Separate C++ format from generation

Author: Derek Hower

.pre-commit-config.yaml

@@ -56,4 +56,5 @@ repos:
     rev: "v19.1.7"
     hooks:
       - id: clang-format
+        types_or: [c++, c]
         files: \.(hpp|cpp)$

backends/cpp_hart_gen/tasks.rake

@@ -73,7 +73,7 @@ rule %r{#{CPP_HART_GEN_DST}/[^/]+/src/[^/]+\.cxx} => proc { |tname|
 end
 
 # a config-specifc generated header
-rule %r{#{CPP_HART_GEN_DST}/.*/include/udb/cfgs/[^/]+/[^/]+\.hxx} => proc { |tname|
+rule %r{#{CPP_HART_GEN_DST}/.*/include/udb/cfgs/[^/]+/[^/]+\.hxx\.unformatted} => proc { |tname|
   parts = tname.split("/")
   filename = parts[-1]
   [
@@ -96,7 +96,12 @@ rule %r{#{CPP_HART_GEN_DST}/.*/include/udb/cfgs/[^/]+/[^/]+\.hxx} => proc { |tna
 
   FileUtils.mkdir_p File.dirname(t.name)
   File.write(t.name, erb.result(CppHartGen::TemplateEnv.new(cfg_arch).get_binding))
-  sh "clang-format -i #{t.name}"
+end
+
+rule %r{#{CPP_HART_GEN_DST}/.*/include/udb/cfgs/[^/]+/[^/]+\.hxx} => proc { |tname|
+  [tname.rsub(".unformatted", "")]
+} do |t|
+  sh "clang-format #{t.name.rsub('.unformatted', '')} > #{t.name}"
 end
 
 rule %r{#{CPP_HART_GEN_DST}/.*/src/cfgs/[^/]+/[^/]+\.cxx} => proc { |tname|
@@ -141,7 +146,8 @@ rule %r{#{CPP_HART_GEN_DST}/[^/]+/build/Makefile} => [
     "cmake",
     "-S#{CPP_HART_GEN_DST}/#{build_name}",
     "-B#{CPP_HART_GEN_DST}/#{build_name}/build",
-    "-DCONFIG_LIST=\"#{ENV['CONFIG'].gsub(',', ';')}\""
+    "-DCONFIG_LIST=\"#{ENV['CONFIG'].gsub(',', ';')}\"",
+    "-DCMAKE_EXPORT_COMPILE_COMMANDS=ON"
   ].join(" ")
 
   sh cmd