44 lines
1004 B
C++
44 lines
1004 B
C++
#ifndef INTCODE_MACHINE_HPP_
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#define INTCODE_MACHINE_HPP_
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#include <cstddef>
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#include <unordered_map>
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#include <vector>
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#include <iostream>
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namespace intcode {
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using ValueType = std::int64_t;
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class Machine {
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std::vector<ValueType> rom_;
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std::unordered_map<std::size_t, ValueType> ram_;
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std::size_t pc_;
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std::size_t base_;
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public:
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Machine();
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/// Initialize a new machine with a given program starting
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/// execution and program counter 0.
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explicit Machine(std::vector<ValueType> program);
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/// Access memory at absolute address
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/// @param address
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/// @return reference to memory at given address
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auto At(std::size_t address) -> ValueType &;
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/// Access memory at address relative to base pointer
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/// @param offset from base pointer
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/// @return reference to memory at given offset
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auto Rel(std::size_t offset) -> ValueType &;
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auto Next() -> ValueType &;
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auto Goto(std::size_t address) -> void;
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auto Rebase(std::size_t offset) -> void;
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};
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} // namespace
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#endif
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