mirror of
https://github.com/jerryscript-project/jerryscript.git
synced 2025-12-15 16:29:21 +00:00
6f339eb05c
New api function: * jerry_get_error_type Additionally update a few places where this new function can be used. JerryScript-DCO-1.0-Signed-off-by: Peter Gal pgal.u-szeged@partner.samsung.com
526 lines
13 KiB
C
526 lines
13 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 <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "jerryscript.h"
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#include "jerryscript-ext/handler.h"
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#include "jerryscript-port.h"
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#include "setjmp.h"
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/**
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* Maximum command line arguments number.
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*/
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#define JERRY_MAX_COMMAND_LINE_ARGS (16)
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/**
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* Standalone Jerry exit codes.
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*/
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#define JERRY_STANDALONE_EXIT_CODE_OK (0)
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#define JERRY_STANDALONE_EXIT_CODE_FAIL (1)
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/**
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* Context size of the SYNTAX_ERROR
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*/
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#define SYNTAX_ERROR_CONTEXT_SIZE 2
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/**
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* Print usage and available options
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*/
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static void
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print_help (char *name)
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{
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printf ("Usage: %s [OPTION]... [FILE]...\n"
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"\n"
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"Options:\n"
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" --log-level [0-3]\n"
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" --mem-stats\n"
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" --mem-stats-separate\n"
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" --show-opcodes\n"
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" --start-debug-server\n"
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" --debug-server-port [port]\n"
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"\n",
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name);
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} /* print_help */
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/**
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* Read source code into buffer.
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*
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* Returned value must be freed with jmem_heap_free_block if it's not NULL.
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* @return NULL, if read or allocation has failed
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* pointer to the allocated memory block, otherwise
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*/
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static const uint8_t *
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read_file (const char *file_name, /**< source code */
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size_t *out_size_p) /**< [out] number of bytes successfully read from source */
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{
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FILE *file = fopen (file_name, "r");
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if (file == NULL)
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{
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jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Error: cannot open file: %s\n", file_name);
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return NULL;
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}
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int fseek_status = fseek (file, 0, SEEK_END);
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if (fseek_status != 0)
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{
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jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Failed to seek (error: %d)\n", fseek_status);
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fclose (file);
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return NULL;
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}
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long script_len = ftell (file);
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if (script_len < 0)
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{
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jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Failed to get the file size(error %ld)\n", script_len);
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fclose (file);
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return NULL;
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}
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rewind (file);
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uint8_t *buffer = (uint8_t *) malloc (script_len);
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if (buffer == NULL)
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{
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jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Out of memory error\n");
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fclose (file);
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return NULL;
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}
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size_t bytes_read = fread (buffer, 1u, script_len, file);
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if (!bytes_read || bytes_read != script_len)
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{
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jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Error: failed to read file: %s\n", file_name);
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free ((void*) buffer);
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fclose (file);
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return NULL;
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}
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fclose (file);
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*out_size_p = bytes_read;
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return (const uint8_t *) buffer;
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} /* read_file */
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/**
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* Convert string into unsigned integer
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*
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* @return converted number
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*/
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static uint32_t
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str_to_uint (const char *num_str_p) /**< string to convert */
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{
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assert (jerry_is_feature_enabled (JERRY_FEATURE_ERROR_MESSAGES));
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uint32_t result = 0;
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while (*num_str_p != '\0')
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{
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assert (*num_str_p >= '0' && *num_str_p <= '9');
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result *= 10;
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result += (uint32_t) (*num_str_p - '0');
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num_str_p++;
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}
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return result;
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} /* str_to_uint */
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/**
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* Print error value
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*/
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static void
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print_unhandled_exception (jerry_value_t error_value, /**< error value */
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const jerry_char_t *source_p) /**< source_p */
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{
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assert (jerry_value_has_error_flag (error_value));
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jerry_value_clear_error_flag (&error_value);
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jerry_value_t err_str_val = jerry_value_to_string (error_value);
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jerry_size_t err_str_size = jerry_get_string_size (err_str_val);
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jerry_char_t err_str_buf[256];
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if (err_str_size >= 256)
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{
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const char msg[] = "[Error message too long]";
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err_str_size = sizeof (msg) / sizeof (char) - 1;
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memcpy (err_str_buf, msg, err_str_size);
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}
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else
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{
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jerry_size_t sz = jerry_string_to_char_buffer (err_str_val, err_str_buf, err_str_size);
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assert (sz == err_str_size);
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err_str_buf[err_str_size] = 0;
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if (jerry_is_feature_enabled (JERRY_FEATURE_ERROR_MESSAGES)
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&& jerry_get_error_type (error_value) == JERRY_ERROR_SYNTAX)
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{
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uint32_t err_line = 0;
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uint32_t err_col = 0;
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/* 1. parse column and line information */
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for (uint32_t i = 0; i < sz; i++)
