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https://github.com/jerryscript-project/jerryscript.git
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51e3c4455a
Direct strings are a new type of direct ecma-values (no memory allocation is needed for encoding them) in JerryScript. Currently magic strings, external magic strings and uint values are encoded as direct strings. The constant pool of JerryScript byte-code is changed to hold ecma-values rather than cpointers to support direct strings. JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
136 lines
3.1 KiB
C
136 lines
3.1 KiB
C
/* Copyright JS Foundation and other contributors, http://js.foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "common.h"
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#include "ecma-helpers.h"
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#ifndef JERRY_DISABLE_JS_PARSER
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/** \addtogroup parser Parser
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* @{
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*
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* \addtogroup jsparser JavaScript
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* @{
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*
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* \addtogroup jsparser_utils Utility
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* @{
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*/
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/**
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* Free literal.
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*/
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void
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util_free_literal (lexer_literal_t *literal_p) /**< literal */
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{
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if (literal_p->type == LEXER_IDENT_LITERAL
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|| literal_p->type == LEXER_STRING_LITERAL)
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{
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if (!(literal_p->status_flags & LEXER_FLAG_SOURCE_PTR))
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{
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jmem_heap_free_block ((void *) literal_p->u.char_p, literal_p->prop.length);
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}
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}
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else if ((literal_p->type == LEXER_FUNCTION_LITERAL)
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|| (literal_p->type == LEXER_REGEXP_LITERAL))
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{
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ecma_bytecode_deref (literal_p->u.bytecode_p);
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}
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} /* util_free_literal */
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#ifdef PARSER_DUMP_BYTE_CODE
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/**
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* Debug utility to print a character sequence.
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*/
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static void
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util_print_chars (const uint8_t *char_p, /**< character pointer */
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size_t size) /**< size */
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{
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while (size > 0)
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{
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JERRY_DEBUG_MSG ("%c", *char_p++);
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size--;
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}
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} /* util_print_chars */
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/**
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* Debug utility to print a number.
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*/
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static void
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util_print_number (ecma_number_t num_p) /**< number to print */
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{
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lit_utf8_byte_t str_buf[ECMA_MAX_CHARS_IN_STRINGIFIED_NUMBER];
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lit_utf8_size_t str_size = ecma_number_to_utf8_string (num_p, str_buf, sizeof (str_buf));
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str_buf[str_size] = 0;
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JERRY_DEBUG_MSG ("%s", str_buf);
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} /* util_print_number */
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/**
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* Print literal.
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*/
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void
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util_print_literal (lexer_literal_t *literal_p) /**< literal */
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{
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if (literal_p->type == LEXER_IDENT_LITERAL)
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{
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if (literal_p->status_flags & LEXER_FLAG_VAR)
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{
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JERRY_DEBUG_MSG ("var_ident(");
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}
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else
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{
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JERRY_DEBUG_MSG ("ident(");
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}
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util_print_chars (literal_p->u.char_p, literal_p->prop.length);
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}
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else if (literal_p->type == LEXER_FUNCTION_LITERAL)
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{
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JERRY_DEBUG_MSG ("function");
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return;
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}
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else if (literal_p->type == LEXER_STRING_LITERAL)
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{
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JERRY_DEBUG_MSG ("string(");
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util_print_chars (literal_p->u.char_p, literal_p->prop.length);
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}
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else if (literal_p->type == LEXER_NUMBER_LITERAL)
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{
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JERRY_DEBUG_MSG ("number(");
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util_print_number (ecma_get_number_from_value (literal_p->u.value));
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}
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else if (literal_p->type == LEXER_REGEXP_LITERAL)
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{
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JERRY_DEBUG_MSG ("regexp");
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return;
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}
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else
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{
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JERRY_DEBUG_MSG ("unknown");
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return;
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}
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JERRY_DEBUG_MSG (")");
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} /* util_print_literal */
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#endif /* PARSER_DUMP_BYTE_CODE */
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/**
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* @}
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* @}
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* @}
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*/
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#endif /* !JERRY_DISABLE_JS_PARSER */
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