示例#1
0
jl_sym_t *jl_symbol(const char *str)
{
    jl_sym_t **pnode;
    jl_sym_t *parent;
    pnode = symtab_lookup(&symtab, str, &parent);
    if (*pnode == NULL) {
        *pnode = mk_symbol(str);
        if (parent != NULL)
            gc_wb(parent, *pnode);
    }
    return *pnode;
}
示例#2
0
void jl_set_nth_field(jl_value_t *v, size_t i, jl_value_t *rhs)
{
    jl_datatype_t *st = (jl_datatype_t*)jl_typeof(v);
    size_t offs = jl_field_offset(st,i);
    if (jl_field_isptr(st,i)) {
        *(jl_value_t**)((char*)v + offs) = rhs;
        if (rhs != NULL) gc_wb(v, rhs);
    }
    else {
        jl_assign_bits((char*)v + offs, rhs);
    }
}
示例#3
0
void jl_set_datatype_super(jl_datatype_t *tt, jl_value_t *super)
{
    if (!jl_is_datatype(super) || !jl_is_abstracttype(super) ||
        tt->name == ((jl_datatype_t*)super)->name ||
        jl_subtype(super,(jl_value_t*)jl_vararg_type,0) ||
        jl_subtype(super,(jl_value_t*)jl_type_type,0)) {
        jl_errorf("invalid subtyping in definition of %s",tt->name->name->name);
    }
    tt->super = (jl_datatype_t*)super;
    gc_wb(tt, tt->super);
    if (jl_tuple_len(tt->parameters) > 0) {
        tt->name->cache = (jl_value_t*)jl_null;
        jl_reinstantiate_inner_types(tt);
    }
}
示例#4
0
static jl_value_t *eval(jl_value_t *e, jl_value_t **locals, size_t nl, size_t ngensym)
{
    if (jl_is_symbol(e)) {
        jl_value_t *v;
        size_t i;
        for(i=0; i < nl; i++) {
            if (locals[i*2] == e) {
                v = locals[i*2+1];
                break;
            }
        }
        if (i >= nl) {
            v = jl_get_global(jl_current_module, (jl_sym_t*)e);
        }
        if (v == NULL) {
            jl_undefined_var_error((jl_sym_t*)e);
        }
        return v;
    }
    if (jl_is_symbolnode(e)) {
        return eval((jl_value_t*)jl_symbolnode_sym(e), locals, nl, ngensym);
    }
    if (jl_is_gensym(e)) {
        ssize_t genid = ((jl_gensym_t*)e)->id;
        if (genid >= ngensym || genid < 0)
            jl_error("access to invalid GenSym location");
        else
            return locals[nl*2 + genid];
    }
    if (jl_is_quotenode(e)) {
        return jl_fieldref(e,0);
    }
    if (jl_is_topnode(e)) {
        jl_sym_t *s = (jl_sym_t*)jl_fieldref(e,0);
        jl_value_t *v = jl_get_global(jl_base_relative_to(jl_current_module),s);
        if (v == NULL)
            jl_undefined_var_error(s);
        return v;
    }
    if (!jl_is_expr(e)) {
        if (jl_is_globalref(e)) {
            jl_value_t *gfargs[2] = {(jl_value_t*)jl_globalref_mod(e), (jl_value_t*)jl_globalref_name(e)};
            return jl_f_get_field(NULL, gfargs, 2);
        }
        if (jl_is_lambda_info(e)) {
            jl_lambda_info_t *li = (jl_lambda_info_t*)e;
            if (jl_boot_file_loaded && li->ast && jl_is_expr(li->ast)) {
                li->ast = jl_compress_ast(li, li->ast);
                gc_wb(li, li->ast);
            }
            return (jl_value_t*)jl_new_closure(NULL, (jl_value_t*)jl_emptysvec, li);
        }
        if (jl_is_linenode(e)) {
            jl_lineno = jl_linenode_line(e);
        }
        if (jl_is_newvarnode(e)) {
            jl_value_t *var = jl_fieldref(e,0);
            assert(!jl_is_gensym(var));
            assert(jl_is_symbol(var));
            for(size_t i=0; i < nl; i++) {
                if (locals[i*2] == var) {
                    locals[i*2+1] = NULL;
                    break;
                }
            }
            return (jl_value_t*)jl_nothing;
        }
        return e;
    }
    jl_expr_t *ex = (jl_expr_t*)e;
    jl_value_t **args = (jl_value_t**)jl_array_data(ex->args);
    size_t nargs = jl_array_len(ex->args);
    if (ex->head == call_sym ||  ex->head == call1_sym) {
        if (jl_is_lambda_info(args[0])) {
            // directly calling an inner function ("let")
            jl_lambda_info_t *li = (jl_lambda_info_t*)args[0];
            if (jl_is_expr(li->ast) && !jl_lam_vars_captured((jl_expr_t*)li->ast) &&
                !jl_has_intrinsics((jl_expr_t*)li->ast, jl_current_module)) {
                size_t na = nargs-1;
                if (na == 0)
                    return jl_interpret_toplevel_thunk(li);
