Skip to content

Implement static class initializer blocks #144

New issue

Have a question about this project? # for a free GitHub account to open an issue and contact its maintainers and the community.

#

By clicking “#”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? # to your account

Merged
merged 1 commit into from
Nov 26, 2023
Merged

Implement static class initializer blocks #144

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
71 changes: 65 additions & 6 deletions quickjs.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -17820,6 +17820,7 @@ typedef enum JSParseFunctionEnum {
JS_PARSE_FUNC_GETTER,
JS_PARSE_FUNC_SETTER,
JS_PARSE_FUNC_METHOD,
JS_PARSE_FUNC_CLASS_STATIC_INIT,
JS_PARSE_FUNC_CLASS_CONSTRUCTOR,
JS_PARSE_FUNC_DERIVED_CLASS_CONSTRUCTOR,
} JSParseFunctionEnum;
Expand Down Expand Up @@ -18688,7 +18689,13 @@ static __exception int next_token(JSParseState *s)
s->token.u.ident.atom = atom;
s->token.u.ident.has_escape = ident_has_escape;
s->token.u.ident.is_reserved = FALSE;
if (s->token.u.ident.atom <= JS_ATOM_LAST_KEYWORD ||
// TODO(bnoordhuis) accept await when used in a function expression
// inside the static initializer block
if (s->cur_func->func_type == JS_PARSE_FUNC_CLASS_STATIC_INIT &&
(atom == JS_ATOM_arguments || atom == JS_ATOM_await)) {
s->token.u.ident.is_reserved = TRUE;
s->token.val = TOK_IDENT;
} else if (s->token.u.ident.atom <= JS_ATOM_LAST_KEYWORD ||
(s->token.u.ident.atom <= JS_ATOM_LAST_STRICT_KEYWORD &&
(s->cur_func->js_mode & JS_MODE_STRICT)) ||
(s->token.u.ident.atom == JS_ATOM_yield &&
Expand Down Expand Up @@ -20836,6 +20843,44 @@ static __exception int js_parse_class(JSParseState *s, BOOL is_class_expr,
if (is_static) {
if (next_token(s))
goto fail;
if (s->token.val == '{') {
ClassFieldsDef *cf = &class_fields[is_static];
if (!cf->fields_init_fd)
if (emit_class_init_start(s, cf))
goto fail;
s->cur_func = cf->fields_init_fd;
// stack is now: <empty>
JSFunctionDef *init;
if (js_parse_function_decl2(s, JS_PARSE_FUNC_CLASS_STATIC_INIT,
JS_FUNC_NORMAL, JS_ATOM_NULL,
s->token.ptr, s->token.line_num,
JS_PARSE_EXPORT_NONE, &init) < 0) {
goto fail;
}
// stack is now: fclosure
push_scope(s);
emit_op(s, OP_scope_get_var);
emit_atom(s, JS_ATOM_this);
emit_u16(s, 0);
// stack is now: fclosure this
if (class_name != JS_ATOM_NULL) {
// TODO(bnoordhuis) pass as argument to init method?
emit_op(s, OP_dup);
emit_op(s, OP_scope_put_var_init);
emit_atom(s, class_name);
emit_u16(s, s->cur_func->scope_level);
}
emit_op(s, OP_swap);
// stack is now: this fclosure
emit_op(s, OP_call_method);
emit_u16(s, 0);
// stack is now: returnvalue
emit_op(s, OP_drop);
// stack is now: <empty>
pop_scope(s);
s->cur_func = s->cur_func->parent;
continue;
}
/* allow "static" field name */
if (s->token.val == ';' || s->token.val == '=') {
is_static = FALSE;
Expand Down Expand Up @@ -24085,6 +24130,10 @@ static __exception int js_parse_statement_or_decl(JSParseState *s,
js_parse_error(s, "return not in a function");
goto fail;
}
if (s->cur_func->func_type == JS_PARSE_FUNC_CLASS_STATIC_INIT) {
js_parse_error(s, "return in a static initializer block");
goto fail;
}
if (next_token(s))
goto fail;
if (s->token.val != ';' && s->token.val != '}' && !s->got_lf) {
Expand Down Expand Up @@ -30646,7 +30695,9 @@ static __exception int js_parse_function_decl2(JSParseState *s,
(func_kind & JS_FUNC_GENERATOR)) ||
(s->token.u.ident.atom == JS_ATOM_await &&
func_type == JS_PARSE_FUNC_EXPR &&
(func_kind & JS_FUNC_ASYNC))) {
(func_kind & JS_FUNC_ASYNC)) ||
(s->token.u.ident.atom == JS_ATOM_await &&
func_type == JS_PARSE_FUNC_CLASS_STATIC_INIT)) {
return js_parse_error_reserved_identifier(s);
}
}
Expand Down Expand Up @@ -30740,14 +30791,20 @@ static __exception int js_parse_function_decl2(JSParseState *s,
func_type == JS_PARSE_FUNC_SETTER ||
func_type == JS_PARSE_FUNC_CLASS_CONSTRUCTOR ||
func_type == JS_PARSE_FUNC_DERIVED_CLASS_CONSTRUCTOR);
fd->has_arguments_binding = (func_type != JS_PARSE_FUNC_ARROW);
fd->has_arguments_binding = (func_type != JS_PARSE_FUNC_ARROW &&
func_type != JS_PARSE_FUNC_CLASS_STATIC_INIT);
fd->has_this_binding = fd->has_arguments_binding;
fd->is_derived_class_constructor = (func_type == JS_PARSE_FUNC_DERIVED_CLASS_CONSTRUCTOR);
if (func_type == JS_PARSE_FUNC_ARROW) {
fd->new_target_allowed = fd->parent->new_target_allowed;
fd->super_call_allowed = fd->parent->super_call_allowed;
fd->super_allowed = fd->parent->super_allowed;
fd->arguments_allowed = fd->parent->arguments_allowed;
} else if (func_type == JS_PARSE_FUNC_CLASS_STATIC_INIT) {
fd->new_target_allowed = TRUE; // although new.target === undefined
fd->super_call_allowed = FALSE;
fd->super_allowed = TRUE;
fd->arguments_allowed = FALSE;
} else {
fd->new_target_allowed = TRUE;
fd->super_call_allowed = fd->is_derived_class_constructor;
Expand Down Expand Up @@ -30785,7 +30842,7 @@ static __exception int js_parse_function_decl2(JSParseState *s,
if (add_arg(ctx, fd, name) < 0)
goto fail;
fd->defined_arg_count = 1;
} else {
} else if (func_type != JS_PARSE_FUNC_CLASS_STATIC_INIT) {
if (s->token.val == '(') {
int skip_bits;
/* if there is an '=' inside the parameter list, we
Expand Down Expand Up @@ -31005,8 +31062,10 @@ static __exception int js_parse_function_decl2(JSParseState *s,
}
}

