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#pragma once
/**
* @file
*
* @brief Pos and AbstractPos
*/
#include <cstdint>
#include <string>
#include "source-path.hh"
namespace nix {
/**
* A position and an origin for that position (like a source file).
*/
struct Pos
{
uint32_t line = 0;
uint32_t column = 0;
struct Stdin {
ref<std::string> source;
bool operator==(const Stdin & rhs) const
{ return *source == *rhs.source; }
bool operator!=(const Stdin & rhs) const
{ return *source != *rhs.source; }
bool operator<(const Stdin & rhs) const
{ return *source < *rhs.source; }
};
struct String {
ref<std::string> source;
bool operator==(const String & rhs) const
{ return *source == *rhs.source; }
bool operator!=(const String & rhs) const
{ return *source != *rhs.source; }
bool operator<(const String & rhs) const
{ return *source < *rhs.source; }
};
typedef std::variant<std::monostate, Stdin, String, SourcePath> Origin;
Origin origin = std::monostate();
Pos() { }
Pos(uint32_t line, uint32_t column, Origin origin)
: line(line), column(column), origin(origin) { }
Pos(Pos & other) = default;
Pos(const Pos & other) = default;
Pos(Pos && other) = default;
Pos(const Pos * other);
explicit operator bool() const { return line > 0; }
operator std::shared_ptr<Pos>() const;
/**
* Return the contents of the source file.
*/
std::optional<std::string> getSource() const;
void print(std::ostream & out, bool showOrigin) const;
std::optional<LinesOfCode> getCodeLines() const;
bool operator==(const Pos & rhs) const = default;
bool operator!=(const Pos & rhs) const = default;
bool operator<(const Pos & rhs) const;
};
std::ostream & operator<<(std::ostream & str, const Pos & pos);
}
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