179 строки
9.0 KiB
Plaintext
179 строки
9.0 KiB
Plaintext
/*
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* Copyright (C) 2009 Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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// Generate js file as follows:
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//
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// re2c -isc WebCore/inspector/front-end/SourceJavaScriptTokenizer.re2js \
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// | sed 's|^yy\([^:]*\)*\:|case \1:|' \
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// | sed 's|[*]cursor[+][+]|this._charAt(cursor++)|' \
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// | sed 's|[[*][+][+]cursor|this._charAt(++cursor)|' \
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// | sed 's|[*]cursor|this._charAt(cursor)|' \
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// | sed 's|yych = \*\([^;]*\)|yych = this._charAt\1|' \
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// | sed 's|goto case \([^;]*\)|{ gotoCase = \1; continue; }|' \
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// | sed 's|unsigned\ int|var|' \
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// | sed 's|var\ yych|case 1: var yych|'
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WebInspector.SourceJavaScriptTokenizer = function()
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{
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WebInspector.SourceTokenizer.call(this);
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this._keywords = [
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"null", "true", "false", "break", "case", "catch", "const", "default", "finally", "for",
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"instanceof", "new", "var", "continue", "function", "return", "void", "delete", "if",
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"this", "do", "while", "else", "in", "switch", "throw", "try", "typeof", "debugger",
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"class", "enum", "export", "extends", "import", "super", "get", "set", "with"
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].keySet();
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this._lexConditions = {
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DIV: 0,
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NODIV: 1,
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COMMENT: 2,
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DSTRING: 3,
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SSTRING: 4,
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REGEX: 5
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};
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this.case_DIV = 1000;
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this.case_NODIV = 1001;
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this.case_COMMENT = 1002;
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this.case_DSTRING = 1003;
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this.case_SSTRING = 1004;
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this.case_REGEX = 1005;
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this.initialCondition = { lexCondition: this._lexConditions.NODIV }
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this.condition = this.initialCondition;
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}
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WebInspector.SourceJavaScriptTokenizer.prototype = {
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nextToken: function(cursor)
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{
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var cursorOnEnter = cursor;
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var gotoCase = 1;
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while (1) {
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switch (gotoCase)
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// Following comment is replaced with generated state machine.
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/*!re2c
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re2c:define:YYCTYPE = "var";
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re2c:define:YYCURSOR = cursor;
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re2c:define:YYGETCONDITION = "this.getLexCondition";
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re2c:define:YYSETCONDITION = "this.setLexCondition";
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re2c:condprefix = "case this.case_";
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re2c:condenumprefix = "this._lexConditions.";
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re2c:yyfill:enable = 0;
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re2c:labelprefix = "case ";
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re2c:indent:top = 2;
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re2c:indent:string = " ";
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LineComment = "//" [^\r\n]*;
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CommentContent = ([^*\r\n] | ("*"+[^/*]))*;
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Comment = "/*" CommentContent "*"+ "/";
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CommentStart = "/*" CommentContent [\r\n];
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CommentEnd = CommentContent "*"+ "/";
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DecimalDigit = [0-9];
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NonZeroDigit = [1-9];
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OctalDigit = [0-7];
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HexDigit = [0-9a-fA-F];
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SignedInteger = ("+"|"-")? DecimalDigit+;
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ExponentPart = ("e" | "E") SignedInteger;
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DecimalIntegerLiteral = "0" | NonZeroDigit DecimalDigit*;
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DecimalLiteral = DecimalIntegerLiteral "." DecimalDigit* ExponentPart? | "." DecimalDigit+ ExponentPart? | DecimalIntegerLiteral ExponentPart?;
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HexIntegerLiteral = "0" ("x"|"X") HexDigit+;
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OctalIntegerLiteral = "0" OctalDigit+;
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NumericLiteral = DecimalLiteral | HexIntegerLiteral | OctalIntegerLiteral;
