Implementing escape sequences support with the exception of "\0" ("<NUL>") character and cases that depend on Unicode support.

JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan [email protected]

Author: ruben-ayrapetyan

jerry-core/ecma/base/ecma-helpers-char.cpp

@@ -0,0 +1,68 @@
+/* Copyright 2015 Samsung Electronics Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/** \addtogroup ecma ECMA
+ * @{
+ *
+ * \addtogroup ecmahelpers Helpers for operations with ECMA characters
+ * @{
+ */
+
+#include "ecma-globals.h"
+#include "ecma-helpers.h"
+
+/**
+ * Check if specified character is the newline character
+ *
+ * @return true - if the character is "<LF>" character according to ECMA-262 v5, Table 3,
+ *         false - otherwise.
+ */
+bool
+ecma_char_is_new_line (ecma_char_t c) /**< character value */
+{
+  return (c == '\x0D');
+} /* ecma_char_is_new_line */
+
+/**
+ * Check if specified character the carriage return character
+ *
+ * @return true - if the character is "<CR>" character according to ECMA-262 v5, Table 3,
+ *         false - otherwise.
+ */
+bool
+ecma_char_is_carriage_return (ecma_char_t c) /**< character value */
+{
+  return (c == '\x0A');
+} /* ecma_char_is_carriage_return */
+
+/**
+ * Check if specified character is one of LineTerminator (ECMA-262 v5, Table 3) characters
+ *
+ * @return true - if the character is one of LineTerminator characters,
+ *         false - otherwise.
+ */
+bool
+ecma_char_is_line_terminator (ecma_char_t c) /**< character value */
+{
+  /* FIXME: Handle <LS> and <PS> (ECMA-262 v5, 7.3, Table 3) when Unicode would be supported */
+
+  return (ecma_char_is_carriage_return (c)
+          || ecma_char_is_new_line (c));
+} /* ecma_char_is_line_terminator */
+
+/**
+ * @}
+ * @}
+ */

jerry-core/ecma/base/ecma-helpers.h

@@ -313,6 +313,11 @@ extern ecma_number_t ecma_int32_to_number (int32_t value);
 extern ecma_number_t ecma_uint32_to_number (uint32_t value);
 extern ecma_length_t ecma_number_to_zt_string (ecma_number_t num, ecma_char_t *buffer_p, ssize_t buffer_size);
 
+/* ecma-helpers-char.cpp */
+extern bool ecma_char_is_new_line (ecma_char_t c);
+extern bool ecma_char_is_carriage_return (ecma_char_t c);
+extern bool ecma_char_is_line_terminator (ecma_char_t c);
+
 #endif /* !JERRY_ECMA_HELPERS_H */
 
 /**