Node compatibility.

zaach · Feb 8, 2010 · 6bb038a · 6bb038a
1 parent 420c1d2
commit 6bb038a
Showing 1 changed file with 27 additions and 3 deletions.
diff --git a/lib/jison.js b/lib/jison.js
@@ -6,14 +6,23 @@ if (typeof exports === 'undefined') {
     exports = {};
 } else {
     // assume we're in commonjs land
-    var system = require("system");
+    //var system = require("system");
     var typal = require('./jison/util/typal').typal;
     var Set = require('./jison/util/set').Set;
     var RegExpLexer = require('./jison/lexer').RegExpLexer;
 }
 
 var Jison = exports.Jison = exports;
 
+// detect print
+if (typeof puts !== 'undefined') {
+    Jison.print = function print () { puts([].join.call(arguments, ' ')); };
+} else if (typeof print !== 'undefined') {
+    Jison.print = print;
+} else {
+    Jison.print = function print () {};
+}
+
 Jison.Parser = (function () {
 
 // iterator utility
@@ -288,7 +297,7 @@ generator.createParser = function createParser () {
 generator.trace = function trace () { };
 
 generator.warn = function warn () {
-    print.apply(null,arguments);
+    Jison.print.apply(null,arguments);
 };
 
 generator.error = function error (msg) {
@@ -299,7 +308,7 @@ generator.error = function error (msg) {
 
 var generatorDebug = {
     trace: function trace () {
-        print.apply(null, arguments);
+        Jison.print.apply(null, arguments);
     },
     beforeprocessGrammar: function () {
         this.trace("Processing grammar.");
@@ -1168,6 +1177,21 @@ var lalr = generator.beget(lookaheadMixin, lrGeneratorMixin, {
 
 var LALRGenerator = exports.LALRGenerator = lalr.construct();
 
+// LALR generator debug mixin
+
+var lalrGeneratorDebug = {
+    trace: function trace () {
+        Jison.print.apply(null, arguments);
+    },
+    beforebuildNewGrammar: function () {
+        this.trace(this.states.size()+" states.");
+        this.trace("Building lookahead grammar.");
+    },
+    beforeunionLookaheads: function () {
+        this.trace("Computing lookaheads.");
+    }
+};
+
 /* 
  * Lookahead parser definitions
  *