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ToStringVisitor.java
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74 lines (63 loc) · 1.94 KB
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package sqlancer.common.visitor;
import java.util.List;
import sqlancer.common.visitor.UnaryOperation.OperatorKind;
public abstract class ToStringVisitor<T> extends NodeVisitor<T> {
protected final StringBuilder sb = new StringBuilder();
public void visit(BinaryOperation<T> op) {
sb.append('(');
sb.append('(');
visit(op.getLeft());
sb.append(')');
sb.append(op.getOperatorRepresentation());
sb.append('(');
visit(op.getRight());
sb.append(')');
sb.append(')');
}
public void visit(UnaryOperation<T> op) {
if (!op.omitBracketsWhenPrinting()) {
sb.append('(');
}
if (op.getOperatorKind() == OperatorKind.PREFIX) {
sb.append(op.getOperatorRepresentation());
sb.append(' ');
}
if (!op.omitBracketsWhenPrinting()) {
sb.append('(');
}
visit(op.getExpression());
if (!op.omitBracketsWhenPrinting()) {
sb.append(')');
}
if (op.getOperatorKind() == OperatorKind.POSTFIX) {
sb.append(' ');
sb.append(op.getOperatorRepresentation());
}
if (!op.omitBracketsWhenPrinting()) {
sb.append(')');
}
}
@SuppressWarnings("unchecked")
public void visit(T expr) {
assert expr != null;
if (expr instanceof BinaryOperation<?>) {
visit((BinaryOperation<T>) expr);
} else if (expr instanceof UnaryOperation<?>) {
visit((UnaryOperation<T>) expr);
} else {
visitSpecific(expr);
}
}
public abstract void visitSpecific(T expr);
public void visit(List<T> expressions) {
for (int i = 0; i < expressions.size(); i++) {
if (i != 0) {
sb.append(", ");
}
visit(expressions.get(i));
}
}
public String get() {
return sb.toString();
}
}