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use super::*;
impl<'a> BodyAnalyzer<'a> {
/// body analysis: walk all function/method bodies in one file, return issues, and
/// write inferred return types back to the codebase.
pub(crate) fn analyze_bodies(
&self,
program: &php_ast::owned::Program,
file: Arc<str>,
source: &str,
source_map: &php_rs_parser::source_map::SourceMap,
) -> (Vec<Issue>, Vec<ResolvedSymbol>) {
let mut all_issues = Vec::new();
let mut all_symbols = Vec::new();
if self.mode == AnalysisMode::Full {
check_duplicate_declarations(
&program.stmts,
&file,
source,
source_map,
&mut all_issues,
);
}
self.analyze_top_level_stmts(
&program.stmts,
&file,
source,
source_map,
&mut all_issues,
&mut all_symbols,
);
// Analyze top-level executable statements in global scope. The
// inference-only sweep only primes function/method return types; top-
// level diagnostics and references are produced by the main sweep.
self.analyze_global_exec(
program,
&file,
source,
source_map,
&mut all_issues,
&mut all_symbols,
);
(all_issues, all_symbols)
}
/// Analyze top-level executable statements in global scope (Full mode
/// only). Extracted from [`Self::analyze_bodies`] so the per-scope
/// tracked query can run it as its own scope.
pub(crate) fn analyze_global_exec(
&self,
program: &php_ast::owned::Program,
file: &Arc<str>,
source: &str,
source_map: &php_rs_parser::source_map::SourceMap,
all_issues: &mut Vec<Issue>,
all_symbols: &mut Vec<ResolvedSymbol>,
) {
use php_ast::owned::StmtKind;
if self.mode != AnalysisMode::Full {
return;
}
use crate::flow_state::FlowState;
use crate::stmt::StatementsAnalyzer;
use mir_issues::IssueBuffer;
let mut ctx = FlowState::new();
let mut buf = IssueBuffer::new();
let mut sa = StatementsAnalyzer::new(
self.db,
file.clone(),
source,
source_map,
&mut buf,
all_symbols,
self.php_version,
self.mode,
);
for stmt in program.stmts.iter() {
match &stmt.kind {
StmtKind::Function(_)
| StmtKind::Class(_)
| StmtKind::Enum(_)
| StmtKind::Interface(_)
| StmtKind::Trait(_)
| StmtKind::Namespace(_)
| StmtKind::Use(_) => {}
// Process Declare so that `declare(strict_types=1)` updates
// ctx.strict_types before later executable stmts are analyzed.
_ => {
sa.analyze_stmt(stmt, &mut ctx);
}
}
}
drop(sa);
crate::diagnostics::emit_unused_variables(&ctx, file, all_issues);
all_issues.extend(buf.into_all_issues());
}
/// Like `analyze_bodies` but also populates `type_envs` with per-scope type environments.
pub(crate) fn analyze_bodies_typed(
&self,
program: &php_ast::owned::Program,
file: Arc<str>,
source: &str,
source_map: &php_rs_parser::source_map::SourceMap,
type_envs: &mut FxHashMap<crate::type_env::ScopeId, crate::type_env::TypeEnv>,
all_symbols: &mut Vec<ResolvedSymbol>,
) -> Vec<Issue> {
use php_ast::owned::StmtKind;
let mut all_issues = Vec::new();
self.analyze_top_level_stmts_typed(
&program.stmts,
&file,
source,
source_map,
&mut all_issues,
type_envs,
all_symbols,
);
// Analyze top-level executable statements in global scope.
{
use crate::flow_state::FlowState;
use crate::stmt::StatementsAnalyzer;
use mir_issues::IssueBuffer;
let mut ctx = FlowState::new();
let mut buf = IssueBuffer::new();
let mut sa = StatementsAnalyzer::new(
self.db,
file.clone(),
source,
source_map,
&mut buf,
all_symbols,
self.php_version,
self.mode,
);
for stmt in program.stmts.iter() {
match &stmt.kind {
StmtKind::Function(_)
| StmtKind::Class(_)
| StmtKind::Enum(_)
| StmtKind::Interface(_)
| StmtKind::Trait(_)
| StmtKind::Namespace(_)
| StmtKind::Use(_) => {}
_ => {
sa.analyze_stmt(stmt, &mut ctx);
}
}
}
drop(sa);
crate::diagnostics::emit_unused_variables(&ctx, &file, &mut all_issues);
all_issues.extend(buf.into_all_issues());
}
all_issues
}
fn analyze_top_level_stmts(
&self,
stmts: &[php_ast::owned::Stmt],
file: &Arc<str>,
source: &str,
source_map: &php_rs_parser::source_map::SourceMap,
all_issues: &mut Vec<Issue>,
all_symbols: &mut Vec<ResolvedSymbol>,
) {
use php_ast::owned::StmtKind;
let mut guards: rustc_hash::FxHashSet<std::sync::Arc<str>> =
rustc_hash::FxHashSet::default();
for stmt in stmts.iter() {
match &stmt.kind {
StmtKind::Function(decl) => {
self.analyze_fn_decl(decl, file, source, source_map, all_issues, all_symbols);
