diff

Dockerfile

@@ -0,0 +1,7 @@
+FROM ubuntu:noble
+
+RUN apt update && apt install -y pkg-config build-essential autoconf bison re2c \
+                        libxml2-dev libsqlite3-dev cmake gdb
+WORKDIR /app
+
+CMD while true; do sleep 3600; done

Zend/zend_ast.h

@@ -70,6 +70,7 @@ enum _zend_ast_kind {
 	ZEND_AST_ATTRIBUTE_GROUP,
 	ZEND_AST_MATCH_ARM_LIST,
 	ZEND_AST_MODIFIER_LIST,
+	ZEND_AST_GENERIC_TYPE_PARAM_LIST,
 
 	/* 0 child nodes */
 	ZEND_AST_MAGIC_CONST = 0 << ZEND_AST_NUM_CHILDREN_SHIFT,

Zend/zend_compile.c

@@ -9133,7 +9133,7 @@ static void zend_compile_class_decl(znode *result, zend_ast *ast, bool toplevel)
 
 	CG(active_class_entry) = ce;
 
-	if (decl->child[3]) {
+	if (decl->child[3] && decl->child[3]->kind != ZEND_AST_GENERIC_TYPE_PARAM_LIST) {
 		zend_compile_attributes(&ce->attributes, decl->child[3], 0, ZEND_ATTRIBUTE_TARGET_CLASS, 0);
 	}
 

Zend/zend_language_parser.y

@@ -237,6 +237,11 @@ static YYSIZE_T zend_yytnamerr(char*, const char*);
 %token T_COALESCE        "'??'"
 %token T_POW             "'**'"
 %token T_POW_EQUAL       "'**='"
+
+// Generics
+%token T_GENERIC_START "'<'"
+%token T_GENERIC_END "'>'"
+
 /* We need to split the & token in two to avoid a shift/reduce conflict. For T1&$v and T1&T2,
  * with only one token lookahead, bison does not know whether to reduce T1 as a complete type,
  * or shift to continue parsing an intersection type. */
@@ -286,6 +291,8 @@ static YYSIZE_T zend_yytnamerr(char*, const char*);
 %type <ast> function_name non_empty_member_modifiers
 %type <ast> property_hook property_hook_list optional_property_hook_list hooked_property property_hook_body
 %type <ast> optional_parameter_list
+%type <ast> generic_type_parameter_list
+%type <ast> generic_type_parameters
 
 %type <num> returns_ref function fn is_reference is_variadic property_modifiers property_hook_modifiers
 %type <num> method_modifiers class_const_modifiers member_modifier optional_cpp_modifiers
@@ -597,11 +604,21 @@ is_variadic:
 
 class_declaration_statement:
 		class_modifiers T_CLASS { $<num>$ = CG(zend_lineno); }
-		T_STRING extends_from implements_list backup_doc_comment '{' class_statement_list '}'
-			{ $$ = zend_ast_create_decl(ZEND_AST_CLASS, $1, $<num>3, $7, zend_ast_get_str($4), $5, $6, $9, NULL, NULL); }
+		T_STRING generic_type_parameters extends_from implements_list backup_doc_comment '{' class_statement_list '}'
+			{ $$ = zend_ast_create_decl(ZEND_AST_CLASS, $1, $<num>3, $8, zend_ast_get_str($4), $6, $7, $10, $5, NULL); }
 	|	T_CLASS { $<num>$ = CG(zend_lineno); }
-		T_STRING extends_from implements_list backup_doc_comment '{' class_statement_list '}'
-			{ $$ = zend_ast_create_decl(ZEND_AST_CLASS, 0, $<num>2, $6, zend_ast_get_str($3), $4, $5, $8, NULL, NULL); }
+		T_STRING generic_type_parameters extends_from implements_list backup_doc_comment '{' class_statement_list '}'
+			{ $$ = zend_ast_create_decl(ZEND_AST_CLASS, 0, $<num>2, $7, zend_ast_get_str($3), $5, $6, $9, $4, NULL); }
+;
+
+generic_type_parameters:
+    T_GENERIC_START generic_type_parameter_list possible_comma T_GENERIC_END { $$ = $2; }
+    | %empty { $$ = NULL; }
+;
+
+generic_type_parameter_list:
+    T_STRING { $$ = zend_ast_create_list(1, ZEND_AST_GENERIC_TYPE_PARAM_LIST, $1); }
+    | generic_type_parameter_list ',' T_STRING { $$ = zend_ast_list_add($1, $3); }
 ;
 
 class_modifiers:

Zend/zend_language_scanner.l

@@ -1537,6 +1537,30 @@ OPTIONAL_WHITESPACE_OR_COMMENTS ({WHITESPACE}|{MULTI_LINE_COMMENT}|{SINGLE_LINE_
 	RETURN_TOKEN_WITH_IDENT(T_PRINT);
 }
 
+<ST_IN_SCRIPTING>"<"{LABEL}">" {
+    yyless(1);
+    yy_push_state(ST_GENERIC);
+    RETURN_TOKEN(T_GENERIC_START);
+}
+
+<ST_GENERIC>{LABEL} {
+    RETURN_TOKEN_WITH_STR(T_STRING, 0);
+}
+
+<ST_GENERIC>"," {
+    RETURN_TOKEN(',');
+}
+
+<ST_GENERIC>">" {
+    yy_pop_state();
+    RETURN_TOKEN(T_GENERIC_END);
+}
+
+<ST_GENERIC>{WHITESPACE} {
+    HANDLE_NEWLINES(yytext, yyleng);
+    RETURN_TOKEN(T_WHITESPACE);
+}
+
 <ST_IN_SCRIPTING>"class" {
 	RETURN_TOKEN_WITH_IDENT(T_CLASS);
 }

dev.sh

@@ -0,0 +1,2 @@
+docker build -t php-dev-setup .
+docker run --volume .:/app php-dev-setup

ext/tokenizer/tokenizer_data.stub.php

@@ -742,6 +742,16 @@
  * @cvalue T_POW_EQUAL
  */
 const T_POW_EQUAL = UNKNOWN;
+/**
+ * @var int
+ * @cvalue T_GENERIC_START
+ */
+const T_GENERIC_START = UNKNOWN;
+/**
+ * @var int
+ * @cvalue T_GENERIC_END
+ */
+const T_GENERIC_END = UNKNOWN;
 /**
  * @var int
  * @cvalue T_AMPERSAND_FOLLOWED_BY_VAR_OR_VARARG