예제 #1
0
static jl_value_t *eval(jl_value_t *e, interpreter_state *s)
{
    jl_ptls_t ptls = jl_get_ptls_states();
    jl_code_info_t *src = s==NULL ? NULL : s->src;
    if (jl_is_ssavalue(e)) {
        ssize_t id = ((jl_ssavalue_t*)e)->id;
        if (id >= jl_source_nssavalues(src) || id < 0 || s->locals == NULL)
            jl_error("access to invalid SSAValue");
        else
            return s->locals[jl_source_nslots(src) + id];
    }
    if (jl_is_slot(e)) {
        ssize_t n = jl_slot_number(e);
        if (n > jl_source_nslots(src) || n < 1 || s->locals == NULL)
            jl_error("access to invalid slot number");
        jl_value_t *v = s->locals[n-1];
        if (v == NULL)
            jl_undefined_var_error((jl_sym_t*)jl_array_ptr_ref(src->slotnames, n - 1));
        return v;
    }
    if (jl_is_globalref(e)) {
        jl_sym_t *s = jl_globalref_name(e);
        jl_value_t *v = jl_get_global(jl_globalref_mod(e), s);
        if (v == NULL)
            jl_undefined_var_error(s);
        return v;
    }
    if (jl_is_quotenode(e))
        return jl_fieldref(e,0);
    jl_module_t *modu = (s == NULL ? ptls->current_module : s->module);
    if (jl_is_symbol(e)) {  // bare symbols appear in toplevel exprs not wrapped in `thunk`
        jl_value_t *v = jl_get_global(modu, (jl_sym_t*)e);
        if (v == NULL)
            jl_undefined_var_error((jl_sym_t*)e);
        return v;
    }
    if (!jl_is_expr(e))
        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) {
        return do_call(args, nargs, s);
    }
    else if (ex->head == invoke_sym) {
        return do_invoke(args, nargs, s);
    }
    else if (ex->head == new_sym) {
        jl_value_t *thetype = eval(args[0], s);
        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], s));
        }
        JL_GC_POP();
        return v;
    }
    else if (ex->head == static_parameter_sym) {
        ssize_t n = jl_unbox_long(args[0]);
        assert(n > 0);
        if (s->sparam_vals && n <= jl_svec_len(s->sparam_vals)) {
            jl_value_t *sp = jl_svecref(s->sparam_vals, n - 1);
            if (!jl_is_typevar(sp))
                return sp;
        }
        // static parameter val unknown needs to be an error for ccall
        jl_error("could not determine static parameter value");
    }
    else if (ex->head == inert_sym) {
        return args[0];
    }
    else if (ex->head == copyast_sym) {
        return jl_copy_ast(eval(args[0], s));
    }
    else if (ex->head == exc_sym) {
        return ptls->exception_in_transit;
    }
    else if (ex->head == method_sym) {
        jl_sym_t *fname = (jl_sym_t*)args[0];
        if (jl_is_globalref(fname)) {
            modu = jl_globalref_mod(fname);
            fname = jl_globalref_name(fname);
        }
        assert(jl_expr_nargs(ex) != 1 || jl_is_symbol(fname));

        if (jl_is_symbol(fname)) {
            jl_value_t **bp=NULL;
            jl_value_t *bp_owner=NULL;
            jl_binding_t *b=NULL;
            if (bp == NULL) {
                b = jl_get_binding_for_method_def(modu, fname);
                bp = &b->value;
                bp_owner = (jl_value_t*)modu;
            }
            jl_value_t *gf = jl_generic_function_def(fname, bp, bp_owner, b);
            if (jl_expr_nargs(ex) == 1)
                return gf;
        }

