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Unified Diff: tools/servicec/lib/src/resources/dart/struct.dart

Issue 2035023003: Remove service-compiler related code. (Closed) Base URL: git@github.com:dartino/sdk.git@master
Patch Set: Created 4 years, 6 months ago
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Index: tools/servicec/lib/src/resources/dart/struct.dart
diff --git a/tools/servicec/lib/src/resources/dart/struct.dart b/tools/servicec/lib/src/resources/dart/struct.dart
deleted file mode 100644
index bff6c218228dca59d908342280be77300a60b83b..0000000000000000000000000000000000000000
--- a/tools/servicec/lib/src/resources/dart/struct.dart
+++ /dev/null
@@ -1,288 +0,0 @@
-// Copyright (c) 2015, the Dartino 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.md file.
-
-library service.struct;
-
-import "dart:dartino.ffi";
-import "dart:collection";
-
-const int HEADER_SIZE = 56;
-
-Reader getRoot(Reader reader, ForeignMemory request) {
- int segments = request.getInt32(HEADER_SIZE - 8);
- if (segments == 0) {
- MessageReader messageReader = new MessageReader();
- Segment segment = new Segment(messageReader, request);
- messageReader.segments.add(segment);
- reader.$segment = segment;
- reader.$offset = HEADER_SIZE;
- return reader;
- } else {
- return getSegmentedRoot(reader, request, segments);
- }
-}
-
-Reader getSegmentedRoot(Reader reader, ForeignMemory request, int segments) {
- MessageReader messageReader = new MessageReader();
- int offset = HEADER_SIZE + 8;
- for (int i = 0; i < segments; i++) {
- int address = (Foreign.bitsPerMachineWord == 32)
- ? request.getUint32(offset)
- : request.getUint64(offset);
- int size = request.getInt32(offset + 8);
- ForeignMemory memory = new ForeignMemory.fromAddress(address, size);
- Segment segment = new Segment(messageReader, memory);
- messageReader.segments.add(segment);
- offset += 16;
- }
- reader.$segment = messageReader.segments.first;
- reader.$offset = HEADER_SIZE;
- return reader;
-}
-
-int getResultMessage(Builder builder) {
- BuilderSegment segment = builder.$segment;
- if (segment._next == null) {
- // Mark result as being non-segmented.
- ForeignMemory memory = segment.memory;
- memory.setInt32(0, 0);
- memory.setInt32(4, memory.length);
- return memory.address;
- }
-
- // The result is a segmented message. Build a memory block that
- // contains the addresses and sizes of all of them.
- int segments = segment._builder.$segments;
- int size = 8 + (segments * 16);
- ForeignMemory buffer = new ForeignMemory.allocated(size);
- // Mark the result as being segmented.
- buffer.setInt32(0, segments);
- int offset = 8;
- do {
- buffer.setInt64(offset, segment.memory.address);
- buffer.setInt32(offset + 8, segment._used);
- segment = segment._next;
- offset += 16;
- } while (segment != null);
- return buffer.address;
-}
-
-class MessageReader {
- final List<Segment> segments = [];
- MessageReader();
-
- Segment getSegment(int id) => segments[id];
-}
-
-class Segment {
- final MessageReader reader;
- final ForeignMemory memory;
- Segment(this.reader, this.memory);
-}
-
-class Reader {
- Segment $segment;
- int $offset;
-
- readStruct(Reader reader, int offset) {
- Segment segment = $segment;
- offset += $offset;
- while (true) {
- ForeignMemory memory = segment.memory;
- int lo = memory.getInt32($offset + 0);
- int hi = memory.getInt32($offset + 4);
- int tag = lo & 3;
- if (tag == 0) {
- throw new UnimplementedError("Cannot read uninitialized structs");
- } else if (tag == 1) {
- reader.$segment = segment;
- reader.$offset = lo >> 2;
- return reader;
- } else {
- segment = segment.reader.getSegment(hi);
- $offset = lo >> 2;
- }
- }
- }
-
- readList(ListReader reader, int offset) {
- Segment segment = $segment;
- offset += $offset;
- while (true) {
- ForeignMemory memory = segment.memory;
- int lo = memory.getInt32(offset + 0);
- int hi = memory.getInt32(offset + 4);
- int tag = lo & 3;
- if (tag == 0) {
- // If the list hasn't been initialized, then
- // we return an empty list.
