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Add expansion infrastructure for derive macros

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This commit is contained in:
Florian Diebold 2019-12-05 15:10:33 +01:00
parent 4c0bd068da
commit 18f6a995d0
18 changed files with 319 additions and 79 deletions
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5
crates/ra_hir/src/code_model/src.rs
View file

@ -105,7 +105,10 @@ impl HasSource for TypeAlias {
impl HasSource for MacroDef {
type Ast = ast::MacroCall;
fn source(self, db: &impl DefDatabase) -> InFile<ast::MacroCall> {
InFile { file_id: self.id.ast_id.file_id, value: self.id.ast_id.to_node(db) }
InFile {
file_id: self.id.ast_id.expect("MacroDef without ast_id").file_id,
value: self.id.ast_id.expect("MacroDef without ast_id").to_node(db),
}
}
}
impl HasSource for ImplBlock {

4
crates/ra_hir/src/from_source.rs
View file

@ -152,9 +152,9 @@ impl FromSource for MacroDef {
let module_src = ModuleSource::from_child_node(db, src.as_ref().map(|it| it.syntax()));
let module = Module::from_definition(db, InFile::new(src.file_id, module_src))?;
let krate = module.krate().crate_id();
let krate = Some(module.krate().crate_id());
let ast_id = AstId::new(src.file_id, db.ast_id_map(src.file_id).ast_id(&src.value));
let ast_id = Some(AstId::new(src.file_id, db.ast_id_map(src.file_id).ast_id(&src.value)));
let id: MacroDefId = MacroDefId { krate, ast_id, kind };
Some(MacroDef { id })

5
crates/ra_hir/src/source_binder.rs
View file

@ -20,7 +20,8 @@ use hir_def::{
AssocItemId, DefWithBodyId,
};
use hir_expand::{
hygiene::Hygiene, name::AsName, AstId, HirFileId, InFile, MacroCallId, MacroFileKind,
hygiene::Hygiene, name::AsName, AstId, HirFileId, InFile, MacroCallId, MacroCallKind,
MacroFileKind,
};
use ra_syntax::{
ast::{self, AstNode},
@ -456,7 +457,7 @@ impl SourceAnalyzer {
db.ast_id_map(macro_call.file_id).ast_id(macro_call.value),
);
Some(Expansion {
macro_call_id: def.as_call_id(db, ast_id),
macro_call_id: def.as_call_id(db, MacroCallKind::FnLike(ast_id)),
macro_file_kind: to_macro_file_kind(macro_call.value),
})
}

4
crates/ra_hir_def/src/attr.rs
View file

@ -61,7 +61,9 @@ impl Attrs {
AdtId::UnionId(it) => attrs_from_ast(it.lookup_intern(db).ast_id, db),
},
AttrDefId::TraitId(it) => attrs_from_ast(it.lookup_intern(db).ast_id, db),
AttrDefId::MacroDefId(it) => attrs_from_ast(it.ast_id, db),
AttrDefId::MacroDefId(it) => {
it.ast_id.map_or_else(Default::default, |ast_id| attrs_from_ast(ast_id, db))
}
AttrDefId::ImplId(it) => attrs_from_ast(it.lookup_intern(db).ast_id, db),
AttrDefId::ConstId(it) => attrs_from_loc(it.lookup(db), db),
AttrDefId::StaticId(it) => attrs_from_loc(it.lookup(db), db),

6
crates/ra_hir_def/src/body.rs
View file

@ -6,7 +6,9 @@ pub mod scope;
use std::{ops::Index, sync::Arc};
use either::Either;
use hir_expand::{hygiene::Hygiene, AstId, HirFileId, InFile, MacroDefId, MacroFileKind};
use hir_expand::{
hygiene::Hygiene, AstId, HirFileId, InFile, MacroCallKind, MacroDefId, MacroFileKind,
};
use ra_arena::{map::ArenaMap, Arena};
use ra_syntax::{ast, AstNode, AstPtr};
use rustc_hash::FxHashMap;
@ -46,7 +48,7 @@ impl Expander {
if let Some(path) = macro_call.path().and_then(|path| self.parse_path(path)) {
if let Some(def) = self.resolve_path_as_macro(db, &path) {
let call_id = def.as_call_id(db, ast_id);
let call_id = def.as_call_id(db, MacroCallKind::FnLike(ast_id));
let file_id = call_id.as_file(MacroFileKind::Expr);
if let Some(node) = db.parse_or_expand(file_id) {
if let Some(expr) = ast::Expr::cast(node) {

