update grammar for latest jison

lib/jsonlint.js

@@ -9,7 +9,7 @@ performAction: function anonymous(yytext,yyleng,yylineno,yy,yystate,$$,_$) {
 
 var $0 = $$.length - 1;
 switch (yystate) {
-case 1:this.$ = yytext;
+case 1:this.$ = yytext.replace(/\\\\/g, "\\");
 break;
 case 2:this.$ = Number(yytext);
 break;
@@ -86,7 +86,7 @@ parse: function parse(input) {
             token = self.symbols_[token] || token;
         }
         return token;
-    };
+    }
 
     var symbol, preErrorSymbol, state, action, a, r, yyval={},p,len,newState, expected;
     while (true) {
@@ -104,6 +104,7 @@ parse: function parse(input) {
         }
 
         // handle parse error
+        _handle_error:
         if (typeof action === 'undefined' || !action.length || !action[0]) {
 
             if (!recovering) {
@@ -114,7 +115,7 @@ parse: function parse(input) {
                 }
                 var errStr = '';
                 if (this.lexer.showPosition) {
-                    errStr = 'Parse error on line '+(yylineno+1)+":\n"+this.lexer.showPosition()+'\nExpecting '+expected.join(', ');
+                    errStr = 'Parse error on line '+(yylineno+1)+":\n"+this.lexer.showPosition()+"\nExpecting "+expected.join(', ') + ", got '" + this.terminals_[symbol]+ "'";
                 } else {
                     errStr = 'Parse error on line '+(yylineno+1)+": Unexpected " +
                                   (symbol == 1 /*EOF*/ ? "end of input" :
@@ -228,8 +229,10 @@ parse: function parse(input) {
     }
 
     return true;
-}};/* Jison generated lexer */
-var lexer = (function(){var lexer = ({EOF:1,
+}};
+/* Jison generated lexer */
+var lexer = (function(){
+var lexer = ({EOF:1,
 parseError:function parseError(str, hash) {
         if (this.yy.parseError) {
             this.yy.parseError(str, hash);
@@ -265,6 +268,9 @@ more:function () {
         this._more = true;
         return this;
     },
+less:function (n) {
+        this._input = this.match.slice(n) + this._input;
+    },
 pastInput:function () {
         var past = this.matched.substr(0, this.matched.length - this.match.length);
         return (past.length > 20 ? '...':'') + past.substr(-20).replace(/\n/g, "");
@@ -289,6 +295,8 @@ next:function () {
 
         var token,
             match,
+            tempMatch,
+            index,
             col,
             lines;
         if (!this._more) {
@@ -297,7 +305,13 @@ next:function () {
         }
         var rules = this._currentRules();
         for (var i=0;i < rules.length; i++) {
-            match = this._input.match(this.rules[rules[i]]);
+            tempMatch = this._input.match(this.rules[rules[i]]);
+            if (tempMatch && (!match || tempMatch[0].length > match[0].length)) {
+                match = tempMatch;
+                index = i;
+                if (!this.options.flex) break;
+            }
+        }
         if (match) {
             lines = match[0].match(/\n.*/g);
             if (lines) this.yylineno += lines.length;
@@ -307,16 +321,15 @@ next:function () {
                            last_column: lines ? lines[lines.length-1].length-1 : this.yylloc.last_column + match[0].length}
             this.yytext += match[0];
             this.match += match[0];
-                this.matches = match;
             this.yyleng = this.yytext.length;
             this._more = false;
             this._input = this._input.slice(match[0].length);
             this.matched += match[0];
-                token = this.performAction.call(this, this.yy, this, rules[i],this.conditionStack[this.conditionStack.length-1]);
+            token = this.performAction.call(this, this.yy, this, rules[index],this.conditionStack[this.conditionStack.length-1]);
+            if (this.done && this._input) this.done = false;
             if (token) return token;
             else return;
         }
-        }
         if (this._input === "") {
             return this.EOF;
         } else {
@@ -340,7 +353,14 @@ popState:function popState() {
     },
 _currentRules:function _currentRules() {
         return this.conditions[this.conditionStack[this.conditionStack.length-1]].rules;
+    },
+topState:function () {
+        return this.conditionStack[this.conditionStack.length-2];
+    },
+pushState:function begin(condition) {
+        this.begin(condition);
     }});
+lexer.options = {};
 lexer.performAction = function anonymous(yy,yy_,$avoiding_name_collisions,YY_START) {
 
