mirror of
https://github.com/rust-lang/rust-analyzer
synced 2024-12-26 13:03:31 +00:00
move expr lowering to lower
This commit is contained in:
Aleksey Kladov
parent
7faec1c300
commit
db69d134fb
3 changed files with 667 additions and 653 deletions
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@ -169,13 +169,13 @@ pub trait HirDatabase: DefDatabase + AstDatabase {
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#[salsa::invoke(crate::ty::generic_defaults_query)]
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fn generic_defaults(&self, def: GenericDef) -> Substs;
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#[salsa::invoke(crate::expr::body_with_source_map_query)]
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#[salsa::invoke(crate::expr::lower::body_with_source_map_query)]
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fn body_with_source_map(
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&self,
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def: DefWithBody,
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) -> (Arc<crate::expr::Body>, Arc<crate::expr::BodySourceMap>);
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#[salsa::invoke(crate::expr::body_hir_query)]
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#[salsa::invoke(crate::expr::lower::body_hir_query)]
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fn body_hir(&self, def: DefWithBody) -> Arc<crate::expr::Body>;
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#[salsa::invoke(crate::ty::method_resolution::CrateImplBlocks::impls_in_crate_query)]
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@ -1,36 +1,30 @@
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use std::ops::Index;
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use std::sync::Arc;
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pub(crate) mod lower;
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pub(crate) mod scope;
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pub(crate) mod validation;
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use rustc_hash::FxHashMap;
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use std::{ops::Index, sync::Arc};
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use ra_arena::{impl_arena_id, map::ArenaMap, Arena, RawId};
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use ra_syntax::{
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ast::{
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self, ArgListOwner, ArrayExprKind, LiteralKind, LoopBodyOwner, NameOwner,
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TypeAscriptionOwner,
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},
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AstNode, AstPtr,
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};
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use test_utils::tested_by;
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use ra_syntax::{ast, AstPtr};
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use rustc_hash::FxHashMap;
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use crate::{
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name::{AsName, SELF_PARAM},
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path::GenericArgs,
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ty::primitive::{FloatTy, IntTy, UncertainFloatTy, UncertainIntTy},
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ty::primitive::{UncertainFloatTy, UncertainIntTy},
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type_ref::{Mutability, TypeRef},
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DefWithBody, Either, HasSource, HirDatabase, HirFileId, MacroCallLoc, MacroFileKind, Name,
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Path, Resolver,
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DefWithBody, Either, HirDatabase, Name, Path, Resolver,
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};
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pub use self::scope::ExprScopes;
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pub(crate) mod scope;
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pub(crate) mod validation;
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#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
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pub struct ExprId(RawId);
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impl_arena_id!(ExprId);
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#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
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pub struct PatId(RawId);
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impl_arena_id!(PatId);
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/// The body of an item (function, const etc.).
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#[derive(Debug, Eq, PartialEq)]
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pub struct Body {
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@ -433,10 +427,6 @@ impl Expr {
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}
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}
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#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
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pub struct PatId(RawId);
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impl_arena_id!(PatId);
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/// Explicit binding annotations given in the HIR for a binding. Note
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/// that this is not the final binding *mode* that we infer after type
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/// inference.
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@ -534,632 +524,3 @@ impl Pat {
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}
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}
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}
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// Queries
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pub(crate) struct ExprCollector<DB> {
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db: DB,
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owner: DefWithBody,
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exprs: Arena<ExprId, Expr>,
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pats: Arena<PatId, Pat>,
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source_map: BodySourceMap,
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params: Vec<PatId>,
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body_expr: Option<ExprId>,
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resolver: Resolver,
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// Expr collector expands macros along the way. original points to the file
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// we started with, current points to the current macro expansion. source
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// maps don't support macros yet, so we only record info into source map if
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// current == original (see #1196)
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original_file_id: HirFileId,
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current_file_id: HirFileId,
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}
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impl<'a, DB> ExprCollector<&'a DB>
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where
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DB: HirDatabase,
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{
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fn new(owner: DefWithBody, file_id: HirFileId, resolver: Resolver, db: &'a DB) -> Self {
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ExprCollector {
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owner,
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resolver,
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db,
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exprs: Arena::default(),
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pats: Arena::default(),
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source_map: BodySourceMap::default(),
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params: Vec::new(),
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body_expr: None,
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original_file_id: file_id,
