Enable regular expressions.

- add regular expressions support to JS parser and interpreter;
- add tests for regular expressions.

JerryScript-DCO-1.0-Signed-off-by: Szilard Ledan szledan.u-szeged@partner.samsung.com
JerryScript-DCO-1.0-Signed-off-by: László Langó llango.u-szeged@partner.samsung.com

jerry-core/parser/js/parser.cpp

@@ -1,4 +1,5 @@
 /* Copyright 2014-2015 Samsung Electronics Co., Ltd.
+ * Copyright 2015 University of Szeged.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -22,6 +23,7 @@
 #include "opcodes-dumper.h"
 #include "opcodes-native-call.h"
 #include "parser.h"
+#include "re-parser.h"
 #include "scopes-tree.h"
 #include "serializer.h"
 #include "stack.h"
@@ -745,6 +747,7 @@ parse_object_literal (void)
   | 'false'
   | number_literal
   | string_literal
+  | regexp_literal
   ; */
 static operand
 parse_literal (void)
@@ -753,6 +756,7 @@ parse_literal (void)
   {
     case TOK_NUMBER: return dump_number_assignment_res (token_data_as_lit_cp ());
     case TOK_STRING: return dump_string_assignment_res (token_data_as_lit_cp ());
+    case TOK_REGEXP: return dump_regexp_assignment_res (token_data_as_lit_cp ());
     case TOK_NULL: return dump_null_assignment_res ();
     case TOK_BOOL: return dump_boolean_assignment_res ((bool) token_data ());
     case TOK_SMALL_INT: return dump_smallint_assignment_res ((idx_t) token_data ());
@@ -786,6 +790,7 @@ parse_primary_expression (void)
     case TOK_BOOL:
     case TOK_SMALL_INT:
     case TOK_NUMBER:
+    case TOK_REGEXP:
     case TOK_STRING: return parse_literal ();
     case TOK_NAME: return literal_operand (token_data_as_lit_cp ());
     case TOK_OPEN_SQUARE: return parse_array_literal ();