feat(language): implement isSupertype

Author: ObserverOfTime

scripts/jextract.ps1

@@ -174,6 +174,7 @@ $env:package = 'io.github.treesitter.jtreesitter.internal'
     --include-constant TSSymbolTypeAnonymous `
     --include-constant TSSymbolTypeAuxiliary `
     --include-constant TSSymbolTypeRegular `
+    --include-constant TSSymbolTypeSupertype `
     --header-class-name TreeSitter `
     --output "$($args[1])/generated-sources/jextract" `
     -t $env:package `

scripts/jextract.sh

@@ -175,6 +175,7 @@ exec jextract \
     --include-constant TSSymbolTypeAnonymous \
     --include-constant TSSymbolTypeAuxiliary \
     --include-constant TSSymbolTypeRegular \
+    --include-constant TSSymbolTypeSupertype \
     --header-class-name TreeSitter \
     --output "$2"/generated-sources/jextract \
     -t "$package" \

src/main/java/io/github/treesitter/jtreesitter/Language.java

@@ -133,6 +133,11 @@ public boolean isVisible(@Unsigned short symbol) {
         return ts_language_symbol_type(self, symbol) <= TSSymbolTypeAnonymous();
     }
 
+    /** Check if the node for the given numerical ID is a supertype. */
+    public boolean isSupertype(@Unsigned short symbol) {
+        return ts_language_symbol_type(self, symbol) == TSSymbolTypeSupertype();
+    }
+
     /** Get the field name for the given numerical id. */
     public @Nullable String getFieldNameForId(@Unsigned short id) {
         var name = ts_language_field_name_for_id(self, id);

src/main/java/io/github/treesitter/jtreesitter/Node.java

@@ -325,7 +325,7 @@ public List<Node> getChildrenByFieldName(String name) {
     public @Nullable String getFieldNameForNamedChild(@Unsigned int index) throws IndexOutOfBoundsException {
         if (index >= getChildCount()) {
             throw new IndexOutOfBoundsException(
-                "Child index %s is out of bounds".formatted(Integer.toUnsignedString(index)));
+                    "Child index %s is out of bounds".formatted(Integer.toUnsignedString(index)));
         }
         var segment = ts_node_field_name_for_named_child(self, index);
         return segment.equals(MemorySegment.NULL) ? null : segment.getString(0);

src/test/java/io/github/treesitter/jtreesitter/LanguageTest.java

@@ -56,6 +56,11 @@ void isVisible() {
         assertTrue(language.isVisible((short) 1));
     }
 
+    @Test
+    void isSupertype() {
+        assertFalse(language.isSupertype((short) 1));
+    }
+
     @Test
     void getFieldNameForId() {
         assertNotNull(language.getFieldNameForId((short) 20));