2
crates/ra_hir_def/src/docs.rs
View file

@ -60,7 +60,7 @@ impl Documentation {
docs_from_ast(&src.value[it.local_id])
}
AttrDefId::TraitId(it) => docs_from_ast(&it.source(db).value),
AttrDefId::MacroDefId(it) => docs_from_ast(&it.ast_id.to_node(db)),
AttrDefId::MacroDefId(it) => docs_from_ast(&it.ast_id?.to_node(db)),
AttrDefId::ConstId(it) => docs_from_ast(&it.lookup(db).source(db).value),
AttrDefId::StaticId(it) => docs_from_ast(&it.lookup(db).source(db).value),
AttrDefId::FunctionId(it) => docs_from_ast(&it.lookup(db).source(db).value),

73
crates/ra_hir_def/src/nameres/collector.rs
View file

@ -4,9 +4,10 @@
//! resolves imports and expands macros.
use hir_expand::{
builtin_derive::find_builtin_derive,
builtin_macro::find_builtin_macro,
name::{self, AsName, Name},
HirFileId, MacroCallId, MacroDefId, MacroDefKind, MacroFileKind,
HirFileId, MacroCallId, MacroCallKind, MacroDefId, MacroDefKind, MacroFileKind,
};
use ra_cfg::CfgOptions;
use ra_db::{CrateId, FileId};
@ -58,6 +59,7 @@ pub(super) fn collect_defs(db: &impl DefDatabase, mut def_map: CrateDefMap) -> C
glob_imports: FxHashMap::default(),
unresolved_imports: Vec::new(),
unexpanded_macros: Vec::new(),
unexpanded_attribute_macros: Vec::new(),
mod_dirs: FxHashMap::default(),
macro_stack_monitor: MacroStackMonitor::default(),
poison_macros: FxHashSet::default(),
@ -102,6 +104,7 @@ struct DefCollector<'a, DB> {
glob_imports: FxHashMap<LocalModuleId, Vec<(LocalModuleId, LocalImportId)>>,
unresolved_imports: Vec<(LocalModuleId, LocalImportId, raw::ImportData)>,
unexpanded_macros: Vec<(LocalModuleId, AstId<ast::MacroCall>, Path)>,
unexpanded_attribute_macros: Vec<(LocalModuleId, AstId<ast::ModuleItem>, Path)>,
mod_dirs: FxHashMap<LocalModuleId, ModDir>,
/// Some macro use `$tt:tt which mean we have to handle the macro perfectly
@ -470,6 +473,8 @@ where
fn resolve_macros(&mut self) -> ReachedFixedPoint {
let mut macros = std::mem::replace(&mut self.unexpanded_macros, Vec::new());
let mut attribute_macros =
std::mem::replace(&mut self.unexpanded_attribute_macros, Vec::new());
let mut resolved = Vec::new();
let mut res = ReachedFixedPoint::Yes;
macros.retain(|(module_id, ast_id, path)| {
@ -482,7 +487,19 @@ where
);
if let Some(def) = resolved_res.resolved_def.take_macros() {
let call_id = def.as_call_id(self.db, *ast_id);
let call_id = def.as_call_id(self.db, MacroCallKind::FnLike(*ast_id));
resolved.push((*module_id, call_id, def));
res = ReachedFixedPoint::No;
return false;
}
true
});
attribute_macros.retain(|(module_id, ast_id, path)| {
let resolved_res = self.resolve_attribute_macro(path);
if let Some(def) = resolved_res {
let call_id = def.as_call_id(self.db, MacroCallKind::Attr(*ast_id));
resolved.push((*module_id, call_id, def));
res = ReachedFixedPoint::No;
return false;
@ -492,6 +509,7 @@ where
});
self.unexpanded_macros = macros;
self.unexpanded_attribute_macros = attribute_macros;
for (module_id, macro_call_id, macro_def_id) in resolved {
self.collect_macro_expansion(module_id, macro_call_id, macro_def_id);
@ -500,6 +518,20 @@ where
res
}
fn resolve_attribute_macro(&self, path: &Path) -> Option<MacroDefId> {
// FIXME this is currently super hacky, just enough to support the
// built-in derives
if let Some(name) = path.as_ident() {
// FIXME this should actually be handled with the normal name
// resolution; the std lib defines built-in stubs for the derives,
// but these are new-style `macro`s, which we don't support yet
if let Some(def_id) = find_builtin_derive(name) {
return Some(def_id);
}
}
None
}
fn collect_macro_expansion(
&mut self,
