29 lines
742 B
Rust
29 lines
742 B
Rust
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use crate::{
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ast::expression::expression_node::ExpressionNode,
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ast::parser::{InnerASTParsingError, Parser, Result},
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lexer::token::{self, TokenType},
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};
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use super::Statement;
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#[derive(Debug)]
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pub struct ExpressionStatement(pub ExpressionNode);
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impl ExpressionStatement {
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pub fn new(expr: ExpressionNode) -> Self {
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Self(expr)
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}
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}
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impl<'a, T: Iterator<Item = token::Token<'a>>> Parser<'a, T> {
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pub fn expression_statement(&mut self) -> Result<Statement> {
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let expr = self.expression()?;
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let token = self.token_iter.peek();
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if let TokenType::Semicolon = token.token_type {
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self.token_iter.next();
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Ok(ExpressionStatement::new(expr).into())
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} else {
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Err(token.location.wrap(InnerASTParsingError::ExpectedSemi))
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}
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}
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}
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