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{
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if (!strncmp ((char *) (err_str_buf + i), "[line: ", 7))
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{
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i += 7;
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char num_str[8];
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uint32_t j = 0;
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while (i < sz && err_str_buf[i] != ',')
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{
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num_str[j] = (char) err_str_buf[i];
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j++;
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i++;
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}
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num_str[j] = '\0';
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err_line = str_to_uint (num_str);
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if (strncmp ((char *) (err_str_buf + i), ", column: ", 10))
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{
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break; /* wrong position info format */
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}
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i += 10;
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j = 0;
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while (i < sz && err_str_buf[i] != ']')
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{
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num_str[j] = (char) err_str_buf[i];
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j++;
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i++;
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}
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num_str[j] = '\0';
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err_col = str_to_uint (num_str);
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break;
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}
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} /* for */
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if (err_line != 0 && err_col != 0)
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{
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uint32_t curr_line = 1;
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bool is_printing_context = false;
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uint32_t pos = 0;
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/* 2. seek and print */
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while (source_p[pos] != '\0')
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{
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if (source_p[pos] == '\n')
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{
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curr_line++;
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}
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if (err_line < SYNTAX_ERROR_CONTEXT_SIZE
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|| (err_line >= curr_line
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&& (err_line - curr_line) <= SYNTAX_ERROR_CONTEXT_SIZE))
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{
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/* context must be printed */
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is_printing_context = true;
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}
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if (curr_line > err_line)
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{
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break;
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}
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if (is_printing_context)
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{
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jerry_port_log (JERRY_LOG_LEVEL_ERROR, "%c", source_p[pos]);
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}
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pos++;
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}
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jerry_port_log (JERRY_LOG_LEVEL_ERROR, "\n");
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while (--err_col)
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{
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jerry_port_log (JERRY_LOG_LEVEL_ERROR, "~");
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}
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jerry_port_log (JERRY_LOG_LEVEL_ERROR, "^\n");
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}
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}
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}
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jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Script Error: %s\n", err_str_buf);
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jerry_release_value (err_str_val);
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} /* print_unhandled_exception */
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/**
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* Register a JavaScript function in the global object.
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*/
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static void
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register_js_function (const char *name_p, /**< name of the function */
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jerry_external_handler_t handler_p) /**< function callback */
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{
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jerry_value_t result_val = jerryx_handler_register_global ((const jerry_char_t *) name_p, handler_p);
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if (jerry_value_has_error_flag (result_val))
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{
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jerry_port_log (JERRY_LOG_LEVEL_WARNING, "Warning: failed to register '%s' method.", name_p);
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}
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jerry_release_value (result_val);
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} /* register_js_function */
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/**
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* JerryScript log level
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*/
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static jerry_log_level_t jerry_log_level = JERRY_LOG_LEVEL_ERROR;
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/**
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* Main program.
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*
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* @return 0 if success, error code otherwise
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*/
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#ifdef CONFIG_BUILD_KERNEL
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int main (int argc, FAR char *argv[])
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#else
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int jerry_main (int argc, char *argv[])
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#endif
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{
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if (argc > JERRY_MAX_COMMAND_LINE_ARGS)
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{
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jerry_port_log (JERRY_LOG_LEVEL_ERROR,
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"Too many command line arguments. Current maximum is %d\n",
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JERRY_MAX_COMMAND_LINE_ARGS);
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return JERRY_STANDALONE_EXIT_CODE_FAIL;
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}
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const char *file_names[JERRY_MAX_COMMAND_LINE_ARGS];
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int i;
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int files_counter = 0;
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bool start_debug_server = false;
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uint16_t debug_port = 5001;
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jerry_init_flag_t flags = JERRY_INIT_EMPTY;
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for (i = 1; i < argc; i++)
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{
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if (!strcmp ("-h", argv[i]) || !strcmp ("--help", argv[i]))
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{
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print_help (argv[0]);
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return JERRY_STANDALONE_EXIT_CODE_OK;
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}
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else if (!strcmp ("--mem-stats", argv[i]))
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{
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flags |= JERRY_INIT_MEM_STATS;
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jerry_log_level = JERRY_LOG_LEVEL_DEBUG;
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}
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else if (!strcmp ("--mem-stats-separate", argv[i]))
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{
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flags |= JERRY_INIT_MEM_STATS_SEPARATE;
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jerry_log_level = JERRY_LOG_LEVEL_DEBUG;
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}
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else if (!strcmp ("--show-opcodes", argv[i]))
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{
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flags |= JERRY_INIT_SHOW_OPCODES | JERRY_INIT_SHOW_REGEXP_OPCODES;
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jerry_log_level = JERRY_LOG_LEVEL_DEBUG;
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}
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else if (!strcmp ("--log-level", argv[i]))
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{
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if (++i < argc && strlen (argv[i]) == 1 && argv[i][0] >='0' && argv[i][0] <= '3')
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{
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jerry_log_level = argv[i][0] - '0';
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}
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else
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{
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jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Error: wrong format or invalid argument\n");
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return JERRY_STANDALONE_EXIT_CODE_FAIL;
