49 lines
1.1 KiB
Java
49 lines
1.1 KiB
Java
package TP2.asd;
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import java.util.Stack;
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import org.pcollections.*;
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import TP2.asd.Interface.Type;
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public class SymTable {
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private Stack<PMap<String,Type>> stackMap;
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public SymTable(){
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this.stackMap= new Stack<>();
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}
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public void next_layer(){
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stackMap.push(HashTreePMap.empty());
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}
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public void quit_layer() throws Exception{
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if(stackMap.isEmpty()){
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throw new Exception();
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}
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stackMap.pop();
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}
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public PMap<String,Type> peppapeek(){
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return stackMap.peek();
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}
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public void addVar(String s, Type t){
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//Save temporary if not PMap wont save
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PMap<String, Type> pmap = this.peppapeek();
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pmap= pmap.plus(s,t);
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//Delete old ones
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stackMap.pop();
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//Push the new one
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stackMap.push(pmap);
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}
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//Usually look for var in highest level , if not found research.
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public boolean searchVar(String s){
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for(int i= stackMap.size()-1; i>=0; i--){
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if(stackMap.get(i).containsKey(s)){
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return true;
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}
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}
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return false;
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}
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}
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