[PATCH] D116318: [clang-format][NFC] Fix a bug in getPreviousToken() in the parser

[Owen Pan via Phabricator via cfe-commits]

owenpan created this revision.
owenpan added reviewers: MyDeveloperDay, HazardyKnusperkeks, curdeius.
owenpan added a project: clang-format.
owenpan requested review of this revision.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.

Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D116318

Files:
  clang/lib/Format/UnwrappedLineParser.cpp


Index: clang/lib/Format/UnwrappedLineParser.cpp
===================================================================
--- clang/lib/Format/UnwrappedLineParser.cpp
+++ clang/lib/Format/UnwrappedLineParser.cpp
@@ -32,7 +32,7 @@
   // Returns the next token in the token stream.
   virtual FormatToken *getNextToken() = 0;
 
-  // Returns the token precedint the token returned by the last call to
+  // Returns the token preceding the token returned by the last call to
   // getNextToken() in the token stream, or nullptr if no such token exists.
   virtual FormatToken *getPreviousToken() = 0;
 
@@ -246,8 +246,7 @@
   }
 
   FormatToken *getPreviousToken() override {
-    assert(Position > 0);
-    return Tokens[Position - 1];
+    return Position > 0 ? Tokens[Position - 1] : nullptr;
   }
 
   FormatToken *peekNextToken() override {


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