make a common lib for non-intcode problems
This commit is contained in:
@@ -1,2 +1,2 @@
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add_library(intcode src/Coord.cpp src/Parser.cpp src/Interpreter.cpp src/Machine.cpp src/Startup.cpp)
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target_include_directories(intcode PUBLIC include)
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add_library(aocpp src/Startup.cpp src/Coord.cpp)
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target_include_directories(aocpp PUBLIC include)
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@@ -1,7 +0,0 @@
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#ifndef OVERLOAD_HPP_
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#define OVERLOAD_HPP_
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template <class... Ts> struct overloaded : Ts... { using Ts::operator()...; };
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template <class... Ts> overloaded(Ts...) -> overloaded<Ts...>;
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#endif
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@@ -1,14 +1,12 @@
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#ifndef INTCODE_COORD_HPP_
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#define INTCODE_COORD_HPP_
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#ifndef AOCPP_COORD_HPP_
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#define AOCPP_COORD_HPP_
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#include <functional>
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#include <map>
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#include <ostream>
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#include <tuple>
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#include <intcode/Machine.hpp>
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namespace intcode {
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namespace aocpp {
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/// Cartesian coordinate
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///
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@@ -19,7 +17,7 @@ struct Coord {
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};
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auto Draw(std::ostream & out, std::map<Coord, ValueType> image) -> void;
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auto Draw(std::ostream & out, std::map<Coord, std::int64_t> image) -> void;
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/// Move one unit up
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auto Up(Coord) -> Coord;
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@@ -60,9 +58,9 @@ auto operator<<(std::ostream &, Coord) -> std::ostream &;
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} // namespace
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template<>
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struct std::hash<intcode::Coord>
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struct std::hash<aocpp::Coord>
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{
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auto operator()(intcode::Coord const& c) const noexcept -> std::size_t {
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auto operator()(aocpp::Coord const& c) const noexcept -> std::size_t {
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std::hash<std::int64_t> h;
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return h(c.x) ^ h(c.y);
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}
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10
lib/include/aocpp/Startup.hpp
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10
lib/include/aocpp/Startup.hpp
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@@ -0,0 +1,10 @@
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#ifndef AOCPP_STARTUP_HPP_
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#define AOCPP_STARTUP_HPP_
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#include <fstream>
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namespace aocpp {
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auto Startup(int argc, char ** argv) -> std::ifstream;
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}
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#endif
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@@ -1,51 +0,0 @@
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#ifndef INTCODE_INTERPRETER_HPP_
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#define INTCODE_INTERPRETER_HPP_
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#include <variant>
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#include <concepts>
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#include <intcode/Machine.hpp>
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#include <Overload.hpp>
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namespace intcode {
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struct Input {
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ValueType &input;
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};
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struct Output {
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ValueType output;
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};
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struct Halt {};
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auto StepInput(Machine & m, ValueType input) -> void;
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auto StepOutput(Machine & m) -> ValueType;
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auto Step(Machine & m) -> std::variant<Input, Output, Halt>;
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struct BadInstruction : public std::runtime_error {
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explicit BadInstruction(char const* what);
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};
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template <std::invocable<ValueType&> Fin, std::invocable<ValueType> Fout, std::invocable<> Fhalt>
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auto Advance(Machine & machine, Fin input, Fout output, Fhalt halt) {
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return std::visit(overloaded{
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[&](Halt) { return halt(); },
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[&](Input i) { return input(i.input); },
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[&](Output o) { return output(o.output); },
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}, Step(machine));
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}
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template <std::invocable<> Fin, std::invocable<ValueType> Fout>
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auto Run(Machine & machine, Fin input, Fout output) -> void {
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while (Advance(machine,
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[&](ValueType &i) { i = input(); return true; },
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[&](ValueType o) { output(o); return true; },
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[]() { return false; }
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)) {}
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}
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} // namespace
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#endif
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@@ -1,39 +0,0 @@
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#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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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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explicit Machine(std::vector<ValueType> ram);
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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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@@ -1,15 +0,0 @@
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#ifndef INTCODE_PARSER_HPP_
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#define INTCODE_PARSER_HPP_
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#include <istream>
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#include <vector>
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#include "Machine.hpp"
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namespace intcode {
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auto ParseStream(std::istream &in) -> std::vector<ValueType>;
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} // namespace
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#endif
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@@ -1,10 +0,0 @@
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#ifndef INTCODE_INTCODE_HPP_
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#define INTCODE_INTCODE_HPP_
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#include <intcode/Interpreter.hpp>
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#include <intcode/Machine.hpp>
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#include <intcode/Parser.hpp>
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#include <intcode/Startup.hpp>
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#include <Overload.hpp>
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#endif
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@@ -1,9 +1,9 @@
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#include <intcode/Coord.hpp>
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#include <aocpp/Coord.hpp>
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namespace intcode {
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namespace aocpp {
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auto Draw(std::ostream & out, std::map<Coord, ValueType> image) -> void {
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ValueType minX = 0, maxX = 0, minY = 0, maxY = 0;
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auto Draw(std::ostream & out, std::map<Coord, std::int64_t> image) -> void {
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std::int64_t minX = 0, maxX = 0, minY = 0, maxY = 0;
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for (auto&& [k, _] : image) {
