734834935035135235335435535635735835936036136236336436536636736836937037137237337437537637737837938038138238338438538638738838939039139239339439539639739839940040140240340440540640740840941041141241341441541641741841942042142242342442542642742842943043143243343443543643743843944044144244344444544644744844945045145245345445545645745845946046146246346446546646746846947047147247347447547647747847948048148248348448548648748848949049149249349449549649749849950050150250350450550650750850951051151251351451551651751851952052152252352452552652752852953053153253353453553653753853954054154254354454554654754854955055155255355455555655755855956056156256356456556656756856957057157257357457557657757857958058158258358458558658758858959059159259359459559659759859960060160260360460560660760860961061161261361461561661761861962062162262362462562662762862963063163263363463563663763863964064164264364464564664764864965065165265365465565665765865966066166266366466566666766866967067167267367467567667767867968068168268368468568668768868969069169269369469569669769869970070170270370470570670770870971071171271371471571671771871972072172272372472572672772872973073173273373473573673773873974074174274374474574674774874975075175275375475575675775875976076176276376476576676776876977077177277377477577677777877978078178278378478578678778878979079179279379479579679779879980080180280380480580680780880981081181281381481581681781881982082182282382482582682782882983083183283383483583683783883984084184284384484584684784884985085185285385485585685785885986086186286386486586686786886987087187287387487587687787887988088188288388488588688788888989089189289389489589689789889990090190290390490590690790890991091191291391491591691791891992092192292392492592692792892993093193293393493593693793893994094194294394494594694794894995095195295395495595695795895996096196296396496596696796896997097197297397497597697797897998098198298398498598698798898999099199299399499599699799899910001001100210031004100510061007100810091010101110121013101410151016101710181019102010211022102310241025102610271028102910301031103210331034103510361037103810391040104110421043104410451046104710481049105010511052105310541055105610571058105910601061106210631064106510661067106810691070107110721073107410751076107710781079108010811082108310841085108610871088108910901091109210931094109510961097109810991100110111021103110411051106110711081109111011111112111311141115111611171118111911201121112211231124112511261127112811291130113111321133113411351136113711381139114011411142114311441145114611471148114911501151115211531154115511561157115811591160116111621163116411651166116711681169117011711172117311741175117611771178117911801181118211831184118511861187118811891190119111921193119411951196119711981199120012011202120312041205120612071208120912101211121212131214121512161217121812191220122112221223122412251226122712281229123012311232123312341235123612371238123912401241124212431244124512461247124812491250125112521253125412551256125712581259126012611262126312641265126612671268126912701271127212731274127512761277127812791280128112821283128412851286128712881289129012911292129312941295129612971298129913001301130213031304130513061307130813091310131113121313131413151316131713181319132013211322132313241325132613271328132913301331133213331334133513361337133813391340134113421343134413451346134713481349135013511352135313541355135613571358135913601361136213631364136513661367136813691370137113721373137413751376137713781379138013811382138313841385138613871388138913901391139213931394139513961397139813991400140114021403140414051406140714081409141014111412141314141415141614171418141914201421142214231424142514261427142814291430143114321433143414351436143714381439144014411442144314441445144614471448144914501451145214531454145514561457145814591460146114621463146414651466146714681469147014711472147314741475147614771478147914801481148214831484148514861487148814891490149114921493149414951496149714981499150015011502150315041505150615071508150915101511151215131514151515161517151815191520 |
- 'use strict';
- var assert = require('assert');
- var isExpression = require('is-expression');
- var characterParser = require('character-parser');
- var error = require('pug-error');
- module.exports = lex;
- module.exports.Lexer = Lexer;
- function lex(str, options) {
- var lexer = new Lexer(str, options);
- return JSON.parse(JSON.stringify(lexer.getTokens()));
- }
- function Lexer(str, options) {
- options = options || {};
- if (typeof str !== 'string') {
- throw new Error('Expected source code to be a string but got "' + (typeof str) + '"')
