// Path: Calculator/src/com/digipom/android/library/evaluator/lexer/Operator.java
// public enum Operator implements Token {
// 	ADD(0, LEFT), SUBTRACT(0, LEFT), MULTIPLY(1, LEFT), DIVIDE(1, LEFT), NEGATION(2, RIGHT), POWER(3, RIGHT);	
// 
// 	public static enum Associativity {
// 		LEFT, RIGHT
// 	}
// 
// 	public final int precedence;
// 	public final Associativity associativity;
// 
// 	private Operator(int precedence, Associativity associativity) {
// 		this.precedence = precedence;
// 		this.associativity = associativity;
// 	}
// 	
// 	@Override
// 	public String toString() {
// 		if (this == ADD) {
// 			return "+";
// 		} else if (this == SUBTRACT || this == NEGATION) {
// 			return "-";
// 		} else if (this == MULTIPLY) {
// 			return "*";
// 		} else if (this == DIVIDE) {
// 			return "/";
// 		} else {
// 			return "^";
// 		}
// 	}
// }
// 
// Path: Calculator/src/com/digipom/android/library/evaluator/lexer/Parenthesis.java
// public enum Parenthesis implements Token {
// 	OPEN, CLOSE;
// 
// 	@Override
// 	public String toString() {		
// 		if (this == OPEN) {
// 			return "(";
// 		} else {
// 			return ")";
// 		}
// 	}
// }
// 
// Path: Calculator/src/com/digipom/android/library/evaluator/lexer/PredefinedFunction.java
// public enum PredefinedFunction implements Token {
// 	POW, ABS, SIN, COS, TAN, LN, SQRT;
// 	
// 	@Override
// 	public String toString() {
// 		return name().toLowerCase();
// 	}
// }
// 
// Path: Calculator/src/com/digipom/android/library/evaluator/lexer/Token.java
// public interface Token {
// 	public static final Token EOF = new Token() {};
// }


import static com.digipom.android.library.evaluator.lexer.Operator.NEGATION;
import static com.digipom.android.library.evaluator.lexer.Operator.SUBTRACT;
import java.util.Stack;
import com.digipom.android.library.evaluator.lexer.Operator;
import com.digipom.android.library.evaluator.lexer.Parenthesis;
import com.digipom.android.library.evaluator.lexer.PredefinedFunction;
import com.digipom.android.library.evaluator.lexer.Token;
		}
	}

	public void clear() {
		expressionList.clear();
	}

	public String build() {		
		int openCount = 0;
		int closeCount = 0;

		for (Token token : expressionList) {
			if (token == Parenthesis.OPEN) {
				openCount++;
			} else if (token == Parenthesis.CLOSE) {
				closeCount++;
			}
		}

		int numCloseRequired = openCount - closeCount;

		if (numCloseRequired > 0) {
			if (peek() != Parenthesis.OPEN && !(peek() instanceof Operator)) {
				for (int i = 0; i < numCloseRequired; i++) {
					push(Parenthesis.CLOSE);					
				}
			}
		} else if (numCloseRequired < 0) {
			// This check probably won't be needed since there's another
			// validation that checks if the parenthesis count allows a close.
// Path: Calculator/src/com/digipom/android/library/evaluator/lexer/Operator.java
// public enum Operator implements Token {
// 	ADD(0, LEFT), SUBTRACT(0, LEFT), MULTIPLY(1, LEFT), DIVIDE(1, LEFT), NEGATION(2, RIGHT), POWER(3, RIGHT);	
// 
// 	public static enum Associativity {
// 		LEFT, RIGHT
// 	}
// 
// 	public final int precedence;
// 	public final Associativity associativity;
// 
// 	private Operator(int precedence, Associativity associativity) {
// 		this.precedence = precedence;
// 		this.associativity = associativity;
// 	}
// 	
// 	@Override
// 	public String toString() {
// 		if (this == ADD) {
// 			return "+";
// 		} else if (this == SUBTRACT || this == NEGATION) {
// 			return "-";
// 		} else if (this == MULTIPLY) {
// 			return "*";
// 		} else if (this == DIVIDE) {
// 			return "/";
// 		} else {
// 			return "^";
// 		}
// 	}
// }
// 
// Path: Calculator/src/com/digipom/android/library/evaluator/lexer/Parenthesis.java
// public enum Parenthesis implements Token {
// 	OPEN, CLOSE;
// 
// 	@Override
// 	public String toString() {		
// 		if (this == OPEN) {
// 			return "(";
// 		} else {
// 			return ")";
// 		}
// 	}
// }
// 
// Path: Calculator/src/com/digipom/android/library/evaluator/lexer/PredefinedFunction.java
// public enum PredefinedFunction implements Token {
// 	POW, ABS, SIN, COS, TAN, LN, SQRT;
// 	
// 	@Override
// 	public String toString() {
// 		return name().toLowerCase();
// 	}
// }
// 
// Path: Calculator/src/com/digipom/android/library/evaluator/lexer/Token.java
// public interface Token {
// 	public static final Token EOF = new Token() {};
// }


// Path: Calculator/src/com/digipom/android/library/evaluator/builder/ExpressionBuilder.java
import static com.digipom.android.library.evaluator.lexer.Operator.NEGATION;
import static com.digipom.android.library.evaluator.lexer.Operator.SUBTRACT;
import java.util.Stack;
import com.digipom.android.library.evaluator.lexer.Operator;
import com.digipom.android.library.evaluator.lexer.Parenthesis;
import com.digipom.android.library.evaluator.lexer.PredefinedFunction;
import com.digipom.android.library.evaluator.lexer.Token;

		}
	}

	public void clear() {
		expressionList.clear();
	}

	public String build() {		
		int openCount = 0;
		int closeCount = 0;

		for (Token token : expressionList) {
			if (token == Parenthesis.OPEN) {
				openCount++;
			} else if (token == Parenthesis.CLOSE) {
				closeCount++;
			}
		}

		int numCloseRequired = openCount - closeCount;

		if (numCloseRequired > 0) {
			if (peek() != Parenthesis.OPEN && !(peek() instanceof Operator)) {
				for (int i = 0; i < numCloseRequired; i++) {
					push(Parenthesis.CLOSE);					
				}
			}
		} else if (numCloseRequired < 0) {
			// This check probably won't be needed since there's another
			// validation that checks if the parenthesis count allows a close.
			for (int i = numCloseRequired; i < 0; i++) {