Bump minimum JDK distribution version needed for builds to 24

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ jobs:
 
     strategy:
       matrix:
-        version: [ 18, 19, 20, 21, 22, 23 ]
+        version: [ 24 ]
         vector-length: [ 256, 512 ]
 
     steps:

.github/workflows/publish.yml

@@ -17,11 +17,11 @@ jobs:
 
       - uses: gradle/actions/wrapper-validation@v3
 
-      - name: Set up JDK 18
+      - name: Set up JDK 24
         uses: actions/setup-java@v4
         with:
           distribution: temurin
-          java-version: 18
+          java-version: 24
 
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v3

README.md

@@ -73,7 +73,7 @@ Please remember about specifying the desired version.
 Note that simdjson-java follows the [SemVer specification](https://semver.org/), which means, for example, that a major 
 version of zero indicates initial development, so the library's API should not be considered stable.
 
-We require Java 18 or better.
+We require Java 24 or better.
 
 ## Benchmarks
 

build.gradle

@@ -33,9 +33,9 @@ java {
     // It seems that specifying the minimum supported Java version while allowing the use of newer
     // ones isn't possible in Gradle. To test the library against multiple Java versions, the
     // workaround proposed in https://github.com/gradle/gradle/issues/16256 has been applied:
-    if (!JavaVersion.current().isCompatibleWith(JavaVersion.VERSION_18)) {
+    if (!JavaVersion.current().isCompatibleWith(JavaVersion.VERSION_24)) {
         toolchain {
-            languageVersion = JavaLanguageVersion.of(18)
+            languageVersion = JavaLanguageVersion.of(24)
         }
     }
     withJavadocJar()

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.13-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.3-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

gradlew

@@ -114,7 +114,7 @@ case "$( uname )" in                #(
   NONSTOP* )        nonstop=true ;;
 esac
 
-CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+CLASSPATH="\\\"\\\""
 
 
 # Determine the Java command to use to start the JVM.
@@ -213,7 +213,7 @@ DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 set -- \
         "-Dorg.gradle.appname=$APP_BASE_NAME" \
         -classpath "$CLASSPATH" \
-        org.gradle.wrapper.GradleWrapperMain \
+        -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
         "$@"
 
 # Stop when "xargs" is not available.

gradlew.bat

@@ -70,11 +70,11 @@ goto fail
 :execute
 @rem Setup the command line
 
-set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+set CLASSPATH=
 
 
 @rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
 
 :end
 @rem End local scope for the variables with windows NT shell

src/main/java/org/simdjson/StructuralIndexer.java

@@ -7,7 +7,7 @@
 
 import static jdk.incubator.vector.ByteVector.SPECIES_256;
 import static jdk.incubator.vector.ByteVector.SPECIES_512;
-import static jdk.incubator.vector.VectorOperators.UNSIGNED_LE;
+import static jdk.incubator.vector.VectorOperators.ULE;
 
 class StructuralIndexer {
 
@@ -88,8 +88,8 @@ private void index256(byte[] buffer, int length) {
                 escaped = (EVEN_BITS_MASK ^ invertMask) & followsEscape;
             }
 
-            long unescaped0 = chunk0.compare(UNSIGNED_LE, LAST_CONTROL_CHARACTER).toLong();
-            long unescaped1 = chunk1.compare(UNSIGNED_LE, LAST_CONTROL_CHARACTER).toLong();
+            long unescaped0 = chunk0.compare(ULE, LAST_CONTROL_CHARACTER).toLong();
+            long unescaped1 = chunk1.compare(ULE, LAST_CONTROL_CHARACTER).toLong();
             long unescaped = unescaped0 | (unescaped1 << 32);
 
             long quote0 = chunk0.eq(QUOTE).toLong();
@@ -148,8 +148,8 @@ private void index256(byte[] buffer, int length) {
             escaped = (EVEN_BITS_MASK ^ invertMask) & followsEscape;
         }
 
-        long unescaped0 = chunk0.compare(UNSIGNED_LE, LAST_CONTROL_CHARACTER).toLong();
-        long unescaped1 = chunk1.compare(UNSIGNED_LE, LAST_CONTROL_CHARACTER).toLong();
+        long unescaped0 = chunk0.compare(ULE, LAST_CONTROL_CHARACTER).toLong();
+        long unescaped1 = chunk1.compare(ULE, LAST_CONTROL_CHARACTER).toLong();
         long unescaped = unescaped0 | (unescaped1 << 32);
 
         long quote0 = chunk0.eq(QUOTE).toLong();
@@ -228,7 +228,7 @@ private void index512(byte[] buffer, int length) {
                 escaped = (EVEN_BITS_MASK ^ invertMask) & followsEscape;
             }
 
-            long unescaped = chunk.compare(UNSIGNED_LE, LAST_CONTROL_CHARACTER).toLong();
+            long unescaped = chunk.compare(ULE, LAST_CONTROL_CHARACTER).toLong();
             long quote = chunk.eq(QUOTE).toLong() & ~escaped;
             long inString = prefixXor(quote) ^ prevInString;
             prevInString = inString >> 63;
@@ -271,7 +271,7 @@ private void index512(byte[] buffer, int length) {
             escaped = (EVEN_BITS_MASK ^ invertMask) & followsEscape;
         }
 
