mirror of
https://github.com/dolphin-emu/dolphin
synced 2024-11-21 21:04:05 -05:00
125 lines
3 KiB
C++
125 lines
3 KiB
C++
// Copyright 2023 Dolphin Emulator Project
|
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
|
|
#pragma once
|
|
|
|
#include <optional>
|
|
#include <string>
|
|
#include <string_view>
|
|
|
|
#include "Common/Assembler/AssemblerShared.h"
|
|
#include "Common/Assembler/GekkoLexer.h"
|
|
#include "Common/CommonTypes.h"
|
|
|
|
namespace Common::GekkoAssembler::detail
|
|
{
|
|
class ParsePlugin;
|
|
|
|
struct ParseState
|
|
{
|
|
ParseState(std::string_view input_str, ParsePlugin& plugin);
|
|
|
|
bool HasToken(TokenType tp) const;
|
|
void ParseToken(TokenType tp);
|
|
void EmitErrorHere(std::string&& message);
|
|
|
|
Lexer lexer;
|
|
ParsePlugin& plugin;
|
|
|
|
std::optional<AssemblerError> error;
|
|
bool eof;
|
|
};
|
|
|
|
enum class AsmOp
|
|
{
|
|
Or,
|
|
Xor,
|
|
And,
|
|
Lsh,
|
|
Rsh,
|
|
Add,
|
|
Sub,
|
|
Mul,
|
|
Div,
|
|
Neg,
|
|
Not
|
|
};
|
|
|
|
enum class Terminal
|
|
{
|
|
Hex,
|
|
Dec,
|
|
Oct,
|
|
Bin,
|
|
Flt,
|
|
Str,
|
|
Id,
|
|
GPR,
|
|
FPR,
|
|
SPR,
|
|
CRField,
|
|
Lt,
|
|
Gt,
|
|
Eq,
|
|
So,
|
|
Dot,
|
|
};
|
|
|
|
enum class ParenType
|
|
{
|
|
Normal,
|
|
RelConv,
|
|
};
|
|
|
|
// Overridable plugin class supporting a series of skeleton functions which get called when
|
|
// the parser parses a given point of interest
|
|
class ParsePlugin
|
|
{
|
|
public:
|
|
ParsePlugin() : m_owner(nullptr) {}
|
|
virtual ~ParsePlugin() = default;
|
|
|
|
void SetOwner(ParseState* o) { m_owner = o; }
|
|
void ForwardError(AssemblerError&& err) { m_owner_error = std::move(err); }
|
|
std::optional<AssemblerError>& Error() { return m_owner_error; }
|
|
|
|
virtual void PostParseAction() {}
|
|
|
|
// Nonterminal callouts
|
|
// Pre occurs prior to the head nonterminal being parsed
|
|
// Post occurs after the nonterminal has been fully parsed
|
|
virtual void OnDirectivePre(GekkoDirective directive) {}
|
|
virtual void OnDirectivePost(GekkoDirective directive) {}
|
|
virtual void OnInstructionPre(const ParseInfo& mnemonic_info, bool extended) {}
|
|
virtual void OnInstructionPost(const ParseInfo& mnemonic_info, bool extended) {}
|
|
virtual void OnOperandPre() {}
|
|
virtual void OnOperandPost() {}
|
|
virtual void OnResolvedExprPre() {}
|
|
virtual void OnResolvedExprPost() {}
|
|
|
|
// Operator callouts
|
|
// All occur after the relevant operands have been parsed
|
|
virtual void OnOperator(AsmOp operation) {}
|
|
|
|
// Individual token callouts
|
|
// All occur prior to the token being parsed
|
|
// Due to ambiguity of some tokens, an explicit operation is provided
|
|
virtual void OnTerminal(Terminal type, const AssemblerToken& val) {}
|
|
virtual void OnHiaddr(std::string_view id) {}
|
|
virtual void OnLoaddr(std::string_view id) {}
|
|
virtual void OnOpenParen(ParenType type) {}
|
|
virtual void OnCloseParen(ParenType type) {}
|
|
virtual void OnError() {}
|
|
virtual void OnLabelDecl(std::string_view name) {}
|
|
virtual void OnVarDecl(std::string_view name) {}
|
|
|
|
protected:
|
|
ParseState* m_owner;
|
|
std::optional<AssemblerError> m_owner_error;
|
|
};
|
|
|
|
// Parse the provided input with a plugin to handle what to do with certain points of interest
|
|
// e.g. Convert to an IR for generating final machine code, picking up syntactical information
|
|
void ParseWithPlugin(ParsePlugin* plugin, std::string_view input);
|
|
} // namespace Common::GekkoAssembler::detail
|