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current_file_id: file_id,
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}
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}
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fn alloc_expr(&mut self, expr: Expr, ptr: AstPtr<ast::Expr>) -> ExprId {
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let ptr = Either::A(ptr);
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let id = self.exprs.alloc(expr);
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if self.current_file_id == self.original_file_id {
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self.source_map.expr_map.insert(ptr, id);
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self.source_map.expr_map_back.insert(id, ptr);
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}
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id
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}
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fn alloc_pat(&mut self, pat: Pat, ptr: PatPtr) -> PatId {
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let id = self.pats.alloc(pat);
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if self.current_file_id == self.original_file_id {
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self.source_map.pat_map.insert(ptr, id);
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self.source_map.pat_map_back.insert(id, ptr);
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}
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id
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}
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fn empty_block(&mut self) -> ExprId {
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let block = Expr::Block { statements: Vec::new(), tail: None };
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self.exprs.alloc(block)
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}
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fn collect_expr(&mut self, expr: ast::Expr) -> ExprId {
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let syntax_ptr = AstPtr::new(&expr);
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match expr {
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ast::Expr::IfExpr(e) => {
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let then_branch = self.collect_block_opt(e.then_branch());
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let else_branch = e.else_branch().map(|b| match b {
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ast::ElseBranch::Block(it) => self.collect_block(it),
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ast::ElseBranch::IfExpr(elif) => {
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let expr: ast::Expr = ast::Expr::cast(elif.syntax().clone()).unwrap();
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self.collect_expr(expr)
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}
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});
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let condition = match e.condition() {
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None => self.exprs.alloc(Expr::Missing),
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Some(condition) => match condition.pat() {
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None => self.collect_expr_opt(condition.expr()),
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// if let -- desugar to match
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Some(pat) => {
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let pat = self.collect_pat(pat);
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let match_expr = self.collect_expr_opt(condition.expr());
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let placeholder_pat = self.pats.alloc(Pat::Missing);
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let arms = vec![
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MatchArm { pats: vec![pat], expr: then_branch, guard: None },
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MatchArm {
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pats: vec![placeholder_pat],
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expr: else_branch.unwrap_or_else(|| self.empty_block()),
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guard: None,
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},
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];
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return self
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.alloc_expr(Expr::Match { expr: match_expr, arms }, syntax_ptr);
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}
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},
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};
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self.alloc_expr(Expr::If { condition, then_branch, else_branch }, syntax_ptr)
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}
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ast::Expr::TryBlockExpr(e) => {
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let body = self.collect_block_opt(e.body());
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self.alloc_expr(Expr::TryBlock { body }, syntax_ptr)
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}
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ast::Expr::BlockExpr(e) => self.collect_block(e),
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ast::Expr::LoopExpr(e) => {
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let body = self.collect_block_opt(e.loop_body());
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self.alloc_expr(Expr::Loop { body }, syntax_ptr)
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}
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ast::Expr::WhileExpr(e) => {
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let body = self.collect_block_opt(e.loop_body());
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let condition = match e.condition() {
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None => self.exprs.alloc(Expr::Missing),
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Some(condition) => match condition.pat() {
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None => self.collect_expr_opt(condition.expr()),
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// if let -- desugar to match
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Some(pat) => {
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tested_by!(infer_while_let);
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let pat = self.collect_pat(pat);
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let match_expr = self.collect_expr_opt(condition.expr());
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let placeholder_pat = self.pats.alloc(Pat::Missing);
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let break_ = self.exprs.alloc(Expr::Break { expr: None });
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let arms = vec![
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MatchArm { pats: vec![pat], expr: body, guard: None },
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MatchArm { pats: vec![placeholder_pat], expr: break_, guard: None },
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];
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let match_expr =
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self.exprs.alloc(Expr::Match { expr: match_expr, arms });
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return self.alloc_expr(Expr::Loop { body: match_expr }, syntax_ptr);
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}
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},
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};
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self.alloc_expr(Expr::While { condition, body }, syntax_ptr)
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}
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ast::Expr::ForExpr(e) => {
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let iterable = self.collect_expr_opt(e.iterable());
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let pat = self.collect_pat_opt(e.pat());
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let body = self.collect_block_opt(e.loop_body());
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self.alloc_expr(Expr::For { iterable, pat, body }, syntax_ptr)
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}
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ast::Expr::CallExpr(e) => {
