#![cfg_attr(coverage_nightly, coverage(off))]
use anyhow::Result;
use async_trait::async_trait;
use std::path::Path;
#[cfg(feature = "c-ast")]
use tree_sitter::Tree;
use crate::ast::core::{AstDag, AstKind, Language, NodeFlags, UnifiedAstNode};
use crate::ast::languages::LanguageStrategy;
#[cfg(any(feature = "c-ast", feature = "cpp-ast"))]
use super::c_cpp_visitor::CTreeSitterVisitor;
pub struct CStrategy;
impl Default for CStrategy {
fn default() -> Self {
Self::new()
}
}
impl CStrategy {
#[must_use]
pub fn new() -> Self {
Self
}
#[cfg(feature = "c-ast")]
fn parse_with_tree_sitter(&self, content: &str) -> Result<Tree> {
let mut parser = tree_sitter::Parser::new();
parser
.set_language(&tree_sitter_c::LANGUAGE.into())
.map_err(|e| anyhow::anyhow!("Failed to set C language: {e}"))?;
parser
.parse(content, None)
.ok_or_else(|| anyhow::anyhow!("Failed to parse C code"))
}
#[cfg(not(feature = "c-ast"))]
#[allow(dead_code)]
fn parse_with_tree_sitter(&self, _content: &str) -> Result<()> {
Err(anyhow::anyhow!(
"C AST parsing not available - compile with 'c-ast' feature"
))
}
#[cfg(feature = "c-ast")]
fn convert_to_dag(&self, tree: &Tree, content: &str) -> AstDag {
let mut dag = AstDag::new();
let root = tree.root_node();
let mut visitor = CTreeSitterVisitor::new(&mut dag, content, Language::C);
visitor.visit_node(&root, None);
dag
}
}
#[async_trait]
impl LanguageStrategy for CStrategy {
fn language(&self) -> Language {
Language::C
}
fn can_parse(&self, path: &Path) -> bool {
path.extension()
.and_then(|ext| ext.to_str())
.is_some_and(|ext| matches!(ext, "c" | "h"))
}
#[cfg(feature = "c-ast")]
async fn parse_file(&self, _path: &Path, content: &str) -> Result<AstDag> {
let tree = self.parse_with_tree_sitter(content)?;
Ok(self.convert_to_dag(&tree, content))
}
#[cfg(not(feature = "c-ast"))]
async fn parse_file(&self, _path: &Path, _content: &str) -> Result<AstDag> {
Err(anyhow::anyhow!(
"C AST parsing not available - compile with 'c-ast' feature"
))
}
fn extract_imports(&self, ast: &AstDag) -> Vec<String> {
let mut imports = Vec::new();
for i in 0..ast.nodes.len() {
if let Some(node) = ast.nodes.get(i as u32) {
if matches!(node.kind, AstKind::Import(_)) {
imports.push(format!("import_{i}"));
}
}
}
imports
}
fn extract_functions(&self, ast: &AstDag) -> Vec<UnifiedAstNode> {
let mut functions = Vec::new();
for i in 0..ast.nodes.len() {
if let Some(node) = ast.nodes.get(i as u32) {
if matches!(node.kind, AstKind::Function(_)) {
functions.push(node.clone());
}
}
}
functions
}
fn extract_types(&self, ast: &AstDag) -> Vec<UnifiedAstNode> {
let mut types = Vec::new();
for i in 0..ast.nodes.len() {
if let Some(node) = ast.nodes.get(i as u32) {
if matches!(node.kind, AstKind::Class(_)) {
types.push(node.clone());
}
}
}
types
}
fn calculate_complexity(&self, ast: &AstDag) -> (u32, u32) {
let mut cyclomatic = 1;
let mut cognitive = 0;
for i in 0..ast.nodes.len() {
if let Some(node) = ast.nodes.get(i as u32) {
if node.flags.has(NodeFlags::CONTROL_FLOW) {
cyclomatic += 1;
cognitive += 1;
}
}
}
(cyclomatic, cognitive)
}
}
pub struct CppStrategy;
impl Default for CppStrategy {
fn default() -> Self {
Self::new()
}
}
impl CppStrategy {
#[must_use]
pub fn new() -> Self {
Self
}
#[cfg(feature = "cpp-ast")]
fn parse_with_tree_sitter(&self, content: &str) -> Result<Tree> {
let mut parser = tree_sitter::Parser::new();
parser
.set_language(&tree_sitter_cpp::LANGUAGE.into())
.map_err(|e| anyhow::anyhow!("Failed to set C++ language: {e}"))?;
parser
.parse(content, None)
.ok_or_else(|| anyhow::anyhow!("Failed to parse C++ code"))
}
#[cfg(not(feature = "cpp-ast"))]
#[allow(dead_code)]
fn parse_with_tree_sitter(&self, _content: &str) -> Result<()> {
Err(anyhow::anyhow!(
"C++ AST parsing not available - compile with 'cpp-ast' feature"
))
}
#[cfg(feature = "cpp-ast")]
fn convert_to_dag(&self, tree: &Tree, content: &str) -> AstDag {
let mut dag = AstDag::new();
let root = tree.root_node();
let mut visitor = CTreeSitterVisitor::new(&mut dag, content, Language::Cpp);
visitor.visit_node(&root, None);
dag
}
}
#[async_trait]
impl LanguageStrategy for CppStrategy {
fn language(&self) -> Language {
Language::Cpp
}
fn can_parse(&self, path: &Path) -> bool {
path.extension()
.and_then(|ext| ext.to_str())
.is_some_and(|ext| {
matches!(
ext,
"cpp" | "cc" | "cxx" | "hpp" | "hh" | "hxx" | "cu" | "cuh"
)
})
}
#[cfg(feature = "cpp-ast")]
async fn parse_file(&self, _path: &Path, content: &str) -> Result<AstDag> {
let tree = self.parse_with_tree_sitter(content)?;
Ok(self.convert_to_dag(&tree, content))
}
#[cfg(not(feature = "cpp-ast"))]
async fn parse_file(&self, _path: &Path, _content: &str) -> Result<AstDag> {
Err(anyhow::anyhow!(
"C++ AST parsing not available - compile with 'cpp-ast' feature"
))
}
fn extract_imports(&self, ast: &AstDag) -> Vec<String> {
CStrategy::new().extract_imports(ast)
}
fn extract_functions(&self, ast: &AstDag) -> Vec<UnifiedAstNode> {
CStrategy::new().extract_functions(ast)
}
fn extract_types(&self, ast: &AstDag) -> Vec<UnifiedAstNode> {
CStrategy::new().extract_types(ast)
}
fn calculate_complexity(&self, ast: &AstDag) -> (u32, u32) {
CStrategy::new().calculate_complexity(ast)
}
}