use std::path::{Path, PathBuf};
use once_cell::sync::Lazy;
use regex::Regex;
use rustc_hash::{FxHashMap, FxHashSet};
use crate::config::extensions::PHP_EXTENSIONS;
use crate::config::weights::EDGE_WEIGHTS;
use crate::types::Fragment;
use super::super::EdgeDict;
use super::super::base::{self, EdgeBuilder, add_edge, add_edges_from_ids, discover_files_by_refs};
fn is_php_file(path: &Path) -> bool {
let ext = base::file_ext(path);
PHP_EXTENSIONS.contains(ext.as_str())
}
static USE_RE: Lazy<Regex> = Lazy::new(|| Regex::new(r"(?m)^\s*use\s+([\w\\]+)").unwrap());
static NAMESPACE_RE: Lazy<Regex> =
Lazy::new(|| Regex::new(r"(?m)^\s*namespace\s+([\w\\]+)").unwrap());
static REQUIRE_RE: Lazy<Regex> = Lazy::new(|| {
Regex::new(r#"(?m)^\s*(?:require_once|require|include_once|include)\s+['"]([^'"]+)['"]"#)
.unwrap()
});
static DEF_RE: Lazy<Regex> = Lazy::new(|| {
Regex::new(r"(?m)^\s*(?:abstract\s+)?(?:class|interface|trait|enum)\s+([A-Z]\w*)").unwrap()
});
static FUNC_DEF_RE: Lazy<Regex> = Lazy::new(|| {
Regex::new(r"(?m)^\s*(?:public|protected|private|static)?\s*function\s+([a-zA-Z_]\w*)").unwrap()
});
static EXTENDS_RE: Lazy<Regex> =
Lazy::new(|| Regex::new(r"(?:extends|implements)\s+([\w\\,\s]+)").unwrap());
static TYPE_REF_RE: Lazy<Regex> = Lazy::new(|| Regex::new(r"\b([A-Z]\w*)\b").unwrap());
fn extract_uses(content: &str) -> FxHashSet<String> {
USE_RE
.captures_iter(content)
.map(|c| {
let full = &c[1];
full.split('\\').last().unwrap_or(full).to_string()
})
.collect()
}
fn extract_requires(content: &str) -> FxHashSet<String> {
REQUIRE_RE
.captures_iter(content)
.map(|c| c[1].to_string())
.collect()
}
fn extract_namespace(content: &str) -> Option<String> {
NAMESPACE_RE.captures(content).map(|c| c[1].to_string())
}
fn extract_defs(content: &str) -> FxHashSet<String> {
let mut defs: FxHashSet<String> = DEF_RE
.captures_iter(content)
.map(|c| c[1].to_string())
.collect();
defs.extend(FUNC_DEF_RE.captures_iter(content).map(|c| c[1].to_string()));
defs
}
fn extract_inheritance(content: &str) -> FxHashSet<String> {
let mut refs = FxHashSet::default();
for cap in EXTENDS_RE.captures_iter(content) {
for part in cap[1].split(',') {
let name = part.trim().split('\\').last().unwrap_or("").trim();
if !name.is_empty() {
refs.insert(name.to_string());
}
}
}
refs
}
pub struct PhpEdgeBuilder;
impl EdgeBuilder for PhpEdgeBuilder {
fn build(&self, fragments: &[Fragment], repo_root: Option<&Path>) -> EdgeDict {
let frags: Vec<&Fragment> = fragments
.iter()
.filter(|f| is_php_file(Path::new(f.path())))
.collect();
if frags.is_empty() {
return FxHashMap::default();
}
let use_w = EDGE_WEIGHTS["php_use"].forward;
let require_w = EDGE_WEIGHTS["php_require"].forward;
let inherit_w = EDGE_WEIGHTS["php_inheritance"].forward;
let type_w = EDGE_WEIGHTS["php_type"].forward;
let reverse_factor = EDGE_WEIGHTS["php_use"].reverse_factor;
let idx = base::FragmentIndex::new(fragments, repo_root);
let mut name_to_defs: FxHashMap<String, Vec<_>> = FxHashMap::default();
let mut ns_to_frags: FxHashMap<String, Vec<_>> = FxHashMap::default();
for f in &frags {
for name in extract_defs(&f.content) {
name_to_defs
.entry(name.to_lowercase())
.or_default()
.push(f.id.clone());
}
if let Some(ns) = extract_namespace(&f.content) {
ns_to_frags.entry(ns).or_default().push(f.id.clone());
}
}
let mut edges: EdgeDict = FxHashMap::default();
for f in &frags {
let self_defs = extract_defs(&f.content);
for req in extract_requires(&f.content) {
base::link_by_name(&f.id, &req, &idx, &mut edges, require_w, reverse_factor);
}
for use_name in extract_uses(&f.content) {
if let Some(targets) = name_to_defs.get(&use_name.to_lowercase()) {
add_edges_from_ids(&mut edges, &f.id, targets, use_w, reverse_factor);
}
}
for parent in extract_inheritance(&f.content) {
if let Some(targets) = name_to_defs.get(&parent.to_lowercase()) {
add_edges_from_ids(&mut edges, &f.id, targets, inherit_w, reverse_factor);
}
}
for tr in TYPE_REF_RE.captures_iter(&f.content) {
let name = &tr[1];
if self_defs.contains(name) {
continue;
}
if let Some(targets) = name_to_defs.get(&name.to_lowercase()) {
for t in targets {
if t != &f.id {
add_edge(&mut edges, &f.id, t, type_w, reverse_factor);
}
}
}
}
}
edges
}
fn discover_related_files(
&self,
changed: &[PathBuf],
candidates: &[PathBuf],
repo_root: Option<&Path>,
file_cache: Option<&FxHashMap<PathBuf, String>>,
) -> Vec<PathBuf> {
let php_changed: Vec<&PathBuf> = changed.iter().filter(|f| is_php_file(f)).collect();
if php_changed.is_empty() {
return vec![];
}
let mut refs = FxHashSet::default();
for f in &php_changed {
if let Some(content) = base::read_file_cached(f, file_cache) {
refs.extend(extract_requires(&content));
refs.extend(extract_uses(&content));
}
}
discover_files_by_refs(&refs, changed, candidates, repo_root)
}
}