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// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef RCC_CODEGEN_MACHINEDEBUGINFO_H
#define RCC_CODEGEN_MACHINEDEBUGINFO_H
#include "rcc/CodeGen/MachineMetadata.h"
#include "rcc/Support/Error.h"
#include <cstdint>
#include <optional>
#include <span>
#include <utility>
#include <variant>
#include <vector>
namespace rcc {
class MachineDIExpression final {
public:
MachineDIExpression() = default;
explicit MachineDIExpression(std::vector<std::uint64_t> Elements)
: Elements(std::move(Elements)) {}
[[nodiscard]] std::span<const std::uint64_t> elements() const noexcept {
return Elements;
}
friend bool operator==(const MachineDIExpression &Left,
const MachineDIExpression &Right) = default;
private:
std::vector<std::uint64_t> Elements;
};
class MachineMetadataValue final {
public:
MachineMetadataValue() = default;
[[nodiscard]] static Expected<MachineMetadataValue> reference(MachineMetadataReference Reference);
[[nodiscard]] static MachineMetadataValue expression(MachineDIExpression Expression);
[[nodiscard]] bool isValid() const noexcept {
return !std::holds_alternative<std::monostate>(Storage);
}
[[nodiscard]] const MachineMetadataReference *reference() const noexcept {
return std::get_if<MachineMetadataReference>(&Storage);
}
[[nodiscard]] const MachineDIExpression *expression() const noexcept {
return std::get_if<MachineDIExpression>(&Storage);
}
[[nodiscard]] Expected<void> verify(const MachineMetadataInfo &Metadata) const;
friend bool operator==(const MachineMetadataValue &Left,
const MachineMetadataValue &Right) = default;
private:
explicit MachineMetadataValue(MachineMetadataReference Reference) : Storage(Reference) {}
explicit MachineMetadataValue(MachineDIExpression Expression) : Storage(std::move(Expression)) {}
std::variant<std::monostate, MachineMetadataReference, MachineDIExpression> Storage;
};
struct MachineDILocationFrame final {
std::uint32_t Line = 0;
std::uint16_t Column = 0;
MachineMetadataReference Scope;
bool IsImplicitCode = false;
std::uint64_t AtomGroup = 0;
std::uint8_t AtomRank = 0;
friend constexpr bool operator==(MachineDILocationFrame Left,
MachineDILocationFrame Right) noexcept = default;
};
class MachineDILocation final {
public:
static constexpr std::uint64_t MaxAtomGroup = (std::uint64_t{1} << 61) - 1;
[[nodiscard]] static Expected<MachineDILocation>
create(std::vector<MachineDILocationFrame> InlineChain,
std::optional<MachineMetadataReference> TerminalInlinedAt = std::nullopt);
[[nodiscard]] std::span<const MachineDILocationFrame> inlineChain() const noexcept {
return InlineChain;
}
[[nodiscard]] std::optional<MachineMetadataReference> terminalInlinedAt() const noexcept {
return TerminalInlinedAt;
}
[[nodiscard]] Expected<void> verify(const MachineMetadataInfo &Metadata) const;
friend bool operator==(const MachineDILocation &Left, const MachineDILocation &Right) = default;
private:
MachineDILocation(std::vector<MachineDILocationFrame> InlineChain,
std::optional<MachineMetadataReference> TerminalInlinedAt)
: InlineChain(std::move(InlineChain)), TerminalInlinedAt(TerminalInlinedAt) {}
[[nodiscard]] Expected<void> verifyStructure() const;
std::vector<MachineDILocationFrame> InlineChain;
std::optional<MachineMetadataReference> TerminalInlinedAt;
};
class MachineDebugLocation final {
public:
MachineDebugLocation() = default;
[[nodiscard]] static Expected<MachineDebugLocation> reference(MachineMetadataReference Reference);
[[nodiscard]] static MachineDebugLocation inlineLocation(MachineDILocation Location);
[[nodiscard]] bool isValid() const noexcept {
return !std::holds_alternative<std::monostate>(Storage);
}
[[nodiscard]] const MachineMetadataReference *reference() const noexcept {
return std::get_if<MachineMetadataReference>(&Storage);
}
[[nodiscard]] const MachineDILocation *inlineLocation() const noexcept {
return std::get_if<MachineDILocation>(&Storage);
}
[[nodiscard]] Expected<void> verify(const MachineMetadataInfo &Metadata) const;
friend bool operator==(const MachineDebugLocation &Left,
const MachineDebugLocation &Right) = default;
private:
explicit MachineDebugLocation(MachineMetadataReference Reference) : Storage(Reference) {}
explicit MachineDebugLocation(MachineDILocation Location) : Storage(std::move(Location)) {}
std::variant<std::monostate, MachineMetadataReference, MachineDILocation> Storage;
};
struct MachineVariableDebugInfo final {
std::optional<MachineMetadataReference> Variable;
std::optional<MachineMetadataValue> Expression;
std::optional<MachineDebugLocation> Location;
[[nodiscard]] Expected<void> verifyStructure() const;
[[nodiscard]] Expected<void> verify(const MachineMetadataInfo &Metadata) const;
friend bool operator==(const MachineVariableDebugInfo &Left,
const MachineVariableDebugInfo &Right) = default;
};
} // namespace rcc
#endif // RCC_CODEGEN_MACHINEDEBUGINFO_H
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