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Parse binary operators

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For now, they're all left associative.
This commit is contained in:
Joscha 2022-11-19 12:40:49 +01:00
parent 63f8026007
commit 408219073a
10 changed files with 99 additions and 39 deletions
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10
src/parser/lit.rs
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@ -7,7 +7,7 @@ use crate::builtin::Builtin;
use super::basic::{ident, space, Error};
fn builtin_lit() -> impl Parser<char, Builtin, Error = Error> {
fn builtin_lit() -> impl Parser<char, Builtin, Error = Error> + Clone {
just('\'').ignore_then(choice((
text::keyword("get").to(Builtin::Get),
text::keyword("set").to(Builtin::Set),
@ -78,14 +78,14 @@ pub fn num_lit() -> impl Parser<char, NumLit, Error = Error> + Clone {
.map_with_span(|(value, str), span| NumLit { value, str, span })
}
pub fn string_lit() -> impl Parser<char, StringLit, Error = Error> {
pub fn string_lit() -> impl Parser<char, StringLit, Error = Error> + Clone {
// TODO Parse string literals
filter(|_| false).map(|_| unreachable!())
}
pub fn table_lit_elem(
expr: impl Parser<char, Expr, Error = Error> + Clone,
) -> impl Parser<char, TableLitElem, Error = Error> {
) -> impl Parser<char, TableLitElem, Error = Error> + Clone {
let positional = expr
.clone()
.map(|value| TableLitElem::Positional(Box::new(value)));
@ -108,7 +108,7 @@ pub fn table_lit_elem(
pub fn table_lit(
expr: impl Parser<char, Expr, Error = Error> + Clone,
) -> impl Parser<char, TableLit, Error = Error> {
) -> impl Parser<char, TableLit, Error = Error> + Clone {
let elem = space()
.then(table_lit_elem(expr))
.then(space())
@ -130,7 +130,7 @@ pub fn table_lit(
pub fn lit(
expr: impl Parser<char, Expr, Error = Error> + Clone,
) -> impl Parser<char, Lit, Error = Error> {
) -> impl Parser<char, Lit, Error = Error> + Clone {
let nil = text::keyword("nil").map_with_span(|_, span| Lit::Nil(span));
let r#true = text::keyword("true").map_with_span(|_, span| Lit::Bool(true, span));
let r#false = text::keyword("false").map_with_span(|_, span| Lit::Bool(false, span));