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ASTElement.cs
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ASTElement.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace TeachingMaterial {
public abstract class ASTElement {
private List<ASTElement>[] m_children=null;
private ASTElement m_parent;
private int m_serial;
private string m_name;
private static int m_seriarCounter=0;
public ASTElement M_Parent => m_parent;
public string M_Name => m_name;
public IEnumerable<ASTElement> GetChildren() {
for (int i = 0; i < m_children.Length; i++) {
foreach (ASTElement element in m_children[i]) {
yield return element;
}
}
}
protected ASTElement(int context) {
m_serial = m_seriarCounter++;
m_name = GenerateNodeName();
if (context != 0) {
m_children = new List<ASTElement>[context];
for (int i = 0; i < context; i++) {
m_children[i] = new List<ASTElement>();
}
}
}
public abstract T Accept<T>(ASTBaseVisitor<T> visitor);
public void AddChild(ASTElement child, int contextIndex) {
m_children[contextIndex].Add(child);
}
public ASTElement GetChild(int context, int index) {
return m_children[context][index];
}
public virtual string GenerateNodeName() {
return "_" + m_serial;
}
}
}