67 lines
1.2 KiB
C++
67 lines
1.2 KiB
C++
#ifndef STMT_HH
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#define STMT_HH
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#include "expr.hh"
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#include <memory>
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#include <variant>
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struct Stmt;
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struct _Expression;
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struct _Print;
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struct _Var;
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enum class StmtType {
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EXPRESSION,
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PRINT,
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VAR,
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};
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using StmtVariant = std::variant<
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std::shared_ptr<_Expression>,
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std::shared_ptr<_Print>,
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std::shared_ptr<_Var>
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>;
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#define Expression(EXPR) (Stmt{StmtType::EXPRESSION, std::make_shared<_Expression>(EXPR)})
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#define Print(EXPR) (Stmt{StmtType::PRINT, std::make_shared<_Print>(EXPR)})
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#define Var(NAME, EXPR) (Stmt{StmtType::VAR, std::make_shared<_Var>(NAME, EXPR)})
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struct Stmt {
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Stmt(StmtType type, StmtVariant value);
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// Copy constructor
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Stmt(const Stmt &other);
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// Move constructor
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Stmt(Stmt &&other) noexcept;
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// Copy assignment
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Stmt &operator=(const Stmt &other);
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// Move assignment
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Stmt &operator=(Stmt &&other) noexcept;
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~Stmt() = default;
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StmtType type;
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StmtVariant value;
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};
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struct _Expression {
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_Expression(const Expr &expr) : expr{expr} {}
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Expr expr;
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};
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struct _Print {
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_Print(const Expr &expr) : expr{expr} {}
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Expr expr;
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};
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struct _Var {
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_Var(const Token &name, const Expr &expr) : name{name}, expr{expr} {}
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Token name;
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Expr expr;
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};
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#endif
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