if (js_parse_expect(s, '{'))
goto fail;
// js_parse_class() already consumed the '{'
if (func_type != JS_PARSE_FUNC_CLASS_STATIC_INIT)
if (js_parse_expect(s, '{'))
goto fail;

if (js_parse_directives(s))
goto fail;
Expand Down
2 changes: 1 addition & 1 deletion test262.conf
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -79,7 +79,7 @@ class-fields-private
class-fields-private-in=skip
class-fields-public
class-methods-private
class-static-block=skip
class-static-block
class-static-fields-private
class-static-fields-public
class-static-methods-private
Expand Down
6 changes: 6 additions & 0 deletions test262_errors.txt
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -92,6 +92,8 @@ test262/test/built-ins/TypedArrayConstructors/internals/Set/key-is-out-of-bounds
test262/test/built-ins/TypedArrayConstructors/internals/Set/key-is-out-of-bounds.js:22: strict mode: Test262Error: Reflect.set(sample, "-1", 1) must return true Expected SameValue(«false», «true») to be true (Testing with Float64Array.)
test262/test/built-ins/TypedArrayConstructors/internals/Set/tonumber-value-detached-buffer.js:39: Test262Error: Expected SameValue(«false», «true») to be true (Testing with Float64Array.)
test262/test/built-ins/TypedArrayConstructors/internals/Set/tonumber-value-detached-buffer.js:39: strict mode: Test262Error: Expected SameValue(«false», «true») to be true (Testing with Float64Array.)
test262/test/language/expressions/arrow-function/static-init-await-reference.js:12: unexpected error type: Test262: This statement should not be evaluated.
test262/test/language/expressions/arrow-function/static-init-await-reference.js:12: strict mode: unexpected error type: Test262: This statement should not be evaluated.
test262/test/language/expressions/assignment/target-member-computed-reference-null.js:32: Test262Error: Expected a DummyError but got a TypeError
test262/test/language/expressions/assignment/target-member-computed-reference-null.js:32: strict mode: Test262Error: Expected a DummyError but got a TypeError
test262/test/language/expressions/assignment/target-member-computed-reference-undefined.js:32: Test262Error: Expected a DummyError but got a TypeError
Expand Down Expand Up @@ -124,6 +126,10 @@ test262/test/language/expressions/delete/super-property-null-base.js:26: Test262
test262/test/language/expressions/delete/super-property-null-base.js:26: strict mode: Test262Error: Expected a ReferenceError but got a TypeError
test262/test/language/expressions/dynamic-import/usage-from-eval.js:26: TypeError: $DONE() not called
test262/test/language/expressions/dynamic-import/usage-from-eval.js:26: strict mode: TypeError: $DONE() not called
test262/test/language/expressions/function/static-init-await-binding.js:16: SyntaxError: 'await' is a reserved identifier
test262/test/language/expressions/function/static-init-await-binding.js:16: strict mode: SyntaxError: 'await' is a reserved identifier
test262/test/language/expressions/generators/static-init-await-binding.js:16: SyntaxError: 'await' is a reserved identifier
test262/test/language/expressions/generators/static-init-await-binding.js:16: strict mode: SyntaxError: 'await' is a reserved identifier
test262/test/language/expressions/logical-assignment/left-hand-side-private-reference-accessor-property-and.js:60: Test262Error: The expression should evaluate to the result Expected SameValue(«undefined», «false») to be true
test262/test/language/expressions/logical-assignment/left-hand-side-private-reference-accessor-property-and.js:60: strict mode: Test262Error: The expression should evaluate to the result Expected SameValue(«undefined», «false») to be true
test262/test/language/expressions/logical-assignment/left-hand-side-private-reference-accessor-property-nullish.js:59: Test262Error: The expression should evaluate to the result Expected SameValue(«undefined», «1») to be true
Expand Down