                jl_array_t *formals = jl_lam_args((jl_expr_t*)li->ast);
                size_t nreq = jl_array_len(formals);
                if (nreq==0 || !jl_is_rest_arg(jl_cellref(formals,nreq-1))) {
                    jl_value_t **ar;
                    JL_GC_PUSHARGS(ar, na*2);
                    for(int i=0; i < na; i++) {
                        ar[i*2+1] = eval(args[i+1], locals, nl, ngensym);
                        gc_wb(ex->args, ar[i*2+1]);
                    }
                    if (na != nreq) {
                        jl_error("wrong number of arguments");
                    }
                    for(int i=0; i < na; i++) {
                        jl_value_t *v = jl_cellref(formals, i);
                        ar[i*2] = (jl_is_gensym(v)) ? v : (jl_value_t*)jl_decl_var(v);
                    }
                    jl_value_t *ret = jl_interpret_toplevel_thunk_with(li, ar, na);
                    JL_GC_POP();
                    return ret;
                }
            }
        }
        jl_function_t *f = (jl_function_t*)eval(args[0], locals, nl, ngensym);
        if (jl_is_func(f))
            return do_call(f, &args[1], nargs-1, NULL, locals, nl, ngensym);
        else
            return do_call(jl_module_call_func(jl_current_module), args, nargs, (jl_value_t*)f, locals, nl, ngensym);
    }
    else if (ex->head == assign_sym) {
        jl_value_t *sym = args[0];
        jl_value_t *rhs = eval(args[1], locals, nl, ngensym);
        if (jl_is_gensym(sym)) {
            ssize_t genid = ((jl_gensym_t*)sym)->id;
            if (genid >= ngensym || genid < 0)
                jl_error("assignment to invalid GenSym location");
            locals[nl*2 + genid] = rhs;
            gc_wb(jl_current_module, rhs); // not sure about jl_current_module
            return rhs;
        }
        assert(jl_is_symbol(sym));
        size_t i;
        for (i=0; i < nl; i++) {
            if (locals[i*2] == sym) {
                locals[i*2+1] = rhs;
                gc_wb(jl_current_module, rhs); // not sure about jl_current_module
                return rhs;
            }
        }
        jl_binding_t *b = jl_get_binding_wr(jl_current_module, (jl_sym_t*)sym);
        jl_checked_assignment(b, rhs);
        return rhs;
    }
    else if (ex->head == new_sym) {
        jl_value_t *thetype = eval(args[0], locals, nl, ngensym);
        jl_value_t *v=NULL;
        JL_GC_PUSH2(&thetype, &v);
        assert(jl_is_structtype(thetype));
        v = jl_new_struct_uninit((jl_datatype_t*)thetype);
        for(size_t i=1; i < nargs; i++) {
            jl_set_nth_field(v, i-1, eval(args[i], locals, nl, ngensym));
        }
        JL_GC_POP();
        return v;
    }
    else if (ex->head == null_sym) {
        return (jl_value_t*)jl_nothing;
    }
    else if (ex->head == body_sym) {
        return eval_body(ex->args, locals, nl, ngensym, 0, 0);
    }
    else if (ex->head == exc_sym) {
        return jl_exception_in_transit;
    }
    else if (ex->head == static_typeof_sym) {
        return (jl_value_t*)jl_any_type;
    }
    else if (ex->head == method_sym) {
        jl_sym_t *fname = (jl_sym_t*)args[0];
        jl_value_t **bp=NULL;
        jl_value_t *bp_owner=NULL;
        jl_binding_t *b=NULL;
        jl_value_t *gf=NULL;
        int kw=0;
        if (jl_is_expr(fname)) {
            if (((jl_expr_t*)fname)->head == kw_sym) {
                kw = 1;
                fname = (jl_sym_t*)jl_exprarg(fname, 0);
            }
            gf = eval((jl_value_t*)fname, locals, nl, ngensym);
            if (jl_is_expr(fname))
                fname = (jl_sym_t*)jl_fieldref(jl_exprarg(fname, 2), 0);
            bp = &gf;
            assert(jl_is_symbol(fname));
        }
        else {
            for (size_t i=0; i < nl; i++) {
                if (locals[i*2] == (jl_value_t*)fname) {
                    bp = &locals[i*2+1];
                    break;
                }
            }
            if (bp == NULL) {
                b = jl_get_binding_for_method_def(jl_current_module, fname);
                bp = &b->value;
                bp_owner = (jl_value_t*)jl_current_module;
            }
        }
        jl_value_t *atypes=NULL, *meth=NULL;
        JL_GC_PUSH2(&atypes, &meth);