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let callee = self.collect_expr_opt(e.expr());
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let args = if let Some(arg_list) = e.arg_list() {
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arg_list.args().map(|e| self.collect_expr(e)).collect()
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} else {
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Vec::new()
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};
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self.alloc_expr(Expr::Call { callee, args }, syntax_ptr)
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}
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ast::Expr::MethodCallExpr(e) => {
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let receiver = self.collect_expr_opt(e.expr());
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let args = if let Some(arg_list) = e.arg_list() {
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arg_list.args().map(|e| self.collect_expr(e)).collect()
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} else {
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Vec::new()
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};
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let method_name = e.name_ref().map(|nr| nr.as_name()).unwrap_or_else(Name::missing);
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let generic_args = e.type_arg_list().and_then(GenericArgs::from_ast);
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self.alloc_expr(
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Expr::MethodCall { receiver, method_name, args, generic_args },
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syntax_ptr,
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)
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}
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ast::Expr::MatchExpr(e) => {
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let expr = self.collect_expr_opt(e.expr());
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let arms = if let Some(match_arm_list) = e.match_arm_list() {
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match_arm_list
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.arms()
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.map(|arm| MatchArm {
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pats: arm.pats().map(|p| self.collect_pat(p)).collect(),
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expr: self.collect_expr_opt(arm.expr()),
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guard: arm
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.guard()
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.and_then(|guard| guard.expr())
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.map(|e| self.collect_expr(e)),
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})
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.collect()
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} else {
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Vec::new()
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};
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self.alloc_expr(Expr::Match { expr, arms }, syntax_ptr)
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}
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ast::Expr::PathExpr(e) => {
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let path =
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e.path().and_then(Path::from_ast).map(Expr::Path).unwrap_or(Expr::Missing);
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self.alloc_expr(path, syntax_ptr)
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}
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ast::Expr::ContinueExpr(_e) => {
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// FIXME: labels
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self.alloc_expr(Expr::Continue, syntax_ptr)
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}
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ast::Expr::BreakExpr(e) => {
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let expr = e.expr().map(|e| self.collect_expr(e));
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self.alloc_expr(Expr::Break { expr }, syntax_ptr)
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}
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ast::Expr::ParenExpr(e) => {
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let inner = self.collect_expr_opt(e.expr());
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// make the paren expr point to the inner expression as well
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self.source_map.expr_map.insert(Either::A(syntax_ptr), inner);
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inner
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}
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ast::Expr::ReturnExpr(e) => {
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let expr = e.expr().map(|e| self.collect_expr(e));
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self.alloc_expr(Expr::Return { expr }, syntax_ptr)
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}
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ast::Expr::RecordLit(e) => {
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let path = e.path().and_then(Path::from_ast);
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let mut field_ptrs = Vec::new();
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let record_lit = if let Some(nfl) = e.record_field_list() {
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let fields = nfl
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.fields()
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.inspect(|field| field_ptrs.push(AstPtr::new(field)))
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.map(|field| RecordLitField {
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name: field
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.name_ref()
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.map(|nr| nr.as_name())
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.unwrap_or_else(Name::missing),
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expr: if let Some(e) = field.expr() {
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self.collect_expr(e)
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} else if let Some(nr) = field.name_ref() {
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// field shorthand
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let id = self.exprs.alloc(Expr::Path(Path::from_name_ref(&nr)));
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let ptr = Either::B(AstPtr::new(&field));
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self.source_map.expr_map.insert(ptr, id);
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self.source_map.expr_map_back.insert(id, ptr);
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id
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} else {
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self.exprs.alloc(Expr::Missing)
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},
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})
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.collect();
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let spread = nfl.spread().map(|s| self.collect_expr(s));
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Expr::RecordLit { path, fields, spread }
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} else {
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Expr::RecordLit { path, fields: Vec::new(), spread: None }
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};
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let res = self.alloc_expr(record_lit, syntax_ptr);
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for (i, ptr) in field_ptrs.into_iter().enumerate() {
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self.source_map.field_map.insert((res, i), ptr);
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}
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res
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}
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ast::Expr::FieldExpr(e) => {
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let expr = self.collect_expr_opt(e.expr());
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let name = match e.field_access() {
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Some(kind) => kind.as_name(),