- }
- if (typeof options !== 'object') {
- throw new Error('Expected "options" to be an object but got "' + (typeof options) + '"')
- }
-
- str = str.replace(/^\uFEFF/, '');
- this.input = str.replace(/\r\n|\r/g, '\n');
- this.originalInput = this.input;
- this.filename = options.filename;
- this.interpolated = options.interpolated || false;
- this.lineno = options.startingLine || 1;
- this.colno = options.startingColumn || 1;
- this.plugins = options.plugins || [];
- this.indentStack = [0];
- this.indentRe = null;
-
- this.interpolationAllowed = true;
- this.whitespaceRe = /[ \n\t]/;
- this.tokens = [];
- this.ended = false;
- };
- Lexer.prototype = {
- constructor: Lexer,
- error: function (code, message) {
- var err = error(code, message, {line: this.lineno, column: this.colno, filename: this.filename, src: this.originalInput});
- throw err;
- },
- assert: function (value, message) {
- if (!value) this.error('ASSERT_FAILED', message);
- },
- isExpression: function (exp) {
- return isExpression(exp, {
- throw: true
- });
- },
- assertExpression: function (exp, noThrow) {
-
- try {
- this.callLexerFunction('isExpression', exp);
- return true;
- } catch (ex) {
- if (noThrow) return false;
-
- if (!ex.loc) throw ex;
- this.incrementLine(ex.loc.line - 1);
- this.incrementColumn(ex.loc.column);
- var msg = 'Syntax Error: ' + ex.message.replace(/ \([0-9]+:[0-9]+\)$/, '');
- this.error('SYNTAX_ERROR', msg);
- }
- },
- assertNestingCorrect: function (exp) {
-
-
- var res = characterParser(exp)
- if (res.isNesting()) {
- this.error('INCORRECT_NESTING', 'Nesting must match on expression `' + exp + '`')
- }
- },
-
- tok: function(type, val){
- var res = {
- type: type,
- loc: {
- start: {
- line: this.lineno,
- column: this.colno
- },
- filename: this.filename
- }
- };
- if (val !== undefined) res.val = val;
- return res;
- },
-
-
-
- tokEnd: function(tok){
- tok.loc.end = {
- line: this.lineno,
- column: this.colno
- };
- return tok;
- },
-
- incrementLine: function(increment){
- this.lineno += increment;
- if (increment) this.colno = 1;
- },
-
- incrementColumn: function(increment){
- this.colno += increment
- },
-
- consume: function(len){
- this.input = this.input.substr(len);
- },
-
- scan: function(regexp, type){
- var captures;
- if (captures = regexp.exec(this.input)) {
- var len = captures[0].length;
- var val = captures[1];
- var diff = len - (val ? val.length : 0);
- var tok = this.tok(type, val);
- this.consume(len);
- this.incrementColumn(diff);
- return tok;
- }
- },
- scanEndOfLine: function (regexp, type) {
- var captures;
- if (captures = regexp.exec(this.input)) {
- var whitespaceLength = 0;
- var whitespace;
- var tok;
- if (whitespace = /^([ ]+)([^ ]*)/.exec(captures[0])) {
- whitespaceLength = whitespace[1].length;
- this.incrementColumn(whitespaceLength);
- }
- var newInput = this.input.substr(captures[0].length);
- if (newInput[0] === ':') {
- this.input = newInput;
- tok = this.tok(type, captures[1]);
- this.incrementColumn(captures[0].length - whitespaceLength);
- return tok;
- }
- if (/^[ \t]*(\n|$)/.test(newInput)) {
- this.input = newInput.substr(/^[ \t]*/.exec(newInput)[0].length);
- tok = this.tok(type, captures[1]);
- this.incrementColumn(captures[0].length - whitespaceLength);
- return tok;
- }
- }
- },
-
- bracketExpression: function(skip){
- skip = skip || 0;
- var start = this.input[skip];
- assert(start === '(' || start === '{' || start === '[',
- 'The start character should be "(", "{" or "["');
- var end = characterParser.BRACKETS[start];
- var range;
- try {
- range = characterParser.parseUntil(this.input, end, {start: skip + 1});
- } catch (ex) {
- if (ex.index !== undefined) {
- var idx = ex.index;
-
- var tmp = this.input.substr(skip).indexOf('\n');
-
- var nextNewline = tmp + skip;
- var ptr = 0;
- while (idx > nextNewline && tmp !== -1) {
- this.incrementLine(1);
- idx -= nextNewline + 1;
- ptr += nextNewline + 1;
- tmp = nextNewline = this.input.substr(ptr).indexOf('\n');
- };
- this.incrementColumn(idx);
- }
- if (ex.code === 'CHARACTER_PARSER:END_OF_STRING_REACHED') {
- this.error('NO_END_BRACKET', 'The end of the string reached with no closing bracket ' + end + ' found.');
- } else if (ex.code === 'CHARACTER_PARSER:MISMATCHED_BRACKET') {
- this.error('BRACKET_MISMATCH', ex.message);
- }
- throw ex;
- }
- return range;
- },
- scanIndentation: function() {
- var captures, re;
-
- if (this.indentRe) {
- captures = this.indentRe.exec(this.input);
-
- } else {
-
- re = /^\n(\t*) */;
- captures = re.exec(this.input);
-
- if (captures && !captures[1].length) {
