зеркало из https://github.com/mozilla/pjs.git
634 строки
16 KiB
C
634 строки
16 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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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 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* 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
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* JavaScript Debugging support - Value and Property support
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*/
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#include "jsd.h"
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#ifdef DEBUG
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void JSD_ASSERT_VALID_VALUE(JSDValue* jsdval)
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{
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JS_ASSERT(jsdval);
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JS_ASSERT(jsdval->nref > 0);
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if(!JS_CLIST_IS_EMPTY(&jsdval->props))
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{
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JS_ASSERT(CHECK_BIT_FLAG(jsdval->flags, GOT_PROPS));
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JS_ASSERT(JSVAL_IS_OBJECT(jsdval->val));
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}
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if(jsdval->proto)
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{
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JS_ASSERT(CHECK_BIT_FLAG(jsdval->flags, GOT_PROTO));
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JS_ASSERT(jsdval->proto->nref > 0);
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}
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if(jsdval->parent)
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{
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JS_ASSERT(CHECK_BIT_FLAG(jsdval->flags, GOT_PARENT));
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JS_ASSERT(jsdval->parent->nref > 0);
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}
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if(jsdval->ctor)
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{
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JS_ASSERT(CHECK_BIT_FLAG(jsdval->flags, GOT_CTOR));
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JS_ASSERT(jsdval->ctor->nref > 0);
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}
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}
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void JSD_ASSERT_VALID_PROPERTY(JSDProperty* jsdprop)
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{
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JS_ASSERT(jsdprop);
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JS_ASSERT(jsdprop->name);
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JS_ASSERT(jsdprop->name->nref > 0);
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JS_ASSERT(jsdprop->val);
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JS_ASSERT(jsdprop->val->nref > 0);
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if(jsdprop->alias)
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JS_ASSERT(jsdprop->alias->nref > 0);
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}
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#endif
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JSBool
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jsd_IsValueObject(JSDContext* jsdc, JSDValue* jsdval)
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{
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return JSVAL_IS_OBJECT(jsdval->val);
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}
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JSBool
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jsd_IsValueNumber(JSDContext* jsdc, JSDValue* jsdval)
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{
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return JSVAL_IS_NUMBER(jsdval->val);
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}
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JSBool
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jsd_IsValueInt(JSDContext* jsdc, JSDValue* jsdval)
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{
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return JSVAL_IS_INT(jsdval->val);
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}
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JSBool
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jsd_IsValueDouble(JSDContext* jsdc, JSDValue* jsdval)
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{
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return JSVAL_IS_DOUBLE(jsdval->val);
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}
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JSBool
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jsd_IsValueString(JSDContext* jsdc, JSDValue* jsdval)
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{
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return JSVAL_IS_STRING(jsdval->val);
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}
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JSBool
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jsd_IsValueBoolean(JSDContext* jsdc, JSDValue* jsdval)
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{
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return JSVAL_IS_BOOLEAN(jsdval->val);
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}
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JSBool
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jsd_IsValueNull(JSDContext* jsdc, JSDValue* jsdval)
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{
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return JSVAL_IS_NULL(jsdval->val);
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}
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JSBool
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jsd_IsValueVoid(JSDContext* jsdc, JSDValue* jsdval)
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{
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return JSVAL_IS_VOID(jsdval->val);
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}
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JSBool
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jsd_IsValuePrimitive(JSDContext* jsdc, JSDValue* jsdval)
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{
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return JSVAL_IS_PRIMITIVE(jsdval->val);
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}
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JSBool
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jsd_IsValueFunction(JSDContext* jsdc, JSDValue* jsdval)
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{
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return JSVAL_IS_FUNCTION(jsdc->dumbContext, jsdval->val);
