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Fix preprocessor line numbers if includes aren't supported

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This commit is contained in:
Jonathan Müller 2017-10-10 21:13:29 +02:00
commit b28fff6c37
2 changed files with 30 additions and 16 deletions
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20
src/libclang/preprocessor.cpp
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@ -30,6 +30,11 @@ namespace
return '"' + std::move(str) + '"';
}
bool support_include(const libclang_compile_config& c)
{
return detail::libclang_compile_config_access::clang_version(c) >= 40000;
}
// build the command that runs the preprocessor
std::string get_command(const libclang_compile_config& c, const char* full_path)
{
@ -39,7 +44,7 @@ namespace
// -C: keep comments
// -dD: print macro definitions as well
auto flags = std::string("-x c++ -I. -E -C -dD");
if (detail::libclang_compile_config_access::clang_version(c) >= 40000)
if (support_include(c))
// -Xclang -dI: print include directives as well (clang >= 4.0.0)
flags += " -Xclang -dI";
// -fno-caret-diagnostics: don't show the source extract in diagnostics
@ -784,9 +789,16 @@ detail::preprocessor_output detail::preprocess(const libclang_compile_config& co
if (file_depth == 0u)
{
DEBUG_ASSERT(lm.value().file == path, detail::assert_handler{});
// difference is 1 if coming from an included file (because newline of include is already written)
// difference is 0 if coming from a builtin file (because no include has been written)
DEBUG_ASSERT(p.cur_line() - lm.value().line <= 1u, detail::assert_handler{});
if (lm.value().line > p.cur_line())
// might happen in weird cases
p.write_str(std::string(lm.value().line - p.cur_line(), '\n'));
else
// difference is 1 if coming from an included file (because newline of include is already written)
// difference is 0 if coming from a builtin file (because no include has been written)
DEBUG_ASSERT(p.cur_line() - lm.value().line <= 1u,
detail::assert_handler{});
p.enable_write();
}
break;