Introduce a new libclang parsing flag,
CXTranslationUnit_NestedMacroInstantiations, which indicates whether
we want to see "nested" macro instantiations (e.g., those that occur
inside other macro instantiations) within the detailed preprocessing
record. Many clients (e.g., those that only care about visible tokens)
don't care about this information, and in code that uses preprocessor
metaprogramming, this information can have a very high cost.
Addresses <rdar://problem/9389320>.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130990 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Index/nested-macro-instantiations.cpp b/test/Index/nested-macro-instantiations.cpp
new file mode 100644
index 0000000..d0c9bbb
--- /dev/null
+++ b/test/Index/nested-macro-instantiations.cpp
@@ -0,0 +1,20 @@
+#define FOO(x) x
+#define BAR(x) FOO(x)
+#define WIBBLE(x) BAR(x)
+
+WIBBLE(int x);
+
+// RUN: env CINDEXTEST_NESTED_MACROS=1 c-index-test -test-load-source all %s | FileCheck -check-prefix CHECK-WITH-NESTED %s
+// RUN: env CINDEXTEST_EDITING=1 CINDEXTEST_NESTED_MACROS=1 c-index-test -test-load-source all %s | FileCheck -check-prefix CHECK-WITH-NESTED %s
+// RUN: env CINDEXTEST_EDITING=1 CINDEXTEST_NESTED_MACROS=1 c-index-test -test-load-source-reparse 5 all %s | FileCheck -check-prefix CHECK-WITH-NESTED %s
+// CHECK-WITH-NESTED: nested-macro-instantiations.cpp:5:1: macro instantiation=WIBBLE:3:9 Extent=[5:1 - 5:7]
+// CHECK-WITH-NESTED: nested-macro-instantiations.cpp:3:19: macro instantiation=BAR:2:9 Extent=[3:19 - 5:14]
+// CHECK-WITH-NESTED: nested-macro-instantiations.cpp:2:16: macro instantiation=FOO:1:9 Extent=[2:16 - 5:14]
+// CHECK-WITH-NESTED: nested-macro-instantiations.cpp:5:1: VarDecl=x:5:1 (Definition) Extent=[5:1 - 5:14]
+
+// RUN: c-index-test -test-load-source all %s | FileCheck -check-prefix CHECK-WITHOUT-NESTED %s
+// RUN: env CINDEXTEST_EDITING=1 c-index-test -test-load-source all %s | FileCheck -check-prefix CHECK-WITHOUT-NESTED %s
+// RUN: env CINDEXTEST_EDITING=1 c-index-test -test-load-source-reparse 5 all %s | FileCheck -check-prefix CHECK-WITHOUT-NESTED %s
+// CHECK-WITHOUT-NESTED: nested-macro-instantiations.cpp:5:1: macro instantiation=WIBBLE:3:9 Extent=[5:1 - 5:7]
+// CHECK-WITHOUT-NESTED-NOT: nested-macro-instantiations.cpp:3:19: macro instantiation=BAR:2:9 Extent=[3:19 - 5:14]
+// CHECK-WITHOUT-NESTED: nested-macro-instantiations.cpp:5:1: VarDecl=x:5:1 (Definition) Extent=[5:1 - 5:14]