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ed2b97811e
Deep-clones all `Node`s and `Type`s into a new module.
Instead of writing a million standalone tests that'll only ever test the
existing fields of each type, I've opted to write the tests using
wgsl<->ast<->wgsl conversion. This means the tests require the enabling
of TINT_BUILD_WGSL_READER and TINT_BUILD_WGSL_WRITER, but I believe this
is much easier to maintain.
I'm aware there are probably gaps in the tests, and that even full
coverage is likely to rapidly rot, so I've also added
fuzzers/tint_ast_clone_fuzzer.cc - a fuzzer based test that ensures that
all AST modules can be cloned with identical reproduction.
I've run this across 100 cores of a 3990x for 4 hours, fixing the
single issue it detected.
Note: Expressions do not currently clone their `TypeManager` determined
types. This is for two reasons:
(a) This initial CL is mahoosive enough.
(b) I'm uncertain whether we actually want to clone this info, or to
re-run the `TypeDeterminer` after each AST transform. Maybe it should
be optional. Time will tell.
Fixed: tint:307
Change-Id: Id90fab06aaa740c805d12b66f3f11d1f452c6805
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/33300
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: dan sinclair <dsinclair@chromium.org>
Reviewed-by: David Neto <dneto@google.com>
90 lines
2.9 KiB
C++
90 lines
2.9 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_SWITCH_STATEMENT_H_
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#define SRC_AST_SWITCH_STATEMENT_H_
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#include <memory>
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#include <utility>
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#include "src/ast/case_statement.h"
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#include "src/ast/expression.h"
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#include "src/ast/literal.h"
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#include "src/ast/statement.h"
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namespace tint {
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namespace ast {
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/// A switch statement
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class SwitchStatement : public Castable<SwitchStatement, Statement> {
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public:
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/// Constructor
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SwitchStatement();
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/// Constructor
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/// @param condition the switch condition
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/// @param body the switch body
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SwitchStatement(Expression* condition, CaseStatementList body);
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/// Constructor
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/// @param source the source information
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/// @param condition the switch condition
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/// @param body the switch body
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SwitchStatement(const Source& source,
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Expression* condition,
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CaseStatementList body);
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/// Move constructor
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SwitchStatement(SwitchStatement&&);
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~SwitchStatement() override;
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/// Sets the condition for the switch statement
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/// @param condition the condition to set
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void set_condition(Expression* condition) { condition_ = condition; }
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/// @returns the switch condition or nullptr if none set
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Expression* condition() const { return condition_; }
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/// @returns true if this is a default statement
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bool IsDefault() const { return condition_ == nullptr; }
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/// Sets the switch body
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/// @param body the switch body
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void set_body(CaseStatementList body) { body_ = std::move(body); }
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/// @returns the Switch body
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const CaseStatementList& body() const { return body_; }
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/// Clones this node and all transitive child nodes using the `CloneContext`
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/// `ctx`.
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/// @note Semantic information such as resolved expression type and intrinsic
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/// information is not cloned.
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/// @param ctx the clone context
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/// @return the newly cloned node
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SwitchStatement* Clone(CloneContext* ctx) const override;
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/// @returns true if the node is valid
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bool IsValid() const override;
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/// Writes a representation of the node to the output stream
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/// @param out the stream to write to
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/// @param indent number of spaces to indent the node when writing
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void to_str(std::ostream& out, size_t indent) const override;
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private:
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SwitchStatement(const SwitchStatement&) = delete;
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Expression* condition_ = nullptr;
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CaseStatementList body_;
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};
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} // namespace ast
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} // namespace tint
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#endif // SRC_AST_SWITCH_STATEMENT_H_
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