YourWishes/jerryscript
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add line info support. (#2286)

Browse Source 
Add line info data to byte, which allows getting a backtrace info directly
from the engine. Snapshots are not supported.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2018-04-19 02:12:54 +02:00
committed by yichoi
parent 095b730f9d
commit 5e097dc354
24 changed files with 773 additions and 52 deletions
Download Patch File Download Diff File Expand all files Collapse all files
jerry-core/parser/js/js-parser-util.c
+55
View File
@@ -17,6 +17,10 @@
#ifndef JERRY_DISABLE_JS_PARSER
#ifdef JERRY_ENABLE_LINE_INFO
#include "jcontext.h"
#endif /* JERRY_ENABLE_LINE_INFO */
/** \addtogroup parser Parser
* @{
*
@@ -352,6 +356,57 @@ parser_emit_cbc_push_number (parser_context_t *context_p, /**< context */
}
} /* parser_emit_cbc_push_number */
#ifdef JERRY_ENABLE_LINE_INFO
/**
* Append a line info data
*/
void
parser_emit_line_info (parser_context_t *context_p, /**< context */
uint32_t line, /**< current line */
bool flush_cbc) /**< flush last byte code */
{
if (JERRY_CONTEXT (resource_name) == ECMA_VALUE_UNDEFINED)
{
return;
}
if (flush_cbc && context_p->last_cbc_opcode != PARSER_CBC_UNAVAILABLE)
{
parser_flush_cbc (context_p);
}
#ifdef PARSER_DUMP_BYTE_CODE
if (context_p->is_show_opcodes)
{
JERRY_DEBUG_MSG (" [%3d] CBC_EXT_LINE %d\n", (int) context_p->stack_depth, line);
}
#endif /* PARSER_DUMP_BYTE_CODE */
parser_emit_two_bytes (context_p, CBC_EXT_OPCODE, CBC_EXT_LINE);
context_p->byte_code_size += 2;
context_p->last_line_info_line = line;
do
{
uint8_t byte = (uint8_t) (line & CBC_LOWER_SEVEN_BIT_MASK);
line >>= 7;
if (line > 0)
{
byte = (uint8_t) (byte | CBC_HIGHEST_BIT_MASK);
}
PARSER_APPEND_TO_BYTE_CODE (context_p, byte);
context_p->byte_code_size++;
}
while (line > 0);
} /* parser_emit_line_info */
#endif /* JERRY_ENABLE_LINE_INFO */
/**
* Append a byte code with a branch argument
*/