        jl_value_t *atypes=NULL, *meth=NULL;
        JL_GC_PUSH2(&atypes, &meth);
        atypes = eval(args[1], s);
        meth = eval(args[2], s);
        jl_method_def((jl_svec_t*)atypes, (jl_code_info_t*)meth, args[3]);
        JL_GC_POP();
        return jl_nothing;
    }
    else if (ex->head == const_sym) {
        jl_sym_t *sym = (jl_sym_t*)args[0];
        if (jl_is_globalref(sym)) {
            modu = jl_globalref_mod(sym);
            sym = jl_globalref_name(sym);
        }
        assert(jl_is_symbol(sym));
        jl_binding_t *b = jl_get_binding_wr(modu, 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
        size_t i, l = jl_array_len(ex->args);
        for (i = 0; i < l; i++) {
            jl_sym_t *gsym = (jl_sym_t*)args[i];
            jl_module_t *gmodu = modu;
            if (jl_is_globalref(gsym)) {
                gmodu = jl_globalref_mod(gsym);
                gsym = jl_globalref_name(gsym);
            }
            assert(jl_is_symbol(gsym));
            jl_get_binding_wr(gmodu, gsym);
        }
        return (jl_value_t*)jl_nothing;
    }
    else if (ex->head == abstracttype_sym) {
        if (inside_typedef)
            jl_error("cannot eval a new abstract type definition while defining another type");
        jl_value_t *name = args[0];
        jl_value_t *para = eval(args[1], s);
        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));
        if (jl_is_globalref(name)) {
            modu = jl_globalref_mod(name);
            name = (jl_value_t*)jl_globalref_name(name);
        }
        assert(jl_is_symbol(name));
        dt = jl_new_abstracttype(name, NULL, (jl_svec_t*)para);
        jl_binding_t *b = jl_get_binding_wr(modu, (jl_sym_t*)name);
        temp = b->value;
        check_can_assign_type(b);
        b->value = (jl_value_t*)dt;
        jl_gc_wb_binding(b, dt);
        JL_TRY {
            inside_typedef = 1;
            super = eval(args[2], s);
            jl_set_datatype_super(dt, super);
            jl_reinstantiate_inner_types(dt);
        }
        JL_CATCH {
            jl_reset_instantiate_inner_types(dt);
            b->value = temp;
            jl_rethrow();
        }
        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) {
예제 #2
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);
                jl_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) {
        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_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);
                        jl_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;
            return rhs;
        }
        if (jl_is_symbol(sym)) {
            size_t i;
            for (i=0; i < nl; i++) {
                if (locals[i*2] == sym) {
                    locals[i*2+1] = rhs;
                    return rhs;
                }
            }
        }
        jl_module_t *m = jl_current_module;
        if (jl_is_globalref(sym)) {
            m = jl_globalref_mod(sym);
            sym = (jl_value_t*)jl_globalref_name(sym);
        }
        assert(jl_is_symbol(sym));
        JL_GC_PUSH1(&rhs);
        jl_binding_t *b = jl_get_binding_wr(m, (jl_sym_t*)sym);
        jl_checked_assignment(b, rhs);
        JL_GC_POP();
        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) || jl_is_globalref(fname)) {
            if (jl_is_expr(fname) && ((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;
            }
        }
        if (jl_expr_nargs(ex) == 1)
            return jl_generic_function_def(fname, bp, bp_owner, b);
        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;
        jl_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);
        ssize_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;
        jl_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;
        jl_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);
            jl_gc_wb(dt, dt->types);
            inside_typedef = 0;
            for(size_t i=0; i < jl_svec_len(dt->types); i++) {
                jl_value_t *elt = jl_svecref(dt->types, i);
                if (!jl_is_type(elt) && !jl_is_typevar(elt))
                    jl_type_error_rt(dt->name->name->name, "type definition", (jl_value_t*)jl_type_type, elt);
            }
            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);
            jl_gc_wb(dt, dt->instance);
        }

        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;
    }
예제 #3
0
static jl_lambda_info_t *jl_instantiate_staged(jl_method_t *generator, jl_tupletype_t *tt, jl_svec_t *env)
{
    size_t i, l;
    jl_expr_t *ex = NULL;
    jl_value_t *linenum = NULL;
    jl_svec_t *sparam_vals = env;
    jl_lambda_info_t *func = generator->lambda_template;
    JL_GC_PUSH4(&ex, &linenum, &sparam_vals, &func);
    int last_in = in_pure_callback;
    assert(jl_svec_len(func->sparam_syms) == jl_svec_len(sparam_vals));
    JL_TRY {
        in_pure_callback = 1;
        ex = jl_exprn(lambda_sym, 2);

        int nargs = func->nargs;
        jl_array_t *argnames = jl_alloc_vec_any(nargs);
        jl_array_ptr_set(ex->args, 0, argnames);
        for (i = 0; i < nargs; i++)
            jl_array_ptr_set(argnames, i, jl_array_ptr_ref(func->slotnames, i));

        jl_expr_t *scopeblock = jl_exprn(jl_symbol("scope-block"), 1);
        jl_array_ptr_set(ex->args, 1, scopeblock);
        jl_expr_t *body = jl_exprn(jl_symbol("block"), 2);
        jl_array_ptr_set(((jl_expr_t*)jl_exprarg(ex,1))->args, 0, body);
        linenum = jl_box_long(generator->line);
        jl_value_t *linenode = jl_new_struct(jl_linenumbernode_type, linenum);
        jl_array_ptr_set(body->args, 0, linenode);