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}
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JSBool
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jsd_IsValueNative(JSDContext* jsdc, JSDValue* jsdval)
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{
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JSContext* cx = jsdc->dumbContext;
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jsval val = jsdval->val;
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JSFunction* fun;
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JSExceptionState* exceptionState;
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if(!JSVAL_IS_OBJECT(val))
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return JS_FALSE;
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if(JSVAL_IS_FUNCTION(cx, val))
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{
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exceptionState = JS_SaveExceptionState(cx);
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fun = JS_ValueToFunction(cx, val);
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JS_RestoreExceptionState(cx, exceptionState);
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if(!fun)
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{
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JS_ASSERT(0);
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return JS_FALSE;
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}
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return JS_GetFunctionScript(cx, fun) ? JS_FALSE : JS_TRUE;
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}
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return JSVAL_TO_OBJECT(val) && OBJ_IS_NATIVE(JSVAL_TO_OBJECT(val));
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}
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/***************************************************************************/
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JSBool
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jsd_GetValueBoolean(JSDContext* jsdc, JSDValue* jsdval)
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{
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jsval val = jsdval->val;
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if(!JSVAL_IS_BOOLEAN(val))
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return JS_FALSE;
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return JSVAL_TO_BOOLEAN(val);
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}
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int32
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jsd_GetValueInt(JSDContext* jsdc, JSDValue* jsdval)
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{
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jsval val = jsdval->val;
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if(!JSVAL_IS_INT(val))
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return 0;
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return JSVAL_TO_INT(val);
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}
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jsdouble*
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jsd_GetValueDouble(JSDContext* jsdc, JSDValue* jsdval)
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{
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jsval val = jsdval->val;
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if(!JSVAL_IS_DOUBLE(val))
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return 0;
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return JSVAL_TO_DOUBLE(val);
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}
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JSString*
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jsd_GetValueString(JSDContext* jsdc, JSDValue* jsdval)
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{
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JSContext* cx = jsdc->dumbContext;
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JSExceptionState* exceptionState;
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if(!jsdval->string)
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{
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/* if the jsval is a string, then we don't need to double root it */
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if(JSVAL_IS_STRING(jsdval->val))
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jsdval->string = JSVAL_TO_STRING(jsdval->val);
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else
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{
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exceptionState = JS_SaveExceptionState(cx);
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jsdval->string = JS_ValueToString(cx, jsdval->val);
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JS_RestoreExceptionState(cx, exceptionState);
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if(jsdval->string)
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{
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if(!JS_AddNamedRoot(cx, &jsdval->string, "ValueString"))
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jsdval->string = NULL;
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}
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}
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}
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return jsdval->string;
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}
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const char*
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jsd_GetValueFunctionName(JSDContext* jsdc, JSDValue* jsdval)
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{
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JSContext* cx = jsdc->dumbContext;
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jsval val = jsdval->val;
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JSFunction* fun;
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JSExceptionState* exceptionState;
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if(!jsdval->funName && JSVAL_IS_FUNCTION(cx, val))
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{
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exceptionState = JS_SaveExceptionState(cx);
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fun = JS_ValueToFunction(cx, val);
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JS_RestoreExceptionState(cx, exceptionState);
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if(!fun)
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return NULL;
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jsdval->funName = JS_GetFunctionName(fun);
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}
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return jsdval->funName;
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}