        atypes = eval(args[1], locals, nl, ngensym);
        if (jl_is_lambda_info(args[2])) {
            jl_check_static_parameter_conflicts((jl_lambda_info_t*)args[2], (jl_svec_t*)jl_svecref(atypes,1), fname);
        }
        meth = eval(args[2], locals, nl, ngensym);
        jl_method_def(fname, bp, bp_owner, b, (jl_svec_t*)atypes, (jl_function_t*)meth, args[3], NULL, kw);
        JL_GC_POP();
        return *bp;
    }
    else if (ex->head == copyast_sym) {
        return jl_copy_ast(eval(args[0], locals, nl, ngensym));
    }
    else if (ex->head == const_sym) {
        jl_value_t *sym = args[0];
        assert(jl_is_symbol(sym));
        for (size_t i=0; i < nl; i++) {
            if (locals[i*2] == sym) {
                return (jl_value_t*)jl_nothing;
            }
        }
        jl_binding_t *b = jl_get_binding_wr(jl_current_module, (jl_sym_t*)sym);
        jl_declare_constant(b);
        return (jl_value_t*)jl_nothing;
    }
    else if (ex->head == global_sym) {
        // create uninitialized mutable binding for "global x" decl
        // TODO: handle type decls
        for (size_t i=0; i < jl_array_len(ex->args); i++) {
            assert(jl_is_symbol(args[i]));
            jl_get_binding_wr(jl_current_module, (jl_sym_t*)args[i]);
        }
        return (jl_value_t*)jl_nothing;
    }
    else if (ex->head == abstracttype_sym) {
        jl_value_t *name = args[0];
        jl_value_t *para = eval(args[1], locals, nl, ngensym);
        jl_value_t *super = NULL;
        jl_value_t *temp = NULL;
        jl_datatype_t *dt = NULL;
        JL_GC_PUSH4(&para, &super, &temp, &dt);
        assert(jl_is_svec(para));
        assert(jl_is_symbol(name));
        dt = jl_new_abstracttype(name, jl_any_type, (jl_svec_t*)para);
        jl_binding_t *b = jl_get_binding_wr(jl_current_module, (jl_sym_t*)name);
        temp = b->value;
        check_can_assign_type(b);
        b->value = (jl_value_t*)dt;
        gc_wb_binding(b, dt);
        super = eval(args[2], locals, nl, ngensym);
        jl_set_datatype_super(dt, super);
        b->value = temp;
        if (temp==NULL || !equiv_type(dt, (jl_datatype_t*)temp)) {
            jl_checked_assignment(b, (jl_value_t*)dt);
        }
        JL_GC_POP();
        return (jl_value_t*)jl_nothing;
    }
    else if (ex->head == bitstype_sym) {
        jl_value_t *name = args[0];
        jl_value_t *super = NULL, *para = NULL, *vnb = NULL, *temp = NULL;
        jl_datatype_t *dt = NULL;
        JL_GC_PUSH4(&para, &super, &temp, &dt);
        assert(jl_is_symbol(name));
        para = eval(args[1], locals, nl, ngensym);
        assert(jl_is_svec(para));
        vnb  = eval(args[2], locals, nl, ngensym);
        if (!jl_is_long(vnb))
            jl_errorf("invalid declaration of bits type %s", ((jl_sym_t*)name)->name);
        int32_t nb = jl_unbox_long(vnb);
        if (nb < 1 || nb>=(1<<23) || (nb&7) != 0)
            jl_errorf("invalid number of bits in type %s",
                      ((jl_sym_t*)name)->name);
        dt = jl_new_bitstype(name, jl_any_type, (jl_svec_t*)para, nb);
        jl_binding_t *b = jl_get_binding_wr(jl_current_module, (jl_sym_t*)name);
        temp = b->value;
        check_can_assign_type(b);
        b->value = (jl_value_t*)dt;
        gc_wb_binding(b, dt);
        super = eval(args[3], locals, nl, ngensym);
        jl_set_datatype_super(dt, super);
        b->value = temp;
        if (temp==NULL || !equiv_type(dt, (jl_datatype_t*)temp)) {
            jl_checked_assignment(b, (jl_value_t*)dt);
        }
        JL_GC_POP();
        return (jl_value_t*)jl_nothing;
    }
    else if (ex->head == compositetype_sym) {
        jl_value_t *name = args[0];
        assert(jl_is_symbol(name));
        jl_value_t *para = eval(args[1], locals, nl, ngensym);
        assert(jl_is_svec(para));
        jl_value_t *temp = NULL;
        jl_value_t *super = NULL;
        jl_datatype_t *dt = NULL;
        JL_GC_PUSH4(&para, &super, &temp, &dt);
        temp = eval(args[2], locals, nl, ngensym);  // field names
        dt = jl_new_datatype((jl_sym_t*)name, jl_any_type, (jl_svec_t*)para,
                             (jl_svec_t*)temp, NULL,
                             0, args[5]==jl_true ? 1 : 0, jl_unbox_long(args[6]));

