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fix parser test

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This commit is contained in:
nora 2021-12-31 14:23:32 +01:00
parent bc218efe0e
commit 92b40b17ed
2 changed files with 64 additions and 27 deletions
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2
src/parse.rs
View file

@ -3,7 +3,7 @@
//! It's a handwritten recursive descent parser. It has an internal peekable iterator from where
//! it gets its next tokens. Only a lookahead of one is required.
#[cfg(test_ignore_lol)]
#[cfg(test)]
mod test;
use crate::ast::*;

89
src/parse/test.rs
View file

@ -1,14 +1,20 @@
//! Test for the parser
//!
//! These tests are horrible and break all the time. Never do it like this again.
//! That said it's too late to fix it.
use crate::errors::Span;
use crate::parse::Parser;
use crate::RtAlloc;
use bumpalo::Bump;
use prelude::*;
mod prelude {
pub(super) use super::{parser, test_literal_bin_op, test_number_literal, token};
pub(super) use super::{parser, rt, test_literal_bin_op, test_number_literal, token};
pub(super) use crate::ast::{Expr, Stmt};
pub(super) use crate::lex::TokenKind::*;
pub type Token = crate::lex::Token<'static>;
pub type TokenType = crate::lex::TokenKind<'static>;
pub type Token = crate::lex::Token;
pub type TokenType = crate::lex::TokenKind;
pub(super) use bumpalo::Bump;
}
@ -19,10 +25,12 @@ fn token(kind: TokenType) -> Token {
}
}
fn parser<'ast>(
tokens: std::vec::Vec<Token>,
alloc: &'ast Bump,
) -> Parser<'static, 'ast, std::vec::IntoIter<Token>>
fn rt() -> RtAlloc {
// SAFETY: this is just a test what could go wrong
unsafe { RtAlloc::new() }
}
fn parser(tokens: std::vec::Vec<Token>, alloc: &Bump) -> Parser<std::vec::IntoIter<Token>>
where {
Parser {
tokens: tokens.into_iter().peekable(),
@ -51,6 +59,7 @@ fn test_number_literal<F: FnOnce(Vec<Token>, &Bump) -> Expr>(parser: F) {
mod assignment {
use super::prelude::*;
use crate::parse::test::rt;
use bumpalo::Bump;
fn parse_assignment(tokens: Vec<Token>, alloc: &Bump) -> Stmt {
@ -60,7 +69,10 @@ mod assignment {
#[test]
fn simple() {
let tokens = [Ident("hugo"), Equal, Number(10.0), Semi].map(token).into();
let mut rt = rt();
let tokens = [Ident(rt.intern_string("hugo")), Equal, Number(10.0), Semi]
.map(token)
.into();
let alloc = Bump::new();
let ast = parse_assignment(tokens, &alloc);
@ -69,10 +81,11 @@ mod assignment {
#[test]
fn call_expr() {
let mut rt = rt();
let tokens = [
Ident("hugo"),
Ident(rt.intern_string("hugo")),
Dot,
Ident("age"),
Ident(rt.intern_string("age")),
Equal,
Number(2021.0),
Minus,
@ -98,9 +111,17 @@ mod r#fn {
#[test]
fn empty() {
let tokens = [Fn, Ident("empty"), ParenO, ParenC, BraceO, BraceC]
.map(token)
.into();
let mut rt = rt();
let tokens = [
Fn,
Ident(rt.intern_string("empty")),
ParenO,
ParenC,
BraceO,
BraceC,
]
.map(token)
.into();
let alloc = Bump::new();
let ast = parse_fn(tokens, &alloc);
@ -109,13 +130,14 @@ mod r#fn {
#[test]
fn params_body() {
let mut rt = rt();
let tokens = [
Fn,
Ident("empty"),
Ident(rt.intern_string("empty")),
ParenO,
Ident("a"),
Ident(rt.intern_string("a")),
Comma,
Ident("b"),
Ident(rt.intern_string("b")),
ParenC,
BraceO,
Number(10.0),
@ -550,7 +572,14 @@ mod call {
#[test]
fn field_simple() {
let tokens = [Ident("hugo"), Dot, Ident("name")].map(token).into();
let mut rt = rt();
let tokens = [
Ident(rt.intern_string("hugo")),
Dot,
Ident(rt.intern_string("name")),
]
.map(token)
.into();
let alloc = Bump::new();
let ast = parse_call(tokens, &alloc);
insta::assert_debug_snapshot!(ast);
@ -558,7 +587,10 @@ mod call {
#[test]
fn simple() {
let tokens = [Ident("print"), ParenO, ParenC].map(token).into();
let mut rt = rt();
let tokens = [Ident(rt.intern_string("print")), ParenO, ParenC]
.map(token)
.into();
let alloc = Bump::new();
let ast = parse_call(tokens, &alloc);
insta::assert_debug_snapshot!(ast);
@ -566,8 +598,9 @@ mod call {
#[test]
fn fn_args() {
let mut rt = rt();
let tokens = [
Ident("print"),
Ident(rt.intern_string("print")),
ParenO,
Number(10.0),
Comma,
@ -584,12 +617,13 @@ mod call {
#[test]
fn nested() {
let mut rt = rt();
let tokens = [
Ident("hugo"),
Ident(rt.intern_string("hugo")),
Dot,
Ident("name"),
Ident(rt.intern_string("name")),
Dot,
Ident("print"),
Ident(rt.intern_string("print")),
ParenO,
ParenC,
]
@ -602,9 +636,10 @@ mod call {
#[test]
fn with_exprs() {
let mut rt = rt();
// print((10 + 5).abs())
let tokens = [
Ident("print"),
Ident(rt.intern_string("print")),
ParenO,
ParenO,
Number(10.0),
@ -612,7 +647,7 @@ mod call {
Number(5.0),
ParenC,
Dot,
Ident("abs"),
Ident(rt.intern_string("abs")),
ParenO,
ParenC,
ParenC,
@ -635,7 +670,8 @@ mod primary {
#[test]
fn ident_test() {
let tokens = [Ident("tokens")].map(token).into();
let mut rt = rt();
let tokens = [Ident(rt.intern_string("tokens"))].map(token).into();
let alloc = Bump::new();
let ast = parse_primary(tokens, &alloc);
insta::assert_debug_snapshot!(ast);
@ -651,7 +687,8 @@ mod primary {
#[test]
fn number() {
let tokens = [String("uwu".to_string())].map(token).into();
let mut rt = rt();
let tokens = [String(rt.intern_string("uwu"))].map(token).into();
let alloc = Bump::new();
let ast = parse_primary(tokens, &alloc);
insta::assert_debug_snapshot!(ast);