- re = /^\n( *)/;
- captures = re.exec(this.input);
- }
-
- if (captures && captures[1].length) this.indentRe = re;
- }
- return captures;
- },
-
- eos: function() {
- if (this.input.length) return;
- if (this.interpolated) {
- this.error('NO_END_BRACKET', 'End of line was reached with no closing bracket for interpolation.');
- }
- for (var i = 0; this.indentStack[i]; i++) {
- this.tokens.push(this.tokEnd(this.tok('outdent')));
- }
- this.tokens.push(this.tokEnd(this.tok('eos')));
- this.ended = true;
- return true;
- },
-
- blank: function() {
- var captures;
- if (captures = /^\n[ \t]*\n/.exec(this.input)) {
- this.consume(captures[0].length - 1);
- this.incrementLine(1);
- return true;
- }
- },
-
- comment: function() {
- var captures;
- if (captures = /^\/\/(-)?([^\n]*)/.exec(this.input)) {
- this.consume(captures[0].length);
- var tok = this.tok('comment', captures[2]);
- tok.buffer = '-' != captures[1];
- this.interpolationAllowed = tok.buffer;
- this.tokens.push(tok);
- this.incrementColumn(captures[0].length);
- this.tokEnd(tok);
- this.callLexerFunction('pipelessText');
- return true;
- }
- },
-
- interpolation: function() {
- if (/^#\{/.test(this.input)) {
- var match = this.bracketExpression(1);
- this.consume(match.end + 1);
- var tok = this.tok('interpolation', match.src);
- this.tokens.push(tok);
- this.incrementColumn(2);
- this.assertExpression(match.src);
- var splitted = match.src.split('\n');
- var lines = splitted.length - 1;
- this.incrementLine(lines);
- this.incrementColumn(splitted[lines].length + 1);
- this.tokEnd(tok);
- return true;
- }
- },
-
- tag: function() {
- var captures;
- if (captures = /^(\w(?:[-:\w]*\w)?)/.exec(this.input)) {
- var tok, name = captures[1], len = captures[0].length;
- this.consume(len);
- tok = this.tok('tag', name);
- this.tokens.push(tok);
- this.incrementColumn(len);
- this.tokEnd(tok);
- return true;
- }
- },
-
- filter: function(opts) {
- var tok = this.scan(/^:([\w\-]+)/, 'filter');
- var inInclude = opts && opts.inInclude;
- if (tok) {
- this.tokens.push(tok);
- this.incrementColumn(tok.val.length);
- this.tokEnd(tok);
- this.callLexerFunction('attrs');
- if (!inInclude) {
- this.interpolationAllowed = false;
- this.callLexerFunction('pipelessText');
- }
- return true;
- }
- },
-
- doctype: function() {
- var node = this.scanEndOfLine(/^doctype *([^\n]*)/, 'doctype');
- if (node) {
- this.tokens.push(this.tokEnd(node));
- return true;
- }
- },
-
- id: function() {
- var tok = this.scan(/^#([\w-]+)/, 'id');
- if (tok) {
- this.tokens.push(tok);
- this.incrementColumn(tok.val.length);
- this.tokEnd(tok);
- return true;
- }
- if (/^#/.test(this.input)) {
- this.error('INVALID_ID', '"' + /.[^ \t\(\#\.\:]*/.exec(this.input.substr(1))[0] + '" is not a valid ID.');
- }
- },
-
- className: function() {
- var tok = this.scan(/^\.([_a-z0-9\-]*[_a-z][_a-z0-9\-]*)/i, 'class');
- if (tok) {
- this.tokens.push(tok);
- this.incrementColumn(tok.val.length);
- this.tokEnd(tok);
- return true;
- }
- if (/^\.[_a-z0-9\-]+/i.test(this.input)) {
- this.error('INVALID_CLASS_NAME', 'Class names must contain at least one letter or underscore.');
- }
- if (/^\./.test(this.input)) {
- this.error('INVALID_CLASS_NAME', '"' + /.[^ \t\(\#\.\:]*/.exec(this.input.substr(1))[0] + '" is not a valid class name. Class names can only contain "_", "-", a-z and 0-9, and must contain at least one of "_", or a-z');
- }
- },
-
- endInterpolation: function () {
- if (this.interpolated && this.input[0] === ']') {
- this.input = this.input.substr(1);
- this.ended = true;
- return true;
- }
- },
- addText: function (type, value, prefix, escaped) {
- var tok;
- if (value + prefix === '') return;
- prefix = prefix || '';
- escaped = escaped || 0;
- var indexOfEnd = this.interpolated ? value.indexOf(']') : -1;
- var indexOfStart = this.interpolationAllowed ? value.indexOf('#[') : -1;
- var indexOfEscaped = this.interpolationAllowed ? value.indexOf('\\#[') : -1;
- var matchOfStringInterp = /(\\)?([#!]){((?:.|\n)*)$/.exec(value);
- var indexOfStringInterp = this.interpolationAllowed && matchOfStringInterp ? matchOfStringInterp.index : Infinity;
- if (indexOfEnd === -1) indexOfEnd = Infinity;
- if (indexOfStart === -1) indexOfStart = Infinity;
- if (indexOfEscaped === -1) indexOfEscaped = Infinity;
- if (indexOfEscaped !== Infinity && indexOfEscaped < indexOfEnd && indexOfEscaped < indexOfStart && indexOfEscaped < indexOfStringInterp) {
- prefix = prefix + value.substring(0, indexOfEscaped) + '#[';
- return this.addText(type, value.substring(indexOfEscaped + 3), prefix, escaped + 1);