        jl_binding_t *b = jl_get_binding_wr(jl_current_module, (jl_sym_t*)name);
        temp = b->value;  // save old value
        // temporarily assign so binding is available for field types
        check_can_assign_type(b);
        b->value = (jl_value_t*)dt;
        gc_wb_binding(b,dt);

        JL_TRY {
            // operations that can fail
            inside_typedef = 1;
            dt->types = (jl_svec_t*)eval(args[4], locals, nl, ngensym);
            gc_wb(dt, dt->types);
            inside_typedef = 0;
            //jl_check_type_tuple(dt->types, dt->name->name, "type definition");
            super = eval(args[3], locals, nl, ngensym);
            jl_set_datatype_super(dt, super);
        }
        JL_CATCH {
            b->value = temp;
            jl_rethrow();
        }
        for(size_t i=0; i < jl_svec_len(para); i++) {
            ((jl_tvar_t*)jl_svecref(para,i))->bound = 0;
        }
        jl_compute_field_offsets(dt);
        if (para == (jl_value_t*)jl_emptysvec && jl_is_datatype_singleton(dt))
            dt->instance = newstruct(dt);

        b->value = temp;
        if (temp==NULL || !equiv_type(dt, (jl_datatype_t*)temp)) {
            jl_checked_assignment(b, (jl_value_t*)dt);
        }
        else {
            // TODO: remove all old ctors and set temp->name->ctor_factory = dt->name->ctor_factory
        }

