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Add basic custom derive lowering

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This commit is contained in:
Edwin Cheng 2020-03-18 17:47:59 +08:00
parent e2dd17f75b
commit 34dc8d25c1
11 changed files with 152 additions and 28 deletions
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22
crates/ra_hir_expand/src/builtin_derive.rs
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@ -229,9 +229,12 @@ fn partial_ord_expand(
mod tests {
use super::*;
use crate::{test_db::TestDB, AstId, MacroCallId, MacroCallKind, MacroCallLoc};
use name::Name;
use ra_db::{fixture::WithFixture, SourceDatabase};
fn expand_builtin_derive(s: &str, expander: BuiltinDeriveExpander) -> String {
fn expand_builtin_derive(s: &str, name: Name) -> String {
let def = find_builtin_derive(&name).unwrap();
let (db, file_id) = TestDB::with_single_file(&s);
let parsed = db.parse(file_id);
let items: Vec<_> =
@ -239,14 +242,9 @@ mod tests {
let ast_id_map = db.ast_id_map(file_id.into());
// the first one should be a macro_rules
let def =
MacroDefId { krate: None, ast_id: None, kind: MacroDefKind::BuiltInDerive(expander) };
let attr_id = AstId::new(file_id.into(), ast_id_map.ast_id(&items[0]));
let loc = MacroCallLoc {
def,
kind: MacroCallKind::Attr(AstId::new(file_id.into(), ast_id_map.ast_id(&items[0]))),
};
let loc = MacroCallLoc { def, kind: MacroCallKind::Attr(attr_id, name.to_string()) };
let id: MacroCallId = db.intern_macro(loc).into();
let parsed = db.parse_or_expand(id.as_file()).unwrap();
@ -263,7 +261,7 @@ mod tests {
#[derive(Copy)]
struct Foo;
"#,
BuiltinDeriveExpander::Copy,
name::known::Copy,
);
assert_eq!(expanded, "impl< >std::marker::CopyforFoo< >{}");
@ -276,7 +274,7 @@ mod tests {
#[derive(Copy)]
struct Foo<A, B>;
"#,
BuiltinDeriveExpander::Copy,
name::known::Copy,
);
assert_eq!(
@ -292,7 +290,7 @@ mod tests {
#[derive(Copy)]
struct Foo<A, B, 'a, 'b>;
"#,
BuiltinDeriveExpander::Copy,
name::known::Copy,
);
// We currently just ignore lifetimes
@ -310,7 +308,7 @@ mod tests {
#[derive(Clone)]
struct Foo<A, B>;
"#,
BuiltinDeriveExpander::Clone,
name::known::Clone,
);
assert_eq!(