tseeker-pub/rust-crafting-interpreters-part-1
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AST - Added variable reference nodes

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This commit is contained in:
Emmanuel BENOîT 2022-12-31 15:42:10 +01:00
parent 447e0fe623
commit a90b1529ad
1 changed files with 7 additions and 9 deletions
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16
src/ast.rs
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@ -40,6 +40,9 @@ pub enum ExprNode {
/// A litteral value, represented by the corresponding token.
Litteral { value: Token },
/// A reference to a variable.
Variable { name: Token },
}
/* -------------------------------- *
@ -80,15 +83,10 @@ impl AstDumper for ExprNode {
left,
operator,
right,
} => {
format!("( {} {} {} )", operator.lexeme, left.dump(), right.dump())
}
Self::Unary { operator, right } => {
format!("( {} {} )", operator.lexeme, right.dump())
}
Self::Grouping { expression } => {
format!("( {} )", expression.dump())
}
} => format!("( {} {} {} )", operator.lexeme, left.dump(), right.dump()),
Self::Unary { operator, right } => format!("( {} {} )", operator.lexeme, right.dump()),
Self::Grouping { expression } => format!("( {} )", expression.dump()),
Self::Variable { name } => name.lexeme.clone(),
Self::Litteral { value } => {
if value.is_litteral() {
value.lexeme.clone()