mirror of
https://github.com/mozilla/gecko-dev.git
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669 lines
17 KiB
C
669 lines
17 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 License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/*
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* JavaScript Debugging support - Script support
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*/
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#include "jsd.h"
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/* Comment this out to disable (NT specific) dumping as we go */
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/*
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** #ifdef DEBUG
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** #define JSD_DUMP 1
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** #endif
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*/
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#define NOT_SET_YET -1
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/***************************************************************************/
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#ifdef DEBUG
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void JSD_ASSERT_VALID_SCRIPT(JSDScript* jsdscript)
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{
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JS_ASSERT(jsdscript);
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JS_ASSERT(jsdscript->script);
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}
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void JSD_ASSERT_VALID_EXEC_HOOK(JSDExecHook* jsdhook)
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{
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JS_ASSERT(jsdhook);
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JS_ASSERT(jsdhook->hook);
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}
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#endif
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#ifdef LIVEWIRE
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static JSBool
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HasFileExtention(const char* name, const char* ext)
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{
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int i;
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int len = strlen(ext);
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const char* p = strrchr(name,'.');
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if( !p )
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return JS_FALSE;
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p++;
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for(i = 0; i < len; i++ )
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{
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JS_ASSERT(islower(ext[i]));
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if( 0 == p[i] || tolower(p[i]) != ext[i] )
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return JS_FALSE;
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}
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if( 0 != p[i] )
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return JS_FALSE;
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return JS_TRUE;
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}
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#endif /* LIVEWIRE */
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static JSDScript*
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_newJSDScript(JSDContext* jsdc,
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JSContext *cx,
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JSScript *script,
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JSFunction* function)
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{
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JSDScript* jsdscript;
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uintN lineno;
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const char* raw_filename;
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JS_ASSERT(JSD_SCRIPTS_LOCKED(jsdc));
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/* these are inlined javascript: urls and we can't handle them now */
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lineno = (uintN) JS_GetScriptBaseLineNumber(cx, script);
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if( lineno == 0 )
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return NULL;
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jsdscript = (JSDScript*) calloc(1, sizeof(JSDScript));
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if( ! jsdscript )
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return NULL;
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raw_filename = JS_GetScriptFilename(cx,script);
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JS_APPEND_LINK(&jsdscript->links, &jsdc->scripts);
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jsdscript->jsdc = jsdc;
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jsdscript->script = script;
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jsdscript->function = function;
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jsdscript->lineBase = lineno;
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jsdscript->lineExtent = (uintN)NOT_SET_YET;
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#ifndef LIVEWIRE
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jsdscript->url = (char*) jsd_BuildNormalizedURL(raw_filename);
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#else
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jsdscript->app = LWDBG_GetCurrentApp();
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if( jsdscript->app && raw_filename )
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{
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jsdscript->url = jsdlw_BuildAppRelativeFilename(jsdscript->app, raw_filename);
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if( function )
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{
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jsdscript->lwscript =
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LWDBG_GetScriptOfFunction(jsdscript->app,
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JS_GetFunctionName(function));
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/* also, make sure this file is added to filelist if is .js file */
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if( HasFileExtention(raw_filename,"js") ||
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HasFileExtention(raw_filename,"sjs") )
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{
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jsdlw_PreLoadSource(jsdc, jsdscript->app, raw_filename, JS_FALSE);
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}
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}
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else
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{
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jsdscript->lwscript = LWDBG_GetCurrentTopLevelScript();
