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/*
* MRustC - Rust Compiler
* - By John Hodge (Mutabah/thePowersGang)
*
* span.cpp
* - Spans and error handling
*/
#include <functional>
#include <iostream>
#include <span.hpp>
#include <parse/lex.hpp>
#include <common.hpp>
Span::Span(const Position& pos):
outer_span(),
filename(pos.filename),
start_line(pos.line),
start_ofs(pos.ofs),
end_line(pos.line),
end_ofs(pos.ofs)
{
}
Span::Span():
outer_span(),
filename(""),
start_line(0), start_ofs(0),
end_line(0), end_ofs(0) // */
{
//DEBUG("Empty span");
//filename = FMT(":" << __builtin_return_address(0));
}
namespace {
void print_span_message(const Span& sp, ::std::function<void(::std::ostream&)> tag, ::std::function<void(::std::ostream&)> msg)
{
auto& sink = ::std::cerr;
sink << sp.filename << ":" << sp.start_line << ": ";
tag(sink);
sink << ":";
msg(sink);
sink << ::std::endl;
const auto* parent = sp.outer_span.get();
while(parent)
{
sink << parent->filename << ":" << parent->start_line << ": note: From here" << ::std::endl;
parent = parent->outer_span.get();
}
}
}
void Span::bug(::std::function<void(::std::ostream&)> msg) const
{
print_span_message(*this, [](auto& os){os << "BUG";}, msg);
#ifndef _WIN32
abort();
#else
exit(1);
#endif
}
void Span::error(ErrorType tag, ::std::function<void(::std::ostream&)> msg) const {
print_span_message(*this, [&](auto& os){os << "error:" << tag;}, msg);
#ifndef _WIN32
abort();
#else
exit(1);
#endif
}
void Span::warning(WarningType tag, ::std::function<void(::std::ostream&)> msg) const {
print_span_message(*this, [&](auto& os){os << "warn:" << tag;}, msg);
}
void Span::note(::std::function<void(::std::ostream&)> msg) const {
print_span_message(*this, [](auto& os){os << "note:";}, msg);
}
::std::ostream& operator<<(::std::ostream& os, const Span& sp)
{
os << sp.filename << ":" << sp.start_line;
return os;
}
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