2636cac6e4
There is no such thing as a "undefined literal" in JS - undefined is just a property on the global object with a value of undefined. This is pretty similar to NaN. var undefined = "foo"; is a perfectly fine AssignmentExpression :^)
51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
#include <AK/LogStream.h>
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#include <AK/String.h>
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#include <LibJS/Heap/Heap.h>
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#include <LibJS/Interpreter.h>
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#include <LibJS/Runtime/ConsoleObject.h>
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#include <LibJS/Runtime/DateConstructor.h>
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#include <LibJS/Runtime/ErrorConstructor.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/MathObject.h>
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#include <LibJS/Runtime/NativeFunction.h>
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#include <LibJS/Runtime/ObjectConstructor.h>
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#include <LibJS/Runtime/Value.h>
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namespace JS {
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GlobalObject::GlobalObject()
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{
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put_native_function("gc", gc);
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put_native_function("isNaN", is_nan);
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// FIXME: These are read-only in ES5
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put("NaN", js_nan());
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put("Infinity", js_infinity());
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put("undefined", js_undefined());
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put("console", heap().allocate<ConsoleObject>());
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put("Date", heap().allocate<DateConstructor>());
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put("Error", heap().allocate<ErrorConstructor>());
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put("Math", heap().allocate<MathObject>());
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put("Object", heap().allocate<ObjectConstructor>());
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}
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GlobalObject::~GlobalObject()
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{
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}
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Value GlobalObject::gc(Interpreter& interpreter)
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{
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dbg() << "Forced garbage collection requested!";
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interpreter.heap().collect_garbage();
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return js_undefined();
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}
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Value GlobalObject::is_nan(Interpreter& interpreter)
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{
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if (interpreter.argument_count() < 1)
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return js_undefined();
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return Value(interpreter.argument(0).to_number().is_nan());
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}
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}
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