--- /dev/null
+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;
+}
projects / dygraphs.git / blobdiff