clang-format: Make IncludeCategories configurable in .clang-format file.

This was made much easier by introducing an IncludeCategory struct to
replace the previously used std::pair.

Also, cleaned up documentation and added examples.

llvm-svn: 249392

1 files changed, 12 insertions, 3 deletions

diff --git a/clang/lib/Format/Format.cpp b/clang/lib/Format/Format.cpp
index 62f94b8..e9a02a0 100644
--- a/clang/lib/Format/Format.cpp
+++ b/clang/lib/Format/Format.cpp
@@ -37,6 +37,7 @@
 using clang::format::FormatStyle;
 
 LLVM_YAML_IS_FLOW_SEQUENCE_VECTOR(std::string)
+LLVM_YAML_IS_SEQUENCE_VECTOR(clang::format::FormatStyle::IncludeCategory)
 
 namespace llvm {
 namespace yaml {
@@ -247,6 +248,7 @@ template <> struct MappingTraits<FormatStyle> {
     IO.mapOptional("ExperimentalAutoDetectBinPacking",
                    Style.ExperimentalAutoDetectBinPacking);
     IO.mapOptional("ForEachMacros", Style.ForEachMacros);
+    IO.mapOptional("IncludeCategories", Style.IncludeCategories);
     IO.mapOptional("IndentCaseLabels", Style.IndentCaseLabels);
     IO.mapOptional("IndentWidth", Style.IndentWidth);
     IO.mapOptional("IndentWrappedFunctionNames",
@@ -307,6 +309,13 @@ template <> struct MappingTraits<FormatStyle::BraceWrappingFlags> {
   }
 };
 
+template <> struct MappingTraits<FormatStyle::IncludeCategory> {
+  static void mapping(IO &IO, FormatStyle::IncludeCategory &Category) {
+    IO.mapOptional("Regex", Category.Regex);
+    IO.mapOptional("Priority", Category.Priority);
+  }
+};
+
 // Allows to read vector<FormatStyle> while keeping default values.
 // IO.getContext() should contain a pointer to the FormatStyle structure, that
 // will be used to get default values for missing keys.
@@ -1737,8 +1746,8 @@ tooling::Replacements sortIncludes(const FormatStyle &Style, StringRef Code,
 
   // Create pre-compiled regular expressions for the #include categories.
   SmallVector<llvm::Regex, 4> CategoryRegexs;
-  for (const auto &IncludeBlock : Style.IncludeCategories)
-    CategoryRegexs.emplace_back(IncludeBlock.first);
+  for (const auto &Category : Style.IncludeCategories)
+    CategoryRegexs.emplace_back(Category.Regex);
 
   for (;;) {
     auto Pos = Code.find('\n', SearchFrom);
@@ -1753,7 +1762,7 @@ tooling::Replacements sortIncludes(const FormatStyle &Style, StringRef Code,
           Category = UINT_MAX;
           for (unsigned i = 0, e = CategoryRegexs.size(); i != e; ++i) {
             if (CategoryRegexs[i].match(Matches[1])) {
-              Category = Style.IncludeCategories[i].second;
+              Category = Style.IncludeCategories[i].Priority;
               break;
             }
           }