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


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package submit.ast;

import java.util.ArrayList;
import java.util.List;

public class IfStatement implements Statement {
    private ArrayList<Statement> statements;
    private Expression simpleExpression;

    public IfStatement(Expression simpleExpression, List<Statement> statements) {
        this.simpleExpression = simpleExpression;
        this.statements = new ArrayList<>(statements);
    }

    @Override
    public void toCminus(StringBuilder builder, String prefix) {
        builder.append(prefix);
        builder.append("if").append(" (");
        simpleExpression.toCminus(builder, "");
        builder.append(")\n");

        Statement ifStmt = statements.get(0);
        boolean isIfCompound = ifStmt.getClass() == CompoundStatement.class;
        ifStmt.toCminus(builder, prefix + (isIfCompound ? "" : "\t"));
        if (statements.size() == 2) {
            Statement elseStmt = statements.get(1);
            boolean isElseCompound = elseStmt.getClass() == CompoundStatement.class;

            builder.append(prefix).append("else\n");
            elseStmt.toCminus(builder, prefix + (isElseCompound ? "" : "\t"));
        }
    }
}