69 lines
1.6 KiB
Java
69 lines
1.6 KiB
Java
package midend.symbol;
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import java.util.ArrayList;
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import java.util.HashMap;
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import error.Error;
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import error.ErrorType;
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import error.Errors;
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public class SymbolTable {
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private ArrayList<Symbol> symbolList;
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private HashMap<String, Symbol> symbolMap;
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private int tableId;
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private boolean isReleased;
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private SymbolTable parentTable;
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public SymbolTable(int tableId) {
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this.tableId = tableId;
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isReleased = false;
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symbolList = new ArrayList<>();
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symbolMap = new HashMap<>();
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parentTable = null;
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}
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public int getTableId() {
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return tableId;
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}
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public boolean isReleased() {
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return isReleased;
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}
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public void release() {
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isReleased = true;
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}
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public void addSymbol(Symbol symbol, Errors errors) {
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if (symbolMap.containsKey(symbol.getName())) {
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errors.addError(new Error(symbol.getLine(), ErrorType.b));
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return;
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}
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symbolList.add(symbol);
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symbolMap.put(symbol.getName(), symbol);
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}
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public void setParentTable(SymbolTable parentTable) {
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this.parentTable = parentTable;
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}
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public SymbolTable getParentTable() {
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return parentTable;
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}
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public Symbol getSymbol(String name) {
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if (symbolMap.containsKey(name)) {
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return symbolMap.get(name);
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}
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return null;
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}
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public String toString() {
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String info = "";
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for (Symbol symbol : symbolList) {
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info += tableId + " " + symbol.toString();
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}
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return info;
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}
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}
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