100 lines
3.1 KiB
C++
100 lines
3.1 KiB
C++
#pragma once
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#include "Helpers.h"
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#include "SfzHelpers.h"
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#include "Defaults.h"
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#include "Range.h"
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#include <string_view>
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#include <optional>
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// charconv support is still sketchy with clang/gcc so we use abseil's numbers
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#include "absl/strings/numbers.h"
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namespace sfz
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{
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struct Opcode
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{
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Opcode() = delete;
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Opcode(std::string_view inputOpcode, std::string_view inputValue);
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std::string_view opcode{};
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std::string_view value{};
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// This is to handle the integer parameter of some opcodes
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std::optional<uint8_t> parameter;
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};
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template<class ValueType>
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inline std::optional<ValueType> readOpcode(std::string_view value, const Range<ValueType>& validRange)
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{
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if constexpr(std::is_integral<ValueType>::value)
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{
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int64_t returnedValue;
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if (!absl::SimpleAtoi(value, &returnedValue))
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return {};
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if (returnedValue > std::numeric_limits<ValueType>::max())
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returnedValue = std::numeric_limits<ValueType>::max();
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if (returnedValue < std::numeric_limits<ValueType>::min())
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returnedValue = std::numeric_limits<ValueType>::min();
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return validRange.clamp(static_cast<ValueType>(returnedValue));
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}
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else
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{
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float returnedValue;
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if (!absl::SimpleAtof(value, &returnedValue))
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return std::nullopt;
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return validRange.clamp(returnedValue);
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}
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}
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template<class ValueType>
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inline void setValueFromOpcode(const Opcode& opcode, ValueType& target, const Range<ValueType>& validRange)
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{
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auto value = readOpcode(opcode.value, validRange);
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if (!value) // Try and read a note rather than a number
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value = readNoteValue(opcode.value);
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if (value)
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target = *value;
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}
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template<class ValueType>
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inline void setValueFromOpcode(const Opcode& opcode, std::optional<ValueType>& target, const Range<ValueType>& validRange)
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{
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auto value = readOpcode(opcode.value, validRange);
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if (!value) // Try and read a note rather than a number
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value = readNoteValue(opcode.value);
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if (value)
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target = *value;
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}
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template<class ValueType>
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inline void setRangeEndFromOpcode(const Opcode& opcode, Range<ValueType>& target, const Range<ValueType>& validRange)
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{
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auto value = readOpcode(opcode.value, validRange);
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if (!value) // Try and read a note rather than a number
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value = readNoteValue(opcode.value);
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if (value)
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target.setEnd(*value);
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}
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template<class ValueType>
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inline void setRangeStartFromOpcode(const Opcode& opcode, Range<ValueType>& target, const Range<ValueType>& validRange)
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{
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auto value = readOpcode(opcode.value, validRange);
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if (!value) // Try and read a note rather than a number
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value = readNoteValue(opcode.value);
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if (value)
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target.setStart(*value);
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}
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template<class ValueType>
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inline void setCCPairFromOpcode(const Opcode& opcode, std::optional<CCValuePair>& target, const Range<ValueType>& validRange)
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{
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auto value = readOpcode(opcode.value, validRange);
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if (value && opcode.parameter && Default::ccRange.containsWithEnd(*opcode.parameter))
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target = std::make_pair(*opcode.parameter, *value);
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else
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target = {};
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}
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}
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