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/***************************************************************************/
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JSDValue*
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jsd_NewValue(JSDContext* jsdc, jsval val)
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{
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JSDValue* jsdval;
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if(!(jsdval = (JSDValue*) calloc(1, sizeof(JSDValue))))
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return NULL;
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if(JSVAL_IS_GCTHING(val))
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{
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if(!JS_AddNamedRoot(jsdc->dumbContext, &jsdval->val, "JSDValue"))
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{
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free(jsdval);
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return NULL;
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}
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}
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jsdval->val = val;
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jsdval->nref = 1;
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JS_INIT_CLIST(&jsdval->props);
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return jsdval;
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}
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void
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jsd_DropValue(JSDContext* jsdc, JSDValue* jsdval)
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{
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JS_ASSERT(jsdval->nref > 0);
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if(0 == --jsdval->nref)
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{
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jsd_RefreshValue(jsdc, jsdval);
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if(JSVAL_IS_GCTHING(jsdval->val))
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JS_RemoveRoot(jsdc->dumbContext, &jsdval->val);
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free(jsdval);
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}
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}
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jsval
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jsd_GetValueWrappedJSVal(JSDContext* jsdc, JSDValue* jsdval)
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{
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return jsdval->val;
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}
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static JSDProperty* _newProperty(JSDContext* jsdc, JSPropertyDesc* pd,
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uintN additionalFlags)
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{
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JSDProperty* jsdprop;
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if(!(jsdprop = (JSDProperty*) calloc(1, sizeof(JSDProperty))))
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return NULL;
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JS_INIT_CLIST(&jsdprop->links);
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jsdprop->nref = 1;
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jsdprop->flags = pd->flags | additionalFlags;
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jsdprop->slot = pd->slot;
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if(!(jsdprop->name = jsd_NewValue(jsdc, pd->id)))
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goto new_prop_fail;
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if(!(jsdprop->val = jsd_NewValue(jsdc, pd->value)))
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goto new_prop_fail;
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if((jsdprop->flags & JSDPD_ALIAS) &&
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!(jsdprop->alias = jsd_NewValue(jsdc, pd->alias)))
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goto new_prop_fail;
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return jsdprop;
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new_prop_fail:
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jsd_DropProperty(jsdc, jsdprop);
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return NULL;
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}
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static void _freeProps(JSDContext* jsdc, JSDValue* jsdval)
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{
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JSDProperty* jsdprop;
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while(jsdprop = (JSDProperty*)jsdval->props.next,
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jsdprop != (JSDProperty*)&jsdval->props)
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{
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JS_REMOVE_AND_INIT_LINK(&jsdprop->links);
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jsd_DropProperty(jsdc, jsdprop);
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}
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JS_ASSERT(JS_CLIST_IS_EMPTY(&jsdval->props));
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CLEAR_BIT_FLAG(jsdval->flags, GOT_PROPS);
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}
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static JSBool _buildProps(JSDContext* jsdc, JSDValue* jsdval)
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{
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JSContext* cx = jsdc->dumbContext;
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JSPropertyDescArray pda;
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uintN i;
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JS_ASSERT(JS_CLIST_IS_EMPTY(&jsdval->props));
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JS_ASSERT(!(CHECK_BIT_FLAG(jsdval->flags, GOT_PROPS)));
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JS_ASSERT(JSVAL_IS_OBJECT(jsdval->val));
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if(!JSVAL_IS_OBJECT(jsdval->val) || JSVAL_IS_NULL(jsdval->val))
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return JS_FALSE;
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if(!JS_GetPropertyDescArray(cx, JSVAL_TO_OBJECT(jsdval->val), &pda))
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return JS_FALSE;
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for(i = 0; i < pda.length; i++)
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{
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JSDProperty* prop = _newProperty(jsdc, &pda.array[i], 0);
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if(!prop)
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{
