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Created: Sat, Mar 14, 2:18 AM

targetinterpretation.h
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	/*
	* To change this license header, choose License Headers in Project Properties.
	* To change this template file, choose Tools \| Templates
	* and open the template in the editor.
	*/

	/*
	* File: targetstatic.h
	* Author: pgess
	*
	* Created on July 2, 2016, 1:25 PM
	*/

	#ifndef TARGETSTATIC_H
	#define TARGETSTATIC_H

	#include "ast.h"
	#include "compilation/targets.h"
	#include "transformations.h"
	#include "pass/interpretationpass.h"

	namespace xreate{ namespace compilation {

	class TargetInterpretation;
	class InterpretationScope;
	class InterpretatonFunction;

	template <>
	struct TargetInfo<TargetInterpretation> {
	typedef Expression Result;
	typedef InterpretationScope Scope;
	typedef InterpretatonFunction Function;
	};

	template<>
	struct TransformerInfo<TargetInterpretation> {
	static const int id = 1;
	};

	class InterpretationScope: public Scope<TargetInterpretation>{
	typedef Scope<TargetInterpretation> Parent;

	public:
	InterpretationScope(CodeScope* scope, Function<TargetInterpretation>* f): Parent(scope, f) {}
	Expression process(const Expression& expression) override;

	llvm::Value* compile(const Expression& expression, const Context& context);

	private:
	llvm::Value* compileHybrid(const InterpretationOperator& op, const Expression& expression, const Context& context);
	//llvm::Value* compilePartialFnCall(const Expression& expression, const Context& context);

	CodeScope* processOperatorIf(const Expression& expression);
	CodeScope* processOperatorSwitch(const Expression& expression);
	};

	class InterpretatonFunction: public Function<TargetInterpretation>{
	public:
	InterpretatonFunction(const ManagedFnPtr& function, Target<TargetInterpretation>* target);
	Expression process(const std::vector<Expression>& args);
	};

	/*
	* Partially interpreted function signature
	*/
	struct PIFSignature{
	ManagedFnPtr declaration;
	std::vector<Expression> bindings;
	};

	class PIFunctionUnit;

	class PIFunction: public InterpretatonFunction{
	public:
	PIFunctionUnit* functionUnit;
	PIFSignature signatureInstance;

	PIFunction(PIFSignature&& sig, size_t id, TargetInterpretation* target);
	llvm::Function* compile();
	};

	bool operator<(const PIFSignature& lhs, PIFunction* const rhs);
	bool operator<(PIFunction* const lhs, const PIFSignature& rhs);

	class TargetInterpretation: public Target<TargetInterpretation>, public Transformer{
	public:
	TargetInterpretation(AST* root, CompilePass* passCompilation): Target<TargetInterpretation>(root), pass(passCompilation){}

	//transformer:
	public:
	virtual llvm::Value* transform(const Expression& expression, llvm::Value* raw, const Context& ctx) override;
	virtual Expression transform(const Expression& expression, const Context& ctx) override;
	virtual bool isAcceptable(const Expression& expression) override;

	//target:
	public:
	InterpretatonFunction* getFunction(FunctionUnit* unit);
	PIFunction* getFunction(PIFSignature&& sig);

	private:
	std::set<PIFunction*, std::less<>> __pifunctions;
	std::map<FunctionUnit, InterpretatonFunction> __dictFunctionsByUnit;

	//self:
	public:
	CompilePass* pass;
	llvm::Value* compile(const Expression& expression, const Context& ctx);
	private:
	InterpretationScope* transformContext(const Context& c);
	};



	}}

	#endif /* TARGETSTATIC_H */

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