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}
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}
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#endif
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JS_INIT_CLIST(&jsdscript->hooks);
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return jsdscript;
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}
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static void
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_destroyJSDScript(JSDContext* jsdc,
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JSDScript* jsdscript)
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{
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JS_ASSERT(JSD_SCRIPTS_LOCKED(jsdc));
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/* destroy all hooks */
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jsd_ClearAllExecutionHooksForScript(jsdc, jsdscript);
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JS_REMOVE_LINK(&jsdscript->links);
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if(jsdscript->url)
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free(jsdscript->url);
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if(jsdscript)
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free(jsdscript);
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}
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/***************************************************************************/
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#ifdef JSD_DUMP
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static void
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_dumpJSDScript(JSDContext* jsdc, JSDScript* jsdscript, const char* leadingtext)
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{
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const char* name;
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const char* fun;
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uintN base;
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uintN extent;
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char Buf[256];
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name = jsd_GetScriptFilename(jsdc, jsdscript);
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fun = jsd_GetScriptFunctionName(jsdc, jsdscript);
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base = jsd_GetScriptBaseLineNumber(jsdc, jsdscript);
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extent = jsd_GetScriptLineExtent(jsdc, jsdscript);
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sprintf( Buf, "%sscript=%08X, %s, %s, %d-%d\n",
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leadingtext,
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(unsigned) jsdscript->script,
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name ? name : "no URL",
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fun ? fun : "no fun",
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base, base + extent - 1 );
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OutputDebugString( Buf );
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}
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static void
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_dumpJSDScriptList( JSDContext* jsdc )
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{
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JSDScript* iterp = NULL;
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JSDScript* jsdscript = NULL;
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OutputDebugString( "*** JSDScriptDump\n" );
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while( NULL != (jsdscript = jsd_IterateScripts(jsdc, &iterp)) )
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_dumpJSDScript( jsdc, jsdscript, " script: " );
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}
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#endif /* JSD_DUMP */
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/***************************************************************************/
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void
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jsd_DestroyAllJSDScripts( JSDContext* jsdc )
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{
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JSDScript *jsdscript;
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JSDScript *next;
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JS_ASSERT(JSD_SCRIPTS_LOCKED(jsdc));
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for( jsdscript = (JSDScript*)jsdc->scripts.next;
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jsdscript != (JSDScript*)&jsdc->scripts;
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jsdscript = next )
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{
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next = (JSDScript*)jsdscript->links.next;
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_destroyJSDScript( jsdc, jsdscript );
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}
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}
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JSDScript*
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jsd_FindJSDScript( JSDContext* jsdc,
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JSScript *script )
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{
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JSDScript *jsdscript;
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JS_ASSERT(JSD_SCRIPTS_LOCKED(jsdc));
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for( jsdscript = (JSDScript *)jsdc->scripts.next;
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jsdscript != (JSDScript *)&jsdc->scripts;
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jsdscript = (JSDScript *)jsdscript->links.next )
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{
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if (jsdscript->script == script)
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return jsdscript;
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}
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return NULL;
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}
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JSDScript*
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jsd_IterateScripts(JSDContext* jsdc, JSDScript **iterp)
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{
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JSDScript *jsdscript = *iterp;
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JS_ASSERT(JSD_SCRIPTS_LOCKED(jsdc));
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if( !jsdscript )
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jsdscript = (JSDScript *)jsdc->scripts.next;
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if( jsdscript == (JSDScript *)&jsdc->scripts )
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return NULL;
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*iterp = (JSDScript*) jsdscript->links.next;
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return jsdscript;
