io.prestosql.jdbc.$internal.airlift.units.Preconditions Maven / Gradle / Ivy
/*
* Copyright (C) 2007 The Guava Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.prestosql.jdbc.$internal.airlift.units;
// forked from io.prestosql.jdbc.$internal.guava.base.Preconditions
final class Preconditions
{
private Preconditions() {}
static void checkArgument(boolean expression, String errorMessage)
{
if (!expression) {
throw new IllegalArgumentException(errorMessage);
}
}
static void checkArgument(boolean expression, String errorMessageTemplate, Object... errorMessageArgs)
{
if (!expression) {
throw new IllegalArgumentException(format(errorMessageTemplate, errorMessageArgs));
}
}
static void checkState(boolean expression, String errorMessage)
{
if (!expression) {
throw new IllegalStateException(errorMessage);
}
}
static void checkState(boolean expression, String errorMessageTemplate, Object... errorMessageArgs)
{
if (!expression) {
throw new IllegalStateException(format(errorMessageTemplate, errorMessageArgs));
}
}
private static String format(String template, Object... args)
{
template = String.valueOf(template); // null -> "null"
// start substituting the arguments into the '%s' placeholders
StringBuilder builder = new StringBuilder(template.length() + 16 * args.length);
int templateStart = 0;
int i = 0;
while (i < args.length) {
int placeholderStart = template.indexOf("%s", templateStart);
if (placeholderStart == -1) {
break;
}
builder.append(template.substring(templateStart, placeholderStart));
builder.append(args[i++]);
templateStart = placeholderStart + 2;
}
builder.append(template.substring(templateStart));
// if we run out of placeholders, append the extra args in square braces
if (i < args.length) {
builder.append(" [");
builder.append(args[i++]);
while (i < args.length) {
builder.append(", ");
builder.append(args[i++]);
}
builder.append(']');
}
return builder.toString();
}
}