[clangd] Move helpers that convert Replacements to TextEdits to SourceCode.h

[ioeric]

• [clangd] Add helper for collecting #include directives in file.

[ilya-biryukov]

LGTM, just a few non-blocking NITs with questions.

clangd/SourceCode.cpp

180

NIT: the comment about json array does not make any sense, given that we merely return a vector.
(that was true before the change too)

clangd/SourceCode.h

70

Do we really need to expose separate functions for vector<tooling::Replacement> and tooling::Replacements, given that both are trivial: loop over the array, convert each item?
Having them in .cpp file didn't hurt, but they seems redundant in the public header.
WDYT?

[ioeric]

• Got rid of a helper for std::vector<Replacement>

clangd/SourceCode.h

70

Good point. Use of std::vector<Replacement> should be discouraged anyway. I removed this function and inline the conversion for std::vector<Replacement> as this is only used in rename (which should probably be fixed to use tooling::Replacements instead).

clangd/ClangdLSPServer.cpp

#endif
   uriFromAbsolutePath(llvm::StringRef AbsolutePath) const override {
     llvm_unreachable("Clangd must never create a test URI.");
   }
 };
 
 static URISchemeRegistry::Add<TestScheme>
     X("test", "Test scheme for clangd lit tests.");
 
-TextEdit replacementToEdit(StringRef Code, const tooling::Replacement &R) {
-  Range ReplacementRange = {
-      offsetToPosition(Code, R.getOffset()),
-      offsetToPosition(Code, R.getOffset() + R.getLength())};
-  return {ReplacementRange, R.getReplacementText()};
-}
-
-std::vector<TextEdit>
-replacementsToEdits(StringRef Code,
-                    const std::vector<tooling::Replacement> &Replacements) {
-  // Turn the replacements into the format specified by the Language Server
-  // Protocol. Fuse them into one big JSON array.
-  std::vector<TextEdit> Edits;
-  for (const auto &R : Replacements)
-    Edits.push_back(replacementToEdit(Code, R));
-  return Edits;
-}
-
-std::vector<TextEdit> replacementsToEdits(StringRef Code,
-                                          const tooling::Replacements &Repls) {
-  std::vector<TextEdit> Edits;
-  for (const auto &R : Repls)
-    Edits.push_back(replacementToEdit(Code, R));
-  return Edits;
-}
-
 SymbolKindBitset defaultSymbolKinds() {
   SymbolKindBitset Defaults;
   for (size_t I = SymbolKindMin; I <= static_cast<size_t>(SymbolKind::Array);
        ++I)
     Defaults.set(I);
   return Defaults;
 }
 

clangd/SourceCode.h

 // Various code that examines C++ source code without using heavy AST machinery
 // (and often not even the lexer). To be used sparingly!
 //
 //===----------------------------------------------------------------------===//
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANGD_SOURCECODE_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANGD_SOURCECODE_H
 #include "Protocol.h"
 #include "clang/Basic/SourceLocation.h"
+#include "clang/Tooling/Core/Replacement.h"
 
 namespace clang {
 class SourceManager;
 
 namespace clangd {
 
 /// Turn a [line, column] pair into an offset in Code.
 ///

 // Prefer to use SourceManager if one is available.
 std::pair<size_t, size_t> offsetToClangLineColumn(llvm::StringRef Code,
                                                   size_t Offset);
 
 /// From "a::b::c", return {"a::b::", "c"}. Scope is empty if there's no
 /// qualifier.
 std::pair<llvm::StringRef, llvm::StringRef>
 splitQualifiedName(llvm::StringRef QName);
+TextEdit replacementToEdit(StringRef Code, const tooling::Replacement &R);
+
+std::vector<TextEdit>
+replacementsToEdits(StringRef Code,
+                    const std::vector<tooling::Replacement> &Replacements);
+
+std::vector<TextEdit> replacementsToEdits(StringRef Code,
+                                          const tooling::Replacements &Repls);
 
 } // namespace clangd
 } // namespace clang
 #endif

clangd/SourceCode.cpp

 std::pair<llvm::StringRef, llvm::StringRef>
 splitQualifiedName(llvm::StringRef QName) {
   size_t Pos = QName.rfind("::");
   if (Pos == llvm::StringRef::npos)
     return {StringRef(), QName};
   return {QName.substr(0, Pos + 2), QName.substr(Pos + 2)};
 }
 
+TextEdit replacementToEdit(StringRef Code, const tooling::Replacement &R) {
+  Range ReplacementRange = {
+      offsetToPosition(Code, R.getOffset()),
+      offsetToPosition(Code, R.getOffset() + R.getLength())};
+  return {ReplacementRange, R.getReplacementText()};
+}
+
+std::vector<TextEdit>
+replacementsToEdits(StringRef Code,
+                    const std::vector<tooling::Replacement> &Replacements) {
+  // Turn the replacements into the format specified by the Language Server
+  // Protocol. Fuse them into one big JSON array.
+  std::vector<TextEdit> Edits;
+  for (const auto &R : Replacements)
+    Edits.push_back(replacementToEdit(Code, R));
+  return Edits;
+}
+
+std::vector<TextEdit> replacementsToEdits(StringRef Code,
+                                          const tooling::Replacements &Repls) {
+  std::vector<TextEdit> Edits;
+  for (const auto &R : Repls)
+    Edits.push_back(replacementToEdit(Code, R));
+  return Edits;
+}
+
 } // namespace clangd
 } // namespace clang