module_id: LocalModuleId,
@ -587,7 +619,9 @@ where
.def_collector
.unresolved_imports
.push((self.module_id, import_id, self.raw_items[import_id].clone())),
raw::RawItemKind::Def(def) => self.define_def(&self.raw_items[def]),
raw::RawItemKind::Def(def) => {
self.define_def(&self.raw_items[def], &item.attrs)
}
raw::RawItemKind::Macro(mac) => self.collect_macro(&self.raw_items[mac]),
raw::RawItemKind::Impl(imp) => {
let module = ModuleId {
@ -682,10 +716,16 @@ where
res
}
fn define_def(&mut self, def: &raw::DefData) {
fn define_def(&mut self, def: &raw::DefData, attrs: &Attrs) {
let module = ModuleId { krate: self.def_collector.def_map.krate, local_id: self.module_id };
let ctx = LocationCtx::new(self.def_collector.db, module, self.file_id);
// FIXME: check attrs to see if this is an attribute macro invocation;
// in which case we don't add the invocation, just a single attribute
// macro invocation
self.collect_derives(attrs, def);
let name = def.name.clone();
let def: PerNs = match def.kind {
raw::DefKind::Function(ast_id) => {
@ -736,6 +776,23 @@ where
self.def_collector.update(self.module_id, None, &[(name, resolution)])
}
fn collect_derives(&mut self, attrs: &Attrs, def: &raw::DefData) {
for derive_subtree in attrs.by_key("derive").tt_values() {
// for #[derive(Copy, Clone)], `derive_subtree` is the `(Copy, Clone)` subtree
for tt in &derive_subtree.token_trees {
let ident = match &tt {
tt::TokenTree::Leaf(tt::Leaf::Ident(ident)) => ident,
tt::TokenTree::Leaf(tt::Leaf::Punct(_)) => continue, // , is ok
_ => continue, // anything else would be an error (which we currently ignore)
};
let path = Path::from_tt_ident(ident);
let ast_id = AstId::new(self.file_id, def.kind.ast_id());
self.def_collector.unexpanded_attribute_macros.push((self.module_id, ast_id, path));
}
}
}
fn collect_macro(&mut self, mac: &raw::MacroData) {
let ast_id = AstId::new(self.file_id, mac.ast_id);
@ -759,8 +816,8 @@ where
if is_macro_rules(&mac.path) {
if let Some(name) = &mac.name {
let macro_id = MacroDefId {
ast_id,
krate: self.def_collector.def_map.krate,
ast_id: Some(ast_id),
krate: Some(self.def_collector.def_map.krate),
kind: MacroDefKind::Declarative,
};
self.def_collector.define_macro(self.module_id, name.clone(), macro_id, mac.export);
@ -773,7 +830,8 @@ where
if let Some(macro_def) = mac.path.as_ident().and_then(|name| {
self.def_collector.def_map[self.module_id].scope.get_legacy_macro(&name)
}) {
let macro_call_id = macro_def.as_call_id(self.def_collector.db, ast_id);
let macro_call_id =
macro_def.as_call_id(self.def_collector.db, MacroCallKind::FnLike(ast_id));
self.def_collector.collect_macro_expansion(self.module_id, macro_call_id, macro_def);
return;
@ -829,6 +887,7 @@ mod tests {
glob_imports: FxHashMap::default(),
unresolved_imports: Vec::new(),
unexpanded_macros: Vec::new(),
unexpanded_attribute_macros: Vec::new(),
mod_dirs: FxHashMap::default(),
macro_stack_monitor: monitor,
poison_macros: FxHashSet::default(),

15
crates/ra_hir_def/src/nameres/raw.rs
View file

@ -184,6 +184,21 @@ pub(super) enum DefKind {
TypeAlias(FileAstId<ast::TypeAliasDef>),
}
impl DefKind {
pub fn ast_id(&self) -> FileAstId<ast::ModuleItem> {
match self {
DefKind::Function(it) => it.upcast(),
DefKind::Struct(it) => it.upcast(),
DefKind::Union(it) => it.upcast(),
DefKind::Enum(it) => it.upcast(),
DefKind::Const(it) => it.upcast(),
DefKind::Static(it) => it.upcast(),
DefKind::Trait(it) => it.upcast(),
DefKind::TypeAlias(it) => it.upcast(),
}
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub(super) struct Macro(RawId);
impl_arena_id!(Macro);

