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Scope.java
Package: antlr-2_7_0.zip [view]
Upload User: afrynkmhm
Upload Date: 2007-01-06
Package Size: 1262k
Code Size: 1k
Category:
Compiler program
Development Platform:
Others
- package tinybasic;
- import java.util.*;
- public class Scope {
- protected Scope prev;
- protected Scope global;
- Hashtable symbolTable;
- protected Scope(Scope prev){
- this.prev=prev;
- symbolTable = new Hashtable();
- }
- public Scope cloneScope(Scope prev){
- Scope newScope = new Scope(prev);
- return newScope;
- }
- void insertVariable(String v,DTDataType t){
- symbolTable.put(v.toLowerCase(),t);
- }
- public DTDataType getVariable(String v){
- DTDataType t=(DTDataType)symbolTable.get(v.toLowerCase());
- return t;
- }
- public int getVariableDimension(String v){
- DTDataType t=getVariable(v);
- if(t!=null){
- return t.getDimension();
- } else {
- return 0;
- }
- }
- public int getVariableType(String v){
- DTDataType t=getVariable(v);
- if(t!=null){
- return t.getType();
- } else {
- return 0;
- }
- }
- public boolean isArrayVariable(String s){
- return (getVariableDimension(s) > 0);
- }
- public Scope getPrev(){
- return prev;
- }
- }