[clang] Add missing field to SectionAttr json AST dump

[aaron.ballman]

LGTM!

clang/include/clang/AST/JSONNodeDumper.h

public:
   void Visit(const GenericSelectionExpr::ConstAssociation &A);
   void Visit(const concepts::Requirement *R);
   void Visit(const APValue &Value, QualType Ty);
 
   void VisitAliasAttr(const AliasAttr *AA);
   void VisitCleanupAttr(const CleanupAttr *CA);
   void VisitDeprecatedAttr(const DeprecatedAttr *DA);
   void VisitUnavailableAttr(const UnavailableAttr *UA);
+  void VisitSectionAttr(const SectionAttr *SA);
 
   void VisitTypedefType(const TypedefType *TT);
   void VisitUsingType(const UsingType *TT);
   void VisitFunctionType(const FunctionType *T);
   void VisitFunctionProtoType(const FunctionProtoType *T);
   void VisitRValueReferenceType(const ReferenceType *RT);
   void VisitArrayType(const ArrayType *AT);
   void VisitConstantArrayType(const ConstantArrayType *CAT);

clang/lib/AST/JSONNodeDumper.cpp

if (!DA->getReplacement().empty())
     JOS.attribute("replacement", DA->getReplacement());
 }
 
 void JSONNodeDumper::VisitUnavailableAttr(const UnavailableAttr *UA) {
   if (!UA->getMessage().empty())
     JOS.attribute("message", UA->getMessage());
 }
 
+void JSONNodeDumper::VisitSectionAttr(const SectionAttr *SA) {
+  JOS.attribute("section_name", SA->getName());
+}
+
 void JSONNodeDumper::VisitTypedefType(const TypedefType *TT) {
   JOS.attribute("decl", createBareDeclRef(TT->getDecl()));
   if (!TT->typeMatchesDecl())
     JOS.attribute("type", createQualType(TT->desugar()));
 }
 
 void JSONNodeDumper::VisitUsingType(const UsingType *TT) {
   JOS.attribute("decl", createBareDeclRef(TT->getFoundDecl()));

clang/test/AST/ast-dump-attr-json.cpp

 
 __attribute__((deprecated)) int deprecated_var0;
 __attribute__((deprecated("reason"))) int deprecated_var1;
 __attribute__((deprecated("reason", "replacement"))) int deprecated_var2;
 
 __attribute__((unavailable)) int unavailable_var0;
 __attribute__((unavailable("reason"))) int unavailable_var1;
 
+__attribute__ ((section ("SECTION_NAME"))) int section_var;
+
 // NOTE: CHECK lines have been autogenerated by gen_ast_dump_json_test.py
 // using --filters=VarDecl
 
 
 // CHECK-NOT: {{^}}Dumping
 // CHECK:  "kind": "VarDecl",
 // CHECK-NEXT:  "loc": {
 // CHECK-NEXT:   "offset": 73,

 // CHECK-NEXT:      "col": 36,
 // CHECK-NEXT:      "tokLen": 1
 // CHECK-NEXT:     }
 // CHECK-NEXT:    },
 // CHECK-NEXT:    "message": "reason"
 // CHECK-NEXT:   }
 // CHECK-NEXT:  ]
 // CHECK-NEXT: }
+
+
+// CHECK-NOT: {{^}}Dumping
+// CHECK:  "kind": "VarDecl",
+// CHECK-NEXT:  "loc": {
+// CHECK-NEXT:   "offset": 593,
+// CHECK-NEXT:   "line": 18,
+// CHECK-NEXT:   "col": 48,
+// CHECK-NEXT:   "tokLen": 11
+// CHECK-NEXT:  },
+// CHECK-NEXT:  "range": {
+// CHECK-NEXT:   "begin": {
+// CHECK-NEXT:    "offset": 546,
+// CHECK-NEXT:    "col": 1,
+// CHECK-NEXT:    "tokLen": 13
+// CHECK-NEXT:   },
+// CHECK-NEXT:   "end": {
+// CHECK-NEXT:    "offset": 593,
+// CHECK-NEXT:    "col": 48,
+// CHECK-NEXT:    "tokLen": 11
+// CHECK-NEXT:   }
+// CHECK-NEXT:  },
+// CHECK-NEXT:  "name": "section_var",
+// CHECK-NEXT:  "mangledName": "section_var",
+// CHECK-NEXT:  "type": {
+// CHECK-NEXT:   "qualType": "int"
+// CHECK-NEXT:  },
+// CHECK-NEXT:  "inner": [
+// CHECK-NEXT:   {
+// CHECK-NEXT:    "id": "0x{{.*}}",
+// CHECK-NEXT:    "kind": "SectionAttr",
+// CHECK-NEXT:    "range": {
+// CHECK-NEXT:     "begin": {
+// CHECK-NEXT:      "offset": 562,
+// CHECK-NEXT:      "col": 17,
+// CHECK-NEXT:      "tokLen": 7
+// CHECK-NEXT:     },
+// CHECK-NEXT:     "end": {
+// CHECK-NEXT:      "offset": 585,
+// CHECK-NEXT:      "col": 40,
+// CHECK-NEXT:      "tokLen": 1
+// CHECK-NEXT:     }
+// CHECK-NEXT:    },
+// CHECK-NEXT:    "section_name": "SECTION_NAME"
+// CHECK-NEXT:   }
+// CHECK-NEXT:  ]
+// CHECK-NEXT: }