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}
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JSBool
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jsd_IsActiveScript(JSDContext* jsdc, JSDScript *jsdscript)
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{
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JSDScript *current;
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JS_ASSERT(JSD_SCRIPTS_LOCKED(jsdc));
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for( current = (JSDScript *)jsdc->scripts.next;
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current != (JSDScript *)&jsdc->scripts;
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current = (JSDScript *)current->links.next )
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{
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if(jsdscript == current)
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return JS_TRUE;
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}
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return JS_FALSE;
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}
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const char*
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jsd_GetScriptFilename(JSDContext* jsdc, JSDScript *jsdscript)
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{
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return jsdscript->url;
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}
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const char*
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jsd_GetScriptFunctionName(JSDContext* jsdc, JSDScript *jsdscript)
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{
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if( ! jsdscript->function )
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return NULL;
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return JS_GetFunctionName(jsdscript->function);
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}
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uintN
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jsd_GetScriptBaseLineNumber(JSDContext* jsdc, JSDScript *jsdscript)
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{
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return jsdscript->lineBase;
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}
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uintN
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jsd_GetScriptLineExtent(JSDContext* jsdc, JSDScript *jsdscript)
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{
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if( NOT_SET_YET == jsdscript->lineExtent )
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jsdscript->lineExtent = JS_GetScriptLineExtent(jsdc->dumbContext, jsdscript->script);
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return jsdscript->lineExtent;
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}
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jsuword
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jsd_GetClosestPC(JSDContext* jsdc, JSDScript* jsdscript, uintN line)
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{
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#ifdef LIVEWIRE
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if( jsdscript && jsdscript->lwscript )
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{
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uintN newline;
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jsdlw_RawToProcessedLineNumber(jsdc, jsdscript, line, &newline);
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if( line != newline )
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line = newline;
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}
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#endif
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return (jsuword) JS_LineNumberToPC(jsdc->dumbContext,
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jsdscript->script, line );
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}
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uintN
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jsd_GetClosestLine(JSDContext* jsdc, JSDScript* jsdscript, jsuword pc)
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{
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uintN first = jsdscript->lineBase;
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uintN last = first + jsd_GetScriptLineExtent(jsdc, jsdscript) - 1;
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uintN line = JS_PCToLineNumber(jsdc->dumbContext,
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jsdscript->script, (jsbytecode*)pc);
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if( line < first )
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return first;
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if( line > last )
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return last;
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#ifdef LIVEWIRE
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if( jsdscript && jsdscript->lwscript )
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{
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uintN newline;
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jsdlw_ProcessedToRawLineNumber(jsdc, jsdscript, line, &newline);
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line = newline;
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}
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#endif
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return line;
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}
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JSBool
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jsd_SetScriptHook(JSDContext* jsdc, JSD_ScriptHookProc hook, void* callerdata)
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{
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JSD_LOCK();
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jsdc->scriptHook = hook;
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jsdc->scriptHookData = callerdata;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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JSBool
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jsd_GetScriptHook(JSDContext* jsdc, JSD_ScriptHookProc* hook, void** callerdata)
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{
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JSD_LOCK();
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if( hook )
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*hook = jsdc->scriptHook;
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if( callerdata )
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*callerdata = jsdc->scriptHookData;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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/***************************************************************************/
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void JS_DLL_CALLBACK
