[PATCH] D55488: Add utility for dumping a label with child nodes

[Stephen Kelly via Phabricator via cfe-commits]

steveire created this revision.
steveire added a reviewer: aaron.ballman.
Herald added a subscriber: cfe-commits.

Use it to add optional label nodes to Stmt dumps.  This preserves
behavior of InitExprList dump:

// CHECK-NEXT: `-InitListExpr {{.+}} <col:13, col:15> 'U [3]'
// CHECK-NEXT:   |-array filler
// CHECK-NEXT:   | `-InitListExpr {{.+}} <col:15> 'U' field Field {{.+}} 'i' 'int'
// CHECK-NEXT:   `-InitListExpr {{.+}} <col:14> 'U' field Field {{.+}} 'i' 'int'
// CHECK-NEXT:     `-IntegerLiteral {{.+}} <col:14> 'int' 1


Repository:
  rC Clang

https://reviews.llvm.org/D55488

Files:
  include/clang/AST/ASTDumperUtils.h
  lib/AST/ASTDumper.cpp


Index: lib/AST/ASTDumper.cpp
===================================================================
--- lib/AST/ASTDumper.cpp
+++ lib/AST/ASTDumper.cpp
@@ -63,6 +63,9 @@
     template<typename Fn> void dumpChild(Fn doDumpChild) {
       TreeStructure.addChild(doDumpChild);
     }
+    template <typename Fn> void dumpChild(const char *label, Fn doDumpChild) {
+      TreeStructure.addChild(label, doDumpChild);
+    }
 
   public:
     ASTDumper(raw_ostream &OS, const CommandTraits *Traits,
@@ -83,7 +86,7 @@
     void setDeserialize(bool D) { Deserialize = D; }
 
     void dumpDecl(const Decl *D);
-    void dumpStmt(const Stmt *S);
+    void dumpStmt(const Stmt *S, const char *label = nullptr);
 
     // Utilities
     void dumpType(QualType T) { NodeDumper.dumpType(T); }
@@ -1711,8 +1714,8 @@
 //  Stmt dumping methods.
 //===----------------------------------------------------------------------===//
 
-void ASTDumper::dumpStmt(const Stmt *S) {
-  dumpChild([=] {
+void ASTDumper::dumpStmt(const Stmt *S, const char *label) {
+  dumpChild(label, [=] {
     if (!S) {
       ColorScope Color(OS, ShowColors, NullColor);
       OS << "<<<NULL>>>";
@@ -1978,10 +1981,7 @@
     NodeDumper.dumpBareDeclRef(Field);
   }
   if (auto *Filler = ILE->getArrayFiller()) {
-    dumpChild([=] {
-      OS << "array filler";
-      dumpStmt(Filler);
-    });
+    dumpStmt(Filler, "array filler");
   }
 }
 
Index: include/clang/AST/ASTDumperUtils.h
===================================================================
--- include/clang/AST/ASTDumperUtils.h
+++ include/clang/AST/ASTDumperUtils.h
@@ -109,6 +109,16 @@
   std::string Prefix;
 
 public:
+  /// Add a child of the current node with a label.
+  /// Calls doAddChild without arguments
+  template <typename Fn> void addChild(const char *label, Fn doAddChild) {
+    if (!label)
+      return addChild(doAddChild);
+    addChild([=] {
+      OS << label;
+      addChild(doAddChild);
+    });
+  }
   /// Add a child of the current node.  Calls doAddChild without arguments
   template <typename Fn> void addChild(Fn doAddChild) {
     // If we're at the top level, there's nothing interesting to do; just


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D55488.177413.patch
Type: text/x-patch
Size: 2160 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/cfe-commits/attachments/20181209/6cea8d57/attachment.bin>