| // Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| #ifndef RUNTIME_VM_COMPILER_AOT_DISPATCH_TABLE_GENERATOR_H_ |
| #define RUNTIME_VM_COMPILER_AOT_DISPATCH_TABLE_GENERATOR_H_ |
| |
| #include "vm/compiler/frontend/kernel_translation_helper.h" |
| #include "vm/dispatch_table.h" |
| #include "vm/object.h" |
| |
| namespace dart { |
| |
| class ClassTable; |
| class Precompiler; |
| |
| namespace compiler { |
| |
| class SelectorRow; |
| |
| struct TableSelector { |
| int32_t id; |
| int32_t offset; |
| bool on_null_interface; |
| bool requires_args_descriptor; |
| }; |
| |
| class SelectorMap { |
| public: |
| explicit SelectorMap(Zone* zone) : zone_(zone) {} |
| |
| // Get the selector for this interface target, or null if the function does |
| // not have a selector assigned. |
| const TableSelector* GetSelector(const Function& interface_target) const; |
| |
| private: |
| static const int32_t kInvalidSelectorId = |
| kernel::ProcedureAttributesMetadata::kInvalidSelectorId; |
| static const int32_t kInvalidSelectorOffset = -1; |
| |
| int32_t SelectorId(const Function& interface_target) const; |
| |
| void SetSelectorProperties(int32_t sid, |
| bool on_null_interface, |
| bool requires_args_descriptor); |
| void SetSelectorOffset(int32_t sid, int32_t offset); |
| |
| int32_t NumIds() const { return selectors_.length(); } |
| |
| friend class dart::Precompiler; |
| friend class DispatchTableGenerator; |
| friend class SelectorRow; |
| |
| Zone* zone_; |
| GrowableArray<TableSelector> selectors_; |
| }; |
| |
| class DispatchTableGenerator { |
| public: |
| explicit DispatchTableGenerator(Zone* zone); |
| |
| SelectorMap* selector_map() { return &selector_map_; } |
| |
| // Find suitable selectors and compute offsets for them. |
| void Initialize(ClassTable* table); |
| |
| // Build up the table. |
| DispatchTable* BuildTable(); |
| |
| private: |
| void NumberSelectors(); |
| void SetupSelectorRows(); |
| void ComputeSelectorOffsets(); |
| |
| Zone* zone_; |
| ClassTable* classes_; |
| int32_t num_selectors_; |
| int32_t num_classes_; |
| int32_t table_size_; |
| |
| GrowableArray<SelectorRow*> table_rows_; |
| |
| SelectorMap selector_map_; |
| }; |
| |
| } // namespace compiler |
| } // namespace dart |
| |
| #endif // RUNTIME_VM_COMPILER_AOT_DISPATCH_TABLE_GENERATOR_H_ |