blob: 032523dedfca1181796bbb06454ef8152d35a56f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
// SPDX-License-Identifier: GPL-3.0-or-later
// NOLINTNEXTLINE(llvm-header-guard)
#ifndef RCC_LIB_MIR_MIRMETADATATEXTPARSER_H
#define RCC_LIB_MIR_MIRMETADATATEXTPARSER_H
#include "rcc/CodeGen/MachineDebugInfo.h"
#include "rcc/CodeGen/MachineMetadata.h"
#include "rcc/MIR/MILexer.h"
#include "rcc/Support/Error.h"
#include <cstddef>
#include <cstdint>
#include <functional>
#include <optional>
#include <string>
#include <string_view>
#include <utility>
#include <vector>
namespace rcc::mir {
class MetadataTextParser final {
public:
using Resolver = std::function<Expected<MachineMetadataReference>(std::uint32_t Slot)>;
MetadataTextParser(std::string Text, Resolver Resolve)
: Lexer("MIR metadata scalar", std::move(Text)), Resolve(std::move(Resolve)) {
do {
Tokens.push_back(Lexer.next());
} while (!Tokens.back().isErrorOrEnd());
}
[[nodiscard]] Expected<MachineMetadataReference> parseReferenceOnly();
[[nodiscard]] Expected<MachineMetadataValue> parseValue();
[[nodiscard]] Expected<MachineDebugLocation> parseLocation();
[[nodiscard]] const TextRange &diagnosticRange() const noexcept {
return token().range();
}
private:
[[nodiscard]] const MIToken &token() const noexcept {
return Tokens[Position];
}
[[nodiscard]] bool at(MITokenKind Kind) const noexcept {
return token().is(Kind);
}
void advance() noexcept {
if (Position + 1U < Tokens.size())
++Position;
}
[[nodiscard]] bool consume(MITokenKind Kind) noexcept {
if (!at(Kind))
return false;
advance();
return true;
}
[[nodiscard]] Expected<void> expect(MITokenKind Kind, std::string_view Description);
[[nodiscard]] Expected<void> finish();
[[nodiscard]] Expected<MachineMetadataReference> parseReference();
[[nodiscard]] Expected<MachineDIExpression> parseExpression();
[[nodiscard]] Expected<void> parseDILocation(std::vector<MachineDILocationFrame> &Frames,
std::optional<MachineMetadataReference> &Terminal);
MILexer Lexer;
Resolver Resolve;
std::vector<MIToken> Tokens;
std::size_t Position = 0;
};
} // namespace rcc::mir
#endif // RCC_LIB_MIR_MIRMETADATATEXTPARSER_H
|