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_freeProps(jsdc, jsdval);
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break;
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}
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JS_APPEND_LINK(&prop->links, &jsdval->props);
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}
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JS_PutPropertyDescArray(cx, &pda);
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SET_BIT_FLAG(jsdval->flags, GOT_PROPS);
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return !JS_CLIST_IS_EMPTY(&jsdval->props);
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}
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#undef DROP_CLEAR_VALUE
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#define DROP_CLEAR_VALUE(jsdc, x) if(x){jsd_DropValue(jsdc,x); x = NULL;}
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void
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jsd_RefreshValue(JSDContext* jsdc, JSDValue* jsdval)
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{
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JSContext* cx = jsdc->dumbContext;
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if(jsdval->string)
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{
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/* if the jsval is a string, then we didn't need to root the string */
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if(!JSVAL_IS_STRING(jsdval->val))
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JS_RemoveRoot(cx, &jsdval->string);
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jsdval->string = NULL;
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}
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jsdval->funName = NULL;
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jsdval->className = NULL;
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DROP_CLEAR_VALUE(jsdc, jsdval->proto);
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DROP_CLEAR_VALUE(jsdc, jsdval->parent);
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DROP_CLEAR_VALUE(jsdc, jsdval->ctor);
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_freeProps(jsdc, jsdval);
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jsdval->flags = 0;
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}
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/***************************************************************************/
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uintN
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jsd_GetCountOfProperties(JSDContext* jsdc, JSDValue* jsdval)
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{
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JSDProperty* jsdprop;
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uintN count = 0;
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if(!(CHECK_BIT_FLAG(jsdval->flags, GOT_PROPS)))
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if(!_buildProps(jsdc, jsdval))
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return 0;
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for(jsdprop = (JSDProperty*)jsdval->props.next;
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jsdprop != (JSDProperty*)&jsdval->props;
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jsdprop = (JSDProperty*)jsdprop->links.next)
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{
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count++;
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}
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return count;
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}
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JSDProperty*
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jsd_IterateProperties(JSDContext* jsdc, JSDValue* jsdval, JSDProperty **iterp)
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{
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JSDProperty* jsdprop = *iterp;
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if(!(CHECK_BIT_FLAG(jsdval->flags, GOT_PROPS)))
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{
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JS_ASSERT(!jsdprop);
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if(!_buildProps(jsdc, jsdval))
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return NULL;
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}
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if(!jsdprop)
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jsdprop = (JSDProperty*)jsdval->props.next;
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if(jsdprop == (JSDProperty*)&jsdval->props)
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return NULL;
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*iterp = (JSDProperty*)jsdprop->links.next;
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JS_ASSERT(jsdprop);
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jsdprop->nref++;
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return jsdprop;
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}
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JSDProperty*
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jsd_GetValueProperty(JSDContext* jsdc, JSDValue* jsdval, JSString* name)
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{
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JSContext* cx = jsdc->dumbContext;
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JSDProperty* jsdprop;
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JSDProperty* iter = NULL;
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JSObject* obj;
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uintN attrs = 0;
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JSBool found;
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JSPropertyDesc pd;
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const jschar * nameChars;
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size_t nameLen;
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jsval val;
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if(!jsd_IsValueObject(jsdc, jsdval))
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return NULL;
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/* If we already have the prop, then return it */
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while(NULL != (jsdprop = jsd_IterateProperties(jsdc, jsdval, &iter)))
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{
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JSString* propName = jsd_GetValueString(jsdc, jsdprop->name);
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if(propName && !JS_CompareStrings(propName, name))
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return jsdprop;
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JSD_DropProperty(jsdc, jsdprop);
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}
