tech.picnic.errorprone.refasterrules.PreconditionsRules Maven / Gradle / Ivy
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package tech.picnic.errorprone.refasterrules;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkElementIndex;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Preconditions.checkPositionIndex;
import static com.google.common.base.Preconditions.checkState;
import static com.google.errorprone.refaster.ImportPolicy.STATIC_IMPORT_ALWAYS;
import static java.util.Objects.requireNonNull;
import com.google.common.base.Preconditions;
import com.google.errorprone.refaster.annotation.AfterTemplate;
import com.google.errorprone.refaster.annotation.BeforeTemplate;
import com.google.errorprone.refaster.annotation.UseImportPolicy;
import java.util.Objects;
import tech.picnic.errorprone.refaster.annotation.OnlineDocumentation;
/** Refaster templates related to statements dealing with {@link Preconditions}. */
@OnlineDocumentation
final class PreconditionsRules {
private PreconditionsRules() {}
/** Prefer {@link Preconditions#checkArgument(boolean)} over more verbose alternatives. */
static final class CheckArgument {
@BeforeTemplate
void before(boolean condition) {
if (condition) {
throw new IllegalArgumentException();
}
}
@AfterTemplate
@UseImportPolicy(STATIC_IMPORT_ALWAYS)
void after(boolean condition) {
checkArgument(!condition);
}
}
/** Prefer {@link Preconditions#checkArgument(boolean, Object)} over more verbose alternatives. */
static final class CheckArgumentWithMessage {
@BeforeTemplate
void before(boolean condition, String message) {
if (condition) {
throw new IllegalArgumentException(message);
}
}
@AfterTemplate
@UseImportPolicy(STATIC_IMPORT_ALWAYS)
void after(boolean condition, String message) {
checkArgument(!condition, message);
}
}
/**
* Prefer {@link Preconditions#checkElementIndex(int, int, String)} over less descriptive or more
* verbose alternatives.
*
* Note that the two-argument {@link Preconditions#checkElementIndex(int, int)} is better
* replaced with {@link java.util.Objects#checkIndex(int, int)}.
*/
static final class CheckElementIndexWithMessage {
@BeforeTemplate
void before(int index, int size, String message) {
if (index < 0 || index >= size) {
throw new IndexOutOfBoundsException(message);
}
}
@AfterTemplate
@UseImportPolicy(STATIC_IMPORT_ALWAYS)
void after(int index, int size, String message) {
checkElementIndex(index, size, message);
}
}
/** Prefer {@link Objects#requireNonNull(Object)} over non-JDK alternatives. */
static final class RequireNonNull {
@BeforeTemplate
T before(T object) {
return checkNotNull(object);
}
@AfterTemplate
@UseImportPolicy(STATIC_IMPORT_ALWAYS)
T after(T object) {
return requireNonNull(object);
}
}
/** Prefer {@link Objects#requireNonNull(Object)} over more verbose alternatives. */
static final class RequireNonNullStatement {
@BeforeTemplate
@SuppressWarnings("java:S1695" /* This violation will be rewritten. */)
void before(T object) {
if (object == null) {
throw new NullPointerException();
}
}
@AfterTemplate
@UseImportPolicy(STATIC_IMPORT_ALWAYS)
void after(T object) {
requireNonNull(object);
}
}
/** Prefer {@link Objects#requireNonNull(Object, String)} over non-JDK alternatives. */
static final class RequireNonNullWithMessage {
@BeforeTemplate
T before(T object, String message) {
return checkNotNull(object, message);
}
@AfterTemplate
@UseImportPolicy(STATIC_IMPORT_ALWAYS)
T after(T object, String message) {
return requireNonNull(object, message);
}
}
/** Prefer {@link Objects#requireNonNull(Object, String)} over more verbose alternatives. */
static final class RequireNonNullWithMessageStatement {
@BeforeTemplate
@SuppressWarnings("java:S1695" /* This violation will be rewritten. */)
void before(T object, String message) {
if (object == null) {
throw new NullPointerException(message);
}
}
@AfterTemplate
@UseImportPolicy(STATIC_IMPORT_ALWAYS)
void after(T object, String message) {
requireNonNull(object, message);
}
}
/**
* Prefer {@link Preconditions#checkPositionIndex(int, int)} over less descriptive or more verbose
* alternatives.
*/
static final class CheckPositionIndex {
@BeforeTemplate
void before(int index, int size) {
if (index < 0 || index > size) {
throw new IndexOutOfBoundsException();
}
}
@AfterTemplate
@UseImportPolicy(STATIC_IMPORT_ALWAYS)
void after(int index, int size) {
checkPositionIndex(index, size);
}
}
/**
* Prefer {@link Preconditions#checkPositionIndex(int, int, String)} over less descriptive or more
* verbose alternatives.
*/
static final class CheckPositionIndexWithMessage {
@BeforeTemplate
void before(int index, int size, String message) {
if (index < 0 || index > size) {
throw new IndexOutOfBoundsException(message);
}
}
@AfterTemplate
@UseImportPolicy(STATIC_IMPORT_ALWAYS)
void after(int index, int size, String message) {
checkPositionIndex(index, size, message);
}
}
/** Prefer {@link Preconditions#checkState(boolean)} over more verbose alternatives. */
static final class CheckState {
@BeforeTemplate
void before(boolean condition) {
if (condition) {
throw new IllegalStateException();
}
}
@AfterTemplate
@UseImportPolicy(STATIC_IMPORT_ALWAYS)
void after(boolean condition) {
checkState(!condition);
}
}
/** Prefer {@link Preconditions#checkState(boolean, Object)} over more verbose alternatives. */
static final class CheckStateWithMessage {
@BeforeTemplate
void before(boolean condition, String message) {
if (condition) {
throw new IllegalStateException(message);
}
}
@AfterTemplate
@UseImportPolicy(STATIC_IMPORT_ALWAYS)
void after(boolean condition, String message) {
checkState(!condition, message);
}
}
}