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This commit is contained in:
John Doty 2024-03-08 11:03:01 -08:00
parent 5deceec006
commit 977e3c17e5
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378
third-party/vendor/winnow/src/macros/test.rs vendored Normal file
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use crate::ascii::dec_uint;
use crate::combinator::dispatch;
use crate::combinator::empty;
use crate::combinator::fail;
use crate::combinator::seq;
use crate::error::ErrMode;
use crate::error::ErrorKind;
use crate::error::ParserError;
use crate::prelude::*;
use crate::token::any;
#[test]
fn dispatch_basics() {
fn escape_seq_char(input: &mut &str) -> PResult<char> {
dispatch! {any;
'b' => empty.value('\u{8}'),
'f' => empty.value('\u{c}'),
'n' => empty.value('\n'),
'r' => empty.value('\r'),
't' => empty.value('\t'),
'\\' => empty.value('\\'),
'"' => empty.value('"'),
_ => fail::<_, char, _>,
}
.parse_next(input)
}
assert_eq!(escape_seq_char.parse_peek("b123"), Ok(("123", '\u{8}')));
assert_eq!(
escape_seq_char.parse_peek("error"),
Err(ErrMode::Backtrack(ParserError::from_error_kind(
&"rror",
ErrorKind::Fail
)))
);
assert_eq!(
escape_seq_char.parse_peek(""),
Err(ErrMode::Backtrack(ParserError::from_error_kind(
&"",
ErrorKind::Fail
)))
);
}
#[test]
fn seq_struct_basics() {
#[derive(Debug, PartialEq)]
struct Point {
x: u32,
y: u32,
}
fn parser(input: &mut &str) -> PResult<Point> {
seq! {
Point {
x: dec_uint,
_: ',',
y: dec_uint,
}
}
.parse_next(input)
}
assert_eq!(
parser.parse_peek("123,4 remaining"),
Ok((" remaining", Point { x: 123, y: 4 },)),
);
assert_eq!(
parser.parse_peek("123, remaining"),
Err(ErrMode::Backtrack(ParserError::from_error_kind(
&" remaining",
ErrorKind::Fail
)))
);
assert_eq!(
parser.parse_peek(""),
Err(ErrMode::Backtrack(ParserError::from_error_kind(
&"",
ErrorKind::Fail
)))
);
}
#[test]
fn seq_struct_default_init() {
#[derive(Debug, PartialEq, Default)]
struct Point {
x: u32,
y: u32,
z: u32,
}
fn parser(input: &mut &str) -> PResult<Point> {
seq! {
Point {
x: dec_uint,
_: ',',
y: dec_uint,
..Default::default()
}
}
.parse_next(input)
}
assert_eq!(
parser.parse_peek("123,4 remaining"),
Ok((" remaining", Point { x: 123, y: 4, z: 0 },)),
);
assert_eq!(
parser.parse_peek("123, remaining"),
Err(ErrMode::Backtrack(ParserError::from_error_kind(
&" remaining",
ErrorKind::Fail
)))
);
assert_eq!(
parser.parse_peek(""),
Err(ErrMode::Backtrack(ParserError::from_error_kind(
&"",
ErrorKind::Fail
)))
);
}
#[test]
fn seq_struct_trailing_comma_elided() {
#![allow(dead_code)]
#[derive(Debug, PartialEq)]
struct Point {
x: u32,
y: u32,
}
fn parser(input: &mut &str) -> PResult<Point> {
seq! {
Point {
x: dec_uint,
_: ',',
y: dec_uint,
_: empty,
}
}
.parse_next(input)
}
}
#[test]
fn seq_struct_no_trailing_comma() {
#![allow(dead_code)]
#[derive(Debug, PartialEq)]
struct Point {
x: u32,
y: u32,
}
fn parser(input: &mut &str) -> PResult<Point> {
