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Program is now immutable*, and remains part of the public Tint interface. ProgramBuilder is the mutable builder for Programs, and is not part of the public Tint interface. ast::Builder has been folded into ProgramBuilder. Immutable Programs can be cloned into a mutable ProgramBuilder with Program::CloneAsBuilder(). Mutable ProgramBuilders can be moved into immutable Programs. * - mostly immutable. It still has a move constructor and move assignment operator - required for practical usage - and the semantic information on AST nodes is still mutable. Bug: tint:390 Change-Id: Ia856c50b1880c2f95c91467a9eef5024cbc380c6 Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/38240 Reviewed-by: dan sinclair <dsinclair@chromium.org>
117 lines
4.0 KiB
C++
117 lines
4.0 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_TYPE_TYPE_H_
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#define SRC_TYPE_TYPE_H_
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#include <string>
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#include "src/castable.h"
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#include "src/clone_context.h"
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namespace tint {
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// Forward declarations
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class ProgramBuilder;
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namespace type {
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/// Supported memory layouts for calculating sizes
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enum class MemoryLayout { kUniformBuffer, kStorageBuffer };
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/// Base class for a type in the system
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class Type : public Castable<Type> {
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public:
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/// Move constructor
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Type(Type&&);
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~Type() 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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virtual Type* Clone(CloneContext* ctx) const = 0;
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/// @returns the name for this type. The type name is unique over all types.
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virtual std::string type_name() const = 0;
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/// @param mem_layout type of memory layout to use in calculation.
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/// @returns minimum size required for this type, in bytes.
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/// 0 for non-host shareable types.
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virtual uint64_t MinBufferBindingSize(MemoryLayout mem_layout) const;
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/// @param mem_layout type of memory layout to use in calculation.
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/// @returns base alignment for the type, in bytes.
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/// 0 for non-host shareable types.
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virtual uint64_t BaseAlignment(MemoryLayout mem_layout) const;
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/// @returns the pointee type if this is a pointer, `this` otherwise
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Type* UnwrapPtrIfNeeded();
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/// Removes all levels of aliasing and access control.
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/// This is just enough to assist with WGSL translation
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/// in that you want see through one level of pointer to get from an
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/// identifier-like expression as an l-value to its corresponding r-value,
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/// plus see through the wrappers on either side.
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/// @returns the completely unaliased type.
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Type* UnwrapIfNeeded();
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/// Returns the type found after:
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/// - removing all layers of aliasing and access control if they exist, then
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/// - removing the pointer, if it exists, then
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/// - removing all further layers of aliasing or access control, if they exist
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/// @returns the unwrapped type
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Type* UnwrapAll();
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/// @returns true if this type is a scalar
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bool is_scalar();
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/// @returns true if this type is a float scalar
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bool is_float_scalar();
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/// @returns true if this type is a float matrix
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bool is_float_matrix();
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/// @returns true if this type is a float vector
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bool is_float_vector();
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/// @returns true if this type is a float scalar or vector
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bool is_float_scalar_or_vector();
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/// @returns ture if this type is an integer scalar
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bool is_integer_scalar();
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/// @returns true if this type is a signed integer vector
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bool is_signed_integer_vector();
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/// @returns true if this type is an unsigned vector
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bool is_unsigned_integer_vector();
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/// @returns true if this type is an unsigned scalar or vector
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bool is_unsigned_scalar_or_vector();
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/// @returns true if this type is a signed scalar or vector
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bool is_signed_scalar_or_vector();
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/// @returns true if this type is an integer scalar or vector
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bool is_integer_scalar_or_vector();
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protected:
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Type();
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/// A helper method for cloning the `Type` `t` if it is not null.
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/// If `t` is null, then `Clone()` returns null.
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/// @param b the program builder to clone `n` into
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/// @param t the `Type` to clone (if not null)
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/// @return the cloned type
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template <typename T>
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static T* Clone(ProgramBuilder* b, const T* t) {
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return (t != nullptr) ? static_cast<T*>(t->Clone(b)) : nullptr;
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}
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};
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} // namespace type
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} // namespace tint
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#endif // SRC_TYPE_TYPE_H_
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