use std::path::{Path, PathBuf};
use once_cell::sync::Lazy;
use regex::Regex;
use rustc_hash::{FxHashMap, FxHashSet};
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_graphql_file(path: &Path) -> bool {
let ext = base::file_ext(path);
ext == ".graphql" || ext == ".gql"
}
static TYPE_DEF_RE: Lazy<Regex> = Lazy::new(|| {
Regex::new(r"(?m)^\s*(?:type|input|interface|enum|union|scalar)\s+(\w+)").unwrap()
});
static EXTEND_RE: Lazy<Regex> = Lazy::new(|| {
Regex::new(r"(?m)^\s*extend\s+(?:type|input|interface|enum|union)\s+(\w+)").unwrap()
});
static FIELD_TYPE_RE: Lazy<Regex> = Lazy::new(|| Regex::new(r":\s*\[?([A-Z]\w+)").unwrap());
static IMPLEMENTS_RE: Lazy<Regex> = Lazy::new(|| Regex::new(r"implements\s+([\w\s&]+)").unwrap());
static UNION_MEMBERS_RE: Lazy<Regex> =
Lazy::new(|| Regex::new(r"union\s+\w+\s*=\s*([\w\s|]+)").unwrap());
static GQL_BUILTINS: Lazy<FxHashSet<&str>> = Lazy::new(|| {
["String", "Int", "Float", "Boolean", "ID"]
.iter()
.copied()
.collect()
});
fn extract_defs(content: &str) -> FxHashSet<String> {
TYPE_DEF_RE
.captures_iter(content)
.map(|c| c[1].to_string())
.collect()
}
fn extract_type_refs(content: &str) -> FxHashSet<String> {
let mut refs: FxHashSet<String> = FIELD_TYPE_RE
.captures_iter(content)
.map(|c| c[1].to_string())
.filter(|n| !GQL_BUILTINS.contains(n.as_str()))
.collect();
for cap in IMPLEMENTS_RE.captures_iter(content) {
for part in cap[1].split('&') {
let name = part.trim();
if !name.is_empty() {
refs.insert(name.to_string());
}
}
}
for cap in UNION_MEMBERS_RE.captures_iter(content) {
for part in cap[1].split('|') {
let name = part.trim();
if !name.is_empty() {
refs.insert(name.to_string());
}
}
}
refs
}
fn extract_extends(content: &str) -> FxHashSet<String> {
EXTEND_RE
.captures_iter(content)
.map(|c| c[1].to_string())
.collect()
}
pub struct GraphqlEdgeBuilder;
impl EdgeBuilder for GraphqlEdgeBuilder {
fn build(&self, fragments: &[Fragment], _repo_root: Option<&Path>) -> EdgeDict {
let frags: Vec<&Fragment> = fragments
.iter()
.filter(|f| is_graphql_file(Path::new(f.path())))
.collect();
if frags.is_empty() {
return FxHashMap::default();
}
let type_w = EDGE_WEIGHTS["graphql_type_ref"].forward;
let extend_w = EDGE_WEIGHTS["graphql_extend"].forward;
let reverse_factor = EDGE_WEIGHTS["graphql_type_ref"].reverse_factor;
let mut name_to_defs: 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());
}
}
let mut edges: EdgeDict = FxHashMap::default();
for f in &frags {
let self_defs = extract_defs(&f.content);
for ext_name in extract_extends(&f.content) {
if let Some(targets) = name_to_defs.get(&ext_name.to_lowercase()) {
add_edges_from_ids(&mut edges, &f.id, targets, extend_w, reverse_factor);
}
}
for tref in extract_type_refs(&f.content) {
if self_defs.contains(&tref) {
continue;
}
if let Some(targets) = name_to_defs.get(&tref.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 gql_changed: Vec<&PathBuf> = changed.iter().filter(|f| is_graphql_file(f)).collect();
if gql_changed.is_empty() {
return vec![];
}
let mut refs = FxHashSet::default();
for f in &gql_changed {
if let Some(content) = base::read_file_cached(f, file_cache) {
refs.extend(extract_type_refs(&content));
refs.extend(extract_extends(&content));
}
}
discover_files_by_refs(&refs, changed, candidates, repo_root)
}
}