swamp-parser 0.2.26

Parses Swamp programming language source code into an Abstract Syntax Tree (AST) defined in the `swamp-ast` crate, using the pest parsing library.
Documentation 
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/*
 * Copyright (c) Peter Bjorklund. All rights reserved. https://github.com/swamp/swamp
 * Licensed under the MIT License. See LICENSE in the project root for license information.
 */
use swamp_parser::AstParser;
use tracing::warn;

pub fn check(script: &str, expected_output: &str) {
    let parser = AstParser {};

    let program = parser.parse_module(script).expect("Failed to parse script");

    let formatted_output = format!("{program:#?}");

    let actual = formatted_output
        .lines()
        .map(str::trim)
        .filter(|line| !line.is_empty())
        .collect::<Vec<_>>()
        .join("\n");

    let expected = expected_output
        .lines()
        .map(str::trim)
        .filter(|line| !line.is_empty())
        .collect::<Vec<_>>()
        .join("\n");

    assert!(
        (actual == expected),
        "\nExpected output:\n\n{expected}\n\nActual output:\n\n{actual}\n"
    );

    let mut differences = Vec::new();

    for (i, (exp, act)) in expected.lines().zip(actual.lines()).enumerate() {
        if exp != act {
            differences.push((i + 1, exp, act));
        }
    }

    if !differences.is_empty() {
        for (line_num, exp, act) in &differences {
            warn!(
                "\nDifference at line {}: expected \n{}\n, got \n{}",
                line_num, exp, act
            );
        }
        panic!("Differences found between expected and actual output");
    }
}