[PATCH] D52693: [LLVM-C] Add an accessor for the kind of a Metadata Node

[Robert Widmann via Phabricator via llvm-commits]

CodaFi created this revision.
CodaFi added reviewers: whitequark, deadalnix.
Herald added a subscriber: llvm-commits.

Allows for retrieving the type of a metadata node.  Has the added benefit of ensuring that the C and C++ kind APIs stay in sync as a failure to add a corresponding LLVMMetadataKind will result in the switch in the accessor being semantically malformed.


Repository:
  rL LLVM

https://reviews.llvm.org/D52693

Files:
  include/llvm-c/DebugInfo.h
  lib/IR/DebugInfo.cpp


Index: lib/IR/DebugInfo.cpp
===================================================================
--- lib/IR/DebugInfo.cpp
+++ lib/IR/DebugInfo.cpp
@@ -1354,3 +1354,14 @@
 void LLVMSetSubprogram(LLVMValueRef Func, LLVMMetadataRef SP) {
   unwrap<Function>(Func)->setSubprogram(unwrap<DISubprogram>(SP));
 }
+
+LLVMMetadataKind LLVMGetMetadataKind(LLVMMetadataRef Metadata) {
+  switch(unwrap(Metadata)->getMetadataID()) {
+#define HANDLE_METADATA_LEAF(CLASS) \
+  case Metadata::CLASS##Kind: \
+    return LLVM##CLASS##MetadataKind;
+#include "llvm/IR/Metadata.def"
+  default:
+    return LLVMGenericDINodeMetadataKind;
+  }
+}
Index: include/llvm-c/DebugInfo.h
===================================================================
--- include/llvm-c/DebugInfo.h
+++ include/llvm-c/DebugInfo.h
@@ -126,6 +126,43 @@
     LLVMDWARFEmissionLineTablesOnly
 } LLVMDWARFEmissionKind;
 
+/**
+ * The kind of metadata nodes.
+ */
+typedef enum {
+  LLVMMDStringMetadataKind,
+  LLVMConstantAsMetadataMetadataKind,
+  LLVMLocalAsMetadataMetadataKind,
+  LLVMDistinctMDOperandPlaceholderMetadataKind,
+  LLVMMDTupleMetadataKind,
+  LLVMDILocationMetadataKind,
+  LLVMDIExpressionMetadataKind,
+  LLVMDIGlobalVariableExpressionMetadataKind,
+  LLVMGenericDINodeMetadataKind,
+  LLVMDISubrangeMetadataKind,
+  LLVMDIEnumeratorMetadataKind,
+  LLVMDIBasicTypeMetadataKind,
+  LLVMDIDerivedTypeMetadataKind,
+  LLVMDICompositeTypeMetadataKind,
+  LLVMDISubroutineTypeMetadataKind,
+  LLVMDIFileMetadataKind,
+  LLVMDICompileUnitMetadataKind,
+  LLVMDISubprogramMetadataKind,
+  LLVMDILexicalBlockMetadataKind,
+  LLVMDILexicalBlockFileMetadataKind,
+  LLVMDINamespaceMetadataKind,
+  LLVMDIModuleMetadataKind,
+  LLVMDITemplateTypeParameterMetadataKind,
+  LLVMDITemplateValueParameterMetadataKind,
+  LLVMDIGlobalVariableMetadataKind,
+  LLVMDILocalVariableMetadataKind,
+  LLVMDILabelMetadataKind,
+  LLVMDIObjCPropertyMetadataKind,
+  LLVMDIImportedEntityMetadataKind,
+  LLVMDIMacroMetadataKind,
+  LLVMDIMacroFileMetadataKind
+} LLVMMetadataKind;
+
 /**
  * An LLVM DWARF type encoding.
  */
@@ -1153,6 +1190,13 @@
  */
 void LLVMSetSubprogram(LLVMValueRef Func, LLVMMetadataRef SP);
 
+/**
+ * Obtain the enumerated type of a Metadata instance.
+ *
+ * @see llvm::Metadata::getMetadataID()
+ */
+LLVMMetadataKind LLVMGetMetadataKind(LLVMMetadataRef Metadata);
+
 #ifdef __cplusplus
 } /* end extern "C" */
 #endif


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D52693.167606.patch
Type: text/x-patch
Size: 2403 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20180929/138af551/attachment.bin>