ExpressionFormatter.java 文件源码

@Override
public String visitObjectLiteral(ObjectLiteral node, Void context) {
    StringBuilder builder = new StringBuilder("{");
    boolean first = true;
    TreeMultimap<String, Expression> sorted = TreeMultimap.create(
            Ordering.natural().nullsLast(),
            Ordering.usingToString().nullsLast()
    );
    sorted.putAll(node.values());
    for (Map.Entry<String, Expression> entry : sorted.entries()) {
        if (!first) {
            builder.append(", ");
        } else {
            first = false;
        }
        builder.append(formatIdentifier(entry.getKey()))
               .append("= ")
               .append(entry.getValue().accept(this, context));

    }
    return builder.append("}").toString();
}