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#![cfg_attr(coverage_nightly, coverage(off))]
/// Language detection for mutation testing
///
/// Detects programming language from file extensions to enable multi-language
/// mutation testing support.
///
/// Sprint 63 - Multi-Language Mutation Testing Support
use std::path::Path;
/// Supported programming languages for mutation testing
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum Language {
/// Rust programming language
Rust,
/// Python programming language
Python,
/// TypeScript programming language
TypeScript,
/// JavaScript programming language
JavaScript,
/// Go programming language
Go,
/// C++ programming language
Cpp,
/// Unsupported or unknown language
Unsupported,
}
impl Language {
/// Detect language from file extension
///
/// # Arguments
/// * `path` - Path to the source file
///
/// # Returns
/// The detected language, or `Language::Unsupported` if not recognized
///
/// # Examples
/// ```
/// use std::path::Path;
/// use pmat::services::mutation::language_detector::Language;
///
/// let lang = Language::from_extension(Path::new("foo.rs"));
/// assert_eq!(lang, Language::Rust);
///
/// let lang = Language::from_extension(Path::new("bar.py"));
/// assert_eq!(lang, Language::Python);
/// ```
#[provable_contracts_macros::contract("pmat-core.yaml", equation = "path_exists")]
pub fn from_extension(path: &Path) -> Self {
match path.extension().and_then(|e| e.to_str()) {
Some("rs") => Language::Rust,
Some("py") => Language::Python,
Some("ts") => Language::TypeScript,
Some("tsx") => Language::TypeScript,
Some("js") => Language::JavaScript,
Some("jsx") => Language::JavaScript,
Some("go") => Language::Go,
Some("cpp") | Some("cc") | Some("cxx") | Some("hpp") | Some("hxx") | Some("h")
| Some("cu") | Some("cuh") => Language::Cpp,
_ => Language::Unsupported,
}
}
/// Get the human-readable name of the language
///
/// # Returns
/// The language name as a string
///
/// # Examples
/// ```
/// use pmat::services::mutation::language_detector::Language;
///
/// assert_eq!(Language::Rust.name(), "Rust");
/// assert_eq!(Language::Python.name(), "Python");
/// assert_eq!(Language::TypeScript.name(), "TypeScript");
/// ```
#[provable_contracts_macros::contract("pmat-core.yaml", equation = "check_compliance")]
pub fn name(&self) -> &'static str {
match self {
Language::Rust => "Rust",
Language::Python => "Python",
Language::TypeScript => "TypeScript",
Language::JavaScript => "JavaScript",
Language::Go => "Go",
Language::Cpp => "C++",
Language::Unsupported => "Unsupported",
}
}
/// Check if the language is currently supported for mutation testing
///
/// # Returns
/// `true` if mutation operators exist for this language
///
/// # Examples
/// ```
/// use pmat::services::mutation::language_detector::Language;
///
/// assert!(Language::Rust.is_supported());
/// assert!(!Language::Unsupported.is_supported());
/// ```
#[provable_contracts_macros::contract("pmat-core.yaml", equation = "check_compliance")]
pub fn is_supported(&self) -> bool {
!matches!(self, Language::Unsupported)
}
/// Get file extensions for this language
///
/// # Returns
/// A vector of file extensions (without the dot)
///
/// # Examples
/// ```
/// use pmat::services::mutation::language_detector::Language;
///
/// assert_eq!(Language::Rust.extensions(), vec!["rs"]);
/// assert_eq!(Language::Python.extensions(), vec!["py"]);
/// assert!(Language::TypeScript.extensions().contains(&"ts"));
/// ```
#[provable_contracts_macros::contract("pmat-core.yaml", equation = "check_compliance")]
pub fn extensions(&self) -> Vec<&'static str> {
