c_lang.rs•4.7 kB
use tree_sitter::Node;
use std::collections::HashSet;
use super::{Capture, ParseStrategy, get_node_text, get_lines_text};
/// C 解析策略
pub struct CStrategy;
enum CaptureType {
Comment,
Include,
Function,
Struct,
Enum,
Typedef,
}
impl CStrategy {
fn get_capture_type(&self, name: &str) -> Vec<CaptureType> {
let mut types = Vec::new();
if name.contains("comment") {
types.push(CaptureType::Comment);
}
if name.contains("definition.include") {
types.push(CaptureType::Include);
}
if name.contains("definition.function") {
types.push(CaptureType::Function);
}
if name.contains("definition.struct") {
types.push(CaptureType::Struct);
}
if name.contains("definition.enum") {
types.push(CaptureType::Enum);
}
if name.contains("definition.typedef") {
types.push(CaptureType::Typedef);
}
types
}
fn parse_function(
&self,
node: Node,
source_code: &str,
processed_chunks: &mut HashSet<String>,
) -> Option<String> {
// 获取函数签名（不包括函数体）
// node 是函数名，需要获取 function_definition 父节点
let mut current = node;
while let Some(parent) = current.parent() {
if parent.kind() == "function_definition" {
let start_row = parent.start_position().row;
let end_row = parent.end_position().row;
// 查找函数签名结束位置（{ 之前）
let signature_end = self.find_signature_end(source_code, start_row, end_row);
let signature = get_lines_text(source_code, start_row, signature_end);
let cleaned = signature.trim().to_string();
if processed_chunks.contains(&cleaned) {
return None;
}
processed_chunks.insert(cleaned.clone());
return Some(cleaned);
}
current = parent;
}
None
}
fn find_signature_end(&self, source_code: &str, start: usize, end: usize) -> usize {
let lines: Vec<&str> = source_code.lines().collect();
for i in start..=end.min(lines.len() - 1) {
let line = lines[i].trim();
if line.ends_with('{') || line.ends_with(';') {
return i;
}
}
start
}
fn parse_struct_or_enum(
&self,
node: Node,
source_code: &str,
processed_chunks: &mut HashSet<String>,
) -> Option<String> {
// node 是结构体/枚举名称，需要获取完整的定义
if let Some(parent) = node.parent() {
let start_row = parent.start_position().row;
let end_row = parent.end_position().row;
let full_text = get_lines_text(source_code, start_row, end_row);
let cleaned = full_text.trim().to_string();
if processed_chunks.contains(&cleaned) {
return None;
}
processed_chunks.insert(cleaned.clone());
return Some(cleaned);
}
None
}
}
impl ParseStrategy for CStrategy {
fn parse_capture(
&self,
capture: Capture,
source_code: &str,
processed_chunks: &mut HashSet<String>,
) -> Option<String> {
let node = capture.node;
let name = capture.name;
let capture_types = self.get_capture_type(name);
// 函数
if capture_types.iter().any(|t| matches!(t, CaptureType::Function)) {
return self.parse_function(node, source_code, processed_chunks);
}
// 结构体和枚举
if capture_types.iter().any(|t| matches!(t, CaptureType::Struct | CaptureType::Enum)) {
return self.parse_struct_or_enum(node, source_code, processed_chunks);
}
// 类型定义、包含、注释 - 直接提取
if capture_types.iter().any(|t| {
matches!(t, CaptureType::Typedef | CaptureType::Include | CaptureType::Comment)
}) {
let text = get_node_text(node, source_code).trim().to_string();
if processed_chunks.contains(&text) {
return None;
}
processed_chunks.insert(text.clone());
return Some(text);
}
None
}
}