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/* Not found in property list, look it up explicitly */
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if(!(obj = JSVAL_TO_OBJECT(jsdval->val)))
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return NULL;
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nameChars = JS_GetStringChars(name);
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nameLen = JS_GetStringLength(name);
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JS_GetUCPropertyAttributes(cx, obj, nameChars, nameLen, &attrs, &found);
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if (!found)
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return NULL;
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JS_ClearPendingException(cx);
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if(!JS_GetUCProperty(cx, obj, nameChars, nameLen, &val))
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{
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if (JS_IsExceptionPending(cx))
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{
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if (!JS_GetPendingException(cx, &pd.value))
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return NULL;
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pd.flags = JSPD_EXCEPTION;
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}
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else
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{
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pd.flags = JSPD_ERROR;
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pd.value = JSVAL_VOID;
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}
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}
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else
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{
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pd.value = val;
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}
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pd.id = STRING_TO_JSVAL(name);
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pd.alias = pd.slot = pd.spare = 0;
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pd.flags |= (attrs & JSPROP_ENUMERATE) ? JSPD_ENUMERATE : 0
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| (attrs & JSPROP_READONLY) ? JSPD_READONLY : 0
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| (attrs & JSPROP_PERMANENT) ? JSPD_PERMANENT : 0;
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return _newProperty(jsdc, &pd, JSDPD_HINTED);
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}
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JSDValue*
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jsd_GetValuePrototype(JSDContext* jsdc, JSDValue* jsdval)
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{
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if(!(CHECK_BIT_FLAG(jsdval->flags, GOT_PROTO)))
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{
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JSObject* obj;
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JSObject* proto;
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JS_ASSERT(!jsdval->proto);
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SET_BIT_FLAG(jsdval->flags, GOT_PROTO);
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if(!JSVAL_IS_OBJECT(jsdval->val))
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return NULL;
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if(!(obj = JSVAL_TO_OBJECT(jsdval->val)))
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return NULL;
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if(!(proto = OBJ_GET_PROTO(jsdc->dumbContext,obj)))
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return NULL;
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|
jsdval->proto = jsd_NewValue(jsdc, OBJECT_TO_JSVAL(proto));
|
|
}
|
|
if(jsdval->proto)
|
|
jsdval->proto->nref++;
|
|
return jsdval->proto;
|
|
}
|
|
|
|
JSDValue*
|
|
jsd_GetValueParent(JSDContext* jsdc, JSDValue* jsdval)
|
|
{
|
|
if(!(CHECK_BIT_FLAG(jsdval->flags, GOT_PARENT)))
|
|
{
|
|
JSObject* obj;
|
|
JSObject* parent;
|
|
JS_ASSERT(!jsdval->parent);
|
|
SET_BIT_FLAG(jsdval->flags, GOT_PARENT);
|
|
if(!JSVAL_IS_OBJECT(jsdval->val))
|
|
return NULL;
|
|
if(!(obj = JSVAL_TO_OBJECT(jsdval->val)))
|
|
return NULL;
|
|
if(!(parent = OBJ_GET_PARENT(jsdc->dumbContext,obj)))
|
|
return NULL;
|
|
jsdval->parent = jsd_NewValue(jsdc, OBJECT_TO_JSVAL(parent));
|
|
}
|
|
if(jsdval->parent)
|
|
jsdval->parent->nref++;
|
|
return jsdval->parent;
|
|
}
|
|
|
|
JSDValue*
|
|
jsd_GetValueConstructor(JSDContext* jsdc, JSDValue* jsdval)
|
|
{
|
|
if(!(CHECK_BIT_FLAG(jsdval->flags, GOT_CTOR)))
|
|
{
|
|
JSObject* obj;
|
|
JSObject* proto;
|
|
JSObject* ctor;
|
|
JS_ASSERT(!jsdval->ctor);
|
|
SET_BIT_FLAG(jsdval->flags, GOT_CTOR);
|
|
if(!JSVAL_IS_OBJECT(jsdval->val))
|
|
return NULL;
|
|
if(!(obj = JSVAL_TO_OBJECT(jsdval->val)))
|
|
return NULL;
|
|
if(!(proto = OBJ_GET_PROTO(jsdc->dumbContext,obj)))
|
|
return NULL;
|
|
if(!(ctor = JS_GetConstructor(jsdc->dumbContext,proto)))
|
|
return NULL;
|
|
jsdval->ctor = jsd_NewValue(jsdc, OBJECT_TO_JSVAL(ctor));
|
|
}
|
|
if(jsdval->ctor)
|
|
jsdval->ctor->nref++;
|
|
return jsdval->ctor;
|
|
}
|
|
|
|
const char*
|
|
jsd_GetValueClassName(JSDContext* jsdc, JSDValue* jsdval)
|
|
{
|
|
jsval val = jsdval->val;
|
|
if(!jsdval->className && JSVAL_IS_OBJECT(val))
|
|
{
|
|
JSObject* obj;
|
|
if(!(obj = JSVAL_TO_OBJECT(val)))
|
|
return NULL;
|
|
if(OBJ_GET_CLASS(jsdc->dumbContext, obj))
|
|
jsdval->className = OBJ_GET_CLASS(jsdc->dumbContext, obj)->name;
|
|
}
|
|
return jsdval->className;
|
|
}
|
|
|
|
/***************************************************************************/
|
|
/***************************************************************************/
|
|
|
|
JSDValue*
|
|
jsd_GetPropertyName(JSDContext* jsdc, JSDProperty* jsdprop)
|
|
{
|
|
jsdprop->name->nref++;
|
|
return jsdprop->name;
|
|
}
|
|
|
|
JSDValue*
|
|
jsd_GetPropertyValue(JSDContext* jsdc, JSDProperty* jsdprop)
|
|
{
|
|
jsdprop->val->nref++;
|
|
return jsdprop->val;
|
|
}
|
|
|
|
JSDValue*
|
|
jsd_GetPropertyAlias(JSDContext* jsdc, JSDProperty* jsdprop)
|
|
{
|
|
if(jsdprop->alias)
|
|
jsdprop->alias->nref++;
|
|
return jsdprop->alias;
|
|
}
|
|
|
|
uintN
|
|
jsd_GetPropertyFlags(JSDContext* jsdc, JSDProperty* jsdprop)
|
|
{
|
|
return jsdprop->flags;
|
|
}
|
|
|
|
uintN
|
|
jsd_GetPropertyVarArgSlot(JSDContext* jsdc, JSDProperty* jsdprop)
|
|
{
|
|
return jsdprop->slot;
|
|
}
|
|
|
|
void
|
|
jsd_DropProperty(JSDContext* jsdc, JSDProperty* jsdprop)
|
|
{
|
|
JS_ASSERT(jsdprop->nref > 0);
|
|
if(0 == --jsdprop->nref)
|
|
{
|
|
JS_ASSERT(JS_CLIST_IS_EMPTY(&jsdprop->links));
|
|
DROP_CLEAR_VALUE(jsdc, jsdprop->val);
|
|
DROP_CLEAR_VALUE(jsdc, jsdprop->name);
|
|
DROP_CLEAR_VALUE(jsdc, jsdprop->alias);
|
|
free(jsdprop);
|
|
}
|
|
}
|