forked from PuqiAR/Fig-TreeWalker
96 lines
3.0 KiB
C++
96 lines
3.0 KiB
C++
#pragma once
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#include <Value/BaseValue.hpp>
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#include <Ast/functionParameters.hpp>
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#include <context_forward.hpp>
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#include <atomic>
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namespace Fig
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{
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class Value;
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/* complex objects */
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struct FunctionStruct
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{
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std::size_t id;
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Ast::FunctionParameters paras;
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TypeInfo retType;
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Ast::BlockStatement body;
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bool isBuiltin = false;
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std::function<Value(const std::vector<Value> &)> builtin;
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int builtinParamCount = -1;
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std::shared_ptr<Context> closureContext;
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FunctionStruct(Ast::FunctionParameters _paras, TypeInfo _retType, Ast::BlockStatement _body, ContextPtr _closureContext) :
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id(nextId()), // 分配唯一 ID
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paras(std::move(_paras)),
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retType(std::move(_retType)),
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body(std::move(_body)),
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closureContext(std::move(_closureContext))
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{
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}
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FunctionStruct(std::function<Value(const std::vector<Value> &)> fn, int argc);
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FunctionStruct(const FunctionStruct &other) :
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id(other.id),
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paras(other.paras),
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retType(other.retType),
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body(other.body),
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isBuiltin(other.isBuiltin),
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builtin(other.builtin),
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builtinParamCount(other.builtinParamCount),
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closureContext(other.closureContext) {}
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FunctionStruct &operator=(const FunctionStruct &other) = default;
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FunctionStruct(FunctionStruct &&) noexcept = default;
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FunctionStruct &operator=(FunctionStruct &&) noexcept = default;
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bool operator==(const FunctionStruct &other) const noexcept
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{
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return id == other.id;
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}
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bool operator!=(const FunctionStruct &other) const noexcept
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{
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return !(*this == other);
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}
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private:
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static std::size_t nextId()
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{
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static std::atomic<std::size_t> counter{1};
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return counter++;
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}
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};
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class Function final : public __ValueWrapper<FunctionStruct>
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{
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public:
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Function(const FunctionStruct &x) :
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__ValueWrapper(ValueType::Function)
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{
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data = std::make_unique<FunctionStruct>(x);
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}
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Function(Ast::FunctionParameters paras, TypeInfo ret, Ast::BlockStatement body, ContextPtr closureContext) :
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__ValueWrapper(ValueType::Function)
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{
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data = std::make_unique<FunctionStruct>(
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std::move(paras), std::move(ret), std::move(body), std::move(closureContext));
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}
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Function(std::function<Value(const std::vector<Value> &)> fn, int argc);
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bool operator==(const Function &other) const noexcept
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{
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if (!data || !other.data) return false;
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return *data == *other.data; // call -> FunctionStruct::operator== (based on ID comparing)
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}
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Function(const Function &) = default;
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Function(Function &&) noexcept = default;
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Function &operator=(const Function &) = default;
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Function &operator=(Function &&) noexcept = default;
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};
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} // namespace Fig
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