-        long unescaped = chunk.compare(UNSIGNED_LE, LAST_CONTROL_CHARACTER).toLong();
+        long unescaped = chunk.compare(ULE, LAST_CONTROL_CHARACTER).toLong();
         long quote = chunk.eq(QUOTE).toLong() & ~escaped;
         long inString = prefixXor(quote) ^ prevInString;
         prevInString = inString >> 63;

src/main/java/org/simdjson/Utf8Validator.java

@@ -11,8 +11,8 @@
 import static jdk.incubator.vector.VectorOperators.LSHL;
 import static jdk.incubator.vector.VectorOperators.LSHR;
 import static jdk.incubator.vector.VectorOperators.NE;
-import static jdk.incubator.vector.VectorOperators.UNSIGNED_GE;
-import static jdk.incubator.vector.VectorOperators.UNSIGNED_GT;
+import static jdk.incubator.vector.VectorOperators.UGE;
+import static jdk.incubator.vector.VectorOperators.UGT;
 import static jdk.incubator.vector.VectorShuffle.iota;
 import static org.simdjson.VectorUtils.BYTE_SPECIES;
 import static org.simdjson.VectorUtils.INT_SPECIES;
@@ -65,7 +65,7 @@ static void validate(byte[] buffer, int length) {
             if (chunk.and(ALL_ASCII_MASK).compare(EQ, 0).allTrue()) {
                 errors |= previousIncomplete;
             } else {
-                previousIncomplete = chunk.compare(UNSIGNED_GE, INCOMPLETE_CHECK).toLong();
+                previousIncomplete = chunk.compare(UGE, INCOMPLETE_CHECK).toLong();
                 // Shift the input forward by four bytes to make space for the previous four bytes.
                 // The previous three bytes are required for validation, pulling in the last integer
                 // will give the previous four bytes. The switch to integer vectors is to allow for
@@ -97,13 +97,13 @@ static void validate(byte[] buffer, int length) {
                         .or(chunkWithPreviousFourBytes.lanewise(LSHR, TWO_BYTES_SIZE))
                         .reinterpretAsBytes();
                 // The minimum leading byte of 3-byte sequences is always greater than the maximum leading byte of 2-byte sequences.
-                VectorMask<Byte> is3ByteLead = previousTwoBytes.compare(UNSIGNED_GT, MAX_2_LEADING_BYTE);
+                VectorMask<Byte> is3ByteLead = previousTwoBytes.compare(UGT, MAX_2_LEADING_BYTE);
                 ByteVector previousThreeBytes = chunkAsInts
                         .lanewise(LSHL, THREE_BYTES_SIZE)
                         .or(chunkWithPreviousFourBytes.lanewise(LSHR, Byte.SIZE))
                         .reinterpretAsBytes();
                 // The minimum leading byte of 4-byte sequences is always greater than the maximum leading byte of 3-byte sequences.
-                VectorMask<Byte> is4ByteLead = previousThreeBytes.compare(UNSIGNED_GT, MAX_3_LEADING_BYTE);
+                VectorMask<Byte> is4ByteLead = previousThreeBytes.compare(UGT, MAX_3_LEADING_BYTE);
                 // The firstCheck vector contains 0x80 values on continuation byte indexes.
                 // The leading bytes of 3 and 4-byte sequences should match up with these indexes and zero them out.
                 ByteVector secondCheck = firstCheck.add((byte) 0x80, is3ByteLead.or(is4ByteLead));
@@ -117,7 +117,7 @@ static void validate(byte[] buffer, int length) {
         ByteVector chunk = ByteVector.fromArray(BYTE_SPECIES, buffer, offset, remainingBytes);
         if (!chunk.and(ALL_ASCII_MASK).compare(EQ, 0).allTrue()) {
             IntVector chunkAsInts = chunk.reinterpretAsInts();
-            previousIncomplete = chunk.compare(UNSIGNED_GE, INCOMPLETE_CHECK).toLong();
+            previousIncomplete = chunk.compare(UGE, INCOMPLETE_CHECK).toLong();
             // Shift the input forward by four bytes to make space for the previous four bytes.
             // The previous three bytes are required for validation, pulling in the last integer
             // will give the previous four bytes. The switch to integer vectors is to allow for
@@ -149,13 +149,13 @@ static void validate(byte[] buffer, int length) {
                     .or(chunkWithPreviousFourBytes.lanewise(LSHR, TWO_BYTES_SIZE))
                     .reinterpretAsBytes();
             // The minimum leading byte of 3-byte sequences is always greater than the maximum leading byte of 2-byte sequences.
-            VectorMask<Byte> is3ByteLead = previousTwoBytes.compare(UNSIGNED_GT, MAX_2_LEADING_BYTE);
+            VectorMask<Byte> is3ByteLead = previousTwoBytes.compare(UGT, MAX_2_LEADING_BYTE);
             ByteVector previousThreeBytes = chunkAsInts
                     .lanewise(LSHL, THREE_BYTES_SIZE)
                     .or(chunkWithPreviousFourBytes.lanewise(LSHR, Byte.SIZE))
                     .reinterpretAsBytes();
             // The minimum leading byte of 4-byte sequences is always greater than the maximum leading byte of 3-byte sequences.
-            VectorMask<Byte> is4ByteLead = previousThreeBytes.compare(UNSIGNED_GT, MAX_3_LEADING_BYTE);
+            VectorMask<Byte> is4ByteLead = previousThreeBytes.compare(UGT, MAX_3_LEADING_BYTE);
             // The firstCheck vector contains 0x80 values on continuation byte indexes.
             // The leading bytes of 3 and 4-byte sequences should match up with these indexes and zero them out.
             ByteVector secondCheck = firstCheck.add((byte) 0x80, is3ByteLead.or(is4ByteLead));