uintptr_t
jsd_GetClosestPC(JSDContext* jsdc, JSDScript* jsdscript, unsigned line)
{
uintptr_t pc;
JSCrossCompartmentCall *call;
if( !jsdscript )
return 0;
#ifdef LIVEWIRE
if( jsdscript->lwscript )
{
unsigned newline;
jsdlw_RawToProcessedLineNumber(jsdc, jsdscript, line, &newline);
if( line != newline )
line = newline;
}
#endif
call = JS_EnterCrossCompartmentCallScript(jsdc->dumbContext, jsdscript->script);
if(!call)
return 0;
pc = (uintptr_t) JS_LineNumberToPC(jsdc->dumbContext, jsdscript->script, line );
JS_LeaveCrossCompartmentCall(call);
return pc;
}
/*
* call-seq:
* set_trap(script, parsecode, block)
*
* Set the trap at +script+ and +parsecode+ to +block+
*/
static VALUE set_trap(VALUE self, VALUE script, VALUE linenum, VALUE block)
{
JohnsonRuntime* runtime;
Data_Get_Struct(self, JohnsonRuntime, runtime);
JSContext * context = johnson_get_current_context(runtime);
jsval compiled_js;
if(!convert_to_js(runtime, script, &compiled_js))
rb_raise(rb_eRuntimeError, "Couldn't get compiled script.");
JSScript * js_script = (JSScript *)JS_GetPrivate(context, JSVAL_TO_OBJECT(compiled_js));
jsbytecode * pc = JS_LineNumberToPC(context, js_script, (uintN)NUM2INT(linenum));
return JS_SetTrap(context, js_script, pc, trap_handler, (void*)block) ? Qtrue : Qfalse;
}
jsuword
jsd_GetClosestPC(JSDContext* jsdc, JSDScript* jsdscript, uintN line)
{
#ifdef LIVEWIRE
if( jsdscript && jsdscript->lwscript )
{
uintN newline;
jsdlw_RawToProcessedLineNumber(jsdc, jsdscript, line, &newline);
if( line != newline )
line = newline;
}
#endif
return (jsuword) JS_LineNumberToPC(jsdc->dumbContext,
jsdscript->script, line );
}
void CThreadDebugger::NewScriptHook(JSContext* cx, const char* filename, unsigned lineno, JSScript* script, JSFunction* UNUSED(fun), void* UNUSED(callerdata))
{
uint scriptExtent = JS_GetScriptLineExtent (cx, script);
std::string stringFileName(filename);
if (stringFileName == "")
return;
for (uint line = lineno; line < scriptExtent + lineno; ++line)
{
// If we already have a mapping for this line, we check if the current scipt is more deeply nested.
// If it isn't more deeply nested, we don't overwrite the previous mapping
// The most deeply nested script is always the one that must be used!
uint firstLine = 0;
uint lastLine = 0;
jsbytecode* oldPC = NULL;
if (CheckIfMappingPresent(stringFileName, line))
{
firstLine = m->m_LineToPCMap[stringFileName][line].firstLineInFunction;
lastLine = m->m_LineToPCMap[stringFileName][line].lastLineInFunction;
// If an entry nested equally is present too, we must overwrite it.
// The same script(function) can trigger a NewScriptHook multiple times without DestroyScriptHooks between these
// calls. In this case the old script becomes invalid.
if (lineno < firstLine || scriptExtent + lineno > lastLine)
continue;
else
oldPC = m->m_LineToPCMap[stringFileName][line].pBytecode;
}
jsbytecode* pc = JS_LineNumberToPC (cx, script, line);
m->m_LineToPCMap[stringFileName][line].pBytecode = pc;
m->m_LineToPCMap[stringFileName][line].pScript = script;
m->m_LineToPCMap[stringFileName][line].firstLineInFunction = lineno;
m->m_LineToPCMap[stringFileName][line].lastLineInFunction = lineno + scriptExtent;
// If we are replacing a script, the associated traps become invalid
if (lineno == firstLine && scriptExtent + lineno == lastLine)
{
ReturnActiveBreakPoints(oldPC);
SetAllNewTraps();
}
}
}
