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144 lines
3.2 KiB
C
144 lines
3.2 KiB
C
// Copyright (c) 2021 Christoffer Lerno. All rights reserved.
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// Use of this source code is governed by the MIT license
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// a copy of which can be found in the LICENSE_STDLIB file.
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/**
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* @require Enum.kindof == TypeKind.ENUM : "Only enums maybe be used with an enumset"
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**/
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module std::collections::enumset<Enum>;
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$if (Enum.elements > 128):
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typedef EnumSetType @private = char[(Enum.elements + 7) / 8];
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const IS_CHAR_ARRAY = true;
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$elif (Enum.elements > 64):
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typedef EnumSetType @private = uint128;
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const IS_CHAR_ARRAY = false;
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$elif (Enum.elements > 32 || $$C_INT_SIZE > 32):
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typedef EnumSetType @private = ulong;
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const IS_CHAR_ARRAY = false;
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$elif (Enum.elements > 16 || $$C_INT_SIZE > 16):
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typedef EnumSetType @private = uint;
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const IS_CHAR_ARRAY = false;
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$elif (Enum.elements > 8 || $$C_INT_SIZE > 8):
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typedef EnumSetType @private = ushort;
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const IS_CHAR_ARRAY = false;
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$else:
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typedef EnumSetType @private = char;
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const IS_CHAR_ARRAY = false;
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$endif;
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typedef EnumSet = distinct EnumSetType;
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fn void EnumSet.add(EnumSet* this, Enum v)
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{
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$if (IS_CHAR_ARRAY):
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(*this)[v / 8] |= (char)(1u << (v % 8));
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$else:
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*this = (EnumSet)((EnumSetType)*this | 1u << (EnumSetType)v);
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$endif;
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}
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fn void EnumSet.clear(EnumSet* this)
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{
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$if (IS_CHAR_ARRAY):
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*this = {};
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$else:
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*this = 0;
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$endif;
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}
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fn bool EnumSet.remove(EnumSet* this, Enum v)
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{
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$if (IS_CHAR_ARRAY):
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if (!this.has(v) @inline) return false;
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(*this)[v / 8] &= (char)~(1 << (v % 8));
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return true;
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$else:
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EnumSetType old = (EnumSetType)*this;
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EnumSetType new = old & ~(1u << (EnumSetType)v);
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*this = (EnumSet)new;
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return old != new;
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$endif;
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}
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fn bool EnumSet.has(EnumSet* this, Enum v)
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{
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$if (IS_CHAR_ARRAY):
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return (bool)(((*this)[v / 8] << (v % 8)) & 0x01);
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$else:
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return ((EnumSetType)*this & (1u << (EnumSetType)v)) != 0;
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$endif;
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}
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fn void EnumSet.add_all(EnumSet* this, EnumSet s)
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{
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$if (IS_CHAR_ARRAY):
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foreach (i, c : s) (*this)[i] |= c;
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$else:
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*this = (EnumSet)((EnumSetType)*this | (EnumSetType)s);
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$endif;
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}
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fn void EnumSet.retain_all(EnumSet* this, EnumSet s)
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{
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$if (IS_CHAR_ARRAY):
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foreach (i, c : s) (*this)[i] &= c;
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$else:
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*this = (EnumSet)((EnumSetType)*this & (EnumSetType)s);
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$endif;
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}
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fn void EnumSet.remove_all(EnumSet* this, EnumSet s)
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{
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$if (IS_CHAR_ARRAY):
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foreach (i, c : s) (*this)[i] &= ~c;
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$else:
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*this = (EnumSet)((EnumSetType)*this & ~(EnumSetType)s);
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$endif;
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}
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fn EnumSet EnumSet.and_of(EnumSet* this, EnumSet s)
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{
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$if (IS_CHAR_ARRAY):
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EnumSet copy = *this;
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copy.retain_all(s);
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return copy;
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$else:
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return (EnumSet)((EnumSetType)*this & (EnumSetType)s);
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$endif;
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}
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fn EnumSet EnumSet.or_of(EnumSet* this, EnumSet s)
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{
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$if (IS_CHAR_ARRAY):
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EnumSet copy = *this;
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copy.add_all(s);
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return copy;
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$else:
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return (EnumSet)((EnumSetType)*this | (EnumSetType)s);
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$endif;
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}
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fn EnumSet EnumSet.diff_of(EnumSet* this, EnumSet s)
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{
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$if (IS_CHAR_ARRAY):
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EnumSet copy = *this;
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copy.remove_all(s);
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return copy;
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$else:
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return (EnumSet)((EnumSetType)*this & ~(EnumSetType)s);
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$endif;
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}
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fn EnumSet EnumSet.xor_of(EnumSet* this, EnumSet s)
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{
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$if (IS_CHAR_ARRAY):
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EnumSet copy = *this;
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foreach (i, c : s) copy[i] ^= c;
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return copy;
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$else:
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return (EnumSet)((EnumSetType)*this ^ (EnumSetType)s);
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$endif;
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} |