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Added skeleton of expression() parser

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greg 2015-07-24 04:15:28 -07:00
parent 1342a76786
commit 46999beabf
1 changed files with 8 additions and 1 deletions
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9
src/parser.rs
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@ -96,7 +96,10 @@ fn statements(input: &mut Tokens) -> ParseResult {
} }
fn statement(input: &mut Tokens) -> ParseResult { fn statement(input: &mut Tokens) -> ParseResult {
let_expression(input) match input.peek().map(|i| i.clone()) {
Some(&Keyword(Kw::Let)) => let_expression(input),
_ => expression(input)
}
} }
fn let_expression(input: &mut Tokens) -> ParseResult { fn let_expression(input: &mut Tokens) -> ParseResult {
@ -116,6 +119,10 @@ fn let_expression(input: &mut Tokens) -> ParseResult {
return ParseResult::Err("Bad parse in let_expression()".to_string()); return ParseResult::Err("Bad parse in let_expression()".to_string());
} }
fn expression(input: &mut Tokens) -> ParseResult {
ParseResult::Err("dame".to_string())
}
fn rhs(input: &mut Tokens) -> ParseResult { fn rhs(input: &mut Tokens) -> ParseResult {
let next = input.next(); let next = input.next();
if let Some(&Identifier(ref value)) = next { if let Some(&Identifier(ref value)) = next {