129 lines
4.3 KiB
Objective-C
129 lines
4.3 KiB
Objective-C
//
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// _RX.h
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// RxCocoa
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//
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// Created by Krunoslav Zaher on 7/12/15.
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// Copyright © 2015 Krunoslav Zaher. All rights reserved.
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//
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#import <Foundation/Foundation.h>
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#import <objc/runtime.h>
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/**
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################################################################################
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This file is part of RX private API
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################################################################################
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*/
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#if TRACE_RESOURCES
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# define DLOG(...) NSLog(__VA_ARGS__)
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# define ABORT_IN_DEBUG abort();
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#else
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# define DLOG(...)
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# define ABORT_IN_DEBUG
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#endif
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#define SEL_VALUE(x) [NSValue valueWithPointer:(x)]
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#define CLASS_VALUE(x) [NSValue valueWithNonretainedObject:(x)]
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#define IMP_VALUE(x) [NSValue valueWithPointer:(x)]
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// Inspired by http://p99.gforge.inria.fr
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// https://gcc.gnu.org/onlinedocs/gcc-2.95.3/cpp_1.html#SEC26
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#define RX_CAT2(_1, _2) _RX_CAT2(_1, _2)
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#define RX_ELEMENT_AT(n, ...) RX_CAT2(_RX_ELEMENT_AT_, n)(__VA_ARGS__)
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#define RX_COUNT(...) RX_ELEMENT_AT(6, ## __VA_ARGS__, 6, 5, 4, 3, 2, 1, 0)
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/**
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#define JOIN(context, index, head, tail) head; tail
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#define APPLY(context, index, item) item = (context)[index]
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RX_FOR(A, JOIN, APPLY, toto, tutu);
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toto = (A)[0]; tutu = (A)[1];
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*/
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#define RX_FOR(context, join, generate, ...) RX_CAT2( _RX_FOR_, RX_COUNT(__VA_ARGS__))(context, 0, join, generate, ## __VA_ARGS__)
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/**
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#define JOIN(context, index, head, tail) head tail
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#define APPLY(context, index, item) item = (context)[index]
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RX_FOR(A, JOIN, APPLY, toto, tutu);
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, toto = (A)[0], tutu = (A)[1]
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*/
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#define RX_FOR_COMMA(context, generate, ...) RX_CAT2( _RX_FOR_COMMA_, RX_COUNT(__VA_ARGS__))(context, 0, generate, ## __VA_ARGS__)
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#define RX_INC(x) RX_CAT2(_RX_INC_, x)
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// element at
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#define _RX_ELEMENT_AT_0(x, ...) x
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#define _RX_ELEMENT_AT_1(_0, x, ...) x
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#define _RX_ELEMENT_AT_2(_0, _1, x, ...) x
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#define _RX_ELEMENT_AT_3(_0, _1, _2, x, ...) x
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#define _RX_ELEMENT_AT_4(_0, _1, _2, _3, x, ...) x
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#define _RX_ELEMENT_AT_5(_0, _1, _2, _3, _4, x, ...) x
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#define _RX_ELEMENT_AT_6(_0, _1, _2, _3, _4, _5, x, ...) x
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// rx for
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#define _RX_FOR_0(context, index, join, generate)
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#define _RX_FOR_1(context, index, join, generate, head) \
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generate(context, index, head)
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#define _RX_FOR_2(context, index, join, generate, head, ...) \
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join(context, index, generate(context, index, head), _RX_FOR_1(context, RX_INC(index), join, generate, __VA_ARGS__))
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#define _RX_FOR_3(context, index, join, generate, head, ...) \
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join(context, index, generate(context, index, head), _RX_FOR_2(context, RX_INC(index), join, generate, __VA_ARGS__))
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#define _RX_FOR_4(context, index, join, generate, head, ...) \
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join(context, index, generate(context, index, head), _RX_FOR_3(context, RX_INC(index), join, generate, __VA_ARGS__))
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#define _RX_FOR_5(context, index, join, generate, head, ...) \
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join(context, index, generate(context, index, head), _RX_FOR_4(context, RX_INC(index), join, generate, __VA_ARGS__))
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#define _RX_FOR_6(context, index, join, generate, head, ...) \
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join(context, index, generate(context, index, head), _RX_FOR_5(context, RX_INC(index), join, generate, __VA_ARGS__))
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// rx for
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#define _RX_FOR_COMMA_0(context, index, generate)
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#define _RX_FOR_COMMA_1(context, index, generate, head) \
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, generate(context, index, head)
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#define _RX_FOR_COMMA_2(context, index, generate, head, ...) \
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, generate(context, index, head) _RX_FOR_COMMA_1(context, RX_INC(index), generate, __VA_ARGS__)
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#define _RX_FOR_COMMA_3(context, index, generate, head, ...) \
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, generate(context, index, head) _RX_FOR_COMMA_2(context, RX_INC(index), generate, __VA_ARGS__)
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#define _RX_FOR_COMMA_4(context, index, generate, head, ...) \
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, generate(context, index, head) _RX_FOR_COMMA_3(context, RX_INC(index), generate, __VA_ARGS__)
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#define _RX_FOR_COMMA_5(context, index, generate, head, ...) \
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, generate(context, index, head) _RX_FOR_COMMA_4(context, RX_INC(index), generate, __VA_ARGS__)
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#define _RX_FOR_COMMA_6(context, index, generate, head, ...) \
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, generate(context, index, head) _RX_FOR_COMMA_5(context, RX_INC(index), generate, __VA_ARGS__)
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// rx inc
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#define _RX_INC_0 1
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#define _RX_INC_1 2
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#define _RX_INC_2 3
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#define _RX_INC_3 4
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#define _RX_INC_4 5
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#define _RX_INC_5 6
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#define _RX_INC_6 7
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// rx cat
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#define _RX_CAT2(_1, _2) _1 ## _2 |