Homework/cs5300/p4-formatter/submit/ast/Expression.java


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/*
 * Code formatter project
 * CS 4481
 */
package submit.ast;

import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

/**
 *
 * @author edwajohn, simponic :3
 */
public interface Expression extends Node {
    public static void joinExpressionOperatorLists(List<BinaryOperatorType> binaryOperatorTypes, List<Expression> exprs,
            StringBuilder builder) {
        int numExpr = exprs.size();
        Expression lhs = exprs.get(0);
        if (numExpr == 1)
            lhs.toCminus(builder, "");
        if (numExpr > 1) {
            BinaryOperator binOp = null;
            for (int i = 0; i < binaryOperatorTypes.size(); i++) {
                binOp = new BinaryOperator(lhs, binaryOperatorTypes.get(i), exprs.get(i + 1));
                lhs = binOp;
            }
            binOp.toCminus(builder, "");
        }
    }

    public static void joinExpressions(BinaryOperatorType binaryOperatorType, List<Expression> exprs,
            StringBuilder builder) {
        Expression.joinExpressionOperatorLists(Arrays.asList(new BinaryOperatorType[exprs.size() - 1]).stream()
                .map(e -> binaryOperatorType).collect(Collectors.toList()), exprs, builder);
    }
}