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auto [x,y] = k;
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minX = std::min(minX, x);
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@@ -11,8 +11,8 @@ auto Draw(std::ostream & out, std::map<Coord, ValueType> image) -> void {
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minY = std::min(minY, y);
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maxY = std::max(maxY, y);
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}
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for (ValueType y = minY; y <= maxY; y++) {
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for (ValueType x = minX; x <= maxX; x++) {
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for (std::int64_t y = minY; y <= maxY; y++) {
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for (std::int64_t x = minX; x <= maxX; x++) {
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auto it = image.find({x,y});
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if (image.end() == it) {
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out << "░";
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@@ -1,93 +0,0 @@
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#include <intcode/Interpreter.hpp>
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namespace intcode {
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BadInstruction::BadInstruction(char const* what)
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: std::runtime_error{what} {}
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auto StepInput(Machine & m, ValueType input) -> void {
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std::get<Input>(Step(m)).input = input;
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}
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auto StepOutput(Machine & m) -> ValueType {
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return std::get<Output>(Step(m)).output;
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}
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auto Step(Machine & m) -> std::variant<Input, Output, Halt> {
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for (;;) {
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auto instruction = m.Next();
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auto modes = instruction / 10;
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auto arg = [&]() -> ValueType & {
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auto &v = m.Next();
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switch ((modes /= 10) % 10) {
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case 0:
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return m.At(v);
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case 1:
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return v;
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case 2:
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return m.Rel(v);
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default:
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throw BadInstruction{"invalid addressing mode"};
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}
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};
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switch (instruction % 100) {
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case 1: {
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arg() = arg() + arg();
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break;
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}
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case 2: {
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arg() = arg() * arg();
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break;
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}
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case 3: {
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return Input{arg()};
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}
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case 4: {
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return Output{arg()};
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}
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case 5: {
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auto a = arg();
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auto b = arg();
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if (a) { m.Goto(b); }
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break;
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}
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case 6: {
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auto a = arg();
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auto b = arg();
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if (!a) { m.Goto(b); }
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break;
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}
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case 7: {
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auto a = arg();
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auto b = arg();
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arg() = a < b; // order matters
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break;
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}
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case 8: {
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arg() = arg() == arg();
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break;
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}
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case 9:
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m.Rebase(arg());
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break;
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case 99:
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return Halt{};
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default:
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throw BadInstruction{"invalid opcode"};
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}
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}
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}
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} // namespace
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@@ -1,30 +0,0 @@
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#include <intcode/Machine.hpp>
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namespace intcode {
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Machine::Machine() : rom_{}, ram_{}, pc_{0}, base_{0} {}
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Machine::Machine(std::vector<ValueType> ram)
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: rom_{ram}, ram_{}, pc_{0}, base_{0} {}
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auto Machine::At(std::size_t i) -> ValueType & {
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return i < rom_.size() ? rom_[i] : ram_[i];
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}
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auto Machine::Rel(std::size_t i) -> ValueType & {
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return At(base_ + i);
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}
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auto Machine::Rebase(std::size_t offset) -> void {
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base_ += offset;
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}
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auto Machine::Next() -> ValueType & {
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return At(pc_++);
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}
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auto Machine::Goto(std::size_t address) -> void {
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pc_ = address;
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}
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} // namespace
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@@ -1,17 +0,0 @@
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#include <intcode/Parser.hpp>
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#include <iostream>
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namespace intcode {
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auto ParseStream(std::istream &in) -> std::vector<ValueType> {
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ValueType x;
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std::string str;
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std::vector<ValueType> result;
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while (std::getline(in, str, ',')) {
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result.push_back(std::stol(str));
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}
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return result;
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}
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} // namespace
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17
lib/src/Startup.cpp
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17
lib/src/Startup.cpp
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@@ -0,0 +1,17 @@
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#include <aocpp/Startup.hpp>
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#include <cstdlib>
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#include <iostream>
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#include <fstream>
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namespace aocpp {
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auto Startup(int argc, char ** argv) -> std::ifstream {
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if (argc != 2) {
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std::cerr << "Expected input file argument\n";
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exit(EXIT_FAILURE);
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}
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return std::ifstream{argv[1]};
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}
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}
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