24
crates/ra_hir_def/src/nameres/tests/macros.rs
View file

@ -600,3 +600,27 @@ fn macro_dollar_crate_is_correct_in_indirect_deps() {
⋮bar: t v
"###);
}
#[test]
fn expand_derive() {
let map = compute_crate_def_map(
"
//- /main.rs
#[derive(Clone)]
struct Foo;
",
);
assert_eq!(map.modules[map.root].impls.len(), 1);
}
#[test]
fn expand_multiple_derive() {
let map = compute_crate_def_map(
"
//- /main.rs
#[derive(Copy, Clone)]
struct Foo;
",
);
assert_eq!(map.modules[map.root].impls.len(), 2);
}

5
crates/ra_hir_def/src/path.rs
View file

@ -199,6 +199,11 @@ impl Path {
name_ref.as_name().into()
}
/// Converts an `tt::Ident` into a single-identifier `Path`.
pub(crate) fn from_tt_ident(ident: &tt::Ident) -> Path {
ident.as_name().into()
}
/// `true` is this path is a single identifier, like `foo`
pub fn is_ident(&self) -> bool {
self.kind == PathKind::Plain && self.segments.len() == 1

12
crates/ra_hir_expand/src/ast_id_map.rs
View file

@ -39,6 +39,16 @@ impl<N: AstNode> Hash for FileAstId<N> {
}
}
impl<N: AstNode> FileAstId<N> {
// Can't make this a From implementation because of coherence
pub fn upcast<M: AstNode>(self) -> FileAstId<M>
where
M: From<N>,
{
FileAstId { raw: self.raw, _ty: PhantomData }
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
struct ErasedFileAstId(RawId);
impl_arena_id!(ErasedFileAstId);
@ -53,7 +63,7 @@ impl AstIdMap {
pub(crate) fn from_source(node: &SyntaxNode) -> AstIdMap {
assert!(node.parent().is_none());
let mut res = AstIdMap { arena: Arena::default() };
// By walking the tree in bread-first order we make sure that parents
// By walking the tree in breadth-first order we make sure that parents
// get lower ids then children. That is, adding a new child does not
// change parent's id. This means that, say, adding a new function to a
// trait does not change ids of top-level items, which helps caching.

64
crates/ra_hir_expand/src/builtin_derive.rs Normal file
View file

@ -0,0 +1,64 @@
//! Builtin derives.
use crate::db::AstDatabase;
use crate::{name, MacroCallId, MacroDefId, MacroDefKind};
use crate::quote;
macro_rules! register_builtin {
( $(($name:ident, $kind: ident) => $expand:ident),* ) => {
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub enum BuiltinDeriveExpander {
$($kind),*
}
impl BuiltinDeriveExpander {
pub fn expand(
&self,
db: &dyn AstDatabase,
id: MacroCallId,
tt: &tt::Subtree,
) -> Result<tt::Subtree, mbe::ExpandError> {
let expander = match *self {
$( BuiltinDeriveExpander::$kind => $expand, )*
};
expander(db, id, tt)
}
}
pub fn find_builtin_derive(ident: &name::Name) -> Option<MacroDefId> {
let kind = match ident {
$( id if id == &name::$name => BuiltinDeriveExpander::$kind, )*
_ => return None,
};
Some(MacroDefId { krate: None, ast_id: None, kind: MacroDefKind::BuiltInDerive(kind) })
}
};
}
register_builtin! {
(COPY_TRAIT, Copy) => copy_expand,
(CLONE_TRAIT, Clone) => clone_expand
}
fn copy_expand(
_db: &dyn AstDatabase,
_id: MacroCallId,
_tt: &tt::Subtree,
) -> Result<tt::Subtree, mbe::ExpandError> {
let expanded = quote! {
impl Copy for Foo {}
};
Ok(expanded)
}
fn clone_expand(
_db: &dyn AstDatabase,
_id: MacroCallId,
_tt: &tt::Subtree,
) -> Result<tt::Subtree, mbe::ExpandError> {
let expanded = quote! {
impl Clone for Foo {}
};
Ok(expanded)
}