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_ => Name::missing(),
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};
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self.alloc_expr(Expr::Field { expr, name }, syntax_ptr)
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}
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ast::Expr::AwaitExpr(e) => {
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let expr = self.collect_expr_opt(e.expr());
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self.alloc_expr(Expr::Await { expr }, syntax_ptr)
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}
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ast::Expr::TryExpr(e) => {
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let expr = self.collect_expr_opt(e.expr());
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self.alloc_expr(Expr::Try { expr }, syntax_ptr)
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}
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ast::Expr::CastExpr(e) => {
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let expr = self.collect_expr_opt(e.expr());
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let type_ref = TypeRef::from_ast_opt(e.type_ref());
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self.alloc_expr(Expr::Cast { expr, type_ref }, syntax_ptr)
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}
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ast::Expr::RefExpr(e) => {
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let expr = self.collect_expr_opt(e.expr());
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let mutability = Mutability::from_mutable(e.is_mut());
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self.alloc_expr(Expr::Ref { expr, mutability }, syntax_ptr)
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}
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ast::Expr::PrefixExpr(e) => {
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let expr = self.collect_expr_opt(e.expr());
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if let Some(op) = e.op_kind() {
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self.alloc_expr(Expr::UnaryOp { expr, op }, syntax_ptr)
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} else {
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self.alloc_expr(Expr::Missing, syntax_ptr)
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}
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}
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ast::Expr::LambdaExpr(e) => {
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let mut args = Vec::new();
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let mut arg_types = Vec::new();
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if let Some(pl) = e.param_list() {
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for param in pl.params() {
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let pat = self.collect_pat_opt(param.pat());
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let type_ref = param.ascribed_type().map(TypeRef::from_ast);
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args.push(pat);
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arg_types.push(type_ref);
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}
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}
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let body = self.collect_expr_opt(e.body());
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self.alloc_expr(Expr::Lambda { args, arg_types, body }, syntax_ptr)
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}
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ast::Expr::BinExpr(e) => {
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let lhs = self.collect_expr_opt(e.lhs());
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let rhs = self.collect_expr_opt(e.rhs());
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let op = e.op_kind().map(BinaryOp::from);
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self.alloc_expr(Expr::BinaryOp { lhs, rhs, op }, syntax_ptr)
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}
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ast::Expr::TupleExpr(e) => {
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let exprs = e.exprs().map(|expr| self.collect_expr(expr)).collect();
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self.alloc_expr(Expr::Tuple { exprs }, syntax_ptr)
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}
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ast::Expr::ArrayExpr(e) => {
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let kind = e.kind();
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match kind {
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ArrayExprKind::ElementList(e) => {
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let exprs = e.map(|expr| self.collect_expr(expr)).collect();
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self.alloc_expr(Expr::Array(Array::ElementList(exprs)), syntax_ptr)
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}
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ArrayExprKind::Repeat { initializer, repeat } => {
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let initializer = self.collect_expr_opt(initializer);
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let repeat = self.collect_expr_opt(repeat);
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self.alloc_expr(
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Expr::Array(Array::Repeat { initializer, repeat }),
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syntax_ptr,
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)
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}
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}
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}
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ast::Expr::Literal(e) => {
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let lit = match e.kind() {
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LiteralKind::IntNumber { suffix } => {
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let known_name = suffix
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.and_then(|it| IntTy::from_suffix(&it).map(UncertainIntTy::Known));
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Literal::Int(
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Default::default(),
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known_name.unwrap_or(UncertainIntTy::Unknown),
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)
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}
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LiteralKind::FloatNumber { suffix } => {
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let known_name = suffix
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.and_then(|it| FloatTy::from_suffix(&it).map(UncertainFloatTy::Known));
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Literal::Float(
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Default::default(),
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known_name.unwrap_or(UncertainFloatTy::Unknown),
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)
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}
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LiteralKind::ByteString => Literal::ByteString(Default::default()),
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LiteralKind::String => Literal::String(Default::default()),
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LiteralKind::Byte => {
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Literal::Int(Default::default(), UncertainIntTy::Known(IntTy::u8()))
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}
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LiteralKind::Bool => Literal::Bool(Default::default()),
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LiteralKind::Char => Literal::Char(Default::default()),
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};
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self.alloc_expr(Expr::Literal(lit), syntax_ptr)
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}
|
||||
ast::Expr::IndexExpr(e) => {
|
||||
let base = self.collect_expr_opt(e.base());
|
||||
let index = self.collect_expr_opt(e.index());
|
||||
self.alloc_expr(Expr::Index { base, index }, syntax_ptr)
|
||||
}
|
||||
|
||||
// FIXME implement HIR for these:
|
||||
