22 #include "function_object.h" 25 #include "array_object.h" 39 FunctionPrototypeImp::FunctionPrototypeImp(
ExecState *exec)
43 putDirect(toStringPropertyName,
44 new FunctionProtoFuncImp(exec,
this, FunctionProtoFuncImp::ToString, 0, toStringPropertyName),
46 static const Identifier applyPropertyName(
"apply");
47 putDirect(applyPropertyName,
48 new FunctionProtoFuncImp(exec,
this, FunctionProtoFuncImp::Apply, 2, applyPropertyName),
50 static const Identifier callPropertyName(
"call");
51 putDirect(callPropertyName,
52 new FunctionProtoFuncImp(exec,
this, FunctionProtoFuncImp::Call, 1, callPropertyName),
54 putDirect(lengthPropertyName, 0, DontDelete|ReadOnly|DontEnum);
57 FunctionPrototypeImp::~FunctionPrototypeImp()
61 bool FunctionPrototypeImp::implementsCall()
const 79 putDirect(lengthPropertyName, len, DontDelete|ReadOnly|DontEnum);
84 bool FunctionProtoFuncImp::implementsCall()
const 96 if (!thisObj.
isValid() || !thisObj.inherits(&InternalFunctionImp::info)) {
98 fprintf(stderr,
"attempted toString() call on null or non-function object\n");
101 exec->setException(err);
105 if (thisObj.inherits(&DeclaredFunctionImp::info)) {
106 DeclaredFunctionImp *fi =
static_cast<DeclaredFunctionImp*
> 108 return String(
"function " + fi->name().ustring() +
"(" +
109 fi->parameterString() +
") " + fi->body->toCode());
110 }
else if (thisObj.inherits(&InternalFunctionImp::info) &&
112 result =
String(
"\nfunction " + static_cast<InternalFunctionImp*>(thisObj.imp())->name().
ustring() +
"() {\n" 113 " [native code]\n}\n");
116 result =
String(
"[function]");
121 Value thisArg = args[0];
122 Value argArray = args[1];
127 exec->setException(err);
132 if (thisArg.
isA(NullType) || thisArg.
isA(UndefinedType))
138 if (!argArray.
isA(NullType) && !argArray.
isA(UndefinedType)) {
139 if (argArray.
isA(ObjectType) &&
144 unsigned int length = argArrayObj.
get(exec,lengthPropertyName).
toUInt32(exec);
145 for (
unsigned int i = 0; i < length; i++)
146 applyArgs.
append(argArrayObj.
get(exec,i));
150 exec->setException(err);
154 result = func.
call(exec,applyThis,applyArgs);
158 Value thisArg = args[0];
163 exec->setException(err);
168 if (thisArg.
isA(NullType) || thisArg.
isA(UndefinedType))
187 putDirect(prototypePropertyName, funcProto, DontEnum|DontDelete|ReadOnly);
190 putDirect(lengthPropertyName, NumberImp::one(), ReadOnly|DontDelete|DontEnum);
193 FunctionObjectImp::~FunctionObjectImp()
197 bool FunctionObjectImp::implementsConstruct()
const 207 int argsSize = args.
size();
210 }
else if (argsSize == 1) {
211 body = args[0].toString(exec);
213 p = args[0].toString(exec);
214 for (
int k = 1; k < argsSize - 1; k++)
215 p +=
"," + args[k].toString(exec);
216 body = args[argsSize-1].toString(exec);
223 FunctionBodyNode *progNode = Parser::parse(body.
data(),body.
size(),&source,&errLine,&errMsg);
228 bool cont = dbg->sourceParsed(exec,source->sid,body,errLine);
234 return Object(
new ObjectImp());
238 exec->interpreter()->imp()->addSourceCode(source);
245 exec->setException(err);
253 FunctionBodyNode *bodyNode = progNode;
261 const UChar *c = p.data();
262 int i = 0, params = 0;
265 while (*c ==
' ' && i < len)
267 if (Lexer::isIdentLetter(c->uc)) {
270 while (i < len && (Lexer::isIdentLetter(c->uc) ||
271 Lexer::isDecimalDigit(c->uc))) {
275 while (i < len && *c ==
' ')
281 }
else if (*c ==
',') {
289 I18N_NOOP(
"Syntax error in parameter list"),
291 exec->setException(err);
299 prototype.
put(exec, constructorPropertyName,
Value(fimp), DontEnum|DontDelete|ReadOnly);
300 fimp->put(exec, prototypePropertyName, prototype, DontEnum|DontDelete|ReadOnly);
304 bool FunctionObjectImp::implementsCall()
const 312 return construct(exec,args);
Value objects are act as wrappers ("smart pointers") around ValueImp objects and their descendents...
Base class for all function objects.
Object toObject(ExecState *exec) const
Performs the ToObject type conversion operation on this value (ECMA 9.9)
Object construct(ExecState *exec, const List &args)
Creates a new object based on this object.
void append(const Value &val)
Append an object to the end of the list.
Value get(ExecState *exec, const Identifier &propertyName) const
Retrieves the specified property from the object.
Interpreter * lexicalInterpreter() const
Returns the interpreter associated with the current scope's global object.
char * ascii() const
Convert the Unicode string to plain ASCII chars chopping of any higher bytes.
Interpreter * dynamicInterpreter() const
Returns the interpreter associated with this execution state.
static Object create(ExecState *exec, ErrorType errtype=GeneralError, const char *message=0, int lineno=-1, int sourceId=-1)
Factory method for error objects.
The initial value of Function.prototype (and thus all objects created with the Function constructor) ...
bool isA(Type t) const
Checks whether or not the value is of a particular tpye.
Represents an primitive Undefined value.
bool isNull() const
Returns the identfiers state of being unset.
Implementation class for functions implemented in JS.
const UChar * data() const
Represents an primitive String value.
static Object dynamicCast(const Value &v)
Converts a Value into an Object.
List copyTail() const
Make a copy of the list, omitting the first element.
bool implementsCall() const
Whether or not the object implements the call() method.
static const List & empty()
Returns a pointer to a static instance of an empty list.
Object & globalObject() const
Returns the object that is used as the global object during all script execution performed by this in...
bool isValid() const
Returns whether or not this is a valid value.
unsigned int toUInt32(ExecState *exec) const
Performs the ToUInt32 type conversion operation on this value (ECMA 9.6)
void put(ExecState *exec, const Identifier &propertyName, const Value &value, int attr=None)
Sets the specified property.
Value call(ExecState *exec, Object &thisObj, const List &args)
Calls this object as if it is a function.
static const Identifier & null()
Creates an empty Identifier.
Represents the current state of script execution.
Represents an Identifier for a Javascript object.
const UString & ustring() const
returns a UString of the identifier
Object builtinObject() const
Returns the builtin "Object" object.