match self {
Language::Rust => vec!["rs"],
Language::Python => vec!["py"],
Language::TypeScript => vec!["ts", "tsx"],
Language::JavaScript => vec!["js", "jsx"],
Language::Go => vec!["go"],
Language::Cpp => vec!["cpp", "cc", "cxx", "hpp", "hxx", "h"],
Language::Unsupported => vec![],
}
}
}
#[cfg_attr(coverage_nightly, coverage(off))]
#[cfg(test)]
mod tests {
use super::*;
use std::path::Path;
#[test]
fn test_rust_detection() {
assert_eq!(
Language::from_extension(Path::new("foo.rs")),
Language::Rust
);
assert_eq!(
Language::from_extension(Path::new("/path/to/main.rs")),
Language::Rust
);
}
#[test]
fn test_python_detection() {
assert_eq!(
Language::from_extension(Path::new("foo.py")),
Language::Python
);
assert_eq!(
Language::from_extension(Path::new("/path/to/script.py")),
Language::Python
);
}
#[test]
fn test_typescript_detection() {
assert_eq!(
Language::from_extension(Path::new("foo.ts")),
Language::TypeScript
);
assert_eq!(
Language::from_extension(Path::new("Component.tsx")),
Language::TypeScript
);
}
#[test]
fn test_javascript_detection() {
assert_eq!(
Language::from_extension(Path::new("foo.js")),
Language::JavaScript
);
assert_eq!(
Language::from_extension(Path::new("Component.jsx")),
Language::JavaScript
);
}
#[test]
fn test_go_detection() {
assert_eq!(Language::from_extension(Path::new("main.go")), Language::Go);
}
#[test]
fn test_cpp_detection() {
assert_eq!(
Language::from_extension(Path::new("main.cpp")),
Language::Cpp
);
assert_eq!(
Language::from_extension(Path::new("main.cc")),
Language::Cpp
);
assert_eq!(
Language::from_extension(Path::new("main.cxx")),
Language::Cpp
);
assert_eq!(
Language::from_extension(Path::new("header.hpp")),
Language::Cpp
);
assert_eq!(
Language::from_extension(Path::new("header.hxx")),
Language::Cpp
);
assert_eq!(
Language::from_extension(Path::new("header.h")),
Language::Cpp
);
}
#[test]
fn test_unsupported_detection() {
assert_eq!(
Language::from_extension(Path::new("foo.txt")),
Language::Unsupported
);
assert_eq!(
Language::from_extension(Path::new("foo.md")),
Language::Unsupported
);
assert_eq!(
Language::from_extension(Path::new("README")),
Language::Unsupported
);
}
#[test]
fn test_language_names() {
assert_eq!(Language::Rust.name(), "Rust");
assert_eq!(Language::Python.name(), "Python");
assert_eq!(Language::TypeScript.name(), "TypeScript");
assert_eq!(Language::JavaScript.name(), "JavaScript");
assert_eq!(Language::Go.name(), "Go");
assert_eq!(Language::Cpp.name(), "C++");
assert_eq!(Language::Unsupported.name(), "Unsupported");
}
#[test]
fn test_is_supported() {
assert!(Language::Rust.is_supported());
assert!(Language::Python.is_supported());
assert!(Language::TypeScript.is_supported());
assert!(Language::JavaScript.is_supported());
assert!(Language::Go.is_supported());
assert!(Language::Cpp.is_supported());
assert!(!Language::Unsupported.is_supported());
}
#[test]
fn test_extensions() {
assert_eq!(Language::Rust.extensions(), vec!["rs"]);
assert_eq!(Language::Python.extensions(), vec!["py"]);
assert_eq!(Language::TypeScript.extensions(), vec!["ts", "tsx"]);
assert_eq!(Language::JavaScript.extensions(), vec!["js", "jsx"]);
assert_eq!(Language::Go.extensions(), vec!["go"]);
assert_eq!(
Language::Cpp.extensions(),
vec!["cpp", "cc", "cxx", "hpp", "hxx", "h"]
);
assert_eq!(Language::Unsupported.extensions(), Vec::<&str>::new());
}
#[test]
fn test_case_sensitivity() {
// Extensions should be case-sensitive (lowercase expected)
assert_eq!(
Language::from_extension(Path::new("foo.RS")),
Language::Unsupported
);
assert_eq!(
Language::from_extension(Path::new("foo.PY")),
Language::Unsupported
);
}
}