Generate parser error messages (#4836)

Support parser error messages generation in tools/gen-strings.py.

JerryScript-DCO-1.0-Signed-off-by: Csaba Repasi repasics@inf.u-szeged.hu

jerry-core/parser/js/parser-errors.c

@@ -0,0 +1,71 @@
+/* Copyright JS Foundation and other contributors, http://js.foundation
+ *
+ * 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.
+ */
+
+#include "parser-errors.h"
+
+#if JERRY_ERROR_MESSAGES
+/**
+ * Struct to store parser error message with its size.
+ */
+typedef struct
+{
+  lit_utf8_byte_t *text; /* Text of parser error message. */
+  uint8_t size; /* Size of parser error message. */
+} parser_error_message_t;
+
+/* Error message texts with size. */
+static parser_error_message_t parser_error_messages[] JERRY_ATTR_CONST_DATA = {
+  { (lit_utf8_byte_t *) "", 0 }, /* PARSER_ERR_EMPTY */
+/** @cond doxygen_suppress */
+#define PARSER_ERROR_DEF(id, utf8_string) { (lit_utf8_byte_t *) utf8_string, sizeof (utf8_string) - 1 },
+#include "parser-error-messages.inc.h"
+#undef PARSER_ERROR_DEF
+  /** @endcond */
+};
+#endif /* JERRY_ERROR_MESSAGES */
+
+/**
+ * Get specified parser error as zero-terminated string
+ *
+ * @return pointer to zero-terminated parser error
+ */
+const lit_utf8_byte_t *
+parser_get_error_utf8 (uint32_t id) /**< parser error id */
+{
+  JERRY_ASSERT (id < PARSER_ERR_OUT_OF_MEMORY);
+
+#if JERRY_ERROR_MESSAGES
+  return parser_error_messages[id].text;
+#else /* !JERRY_ERROR_MESSAGES */
+  return NULL;
+#endif /* JERRY_ERROR_MESSAGES */
+} /* parser_get_error_utf8 */
+
+/**
+ * Get size of specified parser error
+ *
+ * @return size in bytes
+ */
+lit_utf8_size_t
+parser_get_error_size (uint32_t id) /**< parser error id */
+{
+  JERRY_ASSERT (id < PARSER_ERR_OUT_OF_MEMORY);
+
+#if JERRY_ERROR_MESSAGES
+  return parser_error_messages[id].size;
+#else /* !JERRY_ERROR_MESSAGES */
+  return 0;
+#endif /* JERRY_ERROR_MESSAGES */
+} /* parser_get_error_size */