40 lines
655 B
Rust
40 lines
655 B
Rust
use crate::ast::expr::Expr;
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#[derive(Debug, Clone)]
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pub enum Stmt {
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/// let x = expr;
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Let {
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name: String,
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initializer: Expr,
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},
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/// 表达式语句：expr;
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ExprStmt(Expr),
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/// 代码块：{ ... }
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Block(Vec<Stmt>),
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/// if 语句
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If {
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condition: Expr,
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then_branch: Box<Stmt>,
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else_branch: Option<Box<Stmt>>,
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},
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/// while 循环
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While {
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condition: Expr,
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body: Box<Stmt>,
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},
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/// 函数声明
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Function {
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name: String,
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params: Vec<String>,
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body: Vec<Stmt>,
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},
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/// return expr?;
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Return(Option<Expr>),
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}
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