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Assert.java
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270 lines (229 loc) · 7.68 KB
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package graphql;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;
import java.util.Collection;
import java.util.function.Supplier;
import static java.lang.String.format;
@SuppressWarnings("TypeParameterUnusedInFormals")
@Internal
@NullMarked
public class Assert {
public static <T> T assertNotNullWithNPE(T object, Supplier<String> msg) {
if (object != null) {
return object;
}
throw new NullPointerException(msg.get());
}
public static <T> T assertNotNullWithNPE(T object, String constantMsg) {
if (object != null) {
return object;
}
throw new NullPointerException(constantMsg);
}
@Contract("null -> fail")
public static <T> T assertNotNull(@Nullable T object) {
if (object != null) {
return object;
}
return throwAssert("Object required to be not null");
}
@Contract("null,_ -> fail")
public static <T> T assertNotNull(@Nullable T object, Supplier<String> msg) {
if (object != null) {
return object;
}
return throwAssert(msg.get());
}
@Contract("null,_ -> fail")
public static <T> T assertNotNull(@Nullable T object, String constantMsg) {
if (object != null) {
return object;
}
return throwAssert(constantMsg);
}
@Contract("null,_,_ -> fail")
public static <T> T assertNotNull(@Nullable T object, String msgFmt, Object arg1) {
if (object != null) {
return object;
}
return throwAssert(msgFmt, arg1);
}
@Contract("null,_,_,_ -> fail")
public static <T> T assertNotNull(@Nullable T object, String msgFmt, Object arg1, Object arg2) {
if (object != null) {
return object;
}
return throwAssert(msgFmt, arg1, arg2);
}
@Contract("null,_,_,_,_ -> fail")
public static <T> T assertNotNull(@Nullable T object, String msgFmt, Object arg1, Object arg2, Object arg3) {
if (object != null) {
return object;
}
return throwAssert(msgFmt, arg1, arg2, arg3);
}
@Contract("!null,_ -> fail")
public static <T> void assertNull(@Nullable T object, Supplier<String> msg) {
if (object == null) {
return;
}
throwAssert(msg.get());
}
@Contract("!null,_ -> fail")
public static <T> void assertNull(@Nullable T object, String constantMsg) {
if (object == null) {
return;
}
throwAssert(constantMsg);
}
@Contract("!null -> fail")
public static <T> void assertNull(@Nullable Object object) {
if (object == null) {
return;
}
throwAssert("Object required to be null");
}
@Contract("-> fail")
public static <T> T assertNeverCalled() {
return throwAssert("Should never been called");
}
@Contract("_,_-> fail")
public static <T> T assertShouldNeverHappen(String format, Object... args) {
return throwAssert("Internal error: should never happen: %s", format(format, args));
}
@Contract("-> fail")
public static <T> T assertShouldNeverHappen() {
return throwAssert("Internal error: should never happen");
}
public static <T> Collection<T> assertNotEmpty(Collection<T> collection) {
if (collection == null || collection.isEmpty()) {
throwAssert("collection must be not null and not empty");
}
return collection;
}
// @Contract("null,_-> fail")
public static <T> Collection<T> assertNotEmpty(Collection<T> collection, Supplier<String> msg) {
if (collection == null || collection.isEmpty()) {
throwAssert(msg.get());
}
return collection;
}
public static <T> Collection<T> assertNotEmpty(Collection<T> collection, String constantMsg) {
if (collection == null || collection.isEmpty()) {
throwAssert(constantMsg);
}
return collection;
}
public static void assertTrue(boolean condition, Supplier<String> msg) {
if (condition) {
return;
}
throwAssert(msg.get());
}
public static void assertTrue(boolean condition) {
if (condition) {
return;
}
throwAssert("condition expected to be true");
}
public static void assertTrue(boolean condition, String constantMsg) {
if (condition) {
return;
}
throwAssert(constantMsg);
}
public static void assertTrue(boolean condition, String msgFmt, Object arg1) {
if (condition) {
return;
}
throwAssert(msgFmt, arg1);
}
public static void assertTrue(boolean condition, String msgFmt, Object arg1, Object arg2) {
if (condition) {
return;
}
throwAssert(msgFmt, arg1, arg2);
}
public static void assertTrue(boolean condition, String msgFmt, Object arg1, Object arg2, Object arg3) {
if (condition) {
return;
}
throwAssert(msgFmt, arg1, arg2, arg3);
}
public static void assertFalse(boolean condition, Supplier<String> msg) {
if (!condition) {
return;
}
throwAssert(msg.get());
}
public static void assertFalse(boolean condition) {
if (!condition) {
return;
}
throwAssert("condition expected to be false");
}
public static void assertFalse(boolean condition, String constantMsg) {
if (!condition) {
return;
}
throwAssert(constantMsg);
}
public static void assertFalse(boolean condition, String msgFmt, Object arg1) {
if (!condition) {
return;
}
throwAssert(msgFmt, arg1);
}
public static void assertFalse(boolean condition, String msgFmt, Object arg1, Object arg2) {
if (!condition) {
return;
}
throwAssert(msgFmt, arg1, arg2);
}
public static void assertFalse(boolean condition, String msgFmt, Object arg1, Object arg2, Object arg3) {
if (!condition) {
return;
}
throwAssert(msgFmt, arg1, arg2, arg3);
}
private static final String invalidNameErrorMessage = "Name must be non-null, non-empty and match [_A-Za-z][_0-9A-Za-z]* - was '%s'";
/**
* Validates that the Lexical token name matches the current spec.
* currently non null, non empty,
*
* @param name - the name to be validated.
*
* @return the name if valid, or AssertException if invalid.
*/
public static String assertValidName(@Nullable String name) {
if (name != null && isValidName(name)) {
return name;
}
return throwAssert(invalidNameErrorMessage, String.valueOf(name));
}
/**
* Fast character-by-character validation without regex.
* Checks if name matches [_A-Za-z][_0-9A-Za-z]*
*/
private static boolean isValidName(String name) {
if (name.isEmpty()) {
return false;
}
// First character must be [_A-Za-z]
char first = name.charAt(0);
if (!(first == '_' || (first >= 'A' && first <= 'Z') || (first >= 'a' && first <= 'z'))) {
return false;
}
// Remaining characters must be [_0-9A-Za-z]
for (int i = 1; i < name.length(); i++) {
char c = name.charAt(i);
if (!(c == '_' || (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z'))) {
return false;
}
}
return true;
}
private static <T> T throwAssert(String format, Object... args) {
throw new AssertException(format(format, args));
}
}