mirror of
https://github.com/jerryscript-project/jerryscript.git
synced 2025-12-15 16:29:21 +00:00
322265bfb9
`obj[number]` is a widely used structure especially for array element indexing, however super property assignment is not. This patch moves super-assignment opcodes to ext opcodes and fills the freed 3 basic opcodes with push-literal-number ones. JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik robert.fancsik@h-lab.eu
556 lines
14 KiB
C
556 lines
14 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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#include "ecma-big-uint.h"
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#include "ecma-bigint.h"
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#include "js-parser-internal.h"
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#include "lit-char-helpers.h"
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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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#if JERRY_PARSER
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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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#endif /* JERRY_PARSER */
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#if JERRY_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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#if JERRY_BUILTIN_BIGINT
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/**
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* Debug utility to print a bigint.
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*/
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static void
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util_print_bigint (ecma_value_t bigint) /**< bigint to print */
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{
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if (bigint == ECMA_BIGINT_ZERO)
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{
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JERRY_DEBUG_MSG ("0");
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return;
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}
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ecma_extended_primitive_t *bigint_p = ecma_get_extended_primitive_from_value (bigint);
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uint32_t char_start_p, char_size_p;
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lit_utf8_byte_t *string_buffer_p = ecma_big_uint_to_string (bigint_p, 10, &char_start_p, &char_size_p);
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if (JERRY_UNLIKELY (string_buffer_p == NULL))
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{
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JERRY_DEBUG_MSG ("<out-of-memory>");
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return;
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}
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JERRY_ASSERT (char_start_p > 0);
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if (bigint_p->u.bigint_sign_and_size & ECMA_BIGINT_SIGN)
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{
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string_buffer_p[--char_start_p] = LIT_CHAR_MINUS;
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}
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util_print_chars (string_buffer_p + char_start_p, char_size_p - char_start_p);
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jmem_heap_free_block (string_buffer_p, char_size_p);
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} /* util_print_bigint */
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#endif /* JERRY_BUILTIN_BIGINT */
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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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switch (literal_p->type)
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{
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case LEXER_IDENT_LITERAL:
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{
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JERRY_DEBUG_MSG ("ident(");
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util_print_chars (literal_p->u.char_p, literal_p->prop.length);
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break;
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}
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case 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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case 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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break;
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}
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case LEXER_NUMBER_LITERAL:
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{
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#if JERRY_BUILTIN_BIGINT
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if (ecma_is_value_bigint (literal_p->u.value))
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{
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JERRY_DEBUG_MSG ("bigint(");
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util_print_bigint (literal_p->u.value);
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break;
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}
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#endif /* JERRY_BUILTIN_BIGINT */
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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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break;
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}
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case 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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default:
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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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}
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JERRY_DEBUG_MSG (")");
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} /* util_print_literal */
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/**
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* Print literal.
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*/
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static void
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util_print_literal_value (ecma_compiled_code_t *compiled_code_p, /**< compiled code */
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uint16_t literal_index) /**< literal index */
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{
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uint16_t argument_end;
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uint16_t register_end;
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uint16_t ident_end;
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uint16_t const_literal_end;
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ecma_value_t *literal_start_p;
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if (compiled_code_p->status_flags & CBC_CODE_FLAGS_UINT16_ARGUMENTS)
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{
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cbc_uint16_arguments_t *args_p = (cbc_uint16_arguments_t *) compiled_code_p;