ast::Expr::Label(_e) => self.alloc_expr(Expr::Missing, syntax_ptr),
|
||||
ast::Expr::RangeExpr(_e) => self.alloc_expr(Expr::Missing, syntax_ptr),
|
||||
ast::Expr::MacroCall(e) => {
|
||||
let ast_id = self
|
||||
.db
|
||||
.ast_id_map(self.current_file_id)
|
||||
.ast_id(&e)
|
||||
.with_file_id(self.current_file_id);
|
||||
|
||||
if let Some(path) = e.path().and_then(Path::from_ast) {
|
||||
if let Some(def) = self.resolver.resolve_path_as_macro(self.db, &path) {
|
||||
let call_id = MacroCallLoc { def: def.id, ast_id }.id(self.db);
|
||||
let file_id = call_id.as_file(MacroFileKind::Expr);
|
||||
if let Some(node) = self.db.parse_or_expand(file_id) {
|
||||
if let Some(expr) = ast::Expr::cast(node) {
|
||||
log::debug!("macro expansion {:#?}", expr.syntax());
|
||||
let old_file_id =
|
||||
std::mem::replace(&mut self.current_file_id, file_id);
|
||||
let id = self.collect_expr(expr);
|
||||
self.current_file_id = old_file_id;
|
||||
return id;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
// FIXME: Instead of just dropping the error from expansion
|
||||
// report it
|
||||
self.alloc_expr(Expr::Missing, syntax_ptr)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn collect_expr_opt(&mut self, expr: Option<ast::Expr>) -> ExprId {
|
||||
if let Some(expr) = expr {
|
||||
self.collect_expr(expr)
|
||||
} else {
|
||||
self.exprs.alloc(Expr::Missing)
|
||||
}
|
||||
}
|
||||
|
||||
fn collect_block(&mut self, expr: ast::BlockExpr) -> ExprId {
|
||||
let syntax_node_ptr = AstPtr::new(&expr.clone().into());
|
||||
let block = match expr.block() {
|
||||
Some(block) => block,
|
||||
None => return self.alloc_expr(Expr::Missing, syntax_node_ptr),
|
||||
};
|
||||
let statements = block
|
||||
.statements()
|
||||
.map(|s| match s {
|
||||
ast::Stmt::LetStmt(stmt) => {
|
||||
let pat = self.collect_pat_opt(stmt.pat());
|
||||
let type_ref = stmt.ascribed_type().map(TypeRef::from_ast);
|
||||
let initializer = stmt.initializer().map(|e| self.collect_expr(e));
|
||||
Statement::Let { pat, type_ref, initializer }
|
||||
}
|
||||
ast::Stmt::ExprStmt(stmt) => Statement::Expr(self.collect_expr_opt(stmt.expr())),
|
||||
})
|
||||
.collect();
|
||||
let tail = block.expr().map(|e| self.collect_expr(e));
|
||||
self.alloc_expr(Expr::Block { statements, tail }, syntax_node_ptr)
|
||||
}
|
||||
|
||||
fn collect_block_opt(&mut self, expr: Option<ast::BlockExpr>) -> ExprId {
|
||||
if let Some(block) = expr {
|
||||
self.collect_block(block)
|
||||
} else {
|
||||
self.exprs.alloc(Expr::Missing)
|
||||
}
|
||||
}
|
||||
|
||||
fn collect_pat(&mut self, pat: ast::Pat) -> PatId {
|
||||
let pattern = match &pat {
|
||||
ast::Pat::BindPat(bp) => {
|
||||
let name = bp.name().map(|nr| nr.as_name()).unwrap_or_else(Name::missing);
|
||||
let annotation = BindingAnnotation::new(bp.is_mutable(), bp.is_ref());
|
||||
let subpat = bp.pat().map(|subpat| self.collect_pat(subpat));
|
||||
Pat::Bind { name, mode: annotation, subpat }
|
||||
}
|
||||
ast::Pat::TupleStructPat(p) => {
|
||||
let path = p.path().and_then(Path::from_ast);
|
||||
let args = p.args().map(|p| self.collect_pat(p)).collect();
|
||||
Pat::TupleStruct { path, args }
|
||||
}
|
||||
ast::Pat::RefPat(p) => {
|
||||
let pat = self.collect_pat_opt(p.pat());
|
||||
let mutability = Mutability::from_mutable(p.is_mut());
|
||||
Pat::Ref { pat, mutability }
|
||||
}
|
||||
ast::Pat::PathPat(p) => {
|
||||
let path = p.path().and_then(Path::from_ast);
|
||||
path.map(Pat::Path).unwrap_or(Pat::Missing)
|
||||
}
|
||||
ast::Pat::TuplePat(p) => {
|
||||
let args = p.args().map(|p| self.collect_pat(p)).collect();
|
||||
Pat::Tuple(args)
|
||||
}
|
||||
ast::Pat::PlaceholderPat(_) => Pat::Wild,
|
||||
ast::Pat::RecordPat(p) => {
|
||||
let path = p.path().and_then(Path::from_ast);
|
||||
let record_field_pat_list =
|
||||
p.record_field_pat_list().expect("every struct should have a field list");
|
||||
let mut fields: Vec<_> = record_field_pat_list
|
||||
.bind_pats()
|
||||
.filter_map(|bind_pat| {
|
||||
let ast_pat =
|
||||
ast::Pat::cast(bind_pat.syntax().clone()).expect("bind pat is a pat");
|
||||
let pat = self.collect_pat(ast_pat);
|
||||
let name = bind_pat.name()?.as_name();
|
||||
Some(RecordFieldPat { name, pat })
|
||||
})
|
||||
.collect();
|
||||
let iter = record_field_pat_list.record_field_pats().filter_map(|f| {
|
||||
let ast_pat = f.pat()?;
|
||||
let pat = self.collect_pat(ast_pat);
|
||||
let name = f.name()?.as_name();
|
||||
Some(RecordFieldPat { name, pat })
|
||||
});
|
||||
fields.extend(iter);
|
||||
|
||||
Pat::Struct { path, args: fields }
|
||||
}
|
||||
|
||||
// FIXME: implement
|
||||
ast::Pat::BoxPat(_) => Pat::Missing,
|
||||
ast::Pat::LiteralPat(_) => Pat::Missing,
|
||||
ast::Pat::SlicePat(_) | ast::Pat::RangePat(_) => Pat::Missing,
|
||||
};
|
||||
let ptr = AstPtr::new(&pat);
|
||||
self.alloc_pat(pattern, Either::A(ptr))
|
||||
}
|
||||
|
||||
fn collect_pat_opt(&mut self, pat: Option<ast::Pat>) -> PatId {
|
||||
if let Some(pat) = pat {
|
||||
self.collect_pat(pat)
|
||||
} else {
|
||||
self.pats.alloc(Pat::Missing)
|
||||
}
|
||||
}
|
||||
|
||||
fn collect_const_body(&mut self, node: ast::ConstDef) {
|
||||
let body = self.collect_expr_opt(node.body());
|
||||
self.body_expr = Some(body);
|
||||
}
|
||||
|
||||
fn collect_static_body(&mut self, node: ast::StaticDef) {
|
||||
let body = self.collect_expr_opt(node.body());
|
||||
self.body_expr = Some(body);
|
||||
}
|
||||
|
||||
fn collect_fn_body(&mut self, node: ast::FnDef) {
|
||||
if let Some(param_list) = node.param_list() {
|
||||
if let Some(self_param) = param_list.self_param() {
|
||||
let ptr = AstPtr::new(&self_param);
|
||||
let param_pat = self.alloc_pat(
|
||||
Pat::Bind {
|
||||
name: SELF_PARAM,
|
||||
mode: BindingAnnotation::Unannotated,
|
||||
subpat: None,
|
||||
},
|
||||
Either::B(ptr),
|
||||
);
|
||||
self.params.push(param_pat);
|
||||
}
|
||||
|
||||
for param in param_list.params() {
|
||||
let pat = if let Some(pat) = param.pat() {
|
||||
pat
|
||||
} else {
|
||||
continue;
|
||||
};
|
||||
let param_pat = self.collect_pat(pat);
|
||||
self.params.push(param_pat);
|
||||
}
|
||||
};
|
||||
|
||||
let body = self.collect_block_opt(node.body());
|
||||
self.body_expr = Some(body);
|
||||
}
|
||||
|
||||
fn finish(self) -> (Body, BodySourceMap) {
|
||||
let body = Body {
|
||||
owner: self.owner,
|
||||
exprs: self.exprs,
|
||||
pats: self.pats,
|
||||
params: self.params,
|
||||
body_expr: self.body_expr.expect("A body should have been collected"),
|
||||
};
|
||||
(body, self.source_map)
|
||||
}
|
||||
}
|
||||
|
||||
impl From<ast::BinOp> for BinaryOp {
|
||||
fn from(ast_op: ast::BinOp) -> Self {
|
||||
match ast_op {
|
||||
ast::BinOp::BooleanOr => BinaryOp::LogicOp(LogicOp::Or),
|
||||
ast::BinOp::BooleanAnd => BinaryOp::LogicOp(LogicOp::And),
|
||||
ast::BinOp::EqualityTest => BinaryOp::CmpOp(CmpOp::Eq { negated: false }),
|
||||
ast::BinOp::NegatedEqualityTest => BinaryOp::CmpOp(CmpOp::Eq { negated: true }),
|
||||
ast::BinOp::LesserEqualTest => {
|
||||
BinaryOp::CmpOp(CmpOp::Ord { ordering: Ordering::Less, strict: false })
|
||||
}
|
||||
ast::BinOp::GreaterEqualTest => {
|
||||
BinaryOp::CmpOp(CmpOp::Ord { ordering: Ordering::Greater, strict: false })
|
||||
}
|
||||
ast::BinOp::LesserTest => {
|
||||
BinaryOp::CmpOp(CmpOp::Ord { ordering: Ordering::Less, strict: true })
|
||||
}
|
||||
ast::BinOp::GreaterTest => {
|
||||
BinaryOp::CmpOp(CmpOp::Ord { ordering: Ordering::Greater, strict: true })
|
||||
}
|
||||
ast::BinOp::Addition => BinaryOp::ArithOp(ArithOp::Add),
|
||||
ast::BinOp::Multiplication => BinaryOp::ArithOp(ArithOp::Mul),
|
||||
ast::BinOp::Subtraction => BinaryOp::ArithOp(ArithOp::Sub),
|
||||
ast::BinOp::Division => BinaryOp::ArithOp(ArithOp::Div),
|
||||
ast::BinOp::Remainder => BinaryOp::ArithOp(ArithOp::Rem),
|
||||
ast::BinOp::LeftShift => BinaryOp::ArithOp(ArithOp::Shl),
|
||||
ast::BinOp::RightShift => BinaryOp::ArithOp(ArithOp::Shr),
|
||||
ast::BinOp::BitwiseXor => BinaryOp::ArithOp(ArithOp::BitXor),
|
||||
ast::BinOp::BitwiseOr => BinaryOp::ArithOp(ArithOp::BitOr),
|
||||
ast::BinOp::BitwiseAnd => BinaryOp::ArithOp(ArithOp::BitAnd),
|
||||
ast::BinOp::Assignment => BinaryOp::Assignment { op: None },
|
||||
ast::BinOp::AddAssign => BinaryOp::Assignment { op: Some(ArithOp::Add) },
|
||||
ast::BinOp::DivAssign => BinaryOp::Assignment { op: Some(ArithOp::Div) },
|
||||
ast::BinOp::MulAssign => BinaryOp::Assignment { op: Some(ArithOp::Mul) },
|
||||
ast::BinOp::RemAssign => BinaryOp::Assignment { op: Some(ArithOp::Rem) },
|
||||
ast::BinOp::ShlAssign => BinaryOp::Assignment { op: Some(ArithOp::Shl) },
