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306a2f8381
This CL extends the WGSL writer to output IdentiferExpression and fills out the variable with initializer test case and implementation. Bug: tint:4 Change-Id: I9db9affb5ec4c4c109488f60bbc81bf3a96eee35 Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/16744 Reviewed-by: David Neto <dneto@google.com>
104 lines
3.1 KiB
C++
104 lines
3.1 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_WRITER_WGSL_GENERATOR_IMPL_H_
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#define SRC_WRITER_WGSL_GENERATOR_IMPL_H_
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#include <sstream>
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#include <string>
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#include "src/ast/entry_point.h"
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#include "src/ast/import.h"
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#include "src/ast/module.h"
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#include "src/ast/type/alias_type.h"
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#include "src/ast/type/type.h"
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#include "src/ast/variable.h"
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namespace tint {
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namespace writer {
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namespace wgsl {
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/// Implementation class for WGSL generator
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class GeneratorImpl {
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public:
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/// Constructor
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GeneratorImpl();
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~GeneratorImpl();
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/// Generates the result data
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/// @param module the module to generate
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/// @returns true on successful generation; false otherwise
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bool Generate(const ast::Module& module);
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/// @returns the result data
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std::string result() const { return out_.str(); }
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/// @returns the error from the generator
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std::string error() const { return error_; }
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/// Increment the emitter indent level
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void increment_indent() { indent_ += 2; }
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/// Decrement the emiter indent level
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void decrement_indent() {
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if (indent_ < 2) {
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indent_ = 0;
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return;
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}
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indent_ -= 2;
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}
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/// Writes the current indent to the output stream
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void make_indent();
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/// Handles generating an alias
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/// @param alias the alias to generate
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/// @returns true if the alias was emitted
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bool EmitAliasType(const ast::type::AliasType* alias);
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/// Handles generating an entry_point command
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/// @param ep the entry point
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/// @returns true if the entry point was emitted
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bool EmitEntryPoint(const ast::EntryPoint* ep);
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/// Handles generate an Expression
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/// @param expr the expression
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/// @returns true if the expression was emitted
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bool EmitExpression(ast::Expression* expr);
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/// Handles generating an import command
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/// @param import the import to generate
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/// @returns true if the import was emitted
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bool EmitImport(const ast::Import* import);
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/// Handles generating type
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/// @param type the type to generate
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/// @returns true if the type is emitted
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bool EmitType(ast::type::Type* type);
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/// Handles generating a variable
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/// @param var the variable to generate
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/// @returns true if the variable was emitted
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bool EmitVariable(ast::Variable* var);
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/// Handles generating variable decorations
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/// @param var the decorated variable
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/// @returns true if the variable decoration was emitted
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bool EmitVariableDecorations(ast::DecoratedVariable* var);
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private:
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size_t indent_ = 0;
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std::ostringstream out_;
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std::string error_;
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};
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} // namespace wgsl
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} // namespace writer
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} // namespace tint
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#endif // SRC_WRITER_WGSL_GENERATOR_IMPL_H_
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