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Punctuation = [\!\%\&\(\*\+\,\-\.\:\;\<\=\>\?\[\]\^\{\|\}\~] | "!=" | "!==" | "%=" | "&&" | "&=" | "*=" | "++" | "+=" | "--" | "-=" | "<<" | "<<=" | "<=" | "==" | "===" | ">=" | ">>" | ">>=" | ">>>" | ">>>=" | "^=" | "|=" | "||";
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Division = "/" | "/=";
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RightParen = ")";
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Letter = [a-zA-Z\x80-\xFF];
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UnicodeEscapeSequence = "\\u" HexDigit HexDigit HexDigit HexDigit;
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IdentifierStart = Letter | "_" | "$" | UnicodeEscapeSequence;
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IdentifierPart = IdentifierStart | DecimalDigit;
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Identifier = IdentifierStart IdentifierPart *;
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DoubleStringContent = ([^\r\n\"\\] | UnicodeEscapeSequence | "\\" ['"\\bfnrtv])*;
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SingleStringContent = ([^\r\n\'\\] | UnicodeEscapeSequence | "\\" ['"\\bfnrtv])*;
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StringLiteral = "\"" DoubleStringContent "\"" | "'" SingleStringContent "'";
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DoubleStringStart = "\"" DoubleStringContent "\\" [\r\n];
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DoubleStringEnd = DoubleStringContent "\"";
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SingleStringStart = "'" SingleStringContent "\\" [\r\n];
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SingleStringEnd = SingleStringContent "'";
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BackslashSequence = "\\" [^\r\n];
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RegexSet = "[" ([^\r\n*\\/] | BackslashSequence)* "]";
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RegexFirstChar = [^\r\n*\\/\[\]] | BackslashSequence | RegexSet;
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RegexChar = [^\r\n\\/\[\]] | BackslashSequence | RegexSet;
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RegexContent = RegexChar*;
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Regex = "/" RegexFirstChar RegexContent "/" [igm]*;
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RegexStart = "/" RegexFirstChar RegexContent "\\";
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RegexEnd = RegexContent "/" [igm]*;
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<DIV,NODIV> LineComment { this.tokenType = "javascript-comment"; return cursor; }
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<DIV,NODIV> Comment { this.tokenType = "javascript-comment"; return cursor; }
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<DIV,NODIV> CommentStart => COMMENT { this.tokenType = "javascript-comment"; return cursor; }
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<COMMENT> CommentContent => COMMENT { this.tokenType = "javascript-comment"; return cursor; }
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<COMMENT> CommentEnd => NODIV { this.tokenType = "javascript-comment"; return cursor; }
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<DIV,NODIV> StringLiteral { this.tokenType = "javascript-string"; return cursor; }
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<DIV,NODIV> DoubleStringStart => DSTRING { this.tokenType = "javascript-string"; return cursor; }
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<DSTRING> DoubleStringContent => DSTRING { this.tokenType = "javascript-string"; return cursor; }
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<DSTRING> DoubleStringEnd => NODIV { this.tokenType = "javascript-string"; return cursor; }
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<DIV,NODIV> SingleStringStart => SSTRING { this.tokenType = "javascript-string"; return cursor; }
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<SSTRING> SingleStringContent => SSTRING { this.tokenType = "javascript-string"; return cursor; }
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<SSTRING> SingleStringEnd => NODIV { this.tokenType = "javascript-string"; return cursor; }
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<NODIV> Regex { this.tokenType = "javascript-regexp"; return cursor; }
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<NODIV> RegexStart => REGEX { this.tokenType = "javascript-regexp"; return cursor; }
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<REGEX> RegexContent => REGEX { this.tokenType = "javascript-regexp"; return cursor; }
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<REGEX> RegexEnd => NODIV { this.tokenType = "javascript-regexp"; return cursor; }
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<DIV,NODIV> NumericLiteral => DIV { this.tokenType = "javascript-number"; return cursor; }
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<DIV,NODIV> Identifier => DIV
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{
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var token = this._line.substring(cursorOnEnter, cursor);
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if (token in this._keywords)
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this.tokenType = "javascript-keyword";
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else
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this.tokenType = "javascript-ident";
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return cursor;
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}
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<DIV,NODIV> RightParen => DIV { this.tokenType = null; return cursor; }
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<DIV,NODIV> Punctuation => NODIV { this.tokenType = null; return cursor; }
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<DIV> Division => NODIV { this.tokenType = null; return cursor; }
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<*> [^] { this.tokenType = null; return cursor; }
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*/
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}
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}
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}
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WebInspector.SourceJavaScriptTokenizer.prototype.__proto__ = WebInspector.SourceTokenizer.prototype;
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