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argument_end = args_p->argument_end;
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register_end = args_p->register_end;
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ident_end = args_p->ident_end;
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const_literal_end = args_p->const_literal_end;
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literal_start_p = (ecma_value_t *) (args_p + 1);
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}
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else
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{
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cbc_uint8_arguments_t *args_p = (cbc_uint8_arguments_t *) compiled_code_p;
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argument_end = args_p->argument_end;
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register_end = args_p->register_end;
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ident_end = args_p->ident_end;
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const_literal_end = args_p->const_literal_end;
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literal_start_p = (ecma_value_t *) (args_p + 1);
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}
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if (literal_index < argument_end)
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{
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JERRY_DEBUG_MSG (" arg:%d", literal_index);
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return;
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}
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if (literal_index < register_end)
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{
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JERRY_DEBUG_MSG (" reg:%d", literal_index);
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return;
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}
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if (literal_index >= const_literal_end)
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{
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JERRY_DEBUG_MSG (" lit:%d", literal_index);
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return;
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}
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if (literal_index < ident_end)
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{
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JERRY_DEBUG_MSG (" ident:%d->", literal_index);
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}
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else
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{
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JERRY_DEBUG_MSG (" const:%d->", literal_index);
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}
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ecma_value_t value = literal_start_p[literal_index - register_end];
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if (ecma_is_value_number (value))
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{
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JERRY_DEBUG_MSG ("number(");
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util_print_number (ecma_get_number_from_value (value));
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}
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#if JERRY_BUILTIN_BIGINT
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else if (ecma_is_value_bigint (value))
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{
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JERRY_DEBUG_MSG ("bigint(");
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util_print_bigint (value);
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}
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#endif /* JERRY_BUILTIN_BIGINT */
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else
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{
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ecma_string_t *literal_p = ecma_get_string_from_value (value);
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JERRY_DEBUG_MSG ("string(");
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ECMA_STRING_TO_UTF8_STRING (literal_p, chars_p, literal_size);
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util_print_chars (chars_p, literal_size);
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ECMA_FINALIZE_UTF8_STRING (chars_p, literal_size);
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}
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JERRY_DEBUG_MSG (")");
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} /* util_print_literal_value */
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#define PARSER_READ_IDENTIFIER_INDEX(name) \
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name = *byte_code_p++; \
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if (name >= encoding_limit) \
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{ \
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name = (uint16_t) (((name << 8) | byte_code_p[0]) - encoding_delta); \
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byte_code_p++; \
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}
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/**
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* Print byte code.
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*/
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void
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util_print_cbc (ecma_compiled_code_t *compiled_code_p) /**< compiled code */
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{
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uint8_t flags;
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uint8_t *byte_code_start_p;
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uint8_t *byte_code_end_p;
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uint8_t *byte_code_p;
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uint16_t encoding_limit;
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uint16_t encoding_delta;
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uint16_t stack_limit;
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uint16_t argument_end;
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uint16_t register_end;
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uint16_t ident_end;
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uint16_t const_literal_end;
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uint16_t literal_end;
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size_t size = ((size_t) compiled_code_p->size) << JMEM_ALIGNMENT_LOG;
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if (compiled_code_p->status_flags & CBC_CODE_FLAGS_UINT16_ARGUMENTS)
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{
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cbc_uint16_arguments_t *args = (cbc_uint16_arguments_t *) compiled_code_p;
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stack_limit = args->stack_limit;
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argument_end = args->argument_end;
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register_end = args->register_end;
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ident_end = args->ident_end;