- }
- if (indexOfStart !== Infinity && indexOfStart < indexOfEnd && indexOfStart < indexOfEscaped && indexOfStart < indexOfStringInterp) {
- tok = this.tok(type, prefix + value.substring(0, indexOfStart));
- this.incrementColumn(prefix.length + indexOfStart + escaped);
- this.tokens.push(this.tokEnd(tok));
- tok = this.tok('start-pug-interpolation');
- this.incrementColumn(2);
- this.tokens.push(this.tokEnd(tok));
- var child = new this.constructor(value.substr(indexOfStart + 2), {
- filename: this.filename,
- interpolated: true,
- startingLine: this.lineno,
- startingColumn: this.colno
- });
- var interpolated;
- try {
- interpolated = child.getTokens();
- } catch (ex) {
- if (ex.code && /^PUG:/.test(ex.code)) {
- this.colno = ex.column;
- this.error(ex.code.substr(4), ex.msg);
- }
- throw ex;
- }
- this.colno = child.colno;
- this.tokens = this.tokens.concat(interpolated);
- tok = this.tok('end-pug-interpolation');
- this.incrementColumn(1);
- this.tokens.push(this.tokEnd(tok));
- this.addText(type, child.input);
- return;
- }
- if (indexOfEnd !== Infinity && indexOfEnd < indexOfStart && indexOfEnd < indexOfEscaped && indexOfEnd < indexOfStringInterp) {
- if (prefix + value.substring(0, indexOfEnd)) {
- this.addText(type, value.substring(0, indexOfEnd), prefix);
- }
- this.ended = true;
- this.input = value.substr(value.indexOf(']') + 1) + this.input;
- return;
- }
- if (indexOfStringInterp !== Infinity) {
- if (matchOfStringInterp[1]) {
- prefix = prefix + value.substring(0, indexOfStringInterp) + '#{';
- return this.addText(type, value.substring(indexOfStringInterp + 3), prefix, escaped + 1);
- }
- var before = value.substr(0, indexOfStringInterp);
- if (prefix || before) {
- before = prefix + before;
- tok = this.tok(type, before);
- this.incrementColumn(before.length + escaped);
- this.tokens.push(this.tokEnd(tok));
- }
- var rest = matchOfStringInterp[3];
- var range;
- tok = this.tok('interpolated-code');
- this.incrementColumn(2);
- try {
- range = characterParser.parseUntil(rest, '}');
- } catch (ex) {
- if (ex.index !== undefined) {
- this.incrementColumn(ex.index);
- }
- if (ex.code === 'CHARACTER_PARSER:END_OF_STRING_REACHED') {
- this.error('NO_END_BRACKET', 'End of line was reached with no closing bracket for interpolation.');
- } else if (ex.code === 'CHARACTER_PARSER:MISMATCHED_BRACKET') {
- this.error('BRACKET_MISMATCH', ex.message);
- } else {
- throw ex;
- }
- }
- tok.mustEscape = matchOfStringInterp[2] === '#';
- tok.buffer = true;
- tok.val = range.src;
- this.assertExpression(range.src);
- if (range.end + 1 < rest.length) {
- rest = rest.substr(range.end + 1);
- this.incrementColumn(range.end + 1);
- this.tokens.push(this.tokEnd(tok));
- this.addText(type, rest);
- } else {
- this.incrementColumn(rest.length);
- this.tokens.push(this.tokEnd(tok));
- }
- return;
- }
- value = prefix + value;
- tok = this.tok(type, value);
- this.incrementColumn(value.length + escaped);
- this.tokens.push(this.tokEnd(tok));
- },
- text: function() {
- var tok = this.scan(/^(?:\| ?| )([^\n]+)/, 'text') ||
- this.scan(/^( )/, 'text') ||
- this.scan(/^\|( ?)/, 'text');
- if (tok) {
- this.addText('text', tok.val);
- return true;
- }
- },
- textHtml: function () {
- var tok = this.scan(/^(<[^\n]*)/, 'text-html');
- if (tok) {
- this.addText('text-html', tok.val);
- return true;
- }
- },
-
- dot: function() {
- var tok;
- if (tok = this.scanEndOfLine(/^\./, 'dot')) {
- this.tokens.push(this.tokEnd(tok));
- this.callLexerFunction('pipelessText');
- return true;
- }
- },
-
- "extends": function() {
- var tok = this.scan(/^extends?(?= |$|\n)/, 'extends');
- if (tok) {
- this.tokens.push(this.tokEnd(tok));
- if (!this.callLexerFunction('path')) {
- this.error('NO_EXTENDS_PATH', 'missing path for extends');
- }
- return true;
- }
- if (this.scan(/^extends?\b/)) {
- this.error('MALFORMED_EXTENDS', 'malformed extends');
- }
- },
-
- prepend: function() {
- var captures;
- if (captures = /^(?:block +)?prepend +([^\n]+)/.exec(this.input)) {
- var name = captures[1].trim();
- var comment = '';
- if (name.indexOf('//') !== -1) {
- comment = '//' + name.split('//').slice(1).join('//');
- name = name.split('//')[0].trim();
- }
- if (!name) return;
- var tok = this.tok('block', name);
- var len = captures[0].length - comment.length;
- while(this.whitespaceRe.test(this.input.charAt(len - 1))) len--;
- this.incrementColumn(len);
- tok.mode = 'prepend';
- this.tokens.push(this.tokEnd(tok));
- this.consume(captures[0].length - comment.length);
- this.incrementColumn(captures[0].length - comment.length - len);
