bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/ide-completion/src/completions/extern_abi.rs')
-rw-r--r--crates/ide-completion/src/completions/extern_abi.rs104
1 files changed, 104 insertions, 0 deletions
diff --git a/crates/ide-completion/src/completions/extern_abi.rs b/crates/ide-completion/src/completions/extern_abi.rs
new file mode 100644
index 0000000000..87fccec008
--- /dev/null
+++ b/crates/ide-completion/src/completions/extern_abi.rs
@@ -0,0 +1,104 @@
+//! Completes function abi strings.
+use syntax::{
+ ast::{self, IsString},
+ AstNode, AstToken,
+};
+
+use crate::{
+ completions::Completions, context::CompletionContext, CompletionItem, CompletionItemKind,
+};
+
+// Most of these are feature gated, we should filter/add feature gate completions once we have them.
+const SUPPORTED_CALLING_CONVENTIONS: &[&str] = &[
+ "Rust",
+ "C",
+ "C-unwind",
+ "cdecl",
+ "stdcall",
+ "stdcall-unwind",
+ "fastcall",
+ "vectorcall",
+ "thiscall",
+ "thiscall-unwind",
+ "aapcs",
+ "win64",
+ "sysv64",
+ "ptx-kernel",
+ "msp430-interrupt",
+ "x86-interrupt",
+ "amdgpu-kernel",
+ "efiapi",
+ "avr-interrupt",
+ "avr-non-blocking-interrupt",
+ "C-cmse-nonsecure-call",
+ "wasm",
+ "system",
+ "system-unwind",
+ "rust-intrinsic",
+ "rust-call",
+ "platform-intrinsic",
+ "unadjusted",
+];
+
+pub(crate) fn complete_extern_abi(acc: &mut Completions, ctx: &CompletionContext) -> Option<()> {
+ if ctx.token.parent().and_then(ast::Abi::cast).is_none() {
+ return None;
+ }
+ let abi_str = ast::String::cast(ctx.token.clone())?;
+ let source_range = abi_str.text_range_between_quotes()?;
+ for &abi in SUPPORTED_CALLING_CONVENTIONS {
+ CompletionItem::new(CompletionItemKind::Keyword, source_range, abi).add_to(acc);
+ }
+ Some(())
+}
+
+#[cfg(test)]
+mod tests {
+ use expect_test::{expect, Expect};
+
+ use crate::tests::{check_edit, completion_list_no_kw};
+
+ fn check(ra_fixture: &str, expect: Expect) {
+ let actual = completion_list_no_kw(ra_fixture);
+ expect.assert_eq(&actual);
+ }
+
+ #[test]
+ fn only_completes_in_string_literals() {
+ check(
+ r#"
+$0 fn foo {}
+"#,
+ expect![[]],
+ );
+ }
+
+ #[test]
+ fn requires_extern_prefix() {
+ check(
+ r#"
+"$0" fn foo {}
+"#,
+ expect![[]],
+ );
+ }
+
+ #[test]
+ fn works() {
+ check(
+ r#"
+extern "$0" fn foo {}
+"#,
+ expect![[]],
+ );
+ check_edit(
+ "Rust",
+ r#"
+extern "$0" fn foo {}
+"#,
+ r#"
+extern "Rust" fn foo {}
+"#,
+ );
+ }
+}