        JL_GC_POP();
        return (jl_value_t*)jl_nothing;
    }
示例#5
0
jl_value_t *jl_eval_module_expr(jl_expr_t *ex)
{
    static arraylist_t module_stack;
    static int initialized=0;
    if (!initialized) {
        arraylist_new(&module_stack, 0);
        initialized = 1;
    }
    assert(ex->head == module_sym);
    jl_module_t *last_module = jl_current_module;
    if (jl_array_len(ex->args) != 3 || !jl_is_expr(jl_exprarg(ex,2))) {
        jl_error("syntax: malformed module expression");
    }
    int std_imports = (jl_exprarg(ex,0)==jl_true);
    jl_sym_t *name = (jl_sym_t*)jl_exprarg(ex, 1);
    if (!jl_is_symbol(name)) {
        jl_type_error("module", (jl_value_t*)jl_sym_type, (jl_value_t*)name);
    }
    jl_module_t *parent_module = jl_current_module;
    jl_binding_t *b = jl_get_binding_wr(parent_module, name);
    jl_declare_constant(b);
    if (b->value != NULL) {
        jl_printf(JL_STDERR, "Warning: replacing module %s\n", name->name);
    }
    jl_module_t *newm = jl_new_module(name);
    newm->parent = parent_module;
    b->value = (jl_value_t*)newm;

    gc_wb(parent_module, newm);

    if (parent_module == jl_main_module && name == jl_symbol("Base")) {
        // pick up Base module during bootstrap
        jl_old_base_module = jl_base_module;
        jl_base_module = newm;
        // reinitialize global variables
        // to pick up new types from Base
        jl_errorexception_type = NULL;
        jl_argumenterror_type = NULL;
        jl_typeerror_type = NULL;
        jl_methoderror_type = NULL;
        jl_loaderror_type = NULL;
        jl_current_task->tls = jl_nothing;
    }
    // export all modules from Main
    if (parent_module == jl_main_module)
        jl_module_export(jl_main_module, name);

    // add standard imports unless baremodule
    if (std_imports) {
        if (jl_base_module != NULL) {
            jl_add_standard_imports(newm);
        }
    }

    JL_GC_PUSH1(&last_module);
    jl_module_t *task_last_m = jl_current_task->current_module;
    jl_current_task->current_module = jl_current_module = newm;

    jl_array_t *exprs = ((jl_expr_t*)jl_exprarg(ex, 2))->args;
    JL_TRY {
        for(int i=0; i < jl_array_len(exprs); i++) {
            // process toplevel form
            jl_value_t *form = jl_cellref(exprs, i);
            (void)jl_toplevel_eval_flex(form, 1);
        }
    }
    JL_CATCH {
        jl_current_module = last_module;
        jl_current_task->current_module = task_last_m;
        jl_rethrow();
    }
    JL_GC_POP();
    jl_current_module = last_module;
    jl_current_task->current_module = task_last_m;

#if 0
    // some optional post-processing steps
    size_t i;
    void **table = newm->bindings.table;
    for(i=1; i < newm->bindings.size; i+=2) {
        if (table[i] != HT_NOTFOUND) {
            jl_binding_t *b = (jl_binding_t*)table[i];
            // remove non-exported macros
            if (b->name->name[0]=='@' && !b->exportp && b->owner==newm)
                b->value = NULL;
            // error for unassigned exports
            /*
            if (b->exportp && b->owner==newm && b->value==NULL)
                jl_errorf("identifier %s exported from %s is not initialized",
                          b->name->name, newm->name->name);
            */
        }
    }
#endif

