[fix UnitexGramLab#110] Resolving a bug in the construction of POS-list

Implementation of Kleene's algorithm in order to transform an automaton into a regular expression

unitex/src/fr/umlv/unitex/expr/Concatenation.java

@@ -0,0 +1,94 @@
+package fr.umlv.unitex.expr;
+
+import java.util.List;
+
+public class Concatenation extends Operator {
+
+	@Override
+	public boolean equals(Object o) {
+		if (!(o instanceof Value)) {
+			return false;
+		}
+		Concatenation c= (Concatenation) o;
+		return c.getOperands().equals(this.getOperands());
+	}
+
+
+	@Override
+	protected String getOpSymbol() {
+		return " ";
+	}
+
+
+
+	public String getOpeningSymbol() {
+		return "";
+	}
+
+	public String getClosingSymbol() {
+		return "";
+	}
+
+
+	/*
+	public void addOperand(Parallelization p) {
+		super.addOperand(p);
+	}
+	*/
+
+	/*
+	public void addOperand(Value v) {
+		super.addOperand(v);
+	}
+	*/
+
+	/*
+	public void addOperand(Value v) {
+		this.addOperand(v);
+	}
+	*/
+
+	/*
+	public void addOperand(Concatenation c) {
+		List<Expression> list = c.getOperands();
+		for (Expression e : list) {
+			this.addOperand(e);
+		}
+	}
+	*/
+
+
+	public void addOperand(Expression expr) {
+		if (expr instanceof Concatenation) {
+			for (Expression e : expr.getOperands()) {
+				this.addOperand(e);
+			}
+		}
+		else {
+			super.addOperand(expr);
+		}
+	}
+
+
+	public void addOperands(Expression expr, int start, int end) {
+		List<Expression> list = expr.getOperands();
+		for (int i = start; i < end; i++) {
+			this.addOperand(list.get(i));
+		}
+	}
+
+
+
+
+	/*
+	public void addOperand(Expression expr, int start, int end) {
+		List<Expression> list = expr.getOperands();
+		for (int i = start; i < end; i++) {
+			this.addOperand(list.get(i));
+		}
+	}
+	*/
+
+
+
+}

unitex/src/fr/umlv/unitex/expr/Expression.java

@@ -0,0 +1,14 @@
+package fr.umlv.unitex.expr;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public interface Expression {
+
+
+	List<Expression> getOperands();
+
+	int getOperandsSize();
+
+
+}