|
||||
ast::BinOp::ShrAssign => BinaryOp::Assignment { op: Some(ArithOp::Shr) },
|
||||
ast::BinOp::SubAssign => BinaryOp::Assignment { op: Some(ArithOp::Sub) },
|
||||
ast::BinOp::BitOrAssign => BinaryOp::Assignment { op: Some(ArithOp::BitOr) },
|
||||
ast::BinOp::BitAndAssign => BinaryOp::Assignment { op: Some(ArithOp::BitAnd) },
|
||||
ast::BinOp::BitXorAssign => BinaryOp::Assignment { op: Some(ArithOp::BitXor) },
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
pub(crate) fn body_with_source_map_query(
|
||||
db: &impl HirDatabase,
|
||||
def: DefWithBody,
|
||||
) -> (Arc<Body>, Arc<BodySourceMap>) {
|
||||
let mut collector;
|
||||
|
||||
match def {
|
||||
DefWithBody::Const(ref c) => {
|
||||
let src = c.source(db);
|
||||
collector = ExprCollector::new(def, src.file_id, def.resolver(db), db);
|
||||
collector.collect_const_body(src.ast)
|
||||
}
|
||||
DefWithBody::Function(ref f) => {
|
||||
let src = f.source(db);
|
||||
collector = ExprCollector::new(def, src.file_id, def.resolver(db), db);
|
||||
collector.collect_fn_body(src.ast)
|
||||
}
|
||||
DefWithBody::Static(ref s) => {
|
||||
let src = s.source(db);
|
||||
collector = ExprCollector::new(def, src.file_id, def.resolver(db), db);
|
||||
collector.collect_static_body(src.ast)
|
||||
}
|
||||
}
|
||||
|
||||
let (body, source_map) = collector.finish();
|
||||
(Arc::new(body), Arc::new(source_map))
|
||||
}
|
||||
|
||||
pub(crate) fn body_hir_query(db: &impl HirDatabase, def: DefWithBody) -> Arc<Body> {
|
||||
db.body_with_source_map(def).0
|
||||
}
|
||||
|
|
|
|||
653
crates/ra_hir/src/expr/lower.rs
Normal file
653
crates/ra_hir/src/expr/lower.rs
Normal file
|
|
@ -0,0 +1,653 @@
|
|||
use std::sync::Arc;
|
||||
|
||||
use ra_arena::Arena;
|
||||
use ra_syntax::{
|
||||
ast::{
|
||||
self, ArgListOwner, ArrayExprKind, LiteralKind, LoopBodyOwner, NameOwner,
|
||||
TypeAscriptionOwner,
|
||||
},
|
||||
AstNode, AstPtr,
|
||||
};
|
||||
use test_utils::tested_by;
|
||||
|
||||
use crate::{
|
||||
name::{AsName, Name, SELF_PARAM},
|
||||
path::GenericArgs,
|
||||
ty::primitive::{FloatTy, IntTy, UncertainFloatTy, UncertainIntTy},
|
||||
type_ref::TypeRef,
|
||||
DefWithBody, Either, HasSource, HirDatabase, HirFileId, MacroCallLoc, MacroFileKind,
|
||||
Mutability, Path, Resolver,
|
||||
};
|
||||
|
||||
use super::{
|
||||
ArithOp, Array, BinaryOp, BindingAnnotation, Body, BodySourceMap, CmpOp, Expr, ExprId,
|
||||
Literal, LogicOp, MatchArm, Ordering, Pat, PatId, PatPtr, RecordFieldPat, RecordLitField,
|
||||
Statement,
|
||||
};
|
||||
|
||||
pub(crate) struct ExprCollector<DB> {
|
||||
db: DB,
|
||||
owner: DefWithBody,
|
||||
exprs: Arena<ExprId, Expr>,
|
||||
pats: Arena<PatId, Pat>,
|
||||
source_map: BodySourceMap,
|
||||
params: Vec<PatId>,
|
||||
body_expr: Option<ExprId>,
|
||||
resolver: Resolver,
|
||||
// Expr collector expands macros along the way. original points to the file
|
||||
// we started with, current points to the current macro expansion. source
|
||||
// maps don't support macros yet, so we only record info into source map if
|
||||
// current == original (see #1196)
|
||||
original_file_id: HirFileId,
|
||||
current_file_id: HirFileId,
|
||||
}
|
||||
|
||||
impl<'a, DB> ExprCollector<&'a DB>
|
||||
where
|
||||
DB: HirDatabase,
|
||||
{
|
||||
fn new(owner: DefWithBody, file_id: HirFileId, resolver: Resolver, db: &'a DB) -> Self {
|
||||
ExprCollector {
|
||||
owner,
|
||||
resolver,
|
||||
db,
|
||||
exprs: Arena::default(),
|
||||
pats: Arena::default(),
|
||||
source_map: BodySourceMap::default(),
|
||||
params: Vec::new(),
|
||||
body_expr: None,
|
||||
original_file_id: file_id,
|
||||
current_file_id: file_id,
|
||||
}
|
||||
}
|
||||
fn alloc_expr(&mut self, expr: Expr, ptr: AstPtr<ast::Expr>) -> ExprId {
|
||||
let ptr = Either::A(ptr);
|
||||
let id = self.exprs.alloc(expr);
|
||||
if self.current_file_id == self.original_file_id {
|
||||
self.source_map.expr_map.insert(ptr, id);
|
||||
self.source_map.expr_map_back.insert(id, ptr);
|
||||
}
|
||||
id
|
||||
}
|
||||
|
||||
fn alloc_pat(&mut self, pat: Pat, ptr: PatPtr) -> PatId {
|
||||
let id = self.pats.alloc(pat);
|
||||
|
||||
if self.current_file_id == self.original_file_id {
|
||||
self.source_map.pat_map.insert(ptr, id);
|
||||
self.source_map.pat_map_back.insert(id, ptr);
|
||||
}
|
||||
|
||||
id
|
||||
}
|
||||
|
||||
fn empty_block(&mut self) -> ExprId {
|
||||
let block = Expr::Block { statements: Vec::new(), tail: None };
|
||||
self.exprs.alloc(block)
|
||||
}
|
||||
|
||||
fn collect_expr(&mut self, expr: ast::Expr) -> ExprId {
|
||||
let syntax_ptr = AstPtr::new(&expr);
|
||||
match expr {
|
||||
ast::Expr::IfExpr(e) => {
|
||||
let then_branch = self.collect_block_opt(e.then_branch());
|
||||
|
||||
let else_branch = e.else_branch().map(|b| match b {
|
||||
ast::ElseBranch::Block(it) => self.collect_block(it),
|
||||
ast::ElseBranch::IfExpr(elif) => {
|
||||
let expr: ast::Expr = ast::Expr::cast(elif.syntax().clone()).unwrap();
|
||||
self.collect_expr(expr)
|
||||
}
|
||||
});
|
||||
|
||||
let condition = match e.condition() {
|
||||
None => self.exprs.alloc(Expr::Missing),
|
||||
Some(condition) => match condition.pat() {
|
||||
None => self.collect_expr_opt(condition.expr()),
|
||||
// if let -- desugar to match
|
||||
Some(pat) => {
|
||||
let pat = self.collect_pat(pat);
|
||||
let match_expr = self.collect_expr_opt(condition.expr());
|
||||
let placeholder_pat = self.pats.alloc(Pat::Missing);
|
||||
let arms = vec![
|
||||
MatchArm { pats: vec![pat], expr: then_branch, guard: None },
|
||||
MatchArm {
|
||||
pats: vec![placeholder_pat],
|
||||
expr: else_branch.unwrap_or_else(|| self.empty_block()),
|
||||
guard: None,
|
||||
},
|
||||
];
|
||||
return self
|
||||
.alloc_expr(Expr::Match { expr: match_expr, arms }, syntax_ptr);
|
||||
}
|
||||
},
|
||||
};
|
||||
|
||||
self.alloc_expr(Expr::If { condition, then_branch, else_branch }, syntax_ptr)
|
||||
}
|
||||
ast::Expr::TryBlockExpr(e) => {
|
||||
let body = self.collect_block_opt(e.body());
|
||||
self.alloc_expr(Expr::TryBlock { body }, syntax_ptr)
|
||||
}
|
||||
ast::Expr::BlockExpr(e) => self.collect_block(e),
|
||||
ast::Expr::LoopExpr(e) => {
|
||||
let body = self.collect_block_opt(e.loop_body());
|
||||
self.alloc_expr(Expr::Loop { body }, syntax_ptr)
|
||||
}
|
||||
ast::Expr::WhileExpr(e) => {
|
||||
let body = self.collect_block_opt(e.loop_body());
|
||||
|
||||
let condition = match e.condition() {
|
||||
None => self.exprs.alloc(Expr::Missing),
|
||||
Some(condition) => match condition.pat() {
|
||||
None => self.collect_expr_opt(condition.expr()),
|
||||
// if let -- desugar to match
|
||||
Some(pat) => {
|
||||
tested_by!(infer_while_let);
|
||||
let pat = self.collect_pat(pat);
|
||||
let match_expr = self.collect_expr_opt(condition.expr());
|
||||
let placeholder_pat = self.pats.alloc(Pat::Missing);
|
||||
let break_ = self.exprs.alloc(Expr::Break { expr: None });
|
||||
let arms = vec![
|
||||
MatchArm { pats: vec![pat], expr: body, guard: None },
|
||||
MatchArm { pats: vec![placeholder_pat], expr: break_, guard: None },
|
||||
];
|
||||
let match_expr =
|
||||
self.exprs.alloc(Expr::Match { expr: match_expr, arms });
|
||||
return self.alloc_expr(Expr::Loop { body: match_expr }, syntax_ptr);
|
||||
}
|
||||
},
|
||||
};
|
||||
|
||||
self.alloc_expr(Expr::While { condition, body }, syntax_ptr)
|
||||
}
|
||||
ast::Expr::ForExpr(e) => {
|
||||
let iterable = self.collect_expr_opt(e.iterable());
|
||||
let pat = self.collect_pat_opt(e.pat());
|
||||
let body = self.collect_block_opt(e.loop_body());
|
||||
self.alloc_expr(Expr::For { iterable, pat, body }, syntax_ptr)
|
||||
}
|
||||
ast::Expr::CallExpr(e) => {
|
||||
let callee = self.collect_expr_opt(e.expr());
|
||||
let args = if let Some(arg_list) = e.arg_list() {
|
||||
arg_list.args().map(|e| self.collect_expr(e)).collect()
|
||||
} else {
|
||||
Vec::new()
|
||||
};
|
||||
self.alloc_expr(Expr::Call { callee, args }, syntax_ptr)
|
||||
}
|
||||
ast::Expr::MethodCallExpr(e) => {
|
||||
let receiver = self.collect_expr_opt(e.expr());
|
||||
let args = if let Some(arg_list) = e.arg_list() {
|
||||
arg_list.args().map(|e| self.collect_expr(e)).collect()
|
||||
} else {
|
||||
Vec::new()
|
||||
};
|
||||
let method_name = e.name_ref().map(|nr| nr.as_name()).unwrap_or_else(Name::missing);
|
||||
let generic_args = e.type_arg_list().and_then(GenericArgs::from_ast);
|
||||
self.alloc_expr(
|
||||
Expr::MethodCall { receiver, method_name, args, generic_args },
|
||||
syntax_ptr,
|
||||
)
|
||||
}
|
||||
ast::Expr::MatchExpr(e) => {
|
