fe4608386e
"nextpnr.h" is no longer the god header. Important improvements: - Functions in log.h can be used without including BaseCtx/Arch/Context. This means that log_X functions can be called without included "nextpnr.h" - NPNR_ASSERT can be used without including "nextpnr.h" by including "nextpnr_assertions.h". This allows NPNR_ASSERT to be used safely in any header file. - Types defined in "archdefs.h" are now available without including BaseCtx/Arch/Context. This means that utility classes that will be used inside of BaseCtx/Arch/Context can be defined safely in a self-contained header. Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
71 lines
2.4 KiB
C++
71 lines
2.4 KiB
C++
/*
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* nextpnr -- Next Generation Place and Route
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*
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* Copyright (C) 2021 The SymbiFlow Authors.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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#ifndef CONSTRAINTS_H
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#define CONSTRAINTS_H
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#include <cstdint>
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#include <unordered_map>
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#include <vector>
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#include "archdefs.h"
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#include "exclusive_state_groups.h"
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#include "idstring.h"
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#include "nextpnr_namespaces.h"
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NEXTPNR_NAMESPACE_BEGIN
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struct Context;
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template <std::size_t StateCount, typename StateType = int8_t, typename CountType = uint8_t> struct Constraints
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{
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using ConstraintStateType = StateType;
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using ConstraintCountType = CountType;
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enum ConstraintType
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{
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CONSTRAINT_TAG_IMPLIES = 0,
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CONSTRAINT_TAG_REQUIRES = 1,
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};
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template <typename StateRange> struct Constraint
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{
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virtual std::size_t tag() const = 0;
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virtual ConstraintType constraint_type() const = 0;
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virtual StateType state() const = 0;
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virtual StateRange states() const = 0;
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};
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typedef ExclusiveStateGroup<StateCount, StateType, CountType> TagState;
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std::unordered_map<uint32_t, std::vector<typename TagState::Definition>> definitions;
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template <typename ConstraintRange> void bindBel(TagState *tags, const ConstraintRange constraints);
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template <typename ConstraintRange> void unbindBel(TagState *tags, const ConstraintRange constraints);
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template <typename ConstraintRange>
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bool isValidBelForCellType(const Context *ctx, uint32_t prototype, const TagState *tags,
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const ConstraintRange constraints, IdString object, IdString cell, BelId bel,
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bool explain_constraints) const;
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};
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NEXTPNR_NAMESPACE_END
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#endif
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