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const_literal_end = args->const_literal_end;
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literal_end = args->literal_end;
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}
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else
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{
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cbc_uint8_arguments_t *args = (cbc_uint8_arguments_t *) compiled_code_p;
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stack_limit = args->stack_limit;
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argument_end = args->argument_end;
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register_end = args->register_end;
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ident_end = args->ident_end;
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const_literal_end = args->const_literal_end;
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literal_end = args->literal_end;
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}
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JERRY_DEBUG_MSG ("\nByte code dump:\n\n Maximum stack depth: %d\n Flags: [",
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(int) (stack_limit + register_end));
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if (!(compiled_code_p->status_flags & CBC_CODE_FLAGS_FULL_LITERAL_ENCODING))
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{
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JERRY_DEBUG_MSG ("small_lit_enc");
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encoding_limit = CBC_SMALL_LITERAL_ENCODING_LIMIT;
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encoding_delta = CBC_SMALL_LITERAL_ENCODING_DELTA;
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}
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else
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{
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JERRY_DEBUG_MSG ("full_lit_enc");
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encoding_limit = CBC_FULL_LITERAL_ENCODING_LIMIT;
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encoding_delta = CBC_FULL_LITERAL_ENCODING_DELTA;
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}
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if (compiled_code_p->status_flags & CBC_CODE_FLAGS_UINT16_ARGUMENTS)
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{
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JERRY_DEBUG_MSG (",uint16_arguments");
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}
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if (compiled_code_p->status_flags & CBC_CODE_FLAGS_STRICT_MODE)
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{
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JERRY_DEBUG_MSG (",strict_mode");
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}
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if (compiled_code_p->status_flags & CBC_CODE_FLAGS_MAPPED_ARGUMENTS_NEEDED)
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{
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JERRY_DEBUG_MSG (",mapped_arguments_needed");
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size -= argument_end * sizeof (ecma_value_t);
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}
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if (compiled_code_p->status_flags & CBC_CODE_FLAGS_LEXICAL_ENV_NOT_NEEDED)
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{
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JERRY_DEBUG_MSG (",no_lexical_env");
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}
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#if JERRY_ESNEXT
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switch (CBC_FUNCTION_GET_TYPE (compiled_code_p->status_flags))
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{
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case CBC_FUNCTION_CONSTRUCTOR:
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{
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JERRY_DEBUG_MSG (",constructor");
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break;
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}
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case CBC_FUNCTION_GENERATOR:
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{
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JERRY_DEBUG_MSG (",generator");
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break;
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}
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case CBC_FUNCTION_ASYNC:
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{
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JERRY_DEBUG_MSG (",async");
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break;
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}
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case CBC_FUNCTION_ASYNC_GENERATOR:
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{
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JERRY_DEBUG_MSG (",async_generator");
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break;
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}
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case CBC_FUNCTION_ACCESSOR:
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{
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JERRY_DEBUG_MSG (",accessor");
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break;
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}
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case CBC_FUNCTION_ARROW:
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{
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JERRY_DEBUG_MSG (",arrow");
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break;
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}
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case CBC_FUNCTION_ASYNC_ARROW:
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{
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JERRY_DEBUG_MSG (",async_arrow");
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break;
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}
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}
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#endif /* JERRY_ESNEXT */
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JERRY_DEBUG_MSG ("]\n");
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JERRY_DEBUG_MSG (" Argument range end: %d\n", (int) argument_end);
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JERRY_DEBUG_MSG (" Register range end: %d\n", (int) register_end);
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JERRY_DEBUG_MSG (" Identifier range end: %d\n", (int) ident_end);
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JERRY_DEBUG_MSG (" Const literal range end: %d\n", (int) const_literal_end);
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JERRY_DEBUG_MSG (" Literal range end: %d\n\n", (int) literal_end);
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#if JERRY_ESNEXT
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if (compiled_code_p->status_flags & CBC_CODE_FLAGS_HAS_EXTENDED_INFO)
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{
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uint32_t extended_info = ecma_compiled_code_resolve_extended_info (compiled_code_p);
