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// Copyright 2021 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef SRC_TINT_RESOLVER_INTRINSIC_TABLE_H_
#define SRC_TINT_RESOLVER_INTRINSIC_TABLE_H_
#include <memory>
#include <string>
#include "src/tint/ast/binary_expression.h"
#include "src/tint/ast/unary_op.h"
#include "src/tint/resolver/const_eval.h"
#include "src/tint/resolver/ctor_conv_intrinsic.h"
#include "src/tint/sem/builtin.h"
#include "src/tint/utils/vector.h"
// Forward declarations
namespace tint {
class ProgramBuilder;
} // namespace tint
namespace tint::resolver {
/// IntrinsicTable is a lookup table of all the WGSL builtin functions and intrinsic operators
class IntrinsicTable {
public:
/// @param builder the program builder
/// @return a pointer to a newly created IntrinsicTable
static std::unique_ptr<IntrinsicTable> Create(ProgramBuilder& builder);
/// Destructor
virtual ~IntrinsicTable();
/// Builtin describes a resolved builtin function
struct Builtin {
/// The semantic info for the builtin
const sem::Builtin* sem = nullptr;
/// The constant evaluation function
ConstEval::Function const_eval_fn = nullptr;
};
/// UnaryOperator describes a resolved unary operator
struct UnaryOperator {
/// The result type of the unary operator
const type::Type* result = nullptr;
/// The type of the parameter of the unary operator
const type::Type* parameter = nullptr;
/// The constant evaluation function
ConstEval::Function const_eval_fn = nullptr;
};
/// BinaryOperator describes a resolved binary operator
struct BinaryOperator {
/// The result type of the binary operator
const type::Type* result = nullptr;
/// The type of LHS parameter of the binary operator
const type::Type* lhs = nullptr;
/// The type of RHS parameter of the binary operator
const type::Type* rhs = nullptr;
/// The constant evaluation function
ConstEval::Function const_eval_fn = nullptr;
};
/// CtorOrConv describes a resolved value constructor or conversion
struct CtorOrConv {
/// The result type of the value constructor or conversion
const sem::CallTarget* target = nullptr;
/// The constant evaluation function
ConstEval::Function const_eval_fn = nullptr;
};
/// Lookup looks for the builtin overload with the given signature, raising an error diagnostic
/// if the builtin was not found.
/// @param type the builtin type
/// @param args the argument types passed to the builtin function
/// @param earliest_eval_stage the the earliest evaluation stage that a call to
/// the builtin can be made. This can alter the overloads considered.
/// For example, if the earliest evaluation stage is
/// `sem::EvaluationStage::kRuntime`, then only overloads with concrete argument types
/// will be considered, as all abstract-numerics will have been materialized
/// after shader creation time (sem::EvaluationStage::kConstant).
/// @param source the source of the builtin call
/// @return the semantic builtin if found, otherwise nullptr
virtual Builtin Lookup(builtin::Function type,
utils::VectorRef<const type::Type*> args,
sem::EvaluationStage earliest_eval_stage,
const Source& source) = 0;
/// Lookup looks for the unary op overload with the given signature, raising an error
/// diagnostic if the operator was not found.
/// @param op the unary operator
/// @param arg the type of the expression passed to the operator
/// @param earliest_eval_stage the the earliest evaluation stage that a call to
/// the unary operator can be made. This can alter the overloads considered.
/// For example, if the earliest evaluation stage is
/// `sem::EvaluationStage::kRuntime`, then only overloads with concrete argument types
/// will be considered, as all abstract-numerics will have been materialized
/// after shader creation time (sem::EvaluationStage::kConstant).
/// @param source the source of the operator call
/// @return the operator call target signature. If the operator was not found
/// UnaryOperator::result will be nullptr.
virtual UnaryOperator Lookup(ast::UnaryOp op,
const type::Type* arg,
sem::EvaluationStage earliest_eval_stage,
const Source& source) = 0;
/// Lookup looks for the binary op overload with the given signature, raising an error
/// diagnostic if the operator was not found.
/// @param op the binary operator
/// @param lhs the LHS value type passed to the operator
/// @param rhs the RHS value type passed to the operator
/// @param source the source of the operator call
/// @param earliest_eval_stage the the earliest evaluation stage that a call to
/// the binary operator can be made. This can alter the overloads considered.
/// For example, if the earliest evaluation stage is
/// `sem::EvaluationStage::kRuntime`, then only overloads with concrete argument types
/// will be considered, as all abstract-numerics will have been materialized
/// after shader creation time (sem::EvaluationStage::kConstant).
/// @param is_compound true if the binary operator is being used as a compound assignment
/// @return the operator call target signature. If the operator was not found
/// BinaryOperator::result will be nullptr.
virtual BinaryOperator Lookup(ast::BinaryOp op,
const type::Type* lhs,
const type::Type* rhs,
sem::EvaluationStage earliest_eval_stage,
const Source& source,
bool is_compound) = 0;
/// Lookup looks for the value constructor or conversion overload for the given
/// CtorConvIntrinsic.
/// @param type the type being constructed or converted
/// @param template_arg the optional template argument
/// @param args the argument types passed to the constructor / conversion call
/// @param earliest_eval_stage the the earliest evaluation stage that a call to
/// the constructor or conversion can be made. This can alter the overloads considered.
/// For example, if the earliest evaluation stage is
/// `sem::EvaluationStage::kRuntime`, then only overloads with concrete argument types
/// will be considered, as all abstract-numerics will have been materialized
/// after shader creation time (sem::EvaluationStage::kConstant).
/// @param source the source of the call
/// @return a sem::ValueConstructor, sem::ValueConversion or nullptr if nothing matched
virtual CtorOrConv Lookup(CtorConvIntrinsic type,
const type::Type* template_arg,
utils::VectorRef<const type::Type*> args,
sem::EvaluationStage earliest_eval_stage,
const Source& source) = 0;
};
} // namespace tint::resolver
#endif // SRC_TINT_RESOLVER_INTRINSIC_TABLE_H_