42 lines
1 KiB
C#
42 lines
1 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using PascalABCCompiler.Errors;
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using PascalABCCompiler;
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using PascalABCCompiler.SyntaxTree;
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namespace SyntaxVisitors
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{
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public class LoweringYieldSequenceVisitor : BaseChangeVisitor
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{
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private int _Num = 0;
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private ident NewVarName()
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{
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++_Num;
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return new ident("$yieldSeqForeachVar$" + _Num);
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}
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public static LoweringYieldSequenceVisitor New
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{
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get { return new LoweringYieldSequenceVisitor(); }
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}
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public static void Accept(procedure_definition pd)
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{
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New.ProcessNode(pd);
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}
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public override void visit(yield_sequence_node yn)
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{
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var id = NewVarName();
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id.source_context = yn.source_context;
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var fe = new foreach_stmt(id, new no_type_foreach(), yn.ex, new yield_node(id,yn.source_context),yn.source_context);
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ReplaceStatement(yn, fe);
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}
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}
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}
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