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jsd_NewScriptHookProc(
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JSContext *cx,
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const char *filename, /* URL this script loads from */
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uintN lineno, /* line where this script starts */
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JSScript *script,
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JSFunction *fun,
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void* callerdata )
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{
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JSDScript* jsdscript = NULL;
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JSDContext* jsdc = (JSDContext*) callerdata;
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JSD_ScriptHookProc hook;
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void* hookData;
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JSD_ASSERT_VALID_CONTEXT(jsdc);
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if( JSD_IS_DANGEROUS_THREAD(jsdc) )
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return;
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#ifdef LIVEWIRE
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if( 1 == lineno )
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jsdlw_PreLoadSource(jsdc, LWDBG_GetCurrentApp(), filename, JS_TRUE );
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#endif
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JSD_LOCK_SCRIPTS(jsdc);
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jsdscript = _newJSDScript(jsdc, cx, script, fun);
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JSD_UNLOCK_SCRIPTS(jsdc);
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if( ! jsdscript )
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return;
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#ifdef JSD_DUMP
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JSD_LOCK_SCRIPTS(jsdc);
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_dumpJSDScript(jsdc, jsdscript, "***NEW Script: ");
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_dumpJSDScriptList( jsdc );
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JSD_UNLOCK_SCRIPTS(jsdc);
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#endif /* JSD_DUMP */
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/* local in case jsdc->scriptHook gets cleared on another thread */
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JSD_LOCK();
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hook = jsdc->scriptHook;
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hookData = jsdc->scriptHookData;
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JSD_UNLOCK();
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if( hook )
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hook(jsdc, jsdscript, JS_TRUE, hookData);
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}
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void JS_DLL_CALLBACK
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jsd_DestroyScriptHookProc(
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JSContext *cx,
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JSScript *script,
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void* callerdata )
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{
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JSDScript* jsdscript = NULL;
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JSDContext* jsdc = (JSDContext*) callerdata;
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JSD_ScriptHookProc hook;
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void* hookData;
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JSD_ASSERT_VALID_CONTEXT(jsdc);
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if( JSD_IS_DANGEROUS_THREAD(jsdc) )
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return;
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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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return;
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#ifdef JSD_DUMP
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JSD_LOCK_SCRIPTS(jsdc);
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_dumpJSDScript(jsdc, jsdscript, "***DESTROY Script: ");
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JSD_UNLOCK_SCRIPTS(jsdc);
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#endif /* JSD_DUMP */
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/* local in case hook gets cleared on another thread */
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JSD_LOCK();
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hook = jsdc->scriptHook;
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hookData = jsdc->scriptHookData;
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JSD_UNLOCK();
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if( hook )
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hook(jsdc, jsdscript, JS_FALSE, hookData);
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JSD_LOCK_SCRIPTS(jsdc);
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_destroyJSDScript(jsdc, jsdscript);
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JSD_UNLOCK_SCRIPTS(jsdc);
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#ifdef JSD_DUMP
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JSD_LOCK_SCRIPTS(jsdc);
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_dumpJSDScriptList(jsdc);
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JSD_UNLOCK_SCRIPTS(jsdc);
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#endif /* JSD_DUMP */
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}
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/***************************************************************************/
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static JSDExecHook*
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_findHook(JSDContext* jsdc, JSDScript* jsdscript, jsuword pc)
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{
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JSDExecHook* jsdhook;
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JSCList* list = &jsdscript->hooks;
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for( jsdhook = (JSDExecHook*)list->next;
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jsdhook != (JSDExecHook*)list;
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jsdhook = (JSDExecHook*)jsdhook->links.next )
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{
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if (jsdhook->pc == pc)
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return jsdhook;
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}
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return NULL;
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}
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static JSBool
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_isActiveHook(JSDContext* jsdc, JSScript *script, JSDExecHook* jsdhook)
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{
