fix glayzzle#58 - lexer unput after reaching end of stream

Author: Ioan CHIRIAC

dist/php-parser.js

@@ -3269,6 +3269,9 @@ lexer.prototype.lex = function() {
     this.yylloc.prev_line = this.yylloc.first_line;
     this.yylloc.prev_column = this.yylloc.first_column;
   }
+  /*else if (this.yylloc.prev_offset === this.offset && this.offset !== this.size) {
+    throw new Error('Infinite loop @ ' + this.offset + ' / ' + this.size);
+  }*/
   return token;
 };
 
@@ -3332,11 +3335,13 @@ lexer.prototype.next = function () {
     } else {
       tName = '"'+tName+'"';
     }
-    console.log(
-      tName,
-      'from ' + this.yylloc.first_line + ',' + this.yylloc.first_column,
-      ' - to ' + this.yylloc.last_line + ',' + this.yylloc.last_column
+    var e = new Error(
+      tName +
+      '\tfrom ' + this.yylloc.first_line + ',' + this.yylloc.first_column +
+      '\t - to ' + this.yylloc.last_line + ',' + this.yylloc.last_column +
+      '\t"'+this.yytext+'"'
     );
+    console.log(e.stack);
   }
   return token;
 };
@@ -4228,7 +4233,7 @@ module.exports = {
             return this.ST_DOUBLE_QUOTES();
           } else if (ch === '\'') {
             return this.T_CONSTANT_ENCAPSED_STRING();
-          } else {
+          } else if (ch) {
             this.unput(1);
           }
         }