// Copyright 2016 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "src/interpreter/handler-table-builder.h" #include "src/factory.h" #include "src/isolate.h" #include "src/objects-inl.h" namespace v8 { namespace internal { namespace interpreter { HandlerTableBuilder::HandlerTableBuilder(Isolate* isolate, Zone* zone) : isolate_(isolate), entries_(zone) {} Handle<HandlerTable> HandlerTableBuilder::ToHandlerTable() { int handler_table_size = static_cast<int>(entries_.size()); Handle<HandlerTable> table = Handle<HandlerTable>::cast(isolate_->factory()->NewFixedArray( HandlerTable::LengthForRange(handler_table_size), TENURED)); for (int i = 0; i < handler_table_size; ++i) { Entry& entry = entries_[i]; HandlerTable::CatchPrediction pred = entry.will_catch ? HandlerTable::CAUGHT : HandlerTable::UNCAUGHT; table->SetRangeStart(i, static_cast<int>(entry.offset_start)); table->SetRangeEnd(i, static_cast<int>(entry.offset_end)); table->SetRangeHandler(i, static_cast<int>(entry.offset_target), pred); table->SetRangeData(i, entry.context.index()); } return table; } int HandlerTableBuilder::NewHandlerEntry() { int handler_id = static_cast<int>(entries_.size()); Entry entry = {0, 0, 0, Register(), false}; entries_.push_back(entry); return handler_id; } void HandlerTableBuilder::SetTryRegionStart(int handler_id, size_t offset) { DCHECK(Smi::IsValid(offset)); // Encoding of handler table requires this. entries_[handler_id].offset_start = offset; } void HandlerTableBuilder::SetTryRegionEnd(int handler_id, size_t offset) { DCHECK(Smi::IsValid(offset)); // Encoding of handler table requires this. entries_[handler_id].offset_end = offset; } void HandlerTableBuilder::SetHandlerTarget(int handler_id, size_t offset) { DCHECK(Smi::IsValid(offset)); // Encoding of handler table requires this. entries_[handler_id].offset_target = offset; } void HandlerTableBuilder::SetPrediction(int handler_id, bool will_catch) { entries_[handler_id].will_catch = will_catch; } void HandlerTableBuilder::SetContextRegister(int handler_id, Register reg) { entries_[handler_id].context = reg; } } // namespace interpreter } // namespace internal } // namespace v8