    arraylist_push(&module_stack, newm);

    if (jl_current_module == jl_main_module) {
        while (module_stack.len > 0) {
            jl_module_load_time_initialize((jl_module_t *) arraylist_pop(&module_stack));
        }
    }

    return jl_nothing;
}
示例#6
0
DLLEXPORT jl_value_t *jl_method_def(jl_sym_t *name, jl_value_t **bp, jl_value_t *bp_owner,
                                    jl_binding_t *bnd,
                                    jl_tuple_t *argtypes, jl_function_t *f, jl_value_t *isstaged,
                                    jl_value_t *call_func, int iskw)
{
    // argtypes is a tuple ((types...), (typevars...))
    jl_tuple_t *t = (jl_tuple_t*)jl_t1(argtypes);
    argtypes = (jl_tuple_t*)jl_t0(argtypes);
    jl_value_t *gf=NULL;
    JL_GC_PUSH3(&gf, &argtypes, &t);

    if (bnd && bnd->value != NULL && !bnd->constp) {
        jl_errorf("cannot define function %s; it already has a value", bnd->name->name);
    }

    if (*bp != NULL) {
        gf = *bp;
        if (!jl_is_gf(gf)) {
            if (jl_is_datatype(gf)) {
                // DataType: define `call`, for backwards compat with outer constructors
                if (call_func == NULL)
                    call_func = (jl_value_t*)jl_module_call_func(jl_current_module);
                size_t na = jl_tuple_len(argtypes);
                jl_tuple_t *newargtypes = jl_alloc_tuple(1 + na);
                JL_GC_PUSH1(&newargtypes);
                size_t i=0;
                if (iskw) {
                    assert(na > 0);
                    // for kw sorter, keep container argument first
                    jl_tupleset(newargtypes, 0, jl_tupleref(argtypes, 0));
                    i++;
                }
                jl_tupleset(newargtypes, i, jl_wrap_Type(gf));
                i++;
                for(; i < na+1; i++) {
                    jl_tupleset(newargtypes, i, jl_tupleref(argtypes, i-1));
                }
                argtypes = newargtypes;
                JL_GC_POP();
                gf = call_func;
                name = call_sym;
                // edit args, insert type first
                if (!jl_is_expr(f->linfo->ast)) {
                    f->linfo->ast = jl_uncompress_ast(f->linfo, f->linfo->ast);
                    gc_wb(f->linfo, f->linfo->ast);
                }
                jl_array_t *al = jl_lam_args((jl_expr_t*)f->linfo->ast);
                if (jl_array_len(al) == 0) {
                    al = jl_alloc_cell_1d(1);
                    jl_exprargset(f->linfo->ast, 0, (jl_value_t*)al);
                }
                else {
                    jl_array_grow_beg(al, 1);
                }
                if (iskw) {
                    jl_cellset(al, 0, jl_cellref(al, 1));
                    jl_cellset(al, 1, (jl_value_t*)jl_gensym());
                }
                else {
                    jl_cellset(al, 0, (jl_value_t*)jl_gensym());
                }
            }
            if (!jl_is_gf(gf)) {
                jl_errorf("cannot define function %s; it already has a value", name->name);
            }
        }
        if (iskw) {
            bp = (jl_value_t**)&((jl_methtable_t*)((jl_function_t*)gf)->env)->kwsorter;
            bp_owner = (jl_value_t*)((jl_function_t*)gf)->env;
            gf = *bp;
        }
    }

    size_t na = jl_tuple_len(argtypes);
    for(size_t i=0; i < na; i++) {
        jl_value_t *elt = jl_tupleref(argtypes,i);
        if (!jl_is_type(elt) && !jl_is_typevar(elt)) {
            jl_lambda_info_t *li = f->linfo;
            jl_exceptionf(jl_argumenterror_type, "invalid type for argument %s in method definition for %s at %s:%d",
                          jl_lam_argname(li,i)->name, name->name, li->file->name, li->line);
        }
    }

