[llvm-cov] Add the "Go to first unexecuted line" feature.

This patch provides easy navigation to find the zero count lines, especially useful when the source file is very large.

Differential Revision: https://reviews.llvm.org/D23277

llvm-svn: 280739

1 files changed, 5 insertions, 1 deletions

diff --git a/llvm/tools/llvm-cov/SourceCoverageView.h b/llvm/tools/llvm-cov/SourceCoverageView.h
index eb820e316b4..410c8fd1c26 100644
--- a/llvm/tools/llvm-cov/SourceCoverageView.h
+++ b/llvm/tools/llvm-cov/SourceCoverageView.h
@@ -175,6 +175,9 @@ class SourceCoverageView {
   /// Specifies whether or not the view is a function view.
   bool FunctionView;
 
+  /// Get the first uncovered line number for the source file.
+  unsigned getFirstUncoveredLineNo();
+
 protected:
   struct LineRef {
     StringRef Line;
@@ -195,7 +198,8 @@ protected:
   virtual void renderViewFooter(raw_ostream &OS) = 0;
 
   /// \brief Render the source name for the view.
-  virtual void renderSourceName(raw_ostream &OS, bool WholeFile) = 0;
+  virtual void renderSourceName(raw_ostream &OS, bool WholeFile,
+                                unsigned FirstUncoveredLineNo) = 0;
 
   /// \brief Render the line prefix at the given \p ViewDepth.
   virtual void renderLinePrefix(raw_ostream &OS, unsigned ViewDepth) = 0;