Function scan_ast

src/pyspector/_rust_core/src/analysis/ast_analysis.rs:6–21

Main entry point for AST scanning

(ast: &AstNode, file_path: &str, content: &str, ruleset: &RuleSet)

// Main entry point for AST scanning
pub fn scan_ast(ast: &AstNode, file_path: &str, content: &str, ruleset: &RuleSet) -> Vec<Issue> {
    // Pre-filter applicable rules ONCE per file — not per AST node.
    // This is critical for performance: file_content_exclude runs a regex against
    // the full file content. Calling it inside walk_ast meant it ran O(nodes × rules)
    // times — 5M+ times for large files. Pre-filtering reduces this to O(rules) = ~100.
    let ast_rules: Vec<&Rule> = ruleset.rules.iter()
        .filter(|r| r.ast_match.is_some())
        .filter(|r| !r.is_excluded(file_path, content, &ruleset.defaults))
        .collect();

    if ast_rules.is_empty() { return Vec::new(); }

    let mut issues = Vec::new();
    walk_ast(ast, file_path, content, &ast_rules, &mut issues);
    issues
}

// Recursively walks the AST, checking each node against pre-filtered rules.
// Rules are already filtered for this file — no exclusion checks needed here.