37
crates/ra_hir_expand/src/builtin_macro.rs
View file

@ -39,7 +39,7 @@ macro_rules! register_builtin {
_ => return None,
};
Some(MacroDefId { krate, ast_id, kind: MacroDefKind::BuiltIn(kind) })
Some(MacroDefId { krate: Some(krate), ast_id: Some(ast_id), kind: MacroDefKind::BuiltIn(kind) })
}
};
}
@ -82,10 +82,9 @@ fn line_expand(
_tt: &tt::Subtree,
) -> Result<tt::Subtree, mbe::ExpandError> {
let loc = db.lookup_intern_macro(id);
let macro_call = loc.ast_id.to_node(db);
let arg = macro_call.token_tree().ok_or_else(|| mbe::ExpandError::UnexpectedToken)?;
let arg_start = arg.syntax().text_range().start();
let arg = loc.kind.arg(db).ok_or_else(|| mbe::ExpandError::UnexpectedToken)?;
let arg_start = arg.text_range().start();
let file = id.as_file(MacroFileKind::Expr);
let line_num = to_line_number(db, file, arg_start);
@ -103,11 +102,10 @@ fn stringify_expand(
_tt: &tt::Subtree,
) -> Result<tt::Subtree, mbe::ExpandError> {
let loc = db.lookup_intern_macro(id);
let macro_call = loc.ast_id.to_node(db);
let macro_content = {
let arg = macro_call.token_tree().ok_or_else(|| mbe::ExpandError::UnexpectedToken)?;
let macro_args = arg.syntax().clone();
let arg = loc.kind.arg(db).ok_or_else(|| mbe::ExpandError::UnexpectedToken)?;
let macro_args = arg.clone();
let text = macro_args.text();
let without_parens = TextUnit::of_char('(')..text.len() - TextUnit::of_char(')');
text.slice(without_parens).to_string()
@ -148,7 +146,10 @@ fn column_expand(
_tt: &tt::Subtree,
) -> Result<tt::Subtree, mbe::ExpandError> {
let loc = db.lookup_intern_macro(id);
let macro_call = loc.ast_id.to_node(db);
let macro_call = match loc.kind {
crate::MacroCallKind::FnLike(ast_id) => ast_id.to_node(db),
_ => panic!("column macro called as attr"),
};
let _arg = macro_call.token_tree().ok_or_else(|| mbe::ExpandError::UnexpectedToken)?;
let col_start = macro_call.syntax().text_range().start();
@ -164,15 +165,10 @@ fn column_expand(
}
fn file_expand(
db: &dyn AstDatabase,
id: MacroCallId,
_db: &dyn AstDatabase,
_id: MacroCallId,
_tt: &tt::Subtree,
) -> Result<tt::Subtree, mbe::ExpandError> {
let loc = db.lookup_intern_macro(id);
let macro_call = loc.ast_id.to_node(db);
let _ = macro_call.token_tree().ok_or_else(|| mbe::ExpandError::UnexpectedToken)?;
// FIXME: RA purposefully lacks knowledge of absolute file names
// so just return "".
let file_name = "";
@ -207,7 +203,7 @@ fn compile_error_expand(
#[cfg(test)]
mod tests {
use super::*;
use crate::{test_db::TestDB, MacroCallLoc};
use crate::{test_db::TestDB, MacroCallKind, MacroCallLoc};
use ra_db::{fixture::WithFixture, SourceDatabase};
fn expand_builtin_macro(s: &str, expander: BuiltinFnLikeExpander) -> String {
@ -220,14 +216,17 @@ mod tests {
// the first one should be a macro_rules
let def = MacroDefId {
krate: CrateId(0),
ast_id: AstId::new(file_id.into(), ast_id_map.ast_id(&macro_calls[0])),
krate: Some(CrateId(0)),
ast_id: Some(AstId::new(file_id.into(), ast_id_map.ast_id(&macro_calls[0]))),
kind: MacroDefKind::BuiltIn(expander),
};
let loc = MacroCallLoc {
def,
ast_id: AstId::new(file_id.into(), ast_id_map.ast_id(&macro_calls[1])),
kind: MacroCallKind::FnLike(AstId::new(
file_id.into(),
ast_id_map.ast_id(&macro_calls[1]),
)),
};
let id = db.intern_macro(loc);

