erichkeane created this revision.
Diagnostic Categories are fairly annoying, and are only enforced
by a runtime-debug-only assert. This puts in a touch more work
to get this all done at compile-time with static asserts.
https://reviews.llvm.org/D37122
Files:
include/clang/Basic/AllDiagnostics.h
include/clang/Basic/DiagnosticIDs.h
lib/Basic/DiagnosticIDs.cpp
test/Frontend/system-header-line-directive-ms-lineendings.c
Index: test/Frontend/system-header-line-directive-ms-lineendings.c
===================================================================
--- test/Frontend/system-header-line-directive-ms-lineendings.c
+++ test/Frontend/system-header-line-directive-ms-lineendings.c
@@ -1,21 +1,21 @@
-// RUN: %clang_cc1 %s -E -o - -I %S/Inputs -isystem %S/Inputs/SystemHeaderPrefix | FileCheck %s
-#include <noline.h>
-#include <line-directive-in-system.h>
-
-#include "line-directive.h"
-
-// This tests that the line numbers for the current file are correctly outputted
-// for the include-file-completed test case.
-
-// CHECK: # 1 "{{.*}}system-header-line-directive-ms-lineendings.c" 2
-// CHECK: # 1 "{{.*}}noline.h" 1 3
-// CHECK: foo();
-// CHECK: # 3 "{{.*}}system-header-line-directive-ms-lineendings.c" 2
-// CHECK: # 1 "{{.*}}line-directive-in-system.h" 1 3
-// The "3" below indicates that "foo.h" is considered a system header.
-// CHECK: # 1 "foo.h" 3
-// CHECK: foo();
-// CHECK: # 4 "{{.*}}system-header-line-directive-ms-lineendings.c" 2
-// CHECK: # 1 "{{.*}}line-directive.h" 1
-// CHECK: # 10 "foo.h"{{$}}
-// CHECK: # 6 "{{.*}}system-header-line-directive-ms-lineendings.c" 2
+// RUN: %clang_cc1 %s -E -o - -I %S/Inputs -isystem %S/Inputs/SystemHeaderPrefix | FileCheck %s
+#include <noline.h>
+#include <line-directive-in-system.h>
+
+#include "line-directive.h"
+
+// This tests that the line numbers for the current file are correctly outputted
+// for the include-file-completed test case.
+
+// CHECK: # 1 "{{.*}}system-header-line-directive-ms-lineendings.c" 2
+// CHECK: # 1 "{{.*}}noline.h" 1 3
+// CHECK: foo();
+// CHECK: # 3 "{{.*}}system-header-line-directive-ms-lineendings.c" 2
+// CHECK: # 1 "{{.*}}line-directive-in-system.h" 1 3
+// The "3" below indicates that "foo.h" is considered a system header.
+// CHECK: # 1 "foo.h" 3
+// CHECK: foo();
+// CHECK: # 4 "{{.*}}system-header-line-directive-ms-lineendings.c" 2
+// CHECK: # 1 "{{.*}}line-directive.h" 1
+// CHECK: # 10 "foo.h"{{$}}
+// CHECK: # 6 "{{.*}}system-header-line-directive-ms-lineendings.c" 2
Index: lib/Basic/DiagnosticIDs.cpp
===================================================================
--- lib/Basic/DiagnosticIDs.cpp
+++ lib/Basic/DiagnosticIDs.cpp
@@ -96,18 +96,6 @@
/// GetDiagInfo - Return the StaticDiagInfoRec entry for the specified DiagID,
/// or null if the ID is invalid.
static const StaticDiagInfoRec *GetDiagInfo(unsigned DiagID) {
- // If assertions are enabled, verify that the StaticDiagInfo array is sorted.
-#ifndef NDEBUG
- static bool IsFirst = true; // So the check is only performed on first call.
- if (IsFirst) {
- assert(std::is_sorted(std::begin(StaticDiagInfo),
- std::end(StaticDiagInfo)) &&
- "Diag ID conflict, the enums at the start of clang::diag (in "
- "DiagnosticIDs.h) probably need to be increased");
- IsFirst = false;
- }
-#endif
-
// Out of bounds diag. Can't be in the table.
using namespace diag;
if (DiagID >= DIAG_UPPER_LIMIT || DiagID <= DIAG_START_COMMON)
Index: include/clang/Basic/DiagnosticIDs.h
===================================================================
--- include/clang/Basic/DiagnosticIDs.h
+++ include/clang/Basic/DiagnosticIDs.h
@@ -26,19 +26,32 @@
// Import the diagnostic enums themselves.
namespace diag {
+ // Size of each of the diagnostic categories.
