ExprIf.hpp

浏览该文件的文档.

 
 
#pragma once
 
#include "AstGlobal.h"
#include "AstScript/Expr.hpp"
#include "AstScript/ExprBlock.hpp"
#include "AstUtil/SharedPtr.hpp"
#include <vector>
 
AST_NAMESPACE_BEGIN
 
class AST_SCRIPT_API ExprIf: public Expr
{
public:
    AST_EXPR(ExprIf)
    struct ConditionBranch {
        SharedPtr<Expr> condition;  
        SharedPtr<Expr> block;      
    };
    using ConditionBranchVector = std::vector<ConditionBranch>;
 
    ExprIf();
 
 
    ExprIf(Expr* condition, Expr* block);
 
    
    ~ExprIf() override = default;
 
    Value* eval() const override;
 
    errc_t setValue(Value* val) override;
 
    std::string getExpression(Object* context=nullptr) const override;
 
    void addElseif(Expr* condition, Expr* block);
    
    void setElse(Expr* block);
    
    const ConditionBranchVector& conditionBranches() const { return conditionBranches_; }
    Expr* elseBlock() const { return elseBlock_.get(); }
private:
    std::vector<ConditionBranch> conditionBranches_;  
    SharedPtr<Expr> elseBlock_;                       
};
 
 
 
AST_NAMESPACE_END