- return true;
- }
- },
-
- append: function() {
- var captures;
- if (captures = /^(?:block +)?append +([^\n]+)/.exec(this.input)) {
- var name = captures[1].trim();
- var comment = '';
- if (name.indexOf('//') !== -1) {
- comment = '//' + name.split('//').slice(1).join('//');
- name = name.split('//')[0].trim();
- }
- if (!name) return;
- var tok = this.tok('block', name);
- var len = captures[0].length - comment.length;
- while(this.whitespaceRe.test(this.input.charAt(len - 1))) len--;
- this.incrementColumn(len);
- tok.mode = 'append';
- this.tokens.push(this.tokEnd(tok));
- this.consume(captures[0].length - comment.length);
- this.incrementColumn(captures[0].length - comment.length - len);
- return true;
- }
- },
-
- block: function() {
- var captures;
- if (captures = /^block +([^\n]+)/.exec(this.input)) {
- var name = captures[1].trim();
- var comment = '';
- if (name.indexOf('//') !== -1) {
- comment = '//' + name.split('//').slice(1).join('//');
- name = name.split('//')[0].trim();
- }
- if (!name) return;
- var tok = this.tok('block', name);
- var len = captures[0].length - comment.length;
- while(this.whitespaceRe.test(this.input.charAt(len - 1))) len--;
- this.incrementColumn(len);
- tok.mode = 'replace';
- this.tokens.push(this.tokEnd(tok));
- this.consume(captures[0].length - comment.length);
- this.incrementColumn(captures[0].length - comment.length - len);
- return true;
- }
- },
-
- mixinBlock: function() {
- var tok;
- if (tok = this.scanEndOfLine(/^block/, 'mixin-block')) {
- this.tokens.push(this.tokEnd(tok));
- return true;
- }
- },
-
- 'yield': function() {
- var tok = this.scanEndOfLine(/^yield/, 'yield');
- if (tok) {
- this.tokens.push(this.tokEnd(tok));
- return true;
- }
- },
-
- include: function() {
- var tok = this.scan(/^include(?=:| |$|\n)/, 'include');
- if (tok) {
- this.tokens.push(this.tokEnd(tok));
- while (this.callLexerFunction('filter', { inInclude: true }));
- if (!this.callLexerFunction('path')) {
- if (/^[^ \n]+/.test(this.input)) {
-
- this.fail();
- } else {
-
- this.error('NO_INCLUDE_PATH', 'missing path for include');
- }
- }
- return true;
- }
- if (this.scan(/^include\b/)) {
- this.error('MALFORMED_INCLUDE', 'malformed include');
- }
- },
-
- path: function() {
- var tok = this.scanEndOfLine(/^ ([^\n]+)/, 'path');
- if (tok && (tok.val = tok.val.trim())) {
- this.tokens.push(this.tokEnd(tok));
- return true;
- }
- },
-
- "case": function() {
- var tok = this.scanEndOfLine(/^case +([^\n]+)/, 'case');
- if (tok) {
- this.incrementColumn(-tok.val.length);
- this.assertExpression(tok.val);
- this.incrementColumn(tok.val.length);
- this.tokens.push(this.tokEnd(tok));
- return true;
- }
- if (this.scan(/^case\b/)) {
- this.error('NO_CASE_EXPRESSION', 'missing expression for case');
- }
- },
-
- when: function() {
- var tok = this.scanEndOfLine(/^when +([^:\n]+)/, 'when');
- if (tok) {
- var parser = characterParser(tok.val);
- while (parser.isNesting() || parser.isString()) {
- var rest = /:([^:\n]+)/.exec(this.input);
- if (!rest) break;
- tok.val += rest[0];
- this.consume(rest[0].length);
- this.incrementColumn(rest[0].length);
- parser = characterParser(tok.val);
- }
- this.incrementColumn(-tok.val.length);
- this.assertExpression(tok.val);
- this.incrementColumn(tok.val.length);
- this.tokens.push(this.tokEnd(tok));
- return true;
- }
- if (this.scan(/^when\b/)) {
- this.error('NO_WHEN_EXPRESSION', 'missing expression for when');
- }
- },
-
- "default": function() {
- var tok = this.scanEndOfLine(/^default/, 'default');
- if (tok) {
- this.tokens.push(this.tokEnd(tok));
- return true;
- }
- if (this.scan(/^default\b/)) {
- this.error('DEFAULT_WITH_EXPRESSION', 'default should not have an expression');
- }
- },
-
- call: function(){
- var tok, captures, increment;
- if (captures = /^\+(\s*)(([-\w]+)|(#\{))/.exec(this.input)) {
-
- if (captures[3]) {
-
- increment = captures[0].length;
- this.consume(increment);
- tok = this.tok('call', captures[3]);
- } else {
-
- var match = this.bracketExpression(2 + captures[1].length);
- increment = match.end + 1;
- this.consume(increment);
- this.assertExpression(match.src);
- tok = this.tok('call', '#{'+match.src+'}');
- }
- this.incrementColumn(increment);
- tok.args = null;
-
- if (captures = /^ *\(/.exec(this.input)) {
- var range = this.bracketExpression(captures[0].length - 1);
- if (!/^\s*[-\w]+ *=/.test(range.src)) {
- this.incrementColumn(1);
- this.consume(range.end + 1);
- tok.args = range.src;
- this.assertExpression('[' + tok.args + ']');
- for (var i = 0; i <= tok.args.length; i++) {