seq! {
Point {
x: dec_uint,
_: ',',
y: dec_uint
}
}
.parse_next(input)
}
}
#[test]
fn seq_struct_no_trailing_comma_elided() {
#![allow(dead_code)]
#[derive(Debug, PartialEq)]
struct Point {
x: u32,
y: u32,
}
fn parser(input: &mut &str) -> PResult<Point> {
seq! {
Point {
x: dec_uint,
_: ',',
y: dec_uint,
_: empty
}
}
.parse_next(input)
}
}
#[test]
fn seq_tuple_struct_basics() {
#[derive(Debug, PartialEq)]
struct Point(u32, u32);
fn parser(input: &mut &str) -> PResult<Point> {
seq! {
Point(
dec_uint,
_: ',',
dec_uint,
)
}
.parse_next(input)
}
assert_eq!(
parser.parse_peek("123,4 remaining"),
Ok((" remaining", Point(123, 4),)),
);
assert_eq!(
parser.parse_peek("123, remaining"),
Err(ErrMode::Backtrack(ParserError::from_error_kind(
&" remaining",
ErrorKind::Fail
)))
);
assert_eq!(
parser.parse_peek(""),
Err(ErrMode::Backtrack(ParserError::from_error_kind(
&"",
ErrorKind::Fail
)))
);
}
#[test]
fn seq_tuple_struct_trailing_comma_elided() {
#![allow(dead_code)]
#[derive(Debug, PartialEq)]
struct Point(u32, u32);
fn parser(input: &mut &str) -> PResult<Point> {
seq! {
Point(
dec_uint,
_: ',',
dec_uint,
_: empty,
)
}
.parse_next(input)
}
}
#[test]
fn seq_tuple_struct_no_trailing_comma() {
#![allow(dead_code)]
#[derive(Debug, PartialEq)]
struct Point(u32, u32);
fn parser(input: &mut &str) -> PResult<Point> {
seq! {
Point(
dec_uint,
_: ',',
dec_uint
)
}
.parse_next(input)
}
}
#[test]
fn seq_tuple_struct_no_trailing_comma_elided() {
#![allow(dead_code)]
#[derive(Debug, PartialEq)]
struct Point(u32, u32);
fn parser(input: &mut &str) -> PResult<Point> {
seq! {
Point(
dec_uint,
_: ',',
dec_uint,
_: empty
)
}
.parse_next(input)
}
}
#[test]
fn seq_tuple_basics() {
fn parser(input: &mut &str) -> PResult<(u32, u32)> {
seq! {
(
dec_uint,
_: ',',
dec_uint,
)
}
.parse_next(input)
}
assert_eq!(
parser.parse_peek("123,4 remaining"),
Ok((" remaining", (123, 4),)),
);
assert_eq!(
parser.parse_peek("123, remaining"),
Err(ErrMode::Backtrack(ParserError::from_error_kind(
&" remaining",
ErrorKind::Fail
)))
);
assert_eq!(
parser.parse_peek(""),
Err(ErrMode::Backtrack(ParserError::from_error_kind(
&"",
ErrorKind::Fail
)))
);
}
#[test]
fn seq_tuple_trailing_comma_elided() {
#![allow(dead_code)]
fn parser(input: &mut &str) -> PResult<(u32, u32)> {
seq! {
(
dec_uint,
_: ',',
dec_uint,
_: empty,
)
}
.parse_next(input)
}
}
#[test]
fn seq_tuple_no_trailing_comma() {
#![allow(dead_code)]
fn parser(input: &mut &str) -> PResult<(u32, u32)> {
seq! {
(
dec_uint,
_: ',',
dec_uint
)
}
.parse_next(input)
}
}
#[test]
fn seq_tuple_no_trailing_comma_elided() {
#![allow(dead_code)]
fn parser(input: &mut &str) -> PResult<(u32, u32)> {
seq! {
(
dec_uint,
_: ',',
dec_uint,
_: empty
)
}
.parse_next(input)
}
}
#[test]
fn seq_tuple_no_parens() {
#![allow(dead_code)]
fn parser(input: &mut &str) -> PResult<(u32, u32)> {
seq! (
dec_uint,
_: ',',
dec_uint,
)
.parse_next(input)
}
}