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JSDExecHook* current;
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JSCList* list;
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JSDScript* jsdscript;
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JSD_LOCK_SCRIPTS(jsdc);
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jsdscript = jsd_FindJSDScript(jsdc, script);
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if( ! jsdscript)
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{
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JSD_UNLOCK_SCRIPTS(jsdc);
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return JS_FALSE;
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}
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list = &jsdscript->hooks;
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for( current = (JSDExecHook*)list->next;
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current != (JSDExecHook*)list;
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current = (JSDExecHook*)current->links.next )
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{
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|
if(current == jsdhook)
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{
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JSD_UNLOCK_SCRIPTS(jsdc);
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return JS_TRUE;
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}
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|
}
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JSD_UNLOCK_SCRIPTS(jsdc);
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return JS_FALSE;
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}
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|
|
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|
JSTrapStatus JS_DLL_CALLBACK
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|
jsd_TrapHandler(JSContext *cx, JSScript *script, jsbytecode *pc, jsval *rval,
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|
void *closure)
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|
{
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|
JSDExecHook* jsdhook = (JSDExecHook*) closure;
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|
JSD_ExecutionHookProc hook;
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|
void* hookData;
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|
JSDContext* jsdc;
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|
JSDScript* jsdscript;
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|
JSD_LOCK();
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|
if( NULL == (jsdc = jsd_JSDContextForJSContext(cx)) ||
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! _isActiveHook(jsdc, script, jsdhook) )
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{
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JSD_UNLOCK();
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return JSTRAP_CONTINUE;
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}
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JSD_ASSERT_VALID_EXEC_HOOK(jsdhook);
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JS_ASSERT(jsdhook->pc == (jsuword)pc);
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JS_ASSERT(jsdhook->jsdscript->script == script);
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JS_ASSERT(jsdhook->jsdscript->jsdc == jsdc);
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hook = jsdhook->hook;
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hookData = jsdhook->callerdata;
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jsdscript = jsdhook->jsdscript;
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|
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/* do not use jsdhook-> after this point */
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JSD_UNLOCK();
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|
if( ! jsdc || ! jsdc->inited )
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return JSTRAP_CONTINUE;
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|
|
if( JSD_IS_DANGEROUS_THREAD(jsdc) )
|
|
return JSTRAP_CONTINUE;
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|
|
#ifdef LIVEWIRE
|
|
if( ! jsdlw_UserCodeAtPC(jsdc, jsdscript, (jsuword)pc) )
|
|
return JSTRAP_CONTINUE;
|
|
#endif
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|
|
return jsd_CallExecutionHook(jsdc, cx, JSD_HOOK_BREAKPOINT,
|
|
hook, hookData, rval);
|
|
}
|
|
|
|
|
|
|
|
JSBool
|
|
jsd_SetExecutionHook(JSDContext* jsdc,
|
|
JSDScript* jsdscript,
|
|
jsuword pc,
|
|
JSD_ExecutionHookProc hook,
|
|
void* callerdata)
|
|
{
|
|
JSDExecHook* jsdhook;
|
|
|
|
JSD_LOCK();
|
|
if( ! hook )
|
|
{
|
|
jsd_ClearExecutionHook(jsdc, jsdscript, pc);
|
|
JSD_UNLOCK();
|
|
return JS_TRUE;
|
|
}
|
|
|
|
jsdhook = _findHook(jsdc, jsdscript, pc);
|
|
if( jsdhook )
|
|
{
|
|
jsdhook->hook = hook;
|
|
jsdhook->callerdata = callerdata;
|
|
return JS_TRUE;
|
|
}
|
|
/* else... */
|
|
|
|
jsdhook = (JSDExecHook*)calloc(1, sizeof(JSDExecHook));
|
|
if( ! jsdhook )
|
|
return JS_FALSE;
|
|
jsdhook->jsdscript = jsdscript;
|
|
jsdhook->pc = pc;
|
|
jsdhook->hook = hook;
|
|
jsdhook->callerdata = callerdata;
|
|
|
|
if( ! JS_SetTrap(jsdc->dumbContext, jsdscript->script,
|
|
(jsbytecode*)pc, jsd_TrapHandler, (void*) jsdhook) )
|
|
{
|
|
free(jsdhook);
|
|
return JS_FALSE;
|
|
}
|
|
|
|
JS_APPEND_LINK(&jsdhook->links, &jsdscript->hooks);
|
|
JSD_UNLOCK();
|
|
|
|
return JS_TRUE;
|
|
}
|
|
|
|
JSBool
|
|
jsd_ClearExecutionHook(JSDContext* jsdc,
|
|
JSDScript* jsdscript,
|
|
jsuword pc)
|
|
{
|
|
JSDExecHook* jsdhook;
|
|
|
|
JSD_LOCK();
|
|
|
|
jsdhook = _findHook(jsdc, jsdscript, pc);
|
|
if( ! jsdhook )
|
|
{
|
|
JS_ASSERT(0);
|
|
JSD_UNLOCK();
|
|
return JS_FALSE;
|
|
}
|
|
|
|
JS_ClearTrap(jsdc->dumbContext, jsdscript->script,
|
|
(jsbytecode*)pc, NULL, NULL );
|
|
|
|
JS_REMOVE_LINK(&jsdhook->links);
|
|
free(jsdhook);
|
|
|
|
JSD_UNLOCK();
|
|
return JS_TRUE;
|
|
}
|
|
|
|
JSBool
|
|
jsd_ClearAllExecutionHooksForScript(JSDContext* jsdc, JSDScript* jsdscript)
|
|
{
|
|
JSDExecHook* jsdhook;
|
|
JSCList* list = &jsdscript->hooks;
|
|
|
|
JSD_LOCK();
|
|
|
|
while( (JSDExecHook*)list != (jsdhook = (JSDExecHook*)list->next) )
|
|
{
|
|
JS_REMOVE_LINK(&jsdhook->links);
|
|
free(jsdhook);
|
|
}
|
|
|
|
JS_ClearScriptTraps(jsdc->dumbContext, jsdscript->script);
|
|
JSD_UNLOCK();
|
|
|
|
return JS_TRUE;
|
|
}
|
|
|
|
JSBool
|
|
jsd_ClearAllExecutionHooks(JSDContext* jsdc)
|
|
{
|
|
JSDScript* jsdscript;
|
|
JSDScript* iterp = NULL;
|
|
|
|
JSD_LOCK();
|
|
while( NULL != (jsdscript = jsd_IterateScripts(jsdc, &iterp)) )
|
|
jsd_ClearAllExecutionHooksForScript(jsdc, jsdscript);
|
|
JSD_UNLOCK();
|
|
return JS_TRUE;
|
|
}
|
|
|
|
void
|
|
jsd_ScriptCreated(JSDContext* jsdc,
|
|
JSContext *cx,
|
|
const char *filename, /* URL this script loads from */
|
|
uintN lineno, /* line where this script starts */
|
|
JSScript *script,
|
|
JSFunction *fun)
|
|
{
|
|
jsd_NewScriptHookProc(cx, filename, lineno, script, fun, jsdc);
|
|
}
|
|
|
|
void
|
|
jsd_ScriptDestroyed(JSDContext* jsdc,
|
|
JSContext *cx,
|
|
JSScript *script)
|
|
{
|
|
jsd_DestroyScriptHookProc(cx, script, jsdc);
|
|
}
|