}
StmtKind::Class(decl) => {
self.analyze_class_decl(
decl,
file,
source,
source_map,
all_issues,
all_symbols,
&guards,
);
}
StmtKind::Enum(decl) => {
self.analyze_enum_decl(decl, file, source, source_map, all_issues, all_symbols);
}
StmtKind::Interface(decl) => {
self.analyze_interface_decl(
decl, file, source, source_map, all_issues, &guards,
);
}
StmtKind::Trait(decl) => {
self.analyze_trait_decl(
decl,
file,
source,
source_map,
all_issues,
all_symbols,
);
}
StmtKind::Namespace(ns) => {
if let php_ast::owned::NamespaceBody::Braced(inner) = &ns.body {
self.analyze_top_level_stmts(
&inner.stmts,
file,
source,
source_map,
all_issues,
all_symbols,
);
}
}
StmtKind::Use(use_decl) => {
check_use_decl_casing(use_decl, self.db, file, source, source_map, all_issues);
}
_ => {}
}
accumulate_class_exists_guard(stmt, self.db, file.as_ref(), &mut guards);
}
}
#[allow(clippy::too_many_arguments)]
fn analyze_top_level_stmts_typed(
&self,
stmts: &[php_ast::owned::Stmt],
file: &Arc<str>,
source: &str,
source_map: &php_rs_parser::source_map::SourceMap,
all_issues: &mut Vec<Issue>,
type_envs: &mut rustc_hash::FxHashMap<crate::type_env::ScopeId, crate::type_env::TypeEnv>,
all_symbols: &mut Vec<ResolvedSymbol>,
) {
use php_ast::owned::StmtKind;
let mut guards: rustc_hash::FxHashSet<std::sync::Arc<str>> =
rustc_hash::FxHashSet::default();
for stmt in stmts.iter() {
match &stmt.kind {
StmtKind::Function(decl) => {
self.analyze_fn_decl_typed(
decl,
file,
source,
source_map,
all_issues,
type_envs,
all_symbols,
);
}
StmtKind::Class(decl) => {
self.analyze_class_decl_typed(
decl,
file,
source,
source_map,
all_issues,
type_envs,
all_symbols,
&guards,
);
}
StmtKind::Enum(decl) => {
self.analyze_enum_decl_typed(
decl,
file,
source,
source_map,
all_issues,
type_envs,
all_symbols,
);
}
StmtKind::Interface(decl) => {
self.analyze_interface_decl(
decl, file, source, source_map, all_issues, &guards,
);
}
StmtKind::Trait(decl) => {
self.analyze_trait_decl_typed(
decl,
file,
source,
source_map,
all_issues,
type_envs,
all_symbols,
);
}
StmtKind::Namespace(ns) => {
if let php_ast::owned::NamespaceBody::Braced(inner) = &ns.body {
self.analyze_top_level_stmts_typed(
&inner.stmts,
file,
source,
source_map,
all_issues,
type_envs,
all_symbols,
);
}
}
StmtKind::Use(use_decl) => {
check_use_decl_casing(use_decl, self.db, file, source, source_map, all_issues);
}
_ => {}
}
accumulate_class_exists_guard(stmt, self.db, file.as_ref(), &mut guards);
}
}
}
/// If `stmt` is an `if (!class_exists('X')) { throw/return; }` guard, insert
/// the proven-to-exist FQCN into `guards` so the immediately following class
/// declaration can skip the UndefinedClass check for that name.
fn accumulate_class_exists_guard(
stmt: &php_ast::owned::Stmt,
db: &dyn crate::db::MirDatabase,
file: &str,
guards: &mut rustc_hash::FxHashSet<std::sync::Arc<str>>,
) {
use php_ast::ast::UnaryPrefixOp;
use php_ast::owned::{ExprKind, StmtKind};
let StmtKind::If(if_stmt) = &stmt.kind else {
return;
};
// No else/elseif — we only handle the simple guard pattern.
if !if_stmt.elseif_branches.is_empty() || if_stmt.else_branch.is_some() {
return;
}
// Condition: `!class_exists(...)` / `!interface_exists(...)` / `!trait_exists(...)`
let ExprKind::UnaryPrefix(u) = &if_stmt.condition.kind else {
return;
};
if u.op != UnaryPrefixOp::BooleanNot {
return;
}
let ExprKind::FunctionCall(call) = &u.operand.kind else {
return;
};
let fn_name = match &call.name.kind {
ExprKind::Identifier(name) => name.as_ref(),
_ => return,
};
if !matches!(
fn_name.trim_start_matches('\\'),
"class_exists" | "interface_exists" | "trait_exists"
) {
return;
}
// Then-body must diverge (throw or return).
if !then_branch_diverges(&if_stmt.then_branch) {
return;
}
if let Some(arg) = call.args.first() {
if let Some(fqcn) = crate::narrowing::extract_class_fqcn_from_expr(&arg.value, db, file) {
guards.insert(fqcn);
}
}
}
fn then_branch_diverges(stmt: &php_ast::owned::Stmt) -> bool {
use php_ast::owned::StmtKind;
match &stmt.kind {
StmtKind::Throw(_) => true,
StmtKind::Return(_) => true,
StmtKind::Block(block) => block
.stmts
.iter()
.any(|s| matches!(s.kind, StmtKind::Throw(_) | StmtKind::Return(_))),
_ => false,
}
}