    int ishidden = !!strchr(name->name, '#');
    for(size_t i=0; i < jl_tuple_len(t); i++) {
        jl_value_t *tv = jl_tupleref(t,i);
        if (!jl_is_typevar(tv))
            jl_type_error_rt(name->name, "method definition", (jl_value_t*)jl_tvar_type, tv);
        if (!ishidden && !type_contains((jl_value_t*)argtypes, tv)) {
            jl_printf(JL_STDERR, "Warning: static parameter %s does not occur in signature for %s",
                      ((jl_tvar_t*)tv)->name->name, name->name);
            print_func_loc(JL_STDERR, f->linfo);
            jl_printf(JL_STDERR, ".\nThe method will not be callable.\n");
        }
    }

    if (bnd) {
        bnd->constp = 1;
    }
    if (*bp == NULL) {
        gf = (jl_value_t*)jl_new_generic_function(name);
        *bp = gf;
        if (bp_owner) gc_wb(bp_owner, gf);
    }
    assert(jl_is_function(f));
    assert(jl_is_tuple(argtypes));
    assert(jl_is_tuple(t));

    jl_add_method((jl_function_t*)gf, argtypes, f, t, isstaged == jl_true);
    if (jl_boot_file_loaded &&
        f->linfo && f->linfo->ast && jl_is_expr(f->linfo->ast)) {
        jl_lambda_info_t *li = f->linfo;
        li->ast = jl_compress_ast(li, li->ast);
        gc_wb(li, li->ast);
    }
    JL_GC_POP();
    return gf;
}
示例#7
0
jl_datatype_t *jl_new_datatype(jl_sym_t *name, jl_datatype_t *super,
                               jl_svec_t *parameters,
                               jl_svec_t *fnames, jl_svec_t *ftypes,
                               int abstract, int mutabl, int ninitialized)
{
    jl_datatype_t *t=NULL;
    jl_typename_t *tn=NULL;
    JL_GC_PUSH2(&t, &tn);

    if (!jl_boot_file_loaded && jl_is_symbol(name)) {
        // hack to avoid making two versions of basic types needed
        // during bootstrapping
        if (!strcmp(((jl_sym_t*)name)->name, "Int32"))
            t = jl_int32_type;
        else if (!strcmp(((jl_sym_t*)name)->name, "Int64"))
            t = jl_int64_type;
        else if (!strcmp(((jl_sym_t*)name)->name, "Bool"))
            t = jl_bool_type;
    }
    if (t == NULL)
        t = jl_new_uninitialized_datatype(jl_svec_len(fnames));
    else
        tn = t->name;
    // init before possibly calling jl_new_typename
    t->super = super;
    if (super != NULL) gc_wb(t, t->super);
    t->parameters = parameters;
    gc_wb(t, t->parameters);
    t->types = ftypes;
    if (ftypes != NULL) gc_wb(t, t->types);
    t->abstract = abstract;
    t->mutabl = mutabl;
    t->pointerfree = 0;
    t->ninitialized = ninitialized;
    t->instance = NULL;
    t->struct_decl = NULL;
    t->ditype = NULL;
    t->size = 0;
    t->alignment = 1;

    if (tn == NULL) {
        t->name = NULL;
        if (jl_is_typename(name))
            tn = (jl_typename_t*)name;
        else
            tn = jl_new_typename((jl_sym_t*)name);
        t->name = tn;
        gc_wb(t, t->name);
    }
    t->name->names = fnames;
    gc_wb(t->name, t->name->names);

    if (t->name->primary == NULL) {
        t->name->primary = (jl_value_t*)t;
        gc_wb(t->name, t);
    }

    if (abstract || jl_svec_len(parameters) > 0) {
        t->uid = 0;
    }
    else {
        t->uid = jl_assign_type_uid();
        if (t->types != NULL)
            jl_compute_field_offsets(t);
    }
    JL_GC_POP();
    return t;
}