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using System; |
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using System.Collections.Generic; |
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|
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namespace Oni.Metadata |
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{ |
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internal class LinkVisitor : MetaTypeVisitor |
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{ |
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private readonly List<int> links = new List<int>(); |
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private readonly BinaryReader reader; |
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|
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public LinkVisitor(BinaryReader reader) |
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{ |
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this.reader = reader; |
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} |
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|
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public ICollection<int> Links => links; |
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|
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public override void VisitByte(MetaByte type) => reader.Position += type.Size; |
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public override void VisitInt16(MetaInt16 type) => reader.Position += type.Size; |
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public override void VisitUInt16(MetaUInt16 type) => reader.Position += type.Size; |
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public override void VisitInt32(MetaInt32 type) => reader.Position += type.Size; |
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public override void VisitUInt32(MetaUInt32 type) => reader.Position += type.Size; |
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public override void VisitInt64(MetaInt64 type) => reader.Position += type.Size; |
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public override void VisitUInt64(MetaUInt64 type) => reader.Position += type.Size; |
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public override void VisitFloat(MetaFloat type) => reader.Position += type.Size; |
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public override void VisitColor(MetaColor type) => reader.Position += type.Size; |
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public override void VisitRawOffset(MetaRawOffset type) => reader.Position += type.Size; |
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public override void VisitSepOffset(MetaSepOffset type) => reader.Position += type.Size; |
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|
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public override void VisitPointer(MetaPointer type) |
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{ |
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int id = reader.ReadInt32(); |
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|
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if (id != 0) |
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links.Add(id); |
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} |
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|
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public override void VisitString(MetaString type) => reader.Position += type.Size; |
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public override void VisitPadding(MetaPadding type) => reader.Position += type.Size; |
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|
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public override void VisitStruct(MetaStruct type) |
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{ |
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foreach (Field field in type.Fields) |
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field.Type.Accept(this); |
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} |
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|
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public override void VisitArray(MetaArray type) => VisitArray(type.ElementType, type.Count); |
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|
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public override void VisitVarArray(MetaVarArray type) |
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{ |
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int count; |
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|
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if (type.CountField.Type == MetaType.Int16) |
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count = reader.ReadUInt16(); |
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else |
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count = reader.ReadInt32(); |
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|
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VisitArray(type.ElementType, count); |
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} |
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|
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private void VisitArray(MetaType elementType, int count) |
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{ |
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if (elementType is MetaPointer || elementType is MetaStruct) |
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{ |
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for (int i = 0; i < count; i++) |
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elementType.Accept(this); |
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} |
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else |
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{ |
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reader.Position += elementType.Size * count; |
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} |
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} |
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} |
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} |
