carbon-language/carbon-lang
1
0
Fork 0
mirror of https://github.com/carbon-language/carbon-lang.git synced 2026-10-05 21:31:24 +01:00
Code Issues Packages Projects Releases 10 Wiki Activity

Create modules for header imports. (#7613)

Browse Source 
Make multiple imports of the same header only parse it once per C++
domain. Reuse of the same header in `--share-cpp-ast` mode now reuses
the representation.

Importing a Carbon file with C++ dependencies now makes those transitive
C++ dependencies in the same C++ domain visible too.

Assisted-by: Gemini via Antigravity
This commit is contained in:
Richard Smith
2026-08-06 13:32:37 +00:00
committed by GitHub
parent b9692a0e77
commit a1e843718e
19 changed files with 324 additions and 164 deletions
Download Patch File Download Diff File Expand all files Collapse all files
toolchain/check/testdata/interop/cpp/function/import/thunk_ast.carbon
Vendored
+19 -17
View File
@@ -18,9 +18,16 @@
// --- thunk_required.h
auto foo(short a) -> void;
// CHECK:STDOUT: |-FunctionDecl {{0x[a-f0-9]+}} <./thunk_required.h:[[@LINE-1]]:1, col:22> col:6 in import_thunk_required.carbon hidden used foo 'auto (short) -> void' external-linkage
// CHECK:STDOUT: | `-ParmVarDecl {{0x[a-f0-9]+}} <col:10, col:16> col:16 in import_thunk_required.carbon hidden a 'short'
// CHECK:STDOUT: |-FunctionDecl {{0x[a-f0-9]+}} <col:6> col:6 in import_thunk_required.carbon hidden foo__carbon_thunk 'void (short * _Nonnull)' inline internal-linkage
// CHECK:STDOUT: |-FunctionDecl {{0x[a-f0-9]+}} <./thunk_required.h:[[@LINE-1]]:1, col:22> col:6 in thunk_required.h hidden used foo 'auto (short) -> void' external-linkage
// CHECK:STDOUT: | `-ParmVarDecl {{0x[a-f0-9]+}} <col:10, col:16> col:16 in thunk_required.h hidden a 'short'
// --- import_thunk_required.carbon
library "[[@TEST_NAME]]";
import Cpp library "thunk_required.h";
// CHECK:STDOUT: |-ImportDecl {{0x[a-f0-9]+}} <import_thunk_required.carbon:[[@LINE-1]]:38> col:38 in thunk_required.h implicit thunk_required.h
// CHECK:STDOUT: |-FunctionDecl {{0x[a-f0-9]+}} <./thunk_required.h:2:6> col:6 in import_thunk_required.carbon hidden foo__carbon_thunk 'void (short * _Nonnull)' inline internal-linkage
// CHECK:STDOUT: | |-ParmVarDecl {{0x[a-f0-9]+}} <col:6> col:6 in import_thunk_required.carbon hidden used a 'short * _Nonnull':'short *'
// CHECK:STDOUT: | |-ReturnStmt {{0x[a-f0-9]+}} <col:6>
// CHECK:STDOUT: | | `-CallExpr {{0x[a-f0-9]+}} <col:6> 'void'
@@ -34,12 +41,6 @@ auto foo(short a) -> void;
// CHECK:STDOUT: | |-InternalLinkageAttr {{0x[a-f0-9]+}} <<invalid sloc>> Implicit
// CHECK:STDOUT: | `-AsmLabelAttr {{0x[a-f0-9]+}} <col:6> Implicit "_Z3foos.carbon_thunk._"
// --- import_thunk_required.carbon
library "[[@TEST_NAME]]";
import Cpp library "thunk_required.h";
fn F() {
Cpp.foo(1 as i16);
}
@@ -51,8 +52,15 @@ fn F() {
// --- return_thunk_required.h
auto foo() -> short;
// CHECK:STDOUT: |-FunctionDecl {{0x[a-f0-9]+}} <./return_thunk_required.h:[[@LINE-1]]:1, col:15> col:6 in import_return_thunk_required.carbon hidden used foo 'auto () -> short' external-linkage
// CHECK:STDOUT: |-FunctionDecl {{0x[a-f0-9]+}} <col:6> col:6 in import_return_thunk_required.carbon hidden foo__carbon_thunk 'void (short * _Nonnull)' inline internal-linkage
// CHECK:STDOUT: |-FunctionDecl {{0x[a-f0-9]+}} <./return_thunk_required.h:[[@LINE-1]]:1, col:15> col:6 in return_thunk_required.h hidden used foo 'auto () -> short' external-linkage
// --- import_return_thunk_required.carbon
library "[[@TEST_NAME]]";
import Cpp library "return_thunk_required.h";
// CHECK:STDOUT: |-ImportDecl {{0x[a-f0-9]+}} <import_return_thunk_required.carbon:[[@LINE-1]]:45> col:45 in return_thunk_required.h implicit return_thunk_required.h
// CHECK:STDOUT: |-FunctionDecl {{0x[a-f0-9]+}} <./return_thunk_required.h:2:6> col:6 in import_return_thunk_required.carbon hidden foo__carbon_thunk 'void (short * _Nonnull)' inline internal-linkage
// CHECK:STDOUT: | |-ParmVarDecl {{0x[a-f0-9]+}} <col:6> col:6 in import_return_thunk_required.carbon hidden used return 'short * _Nonnull':'short *'
// CHECK:STDOUT: | |-CXXNewExpr {{0x[a-f0-9]+}} <col:6> 'short *' global Function {{0x[a-f0-9]+}} 'operator new' 'void *(__size_t, void *) noexcept'
// CHECK:STDOUT: | | |-CallExpr {{0x[a-f0-9]+}} <col:6> 'short'
@@ -63,12 +71,6 @@ auto foo() -> short;
// CHECK:STDOUT: | |-InternalLinkageAttr {{0x[a-f0-9]+}} <<invalid sloc>> Implicit
// CHECK:STDOUT: | `-AsmLabelAttr {{0x[a-f0-9]+}} <col:6> Implicit "_Z3foov.carbon_thunk."
// --- import_return_thunk_required.carbon
library "[[@TEST_NAME]]";
import Cpp library "return_thunk_required.h";
fn F() -> i16 {
return Cpp.foo();
}