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/*
* Copyright (C) 2022 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "ASTNode.h"
#include <wtf/text/StringView.h>
#include <wtf/UniqueRef.h>
#include <wtf/Vector.h>
namespace WGSL::AST {
class Attribute : public ASTNode {
WTF_MAKE_FAST_ALLOCATED;
public:
enum class Kind {
Group,
Binding,
Stage,
Location,
Builtin,
};
Attribute(SourceSpan span)
: ASTNode(span)
{
}
virtual ~Attribute() {};
virtual Kind kind() const = 0 ;
bool isGroup() const { return kind() == Kind::Group; }
bool isBinding() const { return kind() == Kind::Binding; }
bool isStage() const { return kind() == Kind::Stage; }
bool isLocation() const { return kind() == Kind::Location; }
bool isBuiltin() const { return kind() == Kind::Builtin; }
};
class GroupAttribute final : public Attribute {
WTF_MAKE_FAST_ALLOCATED;
public:
GroupAttribute(SourceSpan span, unsigned group)
: Attribute(span)
, m_value(group)
{
}
Kind kind() const override { return Kind::Group; }
unsigned group() const { return m_value; }
private:
unsigned m_value;
};
class BindingAttribute final : public Attribute {
WTF_MAKE_FAST_ALLOCATED;
public:
BindingAttribute(SourceSpan span, unsigned binding)
: Attribute(span)
, m_value(binding)
{
}
Kind kind() const override { return Kind::Binding; }
unsigned binding() const { return m_value; }
private:
unsigned m_value;
};
class StageAttribute final : public Attribute {
WTF_MAKE_FAST_ALLOCATED;
public:
enum class Stage : uint8_t {
Compute,
Vertex,
Fragment
};
StageAttribute(SourceSpan span, Stage stage)
: Attribute(span)
, m_stage(stage)
{
}
Kind kind() const override { return Kind::Stage; }
Stage stage() const { return m_stage; }
private:
Stage m_stage;
};
class BuiltinAttribute final : public Attribute {
WTF_MAKE_FAST_ALLOCATED;
public:
BuiltinAttribute(SourceSpan span, StringView name)
: Attribute(span)
, m_name(name)
{
}
Kind kind() const override { return Kind::Builtin; }
const StringView& name() const { return m_name; }
private:
StringView m_name;
};
class LocationAttribute final : public Attribute {
WTF_MAKE_FAST_ALLOCATED;
public:
LocationAttribute(SourceSpan span, unsigned value)
: Attribute(span)
, m_value(value)
{
}
Kind kind() const override { return Kind::Location; }
unsigned location() const { return m_value; }
private:
unsigned m_value;
};
using Attributes = Vector<UniqueRef<Attribute>, 2>;
} // namespace WGSL::AST
#define SPECIALIZE_TYPE_TRAITS_WGSL_ATTRIBUTE(ToValueTypeName, predicate) \
SPECIALIZE_TYPE_TRAITS_BEGIN(WGSL::AST::ToValueTypeName) \
static bool isType(const WGSL::AST::Attribute& attr) { return attr.predicate; } \
SPECIALIZE_TYPE_TRAITS_END()
SPECIALIZE_TYPE_TRAITS_WGSL_ATTRIBUTE(GroupAttribute, isGroup())
SPECIALIZE_TYPE_TRAITS_WGSL_ATTRIBUTE(BindingAttribute, isBinding())
SPECIALIZE_TYPE_TRAITS_WGSL_ATTRIBUTE(StageAttribute, isStage())
SPECIALIZE_TYPE_TRAITS_WGSL_ATTRIBUTE(LocationAttribute, isLocation())
SPECIALIZE_TYPE_TRAITS_WGSL_ATTRIBUTE(BuiltinAttribute, isBuiltin())
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