[PATCH] D101365: [clang-query] Add check to prevent setting srcloc when no introspection is available.

[Nathan James via Phabricator via cfe-commits]

njames93 created this revision.
njames93 added reviewers: steveire, aaron.ballman.
njames93 requested review of this revision.
Herald added a project: clang-tools-extra.
Herald added a subscriber: cfe-commits.

Checks if introspection support is available set output kind parser.
If it isn't present the auto complete will not suggest `srcloc` and an error query will be reported if a user tries to access it.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D101365

Files:
  clang-tools-extra/clang-query/QueryParser.cpp


Index: clang-tools-extra/clang-query/QueryParser.cpp
===================================================================
--- clang-tools-extra/clang-query/QueryParser.cpp
+++ clang-tools-extra/clang-query/QueryParser.cpp
@@ -11,6 +11,7 @@
 #include "QuerySession.h"
 #include "clang/ASTMatchers/Dynamic/Parser.h"
 #include "clang/Basic/CharInfo.h"
+#include "clang/Tooling/NodeIntrospection.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/StringSwitch.h"
 #include <set>
@@ -104,17 +105,23 @@
 
 template <typename QueryType> QueryRef QueryParser::parseSetOutputKind() {
   StringRef ValStr;
-  unsigned OutKind = LexOrCompleteWord<unsigned>(this, ValStr)
-                         .Case("diag", OK_Diag)
-                         .Case("print", OK_Print)
-                         .Case("detailed-ast", OK_DetailedAST)
-                         .Case("srcloc", OK_SrcLoc)
-                         .Case("dump", OK_DetailedAST)
-                         .Default(~0u);
+  unsigned OutKind =
+      LexOrCompleteWord<unsigned>(this, ValStr)
+          .Case("diag", OK_Diag)
+          .Case("print", OK_Print)
+          .Case("detailed-ast", OK_DetailedAST)
+          .Case("srcloc", OK_SrcLoc,
+                /*IsCompletion=*/
+                tooling::NodeIntrospection::hasIntrospectionSupport())
+          .Case("dump", OK_DetailedAST)
+          .Default(~0u);
   if (OutKind == ~0u) {
     return new InvalidQuery(
-        "expected 'diag', 'print', 'detailed-ast' or 'dump', got '" + ValStr +
-        "'");
+        "expected 'diag', 'print', 'detailed-ast'" +
+        StringRef(tooling::NodeIntrospection::hasIntrospectionSupport()
+                      ? ", 'srcloc'"
+                      : "") +
+        " or 'dump', got '" + ValStr + "'");
   }
 
   switch (OutKind) {
@@ -125,7 +132,9 @@
   case OK_Print:
     return new QueryType(&QuerySession::PrintOutput);
   case OK_SrcLoc:
-    return new QueryType(&QuerySession::SrcLocOutput);
+    if (tooling::NodeIntrospection::hasIntrospectionSupport())
+      return new QueryType(&QuerySession::SrcLocOutput);
+    return new InvalidQuery("'srcloc' output support is not available.");
   }
 
   llvm_unreachable("Invalid output kind");


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