+ enum {
+ DIAG_SIZE_COMMON = 300,
+ DIAG_SIZE_DRIVER = 200,
+ DIAG_SIZE_FRONTEND = 100,
+ DIAG_SIZE_SERIALIZATION = 120,
+ DIAG_SIZE_LEX = 400,
+ DIAG_SIZE_PARSE = 500,
+ DIAG_SIZE_AST = 110,
+ DIAG_SIZE_COMMENT = 100,
+ DIAG_SIZE_SEMA = 3500,
+ DIAG_SIZE_ANALYSIS = 100
+ };
// Start position for diagnostics.
enum {
- DIAG_START_COMMON = 0,
- DIAG_START_DRIVER = DIAG_START_COMMON + 300,
- DIAG_START_FRONTEND = DIAG_START_DRIVER + 200,
- DIAG_START_SERIALIZATION = DIAG_START_FRONTEND + 100,
- DIAG_START_LEX = DIAG_START_SERIALIZATION + 120,
- DIAG_START_PARSE = DIAG_START_LEX + 400,
- DIAG_START_AST = DIAG_START_PARSE + 500,
- DIAG_START_COMMENT = DIAG_START_AST + 110,
- DIAG_START_SEMA = DIAG_START_COMMENT + 100,
- DIAG_START_ANALYSIS = DIAG_START_SEMA + 3500,
- DIAG_UPPER_LIMIT = DIAG_START_ANALYSIS + 100
+ DIAG_START_COMMON = 0,
+ DIAG_START_DRIVER = DIAG_START_COMMON + DIAG_SIZE_COMMON,
+ DIAG_START_FRONTEND = DIAG_START_DRIVER + DIAG_SIZE_DRIVER,
+ DIAG_START_SERIALIZATION = DIAG_START_FRONTEND + DIAG_SIZE_FRONTEND,
+ DIAG_START_LEX = DIAG_START_SERIALIZATION + DIAG_SIZE_SERIALIZATION,
+ DIAG_START_PARSE = DIAG_START_LEX + DIAG_SIZE_LEX,
+ DIAG_START_AST = DIAG_START_PARSE + DIAG_SIZE_PARSE,
+ DIAG_START_COMMENT = DIAG_START_AST + DIAG_SIZE_AST,
+ DIAG_START_SEMA = DIAG_START_COMMENT + DIAG_SIZE_COMMENT,
+ DIAG_START_ANALYSIS = DIAG_START_SEMA + DIAG_SIZE_SEMA,
+ DIAG_UPPER_LIMIT = DIAG_START_ANALYSIS + DIAG_SIZE_ANALYSIS
};
class CustomDiagInfo;
Index: include/clang/Basic/AllDiagnostics.h
===================================================================
--- include/clang/Basic/AllDiagnostics.h
+++ include/clang/Basic/AllDiagnostics.h
@@ -32,6 +32,29 @@
public:
enum { Size = SizeOfStr };
};
+
+#define STRINGIFY_NAME(NAME) #NAME
+#define VALIDATE_DIAG_SIZE(NAME) \
+ static_assert( \
+ static_cast<unsigned>(diag::NUM_BUILTIN_##NAME##_DIAGNOSTICS) < \
+ static_cast<unsigned>(diag::DIAG_START_##NAME) + \
+ static_cast<unsigned>(diag::DIAG_SIZE_##NAME), \
+ STRINGIFY_NAME( \
+ DIAG_SIZE_##NAME) " is insufficient to contain all " \
+ "diagnostics, it may need to be made larger in " \
+ "DiagnosticIDs.h.");
+VALIDATE_DIAG_SIZE(COMMON)
+VALIDATE_DIAG_SIZE(DRIVER)
+VALIDATE_DIAG_SIZE(FRONTEND)
+VALIDATE_DIAG_SIZE(SERIALIZATION)
+VALIDATE_DIAG_SIZE(LEX)
+VALIDATE_DIAG_SIZE(PARSE)
+VALIDATE_DIAG_SIZE(AST)
+VALIDATE_DIAG_SIZE(COMMENT)
+VALIDATE_DIAG_SIZE(SEMA)
+VALIDATE_DIAG_SIZE(ANALYSIS)
+#undef VALIDATE_DIAG_SIZE
+#undef STRINGIFY_NAME
} // end namespace clang
#define STR_SIZE(str, fieldTy) clang::StringSizerHelper<sizeof(str)-1, \
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