||||
let expr = self.collect_expr_opt(e.expr());
|
||||
let arms = if let Some(match_arm_list) = e.match_arm_list() {
|
||||
match_arm_list
|
||||
.arms()
|
||||
.map(|arm| MatchArm {
|
||||
pats: arm.pats().map(|p| self.collect_pat(p)).collect(),
|
||||
expr: self.collect_expr_opt(arm.expr()),
|
||||
guard: arm
|
||||
.guard()
|
||||
.and_then(|guard| guard.expr())
|
||||
.map(|e| self.collect_expr(e)),
|
||||
})
|
||||
.collect()
|
||||
} else {
|
||||
Vec::new()
|
||||
};
|
||||
self.alloc_expr(Expr::Match { expr, arms }, syntax_ptr)
|
||||
}
|
||||
ast::Expr::PathExpr(e) => {
|
||||
let path =
|
||||
e.path().and_then(Path::from_ast).map(Expr::Path).unwrap_or(Expr::Missing);
|
||||
self.alloc_expr(path, syntax_ptr)
|
||||
}
|
||||
ast::Expr::ContinueExpr(_e) => {
|
||||
// FIXME: labels
|
||||
self.alloc_expr(Expr::Continue, syntax_ptr)
|
||||
}
|
||||
ast::Expr::BreakExpr(e) => {
|
||||
let expr = e.expr().map(|e| self.collect_expr(e));
|
||||
self.alloc_expr(Expr::Break { expr }, syntax_ptr)
|
||||
}
|
||||
ast::Expr::ParenExpr(e) => {
|
||||
let inner = self.collect_expr_opt(e.expr());
|
||||
// make the paren expr point to the inner expression as well
|
||||
self.source_map.expr_map.insert(Either::A(syntax_ptr), inner);
|
||||
inner
|
||||
}
|
||||
ast::Expr::ReturnExpr(e) => {
|
||||
let expr = e.expr().map(|e| self.collect_expr(e));
|
||||
self.alloc_expr(Expr::Return { expr }, syntax_ptr)
|
||||
}
|
||||
ast::Expr::RecordLit(e) => {
|
||||
let path = e.path().and_then(Path::from_ast);
|
||||
let mut field_ptrs = Vec::new();
|
||||
let record_lit = if let Some(nfl) = e.record_field_list() {
|
||||
let fields = nfl
|
||||
.fields()
|
||||
.inspect(|field| field_ptrs.push(AstPtr::new(field)))
|
||||
.map(|field| RecordLitField {
|
||||
name: field
|
||||
.name_ref()
|
||||
.map(|nr| nr.as_name())
|
||||
.unwrap_or_else(Name::missing),
|
||||
expr: if let Some(e) = field.expr() {
|
||||
self.collect_expr(e)
|
||||
} else if let Some(nr) = field.name_ref() {
|
||||
// field shorthand
|
||||
let id = self.exprs.alloc(Expr::Path(Path::from_name_ref(&nr)));
|
||||
let ptr = Either::B(AstPtr::new(&field));
|
||||
self.source_map.expr_map.insert(ptr, id);
|
||||
self.source_map.expr_map_back.insert(id, ptr);
|
||||
id
|
||||
} else {
|
||||
self.exprs.alloc(Expr::Missing)
|
||||
},
|
||||
})
|
||||
.collect();
|
||||
let spread = nfl.spread().map(|s| self.collect_expr(s));
|
||||
Expr::RecordLit { path, fields, spread }
|
||||
} else {
|
||||
Expr::RecordLit { path, fields: Vec::new(), spread: None }
|
||||
};
|
||||
|
||||
let res = self.alloc_expr(record_lit, syntax_ptr);
|
||||
for (i, ptr) in field_ptrs.into_iter().enumerate() {
|
||||
self.source_map.field_map.insert((res, i), ptr);
|
||||
}
|
||||
res
|
||||
}
|
||||
ast::Expr::FieldExpr(e) => {
|
||||
let expr = self.collect_expr_opt(e.expr());
|
||||
let name = match e.field_access() {
|
||||
Some(kind) => kind.as_name(),
|
||||
_ => Name::missing(),
|
||||
};
|
||||
self.alloc_expr(Expr::Field { expr, name }, syntax_ptr)
|
||||
}
|
||||
ast::Expr::AwaitExpr(e) => {
|
||||
let expr = self.collect_expr_opt(e.expr());
|
||||
self.alloc_expr(Expr::Await { expr }, syntax_ptr)
|
||||
}
|
||||
ast::Expr::TryExpr(e) => {
|
||||
let expr = self.collect_expr_opt(e.expr());
|
||||
self.alloc_expr(Expr::Try { expr }, syntax_ptr)
|
||||
}
|
||||
ast::Expr::CastExpr(e) => {
|
||||
let expr = self.collect_expr_opt(e.expr());
|
||||
let type_ref = TypeRef::from_ast_opt(e.type_ref());
|
||||
self.alloc_expr(Expr::Cast { expr, type_ref }, syntax_ptr)
|
||||
}
|
||||
ast::Expr::RefExpr(e) => {
|
||||
let expr = self.collect_expr_opt(e.expr());
|
||||
let mutability = Mutability::from_mutable(e.is_mut());
|
||||
self.alloc_expr(Expr::Ref { expr, mutability }, syntax_ptr)
|
||||
}
|
||||
ast::Expr::PrefixExpr(e) => {
|
||||
let expr = self.collect_expr_opt(e.expr());
|
||||
if let Some(op) = e.op_kind() {
|
||||
self.alloc_expr(Expr::UnaryOp { expr, op }, syntax_ptr)
|
||||
} else {
|
||||
self.alloc_expr(Expr::Missing, syntax_ptr)
|
||||
}
|
||||
}
|
||||
ast::Expr::LambdaExpr(e) => {
|
||||
let mut args = Vec::new();
|
||||
let mut arg_types = Vec::new();
|
||||
if let Some(pl) = e.param_list() {
|
||||
for param in pl.params() {
|
||||
let pat = self.collect_pat_opt(param.pat());
|
||||
let type_ref = param.ascribed_type().map(TypeRef::from_ast);
|
||||
args.push(pat);
|
||||
arg_types.push(type_ref);
|
||||
}
|
||||
}
|
||||
let body = self.collect_expr_opt(e.body());
|
||||
self.alloc_expr(Expr::Lambda { args, arg_types, body }, syntax_ptr)
|
||||
}
|
||||
ast::Expr::BinExpr(e) => {
|
||||
let lhs = self.collect_expr_opt(e.lhs());
|
||||
let rhs = self.collect_expr_opt(e.rhs());
|
||||
let op = e.op_kind().map(BinaryOp::from);
|
||||
self.alloc_expr(Expr::BinaryOp { lhs, rhs, op }, syntax_ptr)
|
||||
}
|
||||
ast::Expr::TupleExpr(e) => {
|
||||
let exprs = e.exprs().map(|expr| self.collect_expr(expr)).collect();
|
||||
self.alloc_expr(Expr::Tuple { exprs }, syntax_ptr)
|
||||
}
|
||||
|
||||
ast::Expr::ArrayExpr(e) => {
|
||||
let kind = e.kind();
|
||||
|
||||
match kind {
|
||||
ArrayExprKind::ElementList(e) => {
|
||||
let exprs = e.map(|expr| self.collect_expr(expr)).collect();
|
||||
self.alloc_expr(Expr::Array(Array::ElementList(exprs)), syntax_ptr)
|
||||
}
|
||||
ArrayExprKind::Repeat { initializer, repeat } => {
|
||||
let initializer = self.collect_expr_opt(initializer);
|
||||
let repeat = self.collect_expr_opt(repeat);
|
||||
self.alloc_expr(
|
||||
Expr::Array(Array::Repeat { initializer, repeat }),
|
||||
syntax_ptr,
|
||||
)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
ast::Expr::Literal(e) => {
|
||||
let lit = match e.kind() {
|
||||
LiteralKind::IntNumber { suffix } => {
|
||||
let known_name = suffix
|
||||
.and_then(|it| IntTy::from_suffix(&it).map(UncertainIntTy::Known));
|
||||
|
||||
Literal::Int(
|
||||
Default::default(),
|
||||
known_name.unwrap_or(UncertainIntTy::Unknown),
|
||||
)
|
||||
}
|
||||
LiteralKind::FloatNumber { suffix } => {
|
||||
let known_name = suffix
|
||||
.and_then(|it| FloatTy::from_suffix(&it).map(UncertainFloatTy::Known));
|
||||
|
||||
Literal::Float(
|
||||
Default::default(),
|
||||
known_name.unwrap_or(UncertainFloatTy::Unknown),
|
||||
)
|
||||
}
|
||||
LiteralKind::ByteString => Literal::ByteString(Default::default()),
|
||||
LiteralKind::String => Literal::String(Default::default()),
|
||||
LiteralKind::Byte => {
|
||||
Literal::Int(Default::default(), UncertainIntTy::Known(IntTy::u8()))
|
||||
}
|
||||
LiteralKind::Bool => Literal::Bool(Default::default()),
|
||||
LiteralKind::Char => Literal::Char(Default::default()),
|
||||
};
|
||||
self.alloc_expr(Expr::Literal(lit), syntax_ptr)
|
||||
}
|
||||
ast::Expr::IndexExpr(e) => {
|
||||
let base = self.collect_expr_opt(e.base());
|
||||
let index = self.collect_expr_opt(e.index());
|
||||
self.alloc_expr(Expr::Index { base, index }, syntax_ptr)
|
||||
}
|
||||
|
||||
// FIXME implement HIR for these:
|
||||
ast::Expr::Label(_e) => self.alloc_expr(Expr::Missing, syntax_ptr),
|
||||
ast::Expr::RangeExpr(_e) => self.alloc_expr(Expr::Missing, syntax_ptr),
|
||||
ast::Expr::MacroCall(e) => {
|
||||
let ast_id = self
|
||||
.db
|
||||
.ast_id_map(self.current_file_id)
|
||||
.ast_id(&e)
|
||||
.with_file_id(self.current_file_id);
|
||||
|
||||
if let Some(path) = e.path().and_then(Path::from_ast) {
|
||||
if let Some(def) = self.resolver.resolve_path_as_macro(self.db, &path) {
|
||||
let call_id = MacroCallLoc { def: def.id, ast_id }.id(self.db);
|
||||
let file_id = call_id.as_file(MacroFileKind::Expr);
|
||||
if let Some(node) = self.db.parse_or_expand(file_id) {
|
||||
if let Some(expr) = ast::Expr::cast(node) {
|
||||
log::debug!("macro expansion {:#?}", expr.syntax());
|
||||
let old_file_id =
|
||||
std::mem::replace(&mut self.current_file_id, file_id);
|
||||
let id = self.collect_expr(expr);
|
||||
self.current_file_id = old_file_id;
|
||||
return id;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
// FIXME: Instead of just dropping the error from expansion
|
||||
// report it
|
||||
self.alloc_expr(Expr::Missing, syntax_ptr)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn collect_expr_opt(&mut self, expr: Option<ast::Expr>) -> ExprId {
|
||||
if let Some(expr) = expr {
|
||||
self.collect_expr(expr)
|
||||
} else {
|
||||
self.exprs.alloc(Expr::Missing)
|
||||
}
|
||||
}
|
||||
|
||||
fn collect_block(&mut self, expr: ast::BlockExpr) -> ExprId {
|
||||
let syntax_node_ptr = AstPtr::new(&expr.clone().into());
|
||||
let block = match expr.block() {
|
||||
Some(block) => block,
|
||||
