pub trait LanguageParser {
    fn parse(&self, content: &str) -> Result<AST, ParseError>;
    fn language(&self) -> Language;
    fn file_extensions(&self) -> &[&str];
}

pub trait ASTNode {
    fn node_type(&self) -> NodeType;
    fn children(&self) -> &[Box<dyn ASTNode>];
    fn metadata(&self) -> &HashMap<String, Value>;
}

pub trait SemanticAnalyzer {
    fn analyze(&self, ast: &AST) -> Result<SemanticInfo, AnalysisError>;
}

pub trait SymbolResolver {
    fn resolve_symbols(&self, ast: &AST) -> Result<SymbolTable, ResolverError>;
}

// crates/parser/src/languages/your_language.rs
use tree_sitter_your_language;

pub struct YourLanguageParser;

impl LanguageParser for YourLanguageParser {
    fn parse(&self, content: &str) -> Result<AST, ParseError> {
        let mut parser = tree_sitter::Parser::new();
        parser.set_language(tree_sitter_your_language::language())?;
        
        let tree = parser.parse(content, None)
            .ok_or(ParseError::ParseFailed)?;
        
        ASTBuilder::new().build_ast(tree.root_node(), content)
    }
    
    fn language(&self) -> Language {
        Language::YourLanguage
    }
    
    fn file_extensions(&self) -> &[&str] {
        &[".your_ext"]
    }
}

// crates/parser/src/language_detector.rs
impl LanguageDetector {
    pub fn new() -> Self {
        let mut parsers = HashMap::new();
        // ... existing parsers
        parsers.insert(Language::YourLanguage, Box::new(YourLanguageParser));
        
        Self { parsers }
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    
    #[test]
    fn test_your_language_parsing() {
        let parser = YourLanguageParser;
        let code = "your sample code here";
        let ast = parser.parse(code).unwrap();
        
        assert_eq!(ast.root().node_type(), NodeType::Program);
        // Add more assertions
    }
}

// crates/semantic-analysis/src/analyzers/your_analyzer.rs
pub struct YourAnalyzer;

impl SemanticAnalyzer for YourAnalyzer {
    fn analyze(&self, ast: &AST) -> Result<SemanticInfo, AnalysisError> {
        // Your analysis logic
        Ok(SemanticInfo::new())
    }
}

// crates/semantic-analysis/src/lib.rs
impl SemanticEngine {
    pub fn analyze(&self, ast: &AST) -> Result<SemanticInfo, AnalysisError> {
        let mut info = SemanticInfo::new();
        
        // Existing analyzers
        info.merge(self.symbol_resolver.analyze(ast)?);
        info.merge(self.type_extractor.analyze(ast)?);
        
        // Your analyzer
        info.merge(YourAnalyzer.analyze(ast)?);
        
        Ok(info)
    }
}

// crates/cli/src/output/your_format.rs
pub struct YourFormatFormatter;

impl OutputFormatter for YourFormatFormatter {
    fn format(&self, result: &ComparisonResult) -> Result<String, FormatError> {
        // Your formatting logic
        Ok(formatted_output)
    }
    
    fn file_extension(&self) -> &str {
        ".your_ext"
    }
}

// crates/cli/src/output/mod.rs
pub fn get_formatter(format: &str) -> Result<Box<dyn OutputFormatter>, FormatError> {
    match format {
        "text" => Ok(Box::new(TextFormatter)),
        "json" => Ok(Box::new(JsonFormatter)),
        "html" => Ok(Box::new(HtmlFormatter)),
        "xml" => Ok(Box::new(XmlFormatter)),
        "your_format" => Ok(Box::new(YourFormatFormatter)),
        _ => Err(FormatError::UnsupportedFormat(format.to_string())),
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    
    #[test]
    fn test_function_name() {
        // Arrange
        let input = create_test_input();
        
        // Act
        let result = function_under_test(input);
        
        // Assert
        assert_eq!(result, expected_output);
    }
}

// crates/parser/tests/integration_test.rs
use smart_diff_parser::*;

#[test]
fn test_java_parsing_integration() {
    let detector = LanguageDetector::new();
    let engine = ParserEngine::new();
    
    let java_code = include_str!("fixtures/Calculator.java");
    let language = detector.detect_language("Calculator.java", java_code).unwrap();
    let ast = engine.parse(java_code, &language).unwrap();
    
    assert_eq!(language, Language::Java);
    assert!(ast.functions().len() > 0);
}

// tests/e2e/cli_tests.rs
use std::process::Command;

#[test]
fn test_cli_file_comparison() {
    let output = Command::new("./target/debug/smart-diff-cli")
        .args(&["compare", "tests/fixtures/old.java", "tests/fixtures/new.java"])
        .output()
        .expect("Failed to execute command");
    
    assert!(output.status.success());
    let stdout = String::from_utf8(output.stdout).unwrap();
    assert!(stdout.contains("Similarity:"));
}

// tests/performance/benchmarks.rs
use criterion::{black_box, criterion_group, criterion_main, Criterion};

fn benchmark_parsing(c: &mut Criterion) {
    let large_file = include_str!("fixtures/large_file.java");
    let parser = ParserEngine::new();
    
    c.bench_function("parse large java file", |b| {
        b.iter(|| parser.parse(black_box(large_file), &Language::Java))
    });
}

criterion_group!(benches, benchmark_parsing);
criterion_main!(benches);