 var YYSTATE=YY_START
@@ -375,8 +395,12 @@ case 13:return 'INVALID'
 break;
 }
 };
-lexer.rules = [/^\s+/,/^-?([0-9]|[1-9][0-9]+)(\.[0-9]+)?([eE][-+]?[0-9]+)?\b/,/^"(\\["bfnrt/\\]|\\u[a-fA-F0-9]{4}|[^\0-\x09\x0a-\x1f"\\])*"/,/^\{/,/^\}/,/^\[/,/^\]/,/^,/,/^:/,/^true\b/,/^false\b/,/^null\b/,/^$/,/^./];
-lexer.conditions = {"INITIAL":{"rules":[0,1,2,3,4,5,6,7,8,9,10,11,12,13],"inclusive":true}};return lexer;})()
+lexer.rules = [/^(?:\s+)/,/^(?:(-?([0-9]|[1-9][0-9]+))(\.[0-9]+)?([eE][-+]?[0-9]+)?\b)/,/^(?:"(?:\\[\\"bfnrt/]|\\u[a-fA-F0-9]{4}|[^\\\0-\x09\x0a-\x1f"])*")/,/^(?:\{)/,/^(?:\})/,/^(?:\[)/,/^(?:\])/,/^(?:,)/,/^(?::)/,/^(?:true\b)/,/^(?:false\b)/,/^(?:null\b)/,/^(?:$)/,/^(?:.)/];
+lexer.conditions = {"INITIAL":{"rules":[0,1,2,3,4,5,6,7,8,9,10,11,12,13],"inclusive":true}};
+
+
+;
+return lexer;})()
 parser.lexer = lexer;
 return parser;
 })();

src/jsonlint.l

@@ -1,23 +1,24 @@
-esc  "\\"
 int  "-"?([0-9]|[1-9][0-9]+)
-exp  ([eE][-+]?[0-9]+)
-frac  ("."[0-9]+)
+exp  [eE][-+]?[0-9]+
+frac  "."[0-9]+
 
 %%
-\s+    {/* skip whitespace */}
-{int}{frac}?{exp}?\b    {return 'NUMBER';}
-'"'("\\"["bfnrt/{esc}]|"\\u"[a-fA-F0-9]{4}|[^\0-\x09\x0a-\x1f"{esc}])*'"'    {yytext = yytext.substr(1,yyleng-2); return 'STRING';}
-"{"    %{ return '{' %}
-"}"    %{ return '}' %}
-"["    {return '['}
-"]"    {return ']'}
-","    {return ','}
-":"    {return ':'}
-"true"    {return 'TRUE'}
-"false"    {return 'FALSE'}
-"null"    {return 'NULL'}
-<<EOF>>    {return 'EOF'}
-.    {return 'INVALID'}
+\s+      /* skip whitespace */
+
+{int}{frac}?{exp}?\b    return 'NUMBER'
+\"(?:'\\'[\\"bfnrt/]|'\\u'[a-fA-F0-9]{4}|[^\\\0-\x09\x0a-\x1f"])*\"    yytext = yytext.substr(1,yyleng-2); return 'STRING'
+
+"{"      return '{'
+"}"      return ''
+"["      return '['
+"]"      return ']'
+","      return ','
+":"      return ':'
+"true"   return 'TRUE'
+"false"  return 'FALSE'
+"null"   return 'NULL'
+<<EOF>>  return 'EOF'
+.        return 'INVALID'
 
 %%
 

src/jsonlint.y

@@ -1,13 +1,10 @@
+%start JSONText
+
 /*
   ECMA-262 5th Edition, 15.12.1 The JSON Grammar.
 */
 
 
-/* author: Zach Carter */
-
-
-%start JSONText
-
 %%
 
 JSONString