42 lines
1.1 KiB
C#
42 lines
1.1 KiB
C#
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using PascalABCCompiler.SyntaxTree;
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using PascalABCCompiler.TreeConverter;
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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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namespace SyntaxVisitors
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{
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public class SingleDeconstructChecker : BaseEnterExitVisitor
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{
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private int deconstructCount = 0;
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private bool isInClass = false;
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public static SingleDeconstructChecker New => new SingleDeconstructChecker();
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public override void Enter(syntax_tree_node st)
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{
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if (st is class_definition)
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isInClass = true;
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}
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public override void Exit(syntax_tree_node st)
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{
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if (st is class_definition)
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isInClass = false;
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}
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public override void visit(method_name _method_name)
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{
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if (!isInClass)
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return;
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if (_method_name.meth_name.name.ToLower() == compiler_string_consts.deconstruct_method_name)
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deconstructCount++;
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if (deconstructCount > 1)
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throw new SyntaxVisitorError("ONLY_ONE_DECONSTRUCT_ALLOWED", _method_name.Parent.source_context);
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}
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}
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}
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