graphql-java/src/main/java/graphql/Assert.java at parser-cleanup · graphql-java/graphql-java · GitHub

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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));

}

graphql-java/src/main/java/graphql/Assert.java at parser-cleanup · graphql-java/graphql-java · GitHub

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