diff -r 8f9580309846 -r c8f47f0b6697 thirdparty/jsdoctoolkit/app/lib/JSDOC/TokenReader.js --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/thirdparty/jsdoctoolkit/app/lib/JSDOC/TokenReader.js Sun Oct 25 19:15:44 2009 +0000 @@ -0,0 +1,332 @@ +if (typeof JSDOC == "undefined") JSDOC = {}; + +/** + @class Search a {@link JSDOC.TextStream} for language tokens. +*/ +JSDOC.TokenReader = function() { + this.keepDocs = true; + this.keepWhite = false; + this.keepComments = false; +} + +/** + @type {JSDOC.Token[]} + */ +JSDOC.TokenReader.prototype.tokenize = function(/**JSDOC.TextStream*/stream) { + var tokens = []; + /**@ignore*/ tokens.last = function() { return tokens[tokens.length-1]; } + /**@ignore*/ tokens.lastSym = function() { + for (var i = tokens.length-1; i >= 0; i--) { + if (!(tokens[i].is("WHIT") || tokens[i].is("COMM"))) return tokens[i]; + } + } + + while (!stream.look().eof) { + if (this.read_mlcomment(stream, tokens)) continue; + if (this.read_slcomment(stream, tokens)) continue; + if (this.read_dbquote(stream, tokens)) continue; + if (this.read_snquote(stream, tokens)) continue; + if (this.read_regx(stream, tokens)) continue; + if (this.read_numb(stream, tokens)) continue; + if (this.read_punc(stream, tokens)) continue; + if (this.read_newline(stream, tokens)) continue; + if (this.read_space(stream, tokens)) continue; + if (this.read_word(stream, tokens)) continue; + + // if execution reaches here then an error has happened + tokens.push(new JSDOC.Token(stream.next(), "TOKN", "UNKNOWN_TOKEN")); + } + return tokens; +} + +/** + @returns {Boolean} Was the token found? + */ +JSDOC.TokenReader.prototype.read_word = function(/**JSDOC.TokenStream*/stream, tokens) { + var found = ""; + while (!stream.look().eof && JSDOC.Lang.isWordChar(stream.look())) { + found += stream.next(); + } + + if (found === "") { + return false; + } + else { + var name; + if ((name = JSDOC.Lang.keyword(found))) tokens.push(new JSDOC.Token(found, "KEYW", name)); + else tokens.push(new JSDOC.Token(found, "NAME", "NAME")); + return true; + } +} + +/** + @returns {Boolean} Was the token found? + */ +JSDOC.TokenReader.prototype.read_punc = function(/**JSDOC.TokenStream*/stream, tokens) { + var found = ""; + var name; + while (!stream.look().eof && JSDOC.Lang.punc(found+stream.look())) { + found += stream.next(); + } + + if (found === "") { + return false; + } + else { + tokens.push(new JSDOC.Token(found, "PUNC", JSDOC.Lang.punc(found))); + return true; + } +} + +/** + @returns {Boolean} Was the token found? + */ +JSDOC.TokenReader.prototype.read_space = function(/**JSDOC.TokenStream*/stream, tokens) { + var found = ""; + + while (!stream.look().eof && JSDOC.Lang.isSpace(stream.look())) { + found += stream.next(); + } + + if (found === "") { + return false; + } + else { + if (this.collapseWhite) found = " "; + if (this.keepWhite) tokens.push(new JSDOC.Token(found, "WHIT", "SPACE")); + return true; + } +} + +/** + @returns {Boolean} Was the token found? + */ +JSDOC.TokenReader.prototype.read_newline = function(/**JSDOC.TokenStream*/stream, tokens) { + var found = ""; + + while (!stream.look().eof && JSDOC.Lang.isNewline(stream.look())) { + found += stream.next(); + } + + if (found === "") { + return false; + } + else { + if (this.collapseWhite) found = "\n"; + if (this.keepWhite) tokens.push(new JSDOC.Token(found, "WHIT", "NEWLINE")); + return true; + } +} + +/** + @returns {Boolean} Was the token found? + */ +JSDOC.TokenReader.prototype.read_mlcomment = function(/**JSDOC.TokenStream*/stream, tokens) { + if (stream.look() == "/" && stream.look(1) == "*") { + var found = stream.next(2); + + while (!stream.look().eof && !(stream.look(-1) == "/" && stream.look(-2) == "*")) { + found += stream.next(); + } + + // to start doclet we allow /** or /*** but not /**/ or /**** + if (/^\/\*\*([^\/]|\*[^*])/.test(found) && this.keepDocs) tokens.push(new JSDOC.Token(found, "COMM", "JSDOC")); + else if (this.keepComments) tokens.push(new JSDOC.Token(found, "COMM", "MULTI_LINE_COMM")); + return true; + } + return false; +} + +/** + @returns {Boolean} Was the token found? + */ +JSDOC.TokenReader.prototype.read_slcomment = function(/**JSDOC.TokenStream*/stream, tokens) { + var found; + if ( + (stream.look() == "/" && stream.look(1) == "/" && (found=stream.next(2))) + || + (stream.look() == "<" && stream.look(1) == "!" && stream.look(2) == "-" && stream.look(3) == "-" && (found=stream.next(4))) + ) { + + while (!stream.look().eof && !JSDOC.Lang.isNewline(stream.look())) { + found += stream.next(); + } + + if (this.keepComments) { + tokens.push(new JSDOC.Token(found, "COMM", "SINGLE_LINE_COMM")); + } + return true; + } + return false; +} + +/** + @returns {Boolean} Was the token found? + */ +JSDOC.TokenReader.prototype.read_dbquote = function(/**JSDOC.TokenStream*/stream, tokens) { + if (stream.look() == "\"") { + // find terminator + var string = stream.next(); + + while (!stream.look().eof) { + if (stream.look() == "\\") { + if (JSDOC.Lang.isNewline(stream.look(1))) { + do { + stream.next(); + } while (!stream.look().eof && JSDOC.Lang.isNewline(stream.look())); + string += "\\\n"; + } + else { + string += stream.next(2); + } + } + else if (stream.look() == "\"") { + string += stream.next(); + tokens.push(new JSDOC.Token(string, "STRN", "DOUBLE_QUOTE")); + return true; + } + else { + string += stream.next(); + } + } + } + return false; // error! unterminated string +} + +/** + @returns {Boolean} Was the token found? + */ +JSDOC.TokenReader.prototype.read_snquote = function(/**JSDOC.TokenStream*/stream, tokens) { + if (stream.look() == "'") { + // find terminator + var string = stream.next(); + + while (!stream.look().eof) { + if (stream.look() == "\\") { // escape sequence + string += stream.next(2); + } + else if (stream.look() == "'") { + string += stream.next(); + tokens.push(new JSDOC.Token(string, "STRN", "SINGLE_QUOTE")); + return true; + } + else { + string += stream.next(); + } + } + } + return false; // error! unterminated string +} + +/** + @returns {Boolean} Was the token found? + */ +JSDOC.TokenReader.prototype.read_numb = function(/**JSDOC.TokenStream*/stream, tokens) { + if (stream.look() === "0" && stream.look(1) == "x") { + return this.read_hex(stream, tokens); + } + + var found = ""; + + while (!stream.look().eof && JSDOC.Lang.isNumber(found+stream.look())){ + found += stream.next(); + } + + if (found === "") { + return false; + } + else { + if (/^0[0-7]/.test(found)) tokens.push(new JSDOC.Token(found, "NUMB", "OCTAL")); + else tokens.push(new JSDOC.Token(found, "NUMB", "DECIMAL")); + return true; + } +} +/*t: + requires("../lib/JSDOC/TextStream.js"); + requires("../lib/JSDOC/Token.js"); + requires("../lib/JSDOC/Lang.js"); + + plan(3, "testing JSDOC.TokenReader.prototype.read_numb"); + + //// setup + var src = "function foo(num){while (num+8.0 >= 0x20 && num < 0777){}}"; + var tr = new JSDOC.TokenReader(); + var tokens = tr.tokenize(new JSDOC.TextStream(src)); + + var hexToken, octToken, decToken; + for (var i = 0; i < tokens.length; i++) { + if (tokens[i].name == "HEX_DEC") hexToken = tokens[i]; + if (tokens[i].name == "OCTAL") octToken = tokens[i]; + if (tokens[i].name == "DECIMAL") decToken = tokens[i]; + } + //// + + is(decToken.data, "8.0", "decimal number is found in source."); + is(hexToken.data, "0x20", "hexdec number is found in source (issue #99)."); + is(octToken.data, "0777", "octal number is found in source."); +*/ + +/** + @returns {Boolean} Was the token found? + */ +JSDOC.TokenReader.prototype.read_hex = function(/**JSDOC.TokenStream*/stream, tokens) { + var found = stream.next(2); + + while (!stream.look().eof) { + if (JSDOC.Lang.isHexDec(found) && !JSDOC.Lang.isHexDec(found+stream.look())) { // done + tokens.push(new JSDOC.Token(found, "NUMB", "HEX_DEC")); + return true; + } + else { + found += stream.next(); + } + } + return false; +} + +/** + @returns {Boolean} Was the token found? + */ +JSDOC.TokenReader.prototype.read_regx = function(/**JSDOC.TokenStream*/stream, tokens) { + var last; + if ( + stream.look() == "/" + && + ( + + ( + !(last = tokens.lastSym()) // there is no last, the regex is the first symbol + || + ( + !last.is("NUMB") + && !last.is("NAME") + && !last.is("RIGHT_PAREN") + && !last.is("RIGHT_BRACKET") + ) + ) + ) + ) { + var regex = stream.next(); + + while (!stream.look().eof) { + if (stream.look() == "\\") { // escape sequence + regex += stream.next(2); + } + else if (stream.look() == "/") { + regex += stream.next(); + + while (/[gmi]/.test(stream.look())) { + regex += stream.next(); + } + + tokens.push(new JSDOC.Token(regex, "REGX", "REGX")); + return true; + } + else { + regex += stream.next(); + } + } + // error: unterminated regex + } + return false; +}