- if (tok.args[i] === '\n') {
- this.incrementLine(1);
- } else {
- this.incrementColumn(1);
- }
- }
- }
- }
- this.tokens.push(this.tokEnd(tok));
- return true;
- }
- },
-
- mixin: function(){
- var captures;
- if (captures = /^mixin +([-\w]+)(?: *\((.*)\))? */.exec(this.input)) {
- this.consume(captures[0].length);
- var tok = this.tok('mixin', captures[1]);
- tok.args = captures[2] || null;
- this.incrementColumn(captures[0].length);
- this.tokens.push(this.tokEnd(tok));
- return true;
- }
- },
-
- conditional: function() {
- var captures;
- if (captures = /^(if|unless|else if|else)\b([^\n]*)/.exec(this.input)) {
- this.consume(captures[0].length);
- var type = captures[1].replace(/ /g, '-');
- var js = captures[2] && captures[2].trim();
-
- var tok = this.tok(type, js);
- this.incrementColumn(captures[0].length - js.length);
- switch (type) {
- case 'if':
- case 'else-if':
- this.assertExpression(js);
- break;
- case 'unless':
- this.assertExpression(js);
- tok.val = '!(' + js + ')';
- tok.type = 'if';
- break;
- case 'else':
- if (js) {
- this.error(
- 'ELSE_CONDITION',
- '`else` cannot have a condition, perhaps you meant `else if`'
- );
- }
- break;
- }
- this.incrementColumn(js.length);
- this.tokens.push(this.tokEnd(tok));
- return true;
- }
- },
-
- "while": function() {
- var captures, tok;
- if (captures = /^while +([^\n]+)/.exec(this.input)) {
- this.consume(captures[0].length);
- this.assertExpression(captures[1]);
- tok = this.tok('while', captures[1]);
- this.incrementColumn(captures[0].length);
- this.tokens.push(this.tokEnd(tok));
- return true;
- }
- if (this.scan(/^while\b/)) {
- this.error('NO_WHILE_EXPRESSION', 'missing expression for while');
- }
- },
-
- each: function() {
- var captures;
- if (captures = /^(?:each|for) +([a-zA-Z_$][\w$]*)(?: *, *([a-zA-Z_$][\w$]*))? * in *([^\n]+)/.exec(this.input)) {
- this.consume(captures[0].length);
- var tok = this.tok('each', captures[1]);
- tok.key = captures[2] || null;
- this.incrementColumn(captures[0].length - captures[3].length);
- this.assertExpression(captures[3])
- tok.code = captures[3];
- this.incrementColumn(captures[3].length);
- this.tokens.push(this.tokEnd(tok));
- return true;
- }
- if (this.scan(/^(?:each|for)\b/)) {
- this.error('MALFORMED_EACH', 'malformed each');
- }
- if (captures = /^- *(?:each|for) +([a-zA-Z_$][\w$]*)(?: *, *([a-zA-Z_$][\w$]*))? +in +([^\n]+)/.exec(this.input)) {
- this.error(
- 'MALFORMED_EACH',
- 'Pug each and for should no longer be prefixed with a dash ("-"). They are pug keywords and not part of JavaScript.'
- );
- }
- },
-
- code: function() {
- var captures;
- if (captures = /^(!?=|-)[ \t]*([^\n]+)/.exec(this.input)) {
- var flags = captures[1];
- var code = captures[2];
- var shortened = 0;
- if (this.interpolated) {
- var parsed;
- try {
- parsed = characterParser.parseUntil(code, ']');
- } catch (err) {
- if (err.index !== undefined) {
- this.incrementColumn(captures[0].length - code.length + err.index);
- }
- if (err.code === 'CHARACTER_PARSER:END_OF_STRING_REACHED') {
- this.error('NO_END_BRACKET', 'End of line was reached with no closing bracket for interpolation.');
- } else if (err.code === 'CHARACTER_PARSER:MISMATCHED_BRACKET') {
- this.error('BRACKET_MISMATCH', err.message);
- } else {
- throw err;
- }
- }
- shortened = code.length - parsed.end;
- code = parsed.src;
- }
- var consumed = captures[0].length - shortened;
- this.consume(consumed);
- var tok = this.tok('code', code);
- tok.mustEscape = flags.charAt(0) === '=';
- tok.buffer = flags.charAt(0) === '=' || flags.charAt(1) === '=';
-
-
-
-
-
-
-
-
-
-
-
-
- this.incrementColumn(captures[0].length - captures[2].length);
- if (tok.buffer) this.assertExpression(code);
- this.tokens.push(tok);
-
-
-
-
-
-
-
-
-
-
- this.incrementColumn(code.length);
- this.tokEnd(tok);
- return true;
- }
- },
-
- blockCode: function() {
- var tok
- if (tok = this.scanEndOfLine(/^-/, 'blockcode')) {
- this.tokens.push(this.tokEnd(tok));
- this.interpolationAllowed = false;
- this.callLexerFunction('pipelessText');
- return true;
- }
- },
-
-
- attribute: function(str){
- var quote = '';
- var quoteRe = /['"]/;
- var key = '';
- var i;
-
-
- for(i = 0; i < str.length; i++){
- if(!this.whitespaceRe.test(str[i])) break;
- if(str[i] === '\n'){
- this.incrementLine(1);
- } else {
- this.incrementColumn(1);
- }
- }
-
- if(i === str.length){
- return '';
- }
-
- var tok = this.tok('attribute');
-
-
- if(quoteRe.test(str[i])){
- quote = str[i];
- this.incrementColumn(1);
- i++;
- }
-
-
- for (; i < str.length; i++) {
-
- if(quote){