- reader.$length = 0;
- return reader;
- } else if (tag == 2) {
- reader.$segment = segment;
- reader.$offset = lo >> 2;
- reader.$length = hi;
- return reader;
- } else {
- segment = segment.reader.getSegment(hi);
- offset = lo >> 2;
- }
- }
- }
-
- String readString(ListReader reader, int offset) {
- List<int> charCodes = readList(reader, offset);
- return new String.fromCharCodes(charCodes);
- }
-}
-
-abstract class ListReader<T> extends Reader with ListMixin<T> {
- int $length;
- int get length => $length; // Required by List<T>.
-
- readListElement(Reader reader, int index, int size) {
- reader.$segment = $segment;
- reader.$offset = $offset + index * size;
- return reader;
- }
-
- void operator []=(int index, value) {
- throw new UnsupportedError("ListReader::operator []=");
- }
-
- void set length(int newLength) {
- throw new UnsupportedError("ListReader::set length");
- }
-}
-
-class BuilderSegment {
- final MessageBuilder _builder;
- final ForeignMemory memory;
- int _id;
- int _used = 0;
- BuilderSegment _next;
-
- BuilderSegment(this._builder, this._id, int space)
- : memory = new ForeignMemory.allocated(space);
-
- bool HasSpaceForBytes(int bytes) => _used + bytes <= memory.length;
-
- int Allocate(int bytes) {
- if (!HasSpaceForBytes(bytes)) return -1;
- var result = _used;
- _used += bytes;
- return result;
- }
-}
-
-class MessageBuilder {
- BuilderSegment _first;
- BuilderSegment _last;
- int $segments = 1;
-
- MessageBuilder(int space) {
- _first = new BuilderSegment(this, 0, space);
- _last = _first;
- }
-
- Builder initRoot(Builder builder, int size) {
- int offset = _first.Allocate(8 + size);
- builder.$segment = _first;
- builder.$offset = offset + 8;
- return builder;
- }
-
- BuilderSegment FindSegmentForBytes(int bytes) {
- if (_last.HasSpaceForBytes(bytes)) return _last;
- int capacity = (bytes > 8192) ? bytes : 8192;
- BuilderSegment segment = new BuilderSegment(this, $segments++, capacity);
- _last._next = segment;
- _last = segment;
- return segment;
- }
-}
-
-class Builder {
- BuilderSegment $segment;
- int $offset;
-
- Builder NewStruct(Builder builder, int offset, int size) {
- offset += $offset;
- BuilderSegment segment = $segment;
- while (true) {
- int result = segment.Allocate(size);
- ForeignMemory memory = segment.memory;
- if (result >= 0) {
- memory.setInt32(offset + 0, (result << 2) | 1);
- memory.setInt32(offset + 4, 0);
- builder.$segment = segment;
- builder.$offset = result;
- return builder;
- }
-
- BuilderSegment other = segment._builder.FindSegmentForBytes(size + 8);
- int target = other.Allocate(8);
- memory.setInt32(offset + 0, (target << 2) | 3);
- memory.setInt32(offset + 4, other._id);
-
- segment = other;
- offset = target;
- }
- }
-
- ListBuilder NewList(ListBuilder list,
- int offset,
- int length,
- int size) {
- list.$length = length;
- offset += $offset;
- size *= length;
- BuilderSegment segment = $segment;
- while (true) {
- int result = segment.Allocate(size);
- ForeignMemory memory = segment.memory;
- if (result >= 0) {
- memory.setInt32(offset + 0, (result << 2) | 1);
- memory.setInt32(offset + 4, length);
- list.$segment = segment;
- list.$offset = result;
- return list;
- }
-
- BuilderSegment other = segment._builder.FindSegmentForBytes(size + 8);
- int target = other.Allocate(8);
- memory.setInt32(offset + 0, (target << 2) | 3);
- memory.setInt32(offset + 4, other._id);
-
- segment = other;
- offset = target;
- }
- }
-
- void NewString(ListBuilder list, int offset, String value) {
- NewList(list, offset, value.length, 2);
- for (int i = 0; i < value.length; i++) {
- list[i] = value.codeUnitAt(i);
- }
- }
-}
-
-abstract class ListBuilder<T> extends Builder with ListMixin<T> {
- int $length;
- int get length => $length;
-
- readListElement(Builder builder, int index, int size) {
- builder.$segment = $segment;
- builder.$offset = $offset + index * size;
- return builder;
- }
-
- void operator []=(int index, value) {
- throw new UnsupportedError("ListBuilder::operator []=");
- }
-
- void set length(int newLength) {
- throw new UnsupportedError("ListBuilder::set length");
- }
-}
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