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[CodeCompletion] Generally consider header files without extension 

Real-world use case: The Qt framework's headers have the same name
as the respective class defined in them, and Qt's traditional qmake
build tool uses -I (rather than -isystem) to pull them in.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D112996
This commit is contained in:
Christian Kandeler 2021-11-09 18:12:01 +01:00 committed by Sam McCall
parent ef2d0e0f20
commit f7500a4ef7
2 changed files with 44 additions and 17 deletions
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25
clang/lib/Sema/SemaCodeComplete.cpp
View File

@ -9613,6 +9613,10 @@ void Sema::CodeCompleteIncludedFile(llvm::StringRef Dir, bool Angled) {
}
}
const StringRef &Dirname = llvm::sys::path::filename(Dir);
const bool isQt = Dirname.startswith("Qt") || Dirname == "ActiveQt";
const bool ExtensionlessHeaders =
IsSystem || isQt || Dir.endswith(".framework/Headers");
std::error_code EC;
unsigned Count = 0;
for (auto It = FS.dir_begin(Dir, EC);
@ -9639,18 +9643,19 @@ void Sema::CodeCompleteIncludedFile(llvm::StringRef Dir, bool Angled) {
AddCompletion(Filename, /*IsDirectory=*/true);
break;
case llvm::sys::fs::file_type::regular_file:
// Only files that really look like headers. (Except in system dirs).
if (!IsSystem) {
// Header extensions from Types.def, which we can't depend on here.
if (!(Filename.endswith_insensitive(".h") ||
Filename.endswith_insensitive(".hh") ||
Filename.endswith_insensitive(".hpp") ||
Filename.endswith_insensitive(".inc")))
break;
}
case llvm::sys::fs::file_type::regular_file: {
// Only files that really look like headers. (Except in special dirs).
// Header extensions from Types.def, which we can't depend on here.
const bool IsHeader = Filename.endswith_insensitive(".h") ||
Filename.endswith_insensitive(".hh") ||
Filename.endswith_insensitive(".hpp") ||
Filename.endswith_insensitive(".inc") ||
(ExtensionlessHeaders && !Filename.contains('.'));
if (!IsHeader)
break;
AddCompletion(Filename, /*IsDirectory=*/false);
break;
}
default:
break;
}

36
clang/test/CodeCompletion/included-files.cpp
View File

@ -1,35 +1,57 @@
// RUN: rm -rf %t && mkdir %t && cp %s %t/main.cc && mkdir %t/a
// RUN: touch %t/foo.h && touch %t/foo.cc && touch %t/a/foosys %t/a/foosys.h
// RUN: rm -rf %t && mkdir %t && cp %s %t/main.cc && mkdir %t/a && mkdir %t/QtCore && mkdir %t/Headers %t/Some.framework %t/Some.framework/Headers
// RUN: touch %t/foo.h && touch %t/foo.cc && touch %t/a/foosys %t/a/foosys.h && touch %t/QtCore/foosys %t/QtCore/foo.h
// RUN: touch %t/Headers/foosys %t/Headers/foo.h %t/Some.framework/Headers/foosys %t/Some.framework/Headers/foo.h
// Quoted string shows header-ish files from CWD, and all from system.
#include "foo.h"
// RUN: %clang -fsyntax-only -isystem %t/a -Xclang -code-completion-at=%t/main.cc:5:13 %t/main.cc | FileCheck -check-prefix=CHECK-1 %s
// RUN: %clang -fsyntax-only -isystem %t/a -Xclang -code-completion-at=%t/main.cc:6:13 %t/main.cc | FileCheck -check-prefix=CHECK-1 %s
// CHECK-1-NOT: foo.cc"
// CHECK-1: foo.h"
// CHECK-1: foosys"
// Quoted string with dir shows header-ish files in that subdir.
#include "a/foosys"
// RUN: %clang -fsyntax-only -isystem %t/a -Xclang -code-completion-at=%t/main.cc:12:13 %t/main.cc | FileCheck -check-prefix=CHECK-2 %s
// RUN: %clang -fsyntax-only -isystem %t/a -Xclang -code-completion-at=%t/main.cc:13:13 %t/main.cc | FileCheck -check-prefix=CHECK-2 %s
// CHECK-2-NOT: foo.h"
// CHECK-2: foosys.h"
// CHECK-2-NOT: foosys"
// Angled shows headers from system dirs.
#include <foosys>
// RUN: %clang -fsyntax-only -isystem %t/a -Xclang -code-completion-at=%t/main.cc:19:13 %t/main.cc | FileCheck -check-prefix=CHECK-3 %s
// RUN: %clang -fsyntax-only -isystem %t/a -Xclang -code-completion-at=%t/main.cc:20:13 %t/main.cc | FileCheck -check-prefix=CHECK-3 %s
// CHECK-3-NOT: foo.cc>
// CHECK-3-NOT: foo.h>
// CHECK-3: foosys>
// With -I rather than -isystem, the header extension is required.
#include <foosys>
// RUN: %clang -fsyntax-only -I %t/a -Xclang -code-completion-at=%t/main.cc:26:13 %t/main.cc | FileCheck -check-prefix=CHECK-4 %s
// RUN: %clang -fsyntax-only -I %t/a -Xclang -code-completion-at=%t/main.cc:27:13 %t/main.cc | FileCheck -check-prefix=CHECK-4 %s
// CHECK-4-NOT: foo.cc>
// CHECK-4-NOT: foo.h>
// CHECK-4-NOT: foosys>
// Backslash handling.
#include "a\foosys"
// RUN: %clang -fsyntax-only -isystem %t/a -Xclang -code-completion-at=%t/main.cc:33:13 %t/main.cc -fms-compatibility | FileCheck -check-prefix=CHECK-5 %s
// RUN: %clang -fsyntax-only -isystem %t/a -Xclang -code-completion-at=%t/main.cc:34:13 %t/main.cc -fms-compatibility | FileCheck -check-prefix=CHECK-5 %s
// CHECK-5: foosys.h"
// Qt headers don't necessarily have extensions.
#include <foosys>
// RUN: %clang -fsyntax-only -I %t/QtCore -Xclang -code-completion-at=%t/main.cc:39:13 %t/main.cc -fms-compatibility | FileCheck -check-prefix=CHECK-6 %s
// CHECK-6-NOT: foo.cc>
// CHECK-6: foo.h>
// CHECK-6: foosys>
// If the include path directly points into a framework's Headers/ directory, we allow extension-less headers.
#include <foosys>
// RUN: %clang -fsyntax-only -I %t/Some.framework/Headers -Xclang -code-completion-at=%t/main.cc:46:13 %t/main.cc -fms-compatibility | FileCheck -check-prefix=CHECK-7 %s
// CHECK-7-NOT: foo.cc>
// CHECK-7: foo.h>
// CHECK-7: foosys>
// Simply naming a directory "Headers" is not enough to allow extension-less headers.
#include <foosys>
// RUN: %clang -fsyntax-only -I %t/Headers -Xclang -code-completion-at=%t/main.cc:53:13 %t/main.cc -fms-compatibility | FileCheck -check-prefix=CHECK-8 %s
// CHECK-8-NOT: foo.cc>
// CHECK-8: foo.h>
// CHECK-8-NOT: foosys>