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C++ JSScript::nesting方法代码示例

本文整理汇总了C++中JSScript::nesting方法的典型用法代码示例。如果您正苦于以下问题:C++ JSScript::nesting方法的具体用法?C++ JSScript::nesting怎么用?C++ JSScript::nesting使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在JSScript的用法示例。


在下文中一共展示了JSScript::nesting方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1:

void
js_PutCallObject(StackFrame *fp)
{
    CallObject &callobj = fp->callObj().asCall();
    JS_ASSERT(callobj.maybeStackFrame() == fp);
    JS_ASSERT_IF(fp->isEvalFrame(), fp->isStrictEvalFrame());
    JS_ASSERT(fp->isEvalFrame() == callobj.isForEval());

    /* Get the arguments object to snapshot fp's actual argument values. */
    if (fp->hasArgsObj()) {
        if (callobj.arguments().isMagic(JS_UNASSIGNED_ARGUMENTS))
            callobj.setArguments(ObjectValue(fp->argsObj()));
        js_PutArgsObject(fp);
    }

    JSScript *script = fp->script();
    Bindings &bindings = script->bindings;

    if (callobj.isForEval()) {
        JS_ASSERT(script->strictModeCode);
        JS_ASSERT(bindings.countArgs() == 0);

        /* This could be optimized as below, but keep it simple for now. */
        callobj.copyValues(0, NULL, bindings.countVars(), fp->slots());
    } else {
        JSFunction *fun = fp->fun();
        JS_ASSERT(script == callobj.getCalleeFunction()->script());
        JS_ASSERT(script == fun->script());

        unsigned n = bindings.countArgsAndVars();
        if (n > 0) {
            uint32_t nvars = bindings.countVars();
            uint32_t nargs = bindings.countArgs();
            JS_ASSERT(fun->nargs == nargs);
            JS_ASSERT(nvars + nargs == n);

            JSScript *script = fun->script();
            if (script->usesEval
#ifdef JS_METHODJIT
                || script->debugMode
#endif
                ) {
                callobj.copyValues(nargs, fp->formalArgs(), nvars, fp->slots());
            } else {
                /*
                 * For each arg & var that is closed over, copy it from the stack
                 * into the call object. We use initArg/VarUnchecked because,
                 * when you call a getter on a call object, js_NativeGetInline
                 * caches the return value in the slot, so we can't assert that
                 * it's undefined.
                 */
                uint32_t nclosed = script->nClosedArgs;
                for (uint32_t i = 0; i < nclosed; i++) {
                    uint32_t e = script->getClosedArg(i);
#ifdef JS_GC_ZEAL
                    callobj.setArg(e, fp->formalArg(e));
#else
                    callobj.initArgUnchecked(e, fp->formalArg(e));
#endif
                }

                nclosed = script->nClosedVars;
                for (uint32_t i = 0; i < nclosed; i++) {
                    uint32_t e = script->getClosedVar(i);
#ifdef JS_GC_ZEAL
                    callobj.setVar(e, fp->slots()[e]);
#else
                    callobj.initVarUnchecked(e, fp->slots()[e]);
#endif
                }
            }

            /*
             * Update the args and vars for the active call if this is an outer
             * function in a script nesting.
             */
            types::TypeScriptNesting *nesting = script->nesting();
            if (nesting && script->isOuterFunction) {
                nesting->argArray = callobj.argArray();
                nesting->varArray = callobj.varArray();
            }
        }

        /* Clear private pointers to fp, which is about to go away. */
        if (js_IsNamedLambda(fun)) {
            JSObject &env = callobj.enclosingScope();
            JS_ASSERT(env.asDeclEnv().maybeStackFrame() == fp);
            env.setPrivate(NULL);
        }
    }

    callobj.setStackFrame(NULL);
}
开发者ID:Anachid,项目名称:mozilla-central,代码行数:93,代码来源:ScopeObject.cpp


注:本文中的JSScript::nesting方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。