47 lines
1.8 KiB
Rust
47 lines
1.8 KiB
Rust
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// Licensed under the Apache License, Version 2.0
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// <LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0> or the MIT
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// license <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. All files in the project carrying such notice may not be copied,
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// modified, or distributed except according to those terms.
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#![cfg_attr(not(feature = "std"), no_std)]
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extern crate alloc;
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extern crate pest;
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extern crate pest_derive;
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#[cfg(feature = "grammar-extras")]
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use pest::Parser;
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use pest_derive::Parser;
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#[derive(Parser)]
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#[grammar = "../tests/implicit.pest"]
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struct TestImplicitParser;
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#[test]
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#[cfg(feature = "grammar-extras")]
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fn test_implicit_whitespace() {
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// this failed to parse due to a bug in the optimizer
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// see: https://github.com/pest-parser/pest/issues/762#issuecomment-1375374868
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let successful_parse = TestImplicitParser::parse(Rule::program, "a a");
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assert!(successful_parse.is_ok());
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// dbg!(&successful_parse);
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let pairs = successful_parse.unwrap();
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assert!(pairs.find_first_tagged("head").is_some());
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assert!(pairs.find_first_tagged("tail").is_some());
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assert!(pairs.find_first_tagged("more_and").is_none());
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assert!(pairs.find_first_tagged("more_comp").is_none());
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assert!(pairs.find_first_tagged("more_array").is_none());
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assert_eq!(pairs.clone().find_tagged("one_and").count(), 2);
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assert_eq!(pairs.clone().find_tagged("one_comp").count(), 2);
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assert_eq!(pairs.find_tagged("one_array").count(), 2);
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}
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#[test]
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#[cfg(feature = "grammar-extras")]
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fn test_implicit_whitespace_multitag() {
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let successful_parse = TestImplicitParser::parse(Rule::program, "a a a");
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assert!(successful_parse.is_ok());
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let pairs = successful_parse.unwrap();
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assert_eq!(pairs.clone().find_tagged("tail").count(), 2);
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}
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