None => return self.alloc_expr(Expr::Missing, syntax_node_ptr),
|
||||
};
|
||||
let statements = block
|
||||
.statements()
|
||||
.map(|s| match s {
|
||||
ast::Stmt::LetStmt(stmt) => {
|
||||
let pat = self.collect_pat_opt(stmt.pat());
|
||||
let type_ref = stmt.ascribed_type().map(TypeRef::from_ast);
|
||||
let initializer = stmt.initializer().map(|e| self.collect_expr(e));
|
||||
Statement::Let { pat, type_ref, initializer }
|
||||
}
|
||||
ast::Stmt::ExprStmt(stmt) => Statement::Expr(self.collect_expr_opt(stmt.expr())),
|
||||
})
|
||||
.collect();
|
||||
let tail = block.expr().map(|e| self.collect_expr(e));
|
||||
self.alloc_expr(Expr::Block { statements, tail }, syntax_node_ptr)
|
||||
}
|
||||
|
||||
fn collect_block_opt(&mut self, expr: Option<ast::BlockExpr>) -> ExprId {
|
||||
if let Some(block) = expr {
|
||||
self.collect_block(block)
|
||||
} else {
|
||||
self.exprs.alloc(Expr::Missing)
|
||||
}
|
||||
}
|
||||
|
||||
fn collect_pat(&mut self, pat: ast::Pat) -> PatId {
|
||||
let pattern = match &pat {
|
||||
ast::Pat::BindPat(bp) => {
|
||||
let name = bp.name().map(|nr| nr.as_name()).unwrap_or_else(Name::missing);
|
||||
let annotation = BindingAnnotation::new(bp.is_mutable(), bp.is_ref());
|
||||
let subpat = bp.pat().map(|subpat| self.collect_pat(subpat));
|
||||
Pat::Bind { name, mode: annotation, subpat }
|
||||
}
|
||||
ast::Pat::TupleStructPat(p) => {
|
||||
let path = p.path().and_then(Path::from_ast);
|
||||
let args = p.args().map(|p| self.collect_pat(p)).collect();
|
||||
Pat::TupleStruct { path, args }
|
||||
}
|
||||
ast::Pat::RefPat(p) => {
|
||||
let pat = self.collect_pat_opt(p.pat());
|
||||
let mutability = Mutability::from_mutable(p.is_mut());
|
||||
Pat::Ref { pat, mutability }
|
||||
}
|
||||
ast::Pat::PathPat(p) => {
|
||||
let path = p.path().and_then(Path::from_ast);
|
||||
path.map(Pat::Path).unwrap_or(Pat::Missing)
|
||||
}
|
||||
ast::Pat::TuplePat(p) => {
|
||||
let args = p.args().map(|p| self.collect_pat(p)).collect();
|
||||
Pat::Tuple(args)
|
||||
}
|
||||
ast::Pat::PlaceholderPat(_) => Pat::Wild,
|
||||
ast::Pat::RecordPat(p) => {
|
||||
let path = p.path().and_then(Path::from_ast);
|
||||
let record_field_pat_list =
|
||||
p.record_field_pat_list().expect("every struct should have a field list");
|
||||
let mut fields: Vec<_> = record_field_pat_list
|
||||
.bind_pats()
|
||||
.filter_map(|bind_pat| {
|
||||
let ast_pat =
|
||||
ast::Pat::cast(bind_pat.syntax().clone()).expect("bind pat is a pat");
|
||||
let pat = self.collect_pat(ast_pat);
|
||||
let name = bind_pat.name()?.as_name();
|
||||
Some(RecordFieldPat { name, pat })
|
||||
})
|
||||
.collect();
|
||||
let iter = record_field_pat_list.record_field_pats().filter_map(|f| {
|
||||
let ast_pat = f.pat()?;
|
||||
let pat = self.collect_pat(ast_pat);
|
||||
let name = f.name()?.as_name();
|
||||
Some(RecordFieldPat { name, pat })
|
||||
});
|
||||
fields.extend(iter);
|
||||
|
||||
Pat::Struct { path, args: fields }
|
||||
}
|
||||
|
||||
// FIXME: implement
|
||||
ast::Pat::BoxPat(_) => Pat::Missing,
|
||||
ast::Pat::LiteralPat(_) => Pat::Missing,
|
||||
ast::Pat::SlicePat(_) | ast::Pat::RangePat(_) => Pat::Missing,
|
||||
};
|
||||
let ptr = AstPtr::new(&pat);
|
||||
self.alloc_pat(pattern, Either::A(ptr))
|
||||
}
|
||||
|
||||
fn collect_pat_opt(&mut self, pat: Option<ast::Pat>) -> PatId {
|
||||
if let Some(pat) = pat {
|
||||
self.collect_pat(pat)
|
||||
} else {
|
||||
self.pats.alloc(Pat::Missing)
|
||||
}
|
||||
}
|
||||
|
||||
fn collect_const_body(&mut self, node: ast::ConstDef) {
|
||||
let body = self.collect_expr_opt(node.body());
|
||||
self.body_expr = Some(body);
|
||||
}
|
||||
|
||||
fn collect_static_body(&mut self, node: ast::StaticDef) {
|
||||
let body = self.collect_expr_opt(node.body());
|
||||
self.body_expr = Some(body);
|
||||
}
|
||||
|
||||
fn collect_fn_body(&mut self, node: ast::FnDef) {
|
||||
if let Some(param_list) = node.param_list() {
|
||||
if let Some(self_param) = param_list.self_param() {
|
||||
let ptr = AstPtr::new(&self_param);
|
||||
let param_pat = self.alloc_pat(
|
||||
Pat::Bind {
|
||||
name: SELF_PARAM,
|
||||
mode: BindingAnnotation::Unannotated,
|
||||
subpat: None,
|
||||
},
|
||||
Either::B(ptr),
|
||||
);
|
||||
self.params.push(param_pat);
|
||||
}
|
||||
|
||||
for param in param_list.params() {
|
||||
let pat = if let Some(pat) = param.pat() {
|
||||
pat
|
||||
} else {
|
||||
continue;
|
||||
};
|
||||
let param_pat = self.collect_pat(pat);
|
||||
self.params.push(param_pat);
|
||||
}
|
||||
};
|
||||
|
||||
let body = self.collect_block_opt(node.body());
|
||||
self.body_expr = Some(body);
|
||||
}
|
||||
|
||||
fn finish(self) -> (Body, BodySourceMap) {
|
||||
let body = Body {
|
||||
owner: self.owner,
|
||||
exprs: self.exprs,
|
||||
pats: self.pats,
|
||||
params: self.params,
|
||||
body_expr: self.body_expr.expect("A body should have been collected"),
|
||||
};
|
||||
(body, self.source_map)
|
||||
}
|
||||
}
|
||||
|
||||
impl From<ast::BinOp> for BinaryOp {
|
||||
fn from(ast_op: ast::BinOp) -> Self {
|
||||
match ast_op {
|
||||
ast::BinOp::BooleanOr => BinaryOp::LogicOp(LogicOp::Or),
|
||||
ast::BinOp::BooleanAnd => BinaryOp::LogicOp(LogicOp::And),
|
||||
ast::BinOp::EqualityTest => BinaryOp::CmpOp(CmpOp::Eq { negated: false }),
|
||||
ast::BinOp::NegatedEqualityTest => BinaryOp::CmpOp(CmpOp::Eq { negated: true }),
|
||||
ast::BinOp::LesserEqualTest => {
|
||||
BinaryOp::CmpOp(CmpOp::Ord { ordering: Ordering::Less, strict: false })
|
||||
}
|
||||
ast::BinOp::GreaterEqualTest => {
|
||||
BinaryOp::CmpOp(CmpOp::Ord { ordering: Ordering::Greater, strict: false })
|
||||
}
|
||||
ast::BinOp::LesserTest => {
|
||||
BinaryOp::CmpOp(CmpOp::Ord { ordering: Ordering::Less, strict: true })
|
||||
}
|
||||
ast::BinOp::GreaterTest => {
|
||||
BinaryOp::CmpOp(CmpOp::Ord { ordering: Ordering::Greater, strict: true })
|
||||
}
|
||||
ast::BinOp::Addition => BinaryOp::ArithOp(ArithOp::Add),
|
||||
ast::BinOp::Multiplication => BinaryOp::ArithOp(ArithOp::Mul),
|
||||
ast::BinOp::Subtraction => BinaryOp::ArithOp(ArithOp::Sub),
|
||||
ast::BinOp::Division => BinaryOp::ArithOp(ArithOp::Div),
|
||||
ast::BinOp::Remainder => BinaryOp::ArithOp(ArithOp::Rem),
|
||||
ast::BinOp::LeftShift => BinaryOp::ArithOp(ArithOp::Shl),
|
||||
ast::BinOp::RightShift => BinaryOp::ArithOp(ArithOp::Shr),
|
||||
ast::BinOp::BitwiseXor => BinaryOp::ArithOp(ArithOp::BitXor),
|
||||
ast::BinOp::BitwiseOr => BinaryOp::ArithOp(ArithOp::BitOr),
|
||||
ast::BinOp::BitwiseAnd => BinaryOp::ArithOp(ArithOp::BitAnd),
|
||||
ast::BinOp::Assignment => BinaryOp::Assignment { op: None },
|
||||
ast::BinOp::AddAssign => BinaryOp::Assignment { op: Some(ArithOp::Add) },
|
||||
ast::BinOp::DivAssign => BinaryOp::Assignment { op: Some(ArithOp::Div) },
|
||||
ast::BinOp::MulAssign => BinaryOp::Assignment { op: Some(ArithOp::Mul) },
|
||||
ast::BinOp::RemAssign => BinaryOp::Assignment { op: Some(ArithOp::Rem) },
|
||||
ast::BinOp::ShlAssign => BinaryOp::Assignment { op: Some(ArithOp::Shl) },
|
||||
ast::BinOp::ShrAssign => BinaryOp::Assignment { op: Some(ArithOp::Shr) },
|
||||
ast::BinOp::SubAssign => BinaryOp::Assignment { op: Some(ArithOp::Sub) },
|
||||
ast::BinOp::BitOrAssign => BinaryOp::Assignment { op: Some(ArithOp::BitOr) },
|
||||
ast::BinOp::BitAndAssign => BinaryOp::Assignment { op: Some(ArithOp::BitAnd) },
|
||||
ast::BinOp::BitXorAssign => BinaryOp::Assignment { op: Some(ArithOp::BitXor) },
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
pub(crate) fn body_with_source_map_query(
|
||||
db: &impl HirDatabase,
|
||||
def: DefWithBody,
|
||||
) -> (Arc<Body>, Arc<BodySourceMap>) {
|
||||
let mut collector;
|
||||
|
||||
match def {
|
||||
DefWithBody::Const(ref c) => {
|
||||
let src = c.source(db);
|
||||
collector = ExprCollector::new(def, src.file_id, def.resolver(db), db);
|
||||
collector.collect_const_body(src.ast)
|
||||
}
|
||||
DefWithBody::Function(ref f) => {
|
||||
let src = f.source(db);
|
||||
collector = ExprCollector::new(def, src.file_id, def.resolver(db), db);
|
||||
collector.collect_fn_body(src.ast)
|
||||
}
|
||||
DefWithBody::Static(ref s) => {
|
||||
let src = s.source(db);
|
||||
collector = ExprCollector::new(def, src.file_id, def.resolver(db), db);
|
||||
collector.collect_static_body(src.ast)
|
||||
}
|
||||
}
|
||||
|
||||
let (body, source_map) = collector.finish();
|
||||
(Arc::new(body), Arc::new(source_map))
|
||||
}
|
||||
|
||||
pub(crate) fn body_hir_query(db: &impl HirDatabase, def: DefWithBody) -> Arc<Body> {
|
||||
db.body_with_source_map(def).0
|
||||
}
|
||||
Loading…
Reference in a new issue