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08b2294713
implicit closure of a method compiled by kernel (fixes #31305). Change-Id: Iabeee2e382bf07ff78645054e453e0bd1afd02ab Reviewed-on: https://dart-review.googlesource.com/24362 Commit-Queue: Régis Crelier <regis@google.com> Reviewed-by: Samir Jindel <sjindel@google.com>
142 lines
4.5 KiB
C++
142 lines
4.5 KiB
C++
// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/kernel.h"
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#include "vm/compiler/frontend/kernel_binary_flowgraph.h"
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#if !defined(DART_PRECOMPILED_RUNTIME)
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namespace dart {
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namespace kernel {
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bool FieldHasFunctionLiteralInitializer(const Field& field,
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TokenPosition* start,
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TokenPosition* end) {
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Zone* zone = Thread::Current()->zone();
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const Script& script = Script::Handle(zone, field.Script());
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TranslationHelper translation_helper(Thread::Current());
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translation_helper.InitFromScript(script);
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StreamingFlowGraphBuilder builder(&translation_helper,
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Script::Handle(zone, field.Script()), zone,
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TypedData::Handle(zone, field.KernelData()),
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field.KernelDataProgramOffset());
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builder.SetOffset(field.kernel_offset());
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kernel::FieldHelper field_helper(&builder);
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field_helper.ReadUntilExcluding(kernel::FieldHelper::kEnd, true);
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return field_helper.FieldHasFunctionLiteralInitializer(start, end);
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}
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KernelLineStartsReader::KernelLineStartsReader(
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const dart::TypedData& line_starts_data,
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dart::Zone* zone)
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: line_starts_data_(line_starts_data) {
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TypedDataElementType type = line_starts_data_.ElementType();
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if (type == kInt8ArrayElement) {
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helper_ = new KernelInt8LineStartsHelper();
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} else if (type == kInt16ArrayElement) {
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helper_ = new KernelInt16LineStartsHelper();
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} else if (type == kInt32ArrayElement) {
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helper_ = new KernelInt32LineStartsHelper();
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} else {
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UNREACHABLE();
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}
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}
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intptr_t KernelLineStartsReader::LineNumberForPosition(
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intptr_t position) const {
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intptr_t line_count = line_starts_data_.Length();
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intptr_t current_start = 0;
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for (intptr_t i = 0; i < line_count; ++i) {
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current_start += helper_->At(line_starts_data_, i);
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if (current_start > position) {
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// If current_start is greater than the desired position, it means that
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// it is for the line after |position|. However, since line numbers
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// start at 1, we just return |i|.
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return i;
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}
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if (current_start == position) {
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return i + 1;
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}
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}
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return line_count;
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}
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void KernelLineStartsReader::LocationForPosition(intptr_t position,
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intptr_t* line,
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intptr_t* col) const {
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intptr_t line_count = line_starts_data_.Length();
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intptr_t current_start = 0;
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intptr_t previous_start = 0;
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for (intptr_t i = 0; i < line_count; ++i) {
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current_start += helper_->At(line_starts_data_, i);
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if (current_start > position) {
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*line = i;
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if (col != NULL) {
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*col = position - previous_start + 1;
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}
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return;
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}
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if (current_start == position) {
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*line = i + 1;
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if (col != NULL) {
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*col = 1;
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}
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return;
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}
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previous_start = current_start;
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}
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// If the start of any of the lines did not cross |position|,
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// then it means the position falls on the last line.
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*line = line_count;
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if (col != NULL) {
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*col = position - current_start + 1;
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}
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}
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void KernelLineStartsReader::TokenRangeAtLine(
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intptr_t source_length,
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intptr_t line_number,
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TokenPosition* first_token_index,
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TokenPosition* last_token_index) const {
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ASSERT(line_number <= line_starts_data_.Length());
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intptr_t cumulative = 0;
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for (intptr_t i = 0; i < line_number; ++i) {
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cumulative += helper_->At(line_starts_data_, i);
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}
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*first_token_index = dart::TokenPosition(cumulative);
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if (line_number == line_starts_data_.Length()) {
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*last_token_index = dart::TokenPosition(source_length);
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} else {
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*last_token_index = dart::TokenPosition(
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cumulative + helper_->At(line_starts_data_, line_number) - 1);
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}
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}
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int32_t KernelLineStartsReader::KernelInt8LineStartsHelper::At(
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const dart::TypedData& data,
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intptr_t index) const {
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return data.GetInt8(index);
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}
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int32_t KernelLineStartsReader::KernelInt16LineStartsHelper::At(
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const dart::TypedData& data,
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intptr_t index) const {
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return data.GetInt16(index << 1);
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}
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int32_t KernelLineStartsReader::KernelInt32LineStartsHelper::At(
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const dart::TypedData& data,
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intptr_t index) const {
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return data.GetInt32(index << 2);
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}
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} // namespace kernel
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} // namespace dart
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#endif // !defined(DART_PRECOMPILED_RUNTIME)
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