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JERRY_DEBUG_MSG (" [Extended] Argument length: %d\n\n", (int) CBC_EXTENDED_INFO_GET_LENGTH (extended_info));
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size -= sizeof (ecma_value_t);
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}
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#endif /* JERRY_ESNEXT */
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byte_code_start_p = (uint8_t *) compiled_code_p;
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if (compiled_code_p->status_flags & CBC_CODE_FLAGS_UINT16_ARGUMENTS)
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{
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byte_code_start_p += sizeof (cbc_uint16_arguments_t);
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}
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else
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{
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byte_code_start_p += sizeof (cbc_uint8_arguments_t);
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}
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byte_code_start_p += (unsigned int) (literal_end - register_end) * sizeof (ecma_value_t);
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if (CBC_FUNCTION_GET_TYPE (compiled_code_p->status_flags) != CBC_FUNCTION_CONSTRUCTOR)
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{
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size -= sizeof (ecma_value_t);
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}
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if (compiled_code_p->status_flags & CBC_CODE_FLAGS_HAS_TAGGED_LITERALS)
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{
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size -= sizeof (ecma_value_t);
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}
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byte_code_end_p = ((uint8_t *) compiled_code_p) + size;
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byte_code_p = byte_code_start_p;
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while (byte_code_p < byte_code_end_p)
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{
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cbc_opcode_t opcode = (cbc_opcode_t) *byte_code_p;
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cbc_ext_opcode_t ext_opcode = CBC_EXT_NOP;
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size_t cbc_offset = (size_t) (byte_code_p - byte_code_start_p);
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if (opcode != CBC_EXT_OPCODE)
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{
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flags = cbc_flags[opcode];
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JERRY_DEBUG_MSG (" %3d : %s", (int) cbc_offset, cbc_names[opcode]);
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byte_code_p++;
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}
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else
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{
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if (byte_code_p + 1 >= byte_code_end_p)
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{
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break;
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}
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ext_opcode = (cbc_ext_opcode_t) byte_code_p[1];
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if (ext_opcode == CBC_EXT_NOP)
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{
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break;
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}
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flags = cbc_ext_flags[ext_opcode];
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JERRY_DEBUG_MSG (" %3d : %s", (int) cbc_offset, cbc_ext_names[ext_opcode]);
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byte_code_p += 2;
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#if JERRY_LINE_INFO
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if (ext_opcode == CBC_EXT_LINE)
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{
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uint32_t value = 0;
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uint8_t byte;
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do
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{
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byte = *byte_code_p++;
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value = (value << 7) | (byte & CBC_LOWER_SEVEN_BIT_MASK);
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}
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while (byte & CBC_HIGHEST_BIT_MASK);
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JERRY_DEBUG_MSG (" %d\n", (int) value);
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continue;
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}
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#endif /* JERRY_LINE_INFO */
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}
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if (flags & (CBC_HAS_LITERAL_ARG | CBC_HAS_LITERAL_ARG2))
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{
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uint16_t literal_index;
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PARSER_READ_IDENTIFIER_INDEX (literal_index);
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util_print_literal_value (compiled_code_p, literal_index);
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}
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if (flags & CBC_HAS_LITERAL_ARG2)
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{
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uint16_t literal_index;
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PARSER_READ_IDENTIFIER_INDEX (literal_index);
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util_print_literal_value (compiled_code_p, literal_index);
|
|
|
|
if (!(flags & CBC_HAS_LITERAL_ARG))
|
|
{
|
|
PARSER_READ_IDENTIFIER_INDEX (literal_index);
|
|
util_print_literal_value (compiled_code_p, literal_index);
|
|
}
|
|
}
|
|
|
|
if (flags & CBC_HAS_BYTE_ARG)
|
|
{
|
|
if (opcode == CBC_PUSH_NUMBER_POS_BYTE
|
|
|| opcode == CBC_PUSH_LITERAL_PUSH_NUMBER_POS_BYTE)
|
|
{
|
|
JERRY_DEBUG_MSG (" number:%d", (int) *byte_code_p + 1);
|
|
}
|
|
else if (opcode == CBC_PUSH_NUMBER_NEG_BYTE
|
|
|| opcode == CBC_PUSH_LITERAL_PUSH_NUMBER_NEG_BYTE)
|
|
{
|
|
JERRY_DEBUG_MSG (" number:%d", -((int) *byte_code_p + 1));
|
|
}
|
|
else
|
|
{
|
|
JERRY_DEBUG_MSG (" byte_arg:%d", *byte_code_p);
|
|
}
|
|
byte_code_p++;
|
|
}
|
|
|
|
if (flags & CBC_HAS_BRANCH_ARG)
|
|
{
|
|
size_t branch_offset_length = (opcode != CBC_EXT_OPCODE ? CBC_BRANCH_OFFSET_LENGTH (opcode)
|
|
: CBC_BRANCH_OFFSET_LENGTH (ext_opcode));
|
|
size_t offset = 0;
|
|
|
|
do
|
|
{
|
|
offset = (offset << 8) | *byte_code_p++;
|
|
}
|
|
while (--branch_offset_length > 0);
|
|
|
|
JERRY_DEBUG_MSG (" offset:%d(->%d)",
|
|
(int) offset,
|
|
(int) (cbc_offset + (CBC_BRANCH_IS_FORWARD (flags) ? offset : -offset)));
|
|
}
|
|
|
|
JERRY_DEBUG_MSG ("\n");
|
|
}
|
|
} /* util_print_cbc */
|
|
|
|
#undef PARSER_READ_IDENTIFIER_INDEX
|
|
|
|
#endif /* JERRY_PARSER_DUMP_BYTE_CODE */
|
|
|
|
/**
|
|
* @}
|
|
* @}
|
|
* @}
|
|
*/
|