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Add identifier parsing for BinaryOp

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Vili Sinervä 2025-01-28 16:55:34 +02:00
parent ca5204d4b2
commit b10f5f39fd
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1 changed files with 15 additions and 2 deletions
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17
src/compiler/parser.rs
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@ -78,10 +78,23 @@ fn parse_int_literal<'source>(pos: &mut usize, tokens: &[Token]) -> Expression<'
)
}
fn parse_identifier<'source>(pos: &mut usize, tokens: &[Token<'source>]) -> Expression<'source> {
let token = next_expect_type(pos, tokens, TokenType::Identifier);
Identifier(token.text)
}
fn parse_term<'source>(pos: &mut usize, tokens: &[Token<'source>]) -> Expression<'source> {
match peek(pos, tokens).token_type {
TokenType::Integer => parse_int_literal(pos, tokens),
TokenType::Identifier => parse_identifier(pos, tokens),
_ => panic!("Unexpected token {}", peek(pos, tokens)),
}
}
fn parse_expression<'source>(pos: &mut usize, tokens: &[Token<'source>]) -> Expression<'source> {
let left = parse_int_literal(pos, tokens);
let left = parse_term(pos, tokens);
let operator_token = next_expect_strings(pos, tokens, &vec!["+", "-"]);
let right = parse_int_literal(pos, tokens);
let right = parse_term(pos, tokens);
Expression::BinaryOp(Box::new(left), operator_token.text, Box::new(right))
}