- if (str[i] === quote) {
- this.incrementColumn(1);
- i++;
- break;
- }
- } else {
- if(this.whitespaceRe.test(str[i]) || str[i] === '!' || str[i] === '=' || str[i] === ',') {
- break;
- }
- }
-
- key += str[i];
-
- if (str[i] === '\n') {
- this.incrementLine(1);
- } else {
- this.incrementColumn(1);
- }
- }
-
- tok.name = key;
-
- var valueResponse = this.attributeValue(str.substr(i));
-
- if (valueResponse.val) {
- tok.val = valueResponse.val;
- tok.mustEscape = valueResponse.mustEscape;
- } else {
-
- tok.val = true;
- tok.mustEscape = true;
- }
-
- str = valueResponse.remainingSource;
-
- this.tokens.push(this.tokEnd(tok));
-
- for(i = 0; i < str.length; i++){
- if(!this.whitespaceRe.test(str[i])) {
- break;
- }
- if(str[i] === '\n'){
- this.incrementLine(1);
- } else {
- this.incrementColumn(1);
- }
- }
-
- if(str[i] === ','){
- this.incrementColumn(1);
- i++;
- }
-
- return str.substr(i);
- },
-
-
- attributeValue: function(str){
- var quoteRe = /['"]/;
- var val = '';
- var done, i, x;
- var escapeAttr = true;
- var state = characterParser.defaultState();
- var col = this.colno;
- var line = this.lineno;
-
-
- for(i = 0; i < str.length; i++){
- if(!this.whitespaceRe.test(str[i])) break;
- if(str[i] === '\n'){
- line++;
- col = 1;
- } else {
- col++;
- }
- }
-
- if(i === str.length){
- return { remainingSource: str };
- }
-
- if(str[i] === '!'){
- escapeAttr = false;
- col++;
- i++;
- if (str[i] !== '=') this.error('INVALID_KEY_CHARACTER', 'Unexpected character ' + str[i] + ' expected `=`');
- }
-
- if(str[i] !== '='){
-
- if (i === 0 && str && !this.whitespaceRe.test(str[0]) && str[0] !== ','){
- this.error('INVALID_KEY_CHARACTER', 'Unexpected character ' + str[0] + ' expected `=`');
- } else {
- return { remainingSource: str };
- }
- }
-
- this.lineno = line;
- this.colno = col + 1;
- i++;
-
-
- for(; i < str.length; i++){
- if(!this.whitespaceRe.test(str[i])) break;
- if(str[i] === '\n'){
- this.incrementLine(1);
- } else {
- this.incrementColumn(1);
- }
- }
-
- line = this.lineno;
- col = this.colno;
-
-
- for (; i < str.length; i++) {
-
- if (!(state.isNesting() || state.isString())){
-
- if (this.whitespaceRe.test(str[i])) {
- done = false;
-
-
- for (x = i; x < str.length; x++) {
- if (!this.whitespaceRe.test(str[x])) {
-
-
- const isNotPunctuator = !characterParser.isPunctuator(str[x])
- const isQuote = quoteRe.test(str[x])
- const isColon = str[x] === ':'
- const isSpreadOperator = str[x] + str[x + 1] + str[x + 2] === '...'
- if ((isNotPunctuator || isQuote || isColon || isSpreadOperator) && this.assertExpression(val, true)) {
- done = true;
- }
- break;
- }
- }
-
-
-
- if(done || x === str.length){
- break;
- }
- }
-
-
-
- if(str[i] === ',' && this.assertExpression(val, true)){
- break;
- }
- }
-
- state = characterParser.parseChar(str[i], state);
- val += str[i];
-
- if (str[i] === '\n') {
- line++;
- col = 1;
- } else {
- col++;
- }
- }
-
- this.assertExpression(val);
-
- this.lineno = line;
- this.colno = col;
-
- return { val: val, mustEscape: escapeAttr, remainingSource: str.substr(i) };
- },
-
-
- attrs: function() {
- var tok;
-
- if ('(' == this.input.charAt(0)) {
- tok = this.tok('start-attributes');
- var index = this.bracketExpression().end;
- var str = this.input.substr(1, index-1);
- this.incrementColumn(1);
- this.tokens.push(this.tokEnd(tok));
- this.assertNestingCorrect(str);
- this.consume(index + 1);
- while(str){
- str = this.attribute(str);
- }
- tok = this.tok('end-attributes');
- this.incrementColumn(1);
- this.tokens.push(this.tokEnd(tok));
- return true;
- }
- },
-
- attributesBlock: function () {
- if (/^&attributes\b/.test(this.input)) {
- var consumed = 11;
- this.consume(consumed);
- var tok = this.tok('&attributes');
- this.incrementColumn(consumed);
- var args = this.bracketExpression();
- consumed = args.end + 1;
- this.consume(consumed);
- tok.val = args.src;
- this.incrementColumn(consumed);
- this.tokens.push(this.tokEnd(tok));
- return true;
- }
- },
-
- indent: function() {
- var captures = this.scanIndentation();
- var tok;
- if (captures) {
- var indents = captures[1].length;
- this.incrementLine(1);
- this.consume(indents + 1);
- if (' ' == this.input[0] || '\t' == this.input[0]) {
- this.error('INVALID_INDENTATION', 'Invalid indentation, you can use tabs or spaces but not both');
- }
-
- if ('\n' == this.input[0]) {
- this.interpolationAllowed = true;
- return this.tokEnd(this.tok('newline'));
- }
-
- if (indents < this.indentStack[0]) {
- var outdent_count = 0;
- while (this.indentStack[0] > indents) {
- if (this.indentStack[1] < indents) {