19
crates/ra_hir_expand/src/db.rs
View file

@ -9,14 +9,15 @@ use ra_prof::profile;
use ra_syntax::{AstNode, Parse, SyntaxNode};
use crate::{
ast_id_map::AstIdMap, BuiltinFnLikeExpander, HirFileId, HirFileIdRepr, MacroCallId,
MacroCallLoc, MacroDefId, MacroDefKind, MacroFile, MacroFileKind,
ast_id_map::AstIdMap, BuiltinDeriveExpander, BuiltinFnLikeExpander, HirFileId, HirFileIdRepr,
MacroCallId, MacroCallLoc, MacroDefId, MacroDefKind, MacroFile, MacroFileKind,
};
#[derive(Debug, Clone, Eq, PartialEq)]
pub enum TokenExpander {
MacroRules(mbe::MacroRules),
Builtin(BuiltinFnLikeExpander),
BuiltinDerive(BuiltinDeriveExpander),
}
impl TokenExpander {
@ -29,6 +30,7 @@ impl TokenExpander {
match self {
TokenExpander::MacroRules(it) => it.expand(tt),
TokenExpander::Builtin(it) => it.expand(db, id, tt),
TokenExpander::BuiltinDerive(it) => it.expand(db, id, tt),
}
}
@ -36,6 +38,7 @@ impl TokenExpander {
match self {
TokenExpander::MacroRules(it) => it.map_id_down(id),
TokenExpander::Builtin(..) => id,
TokenExpander::BuiltinDerive(..) => id,
}
}
@ -43,6 +46,7 @@ impl TokenExpander {
match self {
TokenExpander::MacroRules(it) => it.map_id_up(id),
TokenExpander::Builtin(..) => (id, mbe::Origin::Def),
TokenExpander::BuiltinDerive(..) => (id, mbe::Origin::Def),
}
}
}
@ -76,7 +80,7 @@ pub(crate) fn macro_def(
) -> Option<Arc<(TokenExpander, mbe::TokenMap)>> {
match id.kind {
MacroDefKind::Declarative => {
let macro_call = id.ast_id.to_node(db);
let macro_call = id.ast_id?.to_node(db);
let arg = macro_call.token_tree()?;
let (tt, tmap) = mbe::ast_to_token_tree(&arg).or_else(|| {
log::warn!("fail on macro_def to token tree: {:#?}", arg);
@ -91,6 +95,10 @@ pub(crate) fn macro_def(
MacroDefKind::BuiltIn(expander) => {
Some(Arc::new((TokenExpander::Builtin(expander.clone()), mbe::TokenMap::default())))
}
MacroDefKind::BuiltInDerive(expander) => Some(Arc::new((
TokenExpander::BuiltinDerive(expander.clone()),
mbe::TokenMap::default(),
))),
}
}
@ -99,9 +107,8 @@ pub(crate) fn macro_arg(
id: MacroCallId,
) -> Option<Arc<(tt::Subtree, mbe::TokenMap)>> {
let loc = db.lookup_intern_macro(id);
let macro_call = loc.ast_id.to_node(db);
let arg = macro_call.token_tree()?;
let (tt, tmap) = mbe::ast_to_token_tree(&arg)?;
let arg = loc.kind.arg(db)?;
let (tt, tmap) = mbe::syntax_node_to_token_tree(&arg)?;
Some(Arc::new((tt, tmap)))
}

3
crates/ra_hir_expand/src/hygiene.rs
View file

@ -25,8 +25,9 @@ impl Hygiene {
HirFileIdRepr::MacroFile(macro_file) => {
let loc = db.lookup_intern_macro(macro_file.macro_call_id);
match loc.def.kind {
MacroDefKind::Declarative => Some(loc.def.krate),
MacroDefKind::Declarative => loc.def.krate,
MacroDefKind::BuiltIn(_) => None,
MacroDefKind::BuiltInDerive(_) => None,
}
}
};