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}
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}
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else if (!strcmp ("--start-debug-server", argv[i]))
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{
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start_debug_server = true;
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}
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else if (!strcmp ("--debug-server-port", argv[i]))
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{
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if (++i < argc)
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{
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debug_port = str_to_uint (argv[i]);
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}
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else
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{
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jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Error: wrong format or invalid argument\n");
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return JERRY_STANDALONE_EXIT_CODE_FAIL;
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}
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}
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else
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{
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file_names[files_counter++] = argv[i];
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}
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}
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jerry_init (flags);
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if (start_debug_server)
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{
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jerry_debugger_init (debug_port);
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}
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register_js_function ("assert", jerryx_handler_assert);
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register_js_function ("gc", jerryx_handler_gc);
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register_js_function ("print", jerryx_handler_print);
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jerry_value_t ret_value = jerry_create_undefined ();
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if (files_counter == 0)
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{
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printf ("No input files, running a hello world demo:\n");
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const jerry_char_t script[] = "var str = 'Hello World'; print(str + ' from JerryScript')";
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size_t script_size = strlen ((const char *) script);
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ret_value = jerry_parse (script, script_size, false);
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if (!jerry_value_has_error_flag (ret_value))
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{
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ret_value = jerry_run (ret_value);
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}
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}
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else
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{
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for (i = 0; i < files_counter; i++)
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{
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size_t source_size;
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const jerry_char_t *source_p = read_file (file_names[i], &source_size);
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if (source_p == NULL)
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{
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jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Source file load error\n");
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return JERRY_STANDALONE_EXIT_CODE_FAIL;
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}
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ret_value = jerry_parse_named_resource ((jerry_char_t *) file_names[i],
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strlen (file_names[i]),
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source_p,
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source_size,
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false);
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if (!jerry_value_has_error_flag (ret_value))
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{
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jerry_value_t func_val = ret_value;
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ret_value = jerry_run (func_val);
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jerry_release_value (func_val);
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}
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if (jerry_value_has_error_flag (ret_value))
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{
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print_unhandled_exception (ret_value, source_p);
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free ((void*) source_p);
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break;
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}
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free ((void*) source_p);
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jerry_release_value (ret_value);
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ret_value = jerry_create_undefined ();
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}
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}
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int ret_code = JERRY_STANDALONE_EXIT_CODE_OK;
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if (jerry_value_has_error_flag (ret_value))
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{
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ret_code = JERRY_STANDALONE_EXIT_CODE_FAIL;
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}
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jerry_release_value (ret_value);
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ret_value = jerry_run_all_enqueued_jobs ();
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if (jerry_value_has_error_flag (ret_value))
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{
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ret_code = JERRY_STANDALONE_EXIT_CODE_FAIL;
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}
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jerry_release_value (ret_value);
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jerry_cleanup ();
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return ret_code;
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} /* main */
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/**
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* Aborts the program.
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*/
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void jerry_port_fatal (jerry_fatal_code_t code)
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{
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exit (1);
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} /* jerry_port_fatal */
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/**
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* Provide log message implementation for the engine.
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*/
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void
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jerry_port_log (jerry_log_level_t level, /**< log level */
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const char *format, /**< format string */
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...) /**< parameters */
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{
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if (level <= jerry_log_level)
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{
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va_list args;
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va_start (args, format);
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vfprintf (stderr, format, args);
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va_end (args);
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}
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} /* jerry_port_log */
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/**
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* Dummy function to get the time zone.
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*
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* @return true
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*/
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bool
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jerry_port_get_time_zone (jerry_time_zone_t *tz_p)
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{
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/* We live in UTC. */
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tz_p->offset = 0;
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tz_p->daylight_saving_time = 0;
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return true;
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} /* jerry_port_get_time_zone */
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/**
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* Dummy function to get the current time.
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*
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* @return 0
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*/
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double
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jerry_port_get_current_time (void)
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{
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return 0;
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} /* jerry_port_get_current_time */
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/**
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* Provide the implementation of jerryx_port_handler_print_char.
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* Uses 'printf' to print a single character to standard output.
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*/
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void
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jerryx_port_handler_print_char (char c) /**< the character to print */
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{
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printf ("%c", c);
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} /* jerryx_port_handler_print_char */
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