- this.error('INCONSISTENT_INDENTATION', 'Inconsistent indentation. Expecting either ' + this.indentStack[1] + ' or ' + this.indentStack[0] + ' spaces/tabs.');
- }
- outdent_count++;
- this.indentStack.shift();
- }
- while(outdent_count--){
- this.colno = 1;
- tok = this.tok('outdent');
- this.colno = this.indentStack[0] + 1;
- this.tokens.push(this.tokEnd(tok));
- }
-
- } else if (indents && indents != this.indentStack[0]) {
- tok = this.tok('indent', indents);
- this.colno = 1 + indents;
- this.tokens.push(this.tokEnd(tok));
- this.indentStack.unshift(indents);
-
- } else {
- tok = this.tok('newline');
- this.colno = 1 + Math.min(this.indentStack[0] || 0, indents);
- this.tokens.push(this.tokEnd(tok));
- }
- this.interpolationAllowed = true;
- return true;
- }
- },
- pipelessText: function pipelessText(indents) {
- while (this.callLexerFunction('blank'));
- var captures = this.scanIndentation();
- indents = indents || captures && captures[1].length;
- if (indents > this.indentStack[0]) {
- this.tokens.push(this.tokEnd(this.tok('start-pipeless-text')));
- var tokens = [];
- var token_indent = [];
- var isMatch;
-
-
- var stringPtr = 0;
- do {
-
- var i = this.input.substr(stringPtr + 1).indexOf('\n');
- if (-1 == i) i = this.input.length - stringPtr - 1;
- var str = this.input.substr(stringPtr + 1, i);
- var lineCaptures = this.indentRe.exec('\n' + str);
- var lineIndents = lineCaptures && lineCaptures[1].length;
- isMatch = lineIndents >= indents;
- token_indent.push(isMatch);
- isMatch = isMatch || !str.trim();
- if (isMatch) {
-
- stringPtr += str.length + 1;
- tokens.push(str.substr(indents));
- } else if (lineIndents > this.indentStack[0]) {
-
-
- this.tokens.pop();
- return pipelessText.call(this, lineCaptures[1].length);
- }
- } while((this.input.length - stringPtr) && isMatch);
- this.consume(stringPtr);
- while (this.input.length === 0 && tokens[tokens.length - 1] === '') tokens.pop();
- tokens.forEach(function (token, i) {
- var tok;
- this.incrementLine(1);
- if (i !== 0) tok = this.tok('newline');
- if (token_indent[i]) this.incrementColumn(indents);
- if (tok) this.tokens.push(this.tokEnd(tok));
- this.addText('text', token);
- }.bind(this));
- this.tokens.push(this.tokEnd(this.tok('end-pipeless-text')));
- return true;
- }
- },
-
- slash: function() {
- var tok = this.scan(/^\//, 'slash');
- if (tok) {
- this.tokens.push(this.tokEnd(tok));
- return true;
- }
- },
-
- colon: function() {
- var tok = this.scan(/^: +/, ':');
- if (tok) {
- this.tokens.push(this.tokEnd(tok));
- return true;
- }
- },
- fail: function () {
- this.error('UNEXPECTED_TEXT', 'unexpected text "' + this.input.substr(0, 5) + '"');
- },
- callLexerFunction: function (func) {
- var rest = [];
- for (var i = 1; i < arguments.length; i++) {
- rest.push(arguments[i]);
- }
- var pluginArgs = [this].concat(rest);
- for (var i = 0; i < this.plugins.length; i++) {
- var plugin = this.plugins[i];
- if (plugin[func] && plugin[func].apply(plugin, pluginArgs)) {
- return true;
- }
- }
- return this[func].apply(this, rest);
- },
-
- advance: function() {
- return this.callLexerFunction('blank')
- || this.callLexerFunction('eos')
- || this.callLexerFunction('endInterpolation')
- || this.callLexerFunction('yield')
- || this.callLexerFunction('doctype')
- || this.callLexerFunction('interpolation')
- || this.callLexerFunction('case')
- || this.callLexerFunction('when')
- || this.callLexerFunction('default')
- || this.callLexerFunction('extends')
- || this.callLexerFunction('append')
- || this.callLexerFunction('prepend')
- || this.callLexerFunction('block')
- || this.callLexerFunction('mixinBlock')
- || this.callLexerFunction('include')
- || this.callLexerFunction('mixin')
- || this.callLexerFunction('call')
- || this.callLexerFunction('conditional')
- || this.callLexerFunction('each')
- || this.callLexerFunction('while')
- || this.callLexerFunction('tag')
- || this.callLexerFunction('filter')
- || this.callLexerFunction('blockCode')
- || this.callLexerFunction('code')
- || this.callLexerFunction('id')
- || this.callLexerFunction('dot')
- || this.callLexerFunction('className')
- || this.callLexerFunction('attrs')
- || this.callLexerFunction('attributesBlock')
- || this.callLexerFunction('indent')
- || this.callLexerFunction('text')
- || this.callLexerFunction('textHtml')
- || this.callLexerFunction('comment')
- || this.callLexerFunction('slash')
- || this.callLexerFunction('colon')
- || this.fail();
- },
-
- getTokens: function () {
- while (!this.ended) {
- this.callLexerFunction('advance');
- }
- return this.tokens;
- }
- };
|