зеркало из https://github.com/mozilla/gecko-dev.git
121 строка
2.8 KiB
C
121 строка
2.8 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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/*
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* JavaScript Debugging support - Stepping support
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*/
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#include "jsd.h"
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/*
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* #define JSD_TRACE 1
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*/
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#ifdef JSD_TRACE
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static char*
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_indentSpaces(int i)
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{
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#define MAX_INDENT 63
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static char* p = NULL;
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if(!p)
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{
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p = calloc(1, MAX_INDENT+1);
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if(!p) return "";
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memset(p, ' ', MAX_INDENT);
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}
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if(i > MAX_INDENT) return p;
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return p + MAX_INDENT-i;
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}
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static void
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_interpreterTrace(JSDContext* jsdc, JSContext *cx, JSStackFrame *fp,
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JSBool before, JSBool *ok)
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{
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JSDScript* jsdscript = NULL;
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JSScript * script;
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static indent = 0;
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char* buf;
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const char* funName = NULL;
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script = JS_GetFrameScript(cx, fp);
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if(script)
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{
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JSD_LOCK_SCRIPTS(jsdc);
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jsdscript = jsd_FindJSDScript(jsdc, script);
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JSD_UNLOCK_SCRIPTS(jsdc);
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if(jsdscript)
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funName = JSD_GetScriptFunctionName(jsdc, jsdscript);
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}
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if(!funName)
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funName = "TOP_LEVEL";
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if(before)
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{
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buf = JS_smprintf("%sentering %s %s this: %0x\n",
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_indentSpaces(indent++),
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funName,
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JS_IsContructorFrame(cx, fp) ? "constructing":"",
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(int)JS_GetFrameThis(cx, fp));
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}
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else
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{
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buf = JS_smprintf("%sleaving %s\n",
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_indentSpaces(--indent),
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funName);
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}
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JS_ASSERT(indent >= 0);
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if(!buf)
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return;
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printf(buf);
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free(buf);
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}
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#endif
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void * JS_DLL_CALLBACK
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jsd_InterpreterHook(JSContext *cx, JSStackFrame *fp, JSBool before,
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JSBool *ok, void *closure)
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{
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JSDContext* jsdc = (JSDContext*) closure;
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if( ! jsdc || ! jsdc->inited )
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return NULL;
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if(before && JS_IsContructorFrame(cx, fp))
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jsd_Constructing(jsdc, cx, JS_GetFrameThis(cx, fp), fp);
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#ifdef JSD_TRACE
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_interpreterTrace(jsdc, cx, fp, before, ok);
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return closure;
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#else
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return NULL;
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#endif
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/*
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* use this before calling any hook...
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* if( JSD_IS_DANGEROUS_THREAD(jsdc) )
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* return NULL;
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*/
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}
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