126 lines
4.7 KiB
C#
126 lines
4.7 KiB
C#
/*
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* Yet Another Tiger Compiler (YATC)
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*
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* Copyright 2014 Damian Valdés Santiago, Juan Carlos Pujol Mainegra
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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using Antlr.Runtime;
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using System.Collections.Generic;
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using System.Linq;
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using System.Reflection;
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using System.Reflection.Emit;
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using YATC.Scope;
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namespace YATC.ASTNodes
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{
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internal class RecordDeclNode : DeclarationNode
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{
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public RecordDeclNode(IToken payload)
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: base(payload)
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{
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}
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public TypeFieldNode[] TypeFieldNodes
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{
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get
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{
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return TigerChildren.Length > 0 ? TigerChildren.Cast<TypeFieldNode>().ToArray() : new TypeFieldNode[] {};
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}
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}
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public TypeBuilder TypeBuilder { get; private set; }
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public override bool CheckHeader(TigerScope scope, Report report, string name)
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{
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this.TigerTypeInfo = new TigerTypeInfo(name, new TigerTypeHolder(), false);
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scope.Add(this.TigerTypeInfo);
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return true;
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}
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public override void CheckSemantics(TigerScope scope, Report report)
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{
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var hash = new HashSet<string>();
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foreach (var typeFieldNode in this.TypeFieldNodes)
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{
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typeFieldNode.TypeNode.CheckSemantics(scope, report);
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if (!typeFieldNode.TypeNode.IsOk)
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{
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this.TigerTypeInfo.Holder.TigerType = TigerType.Error;
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this.IsOK = false;
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return;
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}
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string name = typeFieldNode.IdNode.Name;
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if (!hash.Add(name))
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{
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report.AddError(this.Line, this.Column, "Redeclared field name: '{0}'.", name);
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this.TigerTypeInfo.Holder.TigerType = TigerType.Error;
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this.IsOK = false;
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return;
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}
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}
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VariableInfo[] fieldInfos = new VariableInfo[this.TypeFieldNodes.Length];
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for (int i = 0; i < fieldInfos.Length; i++)
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{
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TigerTypeInfo fieldTigerTypeInfo = scope.FindTypeInfo(this.TypeFieldNodes[i].TypeNode.Name, false);
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if (fieldTigerTypeInfo == null)
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{
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report.AddError(this.Line, this.Column, "Undeclared field type: '{0}'.",
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this.TypeFieldNodes[i].TypeNode.Name);
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this.TigerTypeInfo.Holder.TigerType = TigerType.Error;
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this.IsOK = false;
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return;
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}
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fieldInfos[i] = new VariableInfo(this.TypeFieldNodes[i].Name, fieldTigerTypeInfo.Holder, false);
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}
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this.TigerTypeInfo.Holder.TigerType = new RecordType(this.TigerTypeInfo.Name, fieldInfos);
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this.IsOK = true;
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}
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public void GenerateHeaderCode(ModuleBuilder moduleBuilder)
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{
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string name = string.Format("{0}_{1}", this.TigerTypeInfo.Name, ProgramNode.RecordNumber++);
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this.TigerTypeInfo.Holder.TigerType.CLRType =
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this.TypeBuilder = moduleBuilder.DefineType(name, TypeAttributes.Public);
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}
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internal override void GenerateCode(ModuleBuilder moduleBuilder)
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{
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foreach (var variableInfo in ((RecordType)this.TigerTypeInfo.Holder.TigerType).FieldInfos)
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{
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this.TypeBuilder.DefineField(
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variableInfo.Name,
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variableInfo.Holder.TigerType.GetCLRType(),
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FieldAttributes.Public);
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}
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// Finish the type.
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this.TigerTypeInfo.Holder.TigerType.CLRType = this.TypeBuilder.CreateType();
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}
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}
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}
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