Foo::s_info should be Foo::info(), so that you can change how the s_info is actually...
[WebKit-https.git] / Source / WebCore / bridge / runtime_method.cpp
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25  
26 #include "config.h"
27 #include "runtime_method.h"
28
29 #include "JSDOMBinding.h"
30 #include "JSHTMLElement.h"
31 #include "JSPluginElementFunctions.h"
32 #include "runtime_object.h"
33 #include <runtime/Error.h>
34 #include <runtime/FunctionPrototype.h>
35
36 using namespace WebCore;
37
38 namespace JSC {
39
40 using namespace Bindings;
41
42 const ClassInfo RuntimeMethod::s_info = { "RuntimeMethod", &InternalFunction::s_info, 0, 0, CREATE_METHOD_TABLE(RuntimeMethod) };
43
44 RuntimeMethod::RuntimeMethod(JSGlobalObject* globalObject, Structure* structure, Method* method)
45     // Callers will need to pass in the right global object corresponding to this native object "method".
46     : InternalFunction(globalObject, structure)
47     , m_method(method)
48 {
49 }
50
51 void RuntimeMethod::finishCreation(VM& vm, const String& ident)
52 {
53     Base::finishCreation(vm, ident);
54     ASSERT(inherits(info()));
55 }
56
57 JSValue RuntimeMethod::lengthGetter(ExecState*, JSValue slotBase, PropertyName)
58 {
59     RuntimeMethod* thisObj = static_cast<RuntimeMethod*>(asObject(slotBase));
60
61     return jsNumber(thisObj->m_method->numParameters());
62 }
63
64 bool RuntimeMethod::getOwnPropertySlot(JSObject* object, ExecState* exec, PropertyName propertyName, PropertySlot &slot)
65 {
66     RuntimeMethod* thisObject = jsCast<RuntimeMethod*>(object);
67     if (propertyName == exec->propertyNames().length) {
68         slot.setCacheableCustom(thisObject, thisObject->lengthGetter);
69         return true;
70     }
71     
72     return InternalFunction::getOwnPropertySlot(thisObject, exec, propertyName, slot);
73 }
74
75 bool RuntimeMethod::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, PropertyName propertyName, PropertyDescriptor &descriptor)
76 {
77     RuntimeMethod* thisObject = jsCast<RuntimeMethod*>(object);
78     if (propertyName == exec->propertyNames().length) {
79         PropertySlot slot(thisObject);
80         slot.setCustom(thisObject, lengthGetter);
81         descriptor.setDescriptor(slot.getValue(exec, propertyName), ReadOnly | DontDelete | DontEnum);
82         return true;
83     }
84     
85     return InternalFunction::getOwnPropertyDescriptor(thisObject, exec, propertyName, descriptor);
86 }
87
88 static EncodedJSValue JSC_HOST_CALL callRuntimeMethod(ExecState* exec)
89 {
90     RuntimeMethod* method = static_cast<RuntimeMethod*>(exec->callee());
91
92     if (!method->method())
93         return JSValue::encode(jsUndefined());
94
95     RefPtr<Instance> instance;
96
97     JSValue thisValue = exec->hostThisValue();
98     if (thisValue.inherits(RuntimeObject::info())) {
99         RuntimeObject* runtimeObject = static_cast<RuntimeObject*>(asObject(thisValue));
100         instance = runtimeObject->getInternalInstance();
101         if (!instance) 
102             return JSValue::encode(RuntimeObject::throwInvalidAccessError(exec));
103     } else {
104         // Calling a runtime object of a plugin element?
105         if (thisValue.inherits(JSHTMLElement::info())) {
106             HTMLElement* element = jsCast<JSHTMLElement*>(asObject(thisValue))->impl();
107             instance = pluginInstance(element);
108         }
109         if (!instance)
110             return throwVMTypeError(exec);
111     }
112     ASSERT(instance);
113
114     instance->begin();
115     JSValue result = instance->invokeMethod(exec, method);
116     instance->end();
117     return JSValue::encode(result);
118 }
119
120 CallType RuntimeMethod::getCallData(JSCell*, CallData& callData)
121 {
122     callData.native.function = callRuntimeMethod;
123     return CallTypeHost;
124 }
125
126 }