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LibJS: Integrate iterator protocol into language features

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Finally use Symbol.iterator protocol in language features :) currently
only used in for-of loops and spread expressions, but will have more
uses later (Maps, Sets, Array.from, etc).
This commit is contained in:
Matthew Olsson 2020-07-13 08:27:20 -07:00 • committed by Andreas Kling
parent 4970c448bf
commit a51b2393f2
8 changed files with 187 additions and 127 deletions
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9
Libraries/LibJS/Runtime/IteratorOperations.h
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@ -26,6 +26,7 @@
#pragma once
#include <AK/Function.h>
#include <LibJS/Runtime/Object.h>
namespace JS {
@ -33,13 +34,13 @@ namespace JS {
// Common iterator operations defined in ECMA262 7.4
// https://tc39.es/ecma262/#sec-operations-on-iterator-objects
Object* get_iterator(Object& obj, String hint = "sync", Value method = {});
Object* get_iterator(GlobalObject&, Value value, String hint = "sync", Value method = {});
bool is_iterator_complete(Object& iterator_result);
Value create_iterator_result_object(Interpreter&, GlobalObject&, Value value, bool done);
Value iterator_next(Object& iterator, Value value = {});
Value iterator_value(Object& iterator_result);
Value iterator_step(Object& iterator);
Object* iterator_next(Object& iterator, Value value = {});
void iterator_close(Object& iterator);
void get_iterator_values(GlobalObject&, Value value, AK::Function<IterationDecision(Value&)> callback);
}