75 lines
1.8 KiB
Rust
75 lines
1.8 KiB
Rust
|
// pest. The Elegant Parser
|
||
|
|
//
|
||
|
|
// Licensed under the Apache License, Version 2.0
|
||
|
|
// <LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0> or the MIT
|
||
|
|
// license <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
||
|
|
// option. All files in the project carrying such notice may not be copied,
|
||
|
|
// modified, or distributed except according to those terms.
|
||
|
|
|
||
|
|
#![cfg_attr(not(feature = "std"), no_std)]
|
||
|
|
extern crate alloc;
|
||
|
|
#[cfg(not(feature = "std"))]
|
||
|
|
use alloc::{format, vec, vec::Vec};
|
||
|
|
|
||
|
|
#[macro_use]
|
||
|
|
extern crate pest;
|
||
|
|
extern crate pest_derive;
|
||
|
|
|
||
|
|
#[cfg(feature = "grammar-extras")]
|
||
|
|
use pest_derive::Parser;
|
||
|
|
|
||
|
|
/// Surround-string parser.
|
||
|
|
///
|
||
|
|
/// This is a simple grammar of string parsing, where the strings end with a different delimiter char than what they
|
||
|
|
/// start with. The allowable forms are:
|
||
|
|
///
|
||
|
|
/// ```text
|
||
|
|
/// (foo)
|
||
|
|
/// <bar>
|
||
|
|
/// ```
|
||
|
|
///
|
||
|
|
/// To keep things simple, strings do not support any escape sequences.
|
||
|
|
#[derive(Parser)]
|
||
|
|
#[grammar = "../tests/surround.pest"]
|
||
|
|
#[cfg(feature = "grammar-extras")]
|
||
|
|
pub struct SurroundParser;
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
#[cfg(feature = "grammar-extras")]
|
||
|
|
fn surround_parenthesis() {
|
||
|
|
parses_to! {
|
||
|
|
parser: SurroundParser,
|
||
|
|
input: "(hello world)",
|
||
|
|
rule: Rule::Quote,
|
||
|
|
tokens: [
|
||
|
|
QuoteChars(1, 12)
|
||
|
|
]
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
#[cfg(feature = "grammar-extras")]
|
||
|
|
fn surround_angle_brackets() {
|
||
|
|
parses_to! {
|
||
|
|
parser: SurroundParser,
|
||
|
|
input: "<hello world>",
|
||
|
|
rule: Rule::Quote,
|
||
|
|
tokens: [
|
||
|
|
QuoteChars(1, 12)
|
||
|
|
]
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
#[cfg(feature = "grammar-extras")]
|
||
|
|
fn start_with_one_end_with_other() {
|
||
|
|
fails_with! {
|
||
|
|
parser: SurroundParser,
|
||
|
|
input: "(hello world>",
|
||
|
|
rule: Rule::Quote,
|
||
|
|
positives: vec![],
|
||
|
|
negatives: vec![],
|
||
|
|
pos: 0
|
||
|
|
}
|
||
|
|
}
|