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60 lines
1.7 KiB
C++
60 lines
1.7 KiB
C++
// SPDX-License-Identifier: MIT
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#ifndef RGBDS_ASM_RPN_HPP
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#define RGBDS_ASM_RPN_HPP
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#include <stdint.h>
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#include <string>
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#include <variant>
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#include <vector>
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#include "linkdefs.hpp"
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struct Symbol;
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struct RPNValue {
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RPNCommand command; // The RPN_* command ID
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std::variant<std::monostate, uint8_t, uint32_t, std::string> data; // Data after the ID, if any
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void appendEncoded(std::vector<uint8_t> &buffer) const;
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};
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struct Expression {
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std::variant<
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int32_t, // If the expression's value is known, it's here
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std::string // Why the expression is not known, if it isn't
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>
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data = 0;
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std::vector<RPNValue> rpn{}; // Values to be serialized into the RPN expression
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bool isKnown() const { return std::holds_alternative<int32_t>(data); }
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int32_t value() const { return std::get<int32_t>(data); }
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int32_t getConstVal() const;
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Symbol const *symbolOf() const;
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bool isDiffConstant(Symbol const *symName) const;
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void makeNumber(uint32_t value);
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void makeSymbol(std::string const &symName);
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void makeBankSymbol(std::string const &symName);
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void makeBankSection(std::string const §Name);
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void makeSizeOfSection(std::string const §Name);
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void makeStartOfSection(std::string const §Name);
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void makeSizeOfSectionType(SectionType type);
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void makeStartOfSectionType(SectionType type);
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void makeUnaryOp(RPNCommand op, Expression &&src);
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void makeBinaryOp(RPNCommand op, Expression &&src1, Expression const &src2);
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void addCheckHRAM();
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void addCheckRST();
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void addCheckBitIndex(uint8_t mask);
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void checkNBit(uint8_t n) const;
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void encode(std::vector<uint8_t> &buffer) const;
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};
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bool checkNBit(int32_t v, uint8_t n, char const *name);
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#endif // RGBDS_ASM_RPN_HPP
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