77 lines
2.2 KiB
C++
77 lines
2.2 KiB
C++
// Copyright 2020 The Tint Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef SRC_AST_SAMPLER_H_
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#define SRC_AST_SAMPLER_H_
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#include <string>
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#include "src/ast/type.h"
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namespace tint {
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namespace ast {
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/// The different kinds of samplers
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enum class SamplerKind {
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/// A regular sampler
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kSampler,
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/// A comparison sampler
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kComparisonSampler
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};
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/// @param out the std::ostream to write to
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/// @param kind the SamplerKind
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/// @return the std::ostream so calls can be chained
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std::ostream& operator<<(std::ostream& out, SamplerKind kind);
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/// A sampler type.
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class Sampler : public Castable<Sampler, Type> {
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public:
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/// Constructor
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/// @param program_id the identifier of the program that owns this node
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/// @param source the source of this node
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/// @param kind the kind of sampler
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Sampler(ProgramID program_id, const Source& source, SamplerKind kind);
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/// Move constructor
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Sampler(Sampler&&);
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~Sampler() override;
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/// @returns the sampler type
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SamplerKind kind() const { return kind_; }
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/// @returns true if this is a comparison sampler
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bool IsComparison() const { return kind_ == SamplerKind::kComparisonSampler; }
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/// @returns the name for this type
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std::string type_name() const override;
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/// @param symbols the program's symbol table
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/// @returns the name for this type that closely resembles how it would be
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/// declared in WGSL.
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std::string FriendlyName(const SymbolTable& symbols) const override;
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/// Clones this type and all transitive types using the `CloneContext` `ctx`.
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/// @param ctx the clone context
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/// @return the newly cloned type
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Sampler* Clone(CloneContext* ctx) const override;
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private:
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SamplerKind const kind_;
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};
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} // namespace ast
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} // namespace tint
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#endif // SRC_AST_SAMPLER_H_
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