74
crates/ra_hir_expand/src/lib.rs
View file

@ -9,6 +9,7 @@ pub mod ast_id_map;
pub mod name;
pub mod hygiene;
pub mod diagnostics;
pub mod builtin_derive;
pub mod builtin_macro;
pub mod quote;
@ -23,6 +24,7 @@ use ra_syntax::{
};
use crate::ast_id_map::FileAstId;
use crate::builtin_derive::BuiltinDeriveExpander;
use crate::builtin_macro::BuiltinFnLikeExpander;
#[cfg(test)]
@ -69,7 +71,7 @@ impl HirFileId {
HirFileIdRepr::FileId(file_id) => file_id,
HirFileIdRepr::MacroFile(macro_file) => {
let loc = db.lookup_intern_macro(macro_file.macro_call_id);
loc.ast_id.file_id.original_file(db)
loc.kind.file_id().original_file(db)
}
}
}
@ -81,8 +83,8 @@ impl HirFileId {
HirFileIdRepr::MacroFile(macro_file) => {
let loc: MacroCallLoc = db.lookup_intern_macro(macro_file.macro_call_id);
let arg_tt = loc.ast_id.to_node(db).token_tree()?;
let def_tt = loc.def.ast_id.to_node(db).token_tree()?;
let arg_tt = loc.kind.arg(db)?;
let def_tt = loc.def.ast_id?.to_node(db).token_tree()?;
let macro_def = db.macro_def(loc.def)?;
let (parse, exp_map) = db.parse_macro(macro_file)?;
@ -90,8 +92,8 @@ impl HirFileId {
Some(ExpansionInfo {
expanded: InFile::new(self, parse.syntax_node()),
arg: InFile::new(loc.ast_id.file_id, arg_tt),
def: InFile::new(loc.ast_id.file_id, def_tt),
arg: InFile::new(loc.kind.file_id(), arg_tt),
def: InFile::new(loc.def.ast_id?.file_id, def_tt),
macro_arg,
macro_def,
exp_map,
@ -129,18 +131,20 @@ impl salsa::InternKey for MacroCallId {
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct MacroDefId {
pub krate: CrateId,
pub ast_id: AstId<ast::MacroCall>,
// FIXME: krate and ast_id are currently optional because we don't have a
// definition location for built-in derives. There is one, though: the
// standard library defines them. The problem is that it uses the new
// `macro` syntax for this, which we don't support yet. As soon as we do
// (which will probably require touching this code), we can instead use
// that (and also remove the hacks for resolving built-in derives).
pub krate: Option<CrateId>,
pub ast_id: Option<AstId<ast::MacroCall>>,
pub kind: MacroDefKind,
}
impl MacroDefId {
pub fn as_call_id(
self,
db: &dyn db::AstDatabase,
ast_id: AstId<ast::MacroCall>,
) -> MacroCallId {
db.intern_macro(MacroCallLoc { def: self, ast_id })
pub fn as_call_id(self, db: &dyn db::AstDatabase, kind: MacroCallKind) -> MacroCallId {
db.intern_macro(MacroCallLoc { def: self, kind })
}
}
@ -148,12 +152,38 @@ impl MacroDefId {
pub enum MacroDefKind {
Declarative,
BuiltIn(BuiltinFnLikeExpander),
// FIXME: maybe just Builtin and rename BuiltinFnLikeExpander to BuiltinExpander
BuiltInDerive(BuiltinDeriveExpander),
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct MacroCallLoc {
pub(crate) def: MacroDefId,
pub(crate) ast_id: AstId<ast::MacroCall>,
pub(crate) kind: MacroCallKind,
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub enum MacroCallKind {
FnLike(AstId<ast::MacroCall>),
Attr(AstId<ast::ModuleItem>),
}
impl MacroCallKind {
pub fn file_id(&self) -> HirFileId {
match self {
MacroCallKind::FnLike(ast_id) => ast_id.file_id,
MacroCallKind::Attr(ast_id) => ast_id.file_id,
}
}
pub fn arg(&self, db: &dyn db::AstDatabase) -> Option<SyntaxNode> {
match self {
MacroCallKind::FnLike(ast_id) => {
Some(ast_id.to_node(db).token_tree()?.syntax().clone())
}
MacroCallKind::Attr(ast_id) => Some(ast_id.to_node(db).syntax().clone()),
}
}
}
impl MacroCallId {
@ -167,7 +197,7 @@ impl MacroCallId {
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct ExpansionInfo {
expanded: InFile<SyntaxNode>,
arg: InFile<ast::TokenTree>,
arg: InFile<SyntaxNode>,
def: InFile<ast::TokenTree>,
macro_def: Arc<(db::TokenExpander, mbe::TokenMap)>,
@ -178,8 +208,7 @@ pub struct ExpansionInfo {
impl ExpansionInfo {
pub fn map_token_down(&self, token: InFile<&SyntaxToken>) -> Option<InFile<SyntaxToken>> {
assert_eq!(token.file_id, self.arg.file_id);
let range =
token.value.text_range().checked_sub(self.arg.value.syntax().text_range().start())?;
let range = token.value.text_range().checked_sub(self.arg.value.text_range().start())?;
let token_id = self.macro_arg.1.token_by_range(range)?;
let token_id = self.macro_def.0.map_id_down(token_id);
@ -195,15 +224,14 @@ impl ExpansionInfo {
let (token_id, origin) = self.macro_def.0.map_id_up(token_id);
let (token_map, tt) = match origin {
mbe::Origin::Call => (&self.macro_arg.1, &self.arg),
mbe::Origin::Def => (&self.macro_def.1, &self.def),
mbe::Origin::Call => (&self.macro_arg.1, self.arg.clone()),
mbe::Origin::Def => {
(&self.macro_def.1, self.def.as_ref().map(|tt| tt.syntax().clone()))
}
};
let range = token_map.range_by_token(token_id)?;
let token = algo::find_covering_element(
tt.value.syntax(),
range + tt.value.syntax().text_range().start(),
)
let token = algo::find_covering_element(&tt.value, range + tt.value.text_range().start())
.into_token()?;
Some(tt.with_value(token))
}

10
crates/ra_hir_expand/src/name.rs
View file

@ -83,6 +83,12 @@ impl AsName for ast::Name {
}
}
impl AsName for tt::Ident {
fn as_name(&self) -> Name {
Name::resolve(&self.text)
}
}
impl AsName for ast::FieldKind {
fn as_name(&self) -> Name {
match self {
@ -153,3 +159,7 @@ pub const COLUMN_MACRO: Name = Name::new_inline_ascii(6, b"column");
pub const COMPILE_ERROR_MACRO: Name = Name::new_inline_ascii(13, b"compile_error");
pub const LINE_MACRO: Name = Name::new_inline_ascii(4, b"line");
pub const STRINGIFY_MACRO: Name = Name::new_inline_ascii(9, b"stringify");
// Builtin derives
pub const COPY_TRAIT: Name = Name::new_inline_ascii(4, b"Copy");
pub const CLONE_TRAIT: Name = Name::new_inline_ascii(5, b"Clone");

32
crates/ra_mbe/src/syntax_bridge.rs
View file

@ -2,7 +2,7 @@
use ra_parser::{FragmentKind, ParseError, TreeSink};
use ra_syntax::{
ast, AstNode, AstToken, NodeOrToken, Parse, SmolStr, SyntaxKind, SyntaxKind::*, SyntaxNode,
ast, AstToken, NodeOrToken, Parse, SmolStr, SyntaxKind, SyntaxKind::*, SyntaxNode,
SyntaxTreeBuilder, TextRange, TextUnit, T,
};
use std::iter::successors;
@ -20,7 +20,7 @@ pub struct TokenMap {
/// Convert the syntax tree (what user has written) to a `TokenTree` (what macro
/// will consume).
pub fn ast_to_token_tree(ast: &ast::TokenTree) -> Option<(tt::Subtree, TokenMap)> {
pub fn ast_to_token_tree(ast: &impl ast::AstNode) -> Option<(tt::Subtree, TokenMap)> {
syntax_node_to_token_tree(ast.syntax())
}
@ -208,13 +208,8 @@ impl Convertor {
} else if token.kind().is_trivia() {
continue;
} else if token.kind().is_punct() {
assert!(
token.text().len() == 1,
"Input ast::token punct must be single char."
);
let char = token.text().chars().next().unwrap();
let spacing = match child_iter.peek() {
// we need to pull apart joined punctuation tokens
let last_spacing = match child_iter.peek() {
Some(NodeOrToken::Token(token)) => {
if token.kind().is_punct() {
tt::Spacing::Joint
@ -224,8 +219,12 @@ impl Convertor {
}
_ => tt::Spacing::Alone,
};
let spacing_iter = std::iter::repeat(tt::Spacing::Joint)
.take(token.text().len() - 1)
.chain(std::iter::once(last_spacing));
for (char, spacing) in token.text().chars().zip(spacing_iter) {
token_trees.push(tt::Leaf::from(tt::Punct { char, spacing }).into());
}
} else {
let child: tt::TokenTree =
if token.kind() == T![true] || token.kind() == T![false] {
@ -389,7 +388,10 @@ mod tests {
use super::*;
use crate::tests::{create_rules, expand};
use ra_parser::TokenSource;
use ra_syntax::algo::{insert_children, InsertPosition};
use ra_syntax::{
algo::{insert_children, InsertPosition},
ast::AstNode,
};
#[test]
fn convert_tt_token_source() {
@ -491,4 +493,12 @@ mod tests {
assert_eq!(tt.delimiter, tt::Delimiter::Brace);
}
#[test]
fn test_token_tree_multi_char_punct() {
let source_file = ast::SourceFile::parse("struct Foo { a: x::Y }").ok().unwrap();
let struct_def = source_file.syntax().descendants().find_map(ast::StructDef::cast).unwrap();
let tt = ast_to_token_tree(&struct_def).unwrap().0;
token_tree_to_syntax_node(&tt, FragmentKind::Item).unwrap();
}
}