        // invoke code generator
        assert(jl_nparams(tt) == jl_array_len(argnames) ||
               (func->isva && (jl_nparams(tt) >= jl_array_len(argnames) - 1)));
        jl_array_ptr_set(body->args, 1,
                jl_call_staged(sparam_vals, func, jl_svec_data(tt->parameters), jl_nparams(tt)));

        if (func->sparam_syms != jl_emptysvec) {
            // mark this function as having the same static parameters as the generator
            size_t i, nsp = jl_svec_len(func->sparam_syms);
            jl_expr_t *newast = jl_exprn(jl_symbol("with-static-parameters"), nsp + 1);
            jl_exprarg(newast, 0) = (jl_value_t*)ex;
            // (with-static-parameters func_expr sp_1 sp_2 ...)
            for (i = 0; i < nsp; i++)
                jl_exprarg(newast, i+1) = jl_svecref(func->sparam_syms, i);
            ex = newast;
        }

        // need to eval macros in the right module, but not give a warning for the `eval` call unless that results in a call to `eval`
        func = (jl_lambda_info_t*)jl_toplevel_eval_in_warn(generator->module, (jl_value_t*)ex, 1);

        // finish marking this as a specialization of the generator
        func->isva = generator->lambda_template->isva;
        func->def = generator;
        jl_gc_wb(func, generator);
        func->sparam_vals = env;
        jl_gc_wb(func, env);
        func->specTypes = tt;
        jl_gc_wb(func, tt);

        jl_array_t *stmts = (jl_array_t*)func->code;
        for(i = 0, l = jl_array_len(stmts); i < l; i++) {
            jl_array_ptr_set(stmts, i, jl_resolve_globals(jl_array_ptr_ref(stmts, i), func));
        }
        in_pure_callback = last_in;
    }
    JL_CATCH {
        in_pure_callback = last_in;
        jl_rethrow();
    }
    JL_GC_POP();
    return func;
}
예제 #4
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_svec_t *argdata, jl_function_t *f, jl_value_t *isstaged,
                                    jl_value_t *call_func, int iskw)
{
    jl_module_t *module = (bnd ? bnd->owner : NULL);
    // argdata is svec({types...}, svec(typevars...))
    jl_tupletype_t *argtypes = (jl_tupletype_t*)jl_svecref(argdata,0);
    jl_svec_t *tvars = (jl_svec_t*)jl_svecref(argdata,1);
    jl_value_t *gf = NULL;
    JL_GC_PUSH4(&gf, &tvars, &argtypes, &f);

    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_nparams(argtypes);
                jl_svec_t *newargtypes = jl_alloc_svec(1 + na);
                jl_lambda_info_t *new_linfo = NULL;
                JL_GC_PUSH2(&newargtypes, &new_linfo);
                new_linfo = jl_copy_lambda_info(f->linfo);
                f = jl_new_closure(f->fptr, f->env, new_linfo);
                size_t i=0;
                if (iskw) {
                    assert(na > 0);
                    // for kw sorter, keep container argument first
                    jl_svecset(newargtypes, 0, jl_tparam(argtypes, 0));
                    i++;
                }
                jl_svecset(newargtypes, i, jl_wrap_Type(gf));
                i++;
                for(; i < na+1; i++) {
                    jl_svecset(newargtypes, i, jl_tparam(argtypes, i-1));
                }
                argtypes = jl_apply_tuple_type(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);
                    jl_gc_wb(f->linfo, f->linfo->ast);
                }
                else {
                    // Do not mutate the original ast since it might
                    // be reused somewhere else
                    f->linfo->ast = jl_copy_ast(f->linfo->ast);
                    jl_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) {
            jl_methtable_t *mt = jl_gf_mtable(gf);
            assert(!module);
            module = mt->module;
            bp = (jl_value_t**)&mt->kwsorter;
            bp_owner = (jl_value_t*)mt;
            gf = *bp;
        }
    }

    // TODO
    size_t na = jl_nparams(argtypes);
    for(size_t i=0; i < na; i++) {
        jl_value_t *elt = jl_tparam(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_svec_len(tvars); i++) {
        jl_value_t *tv = jl_svecref(tvars,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, module);
        *bp = gf;
        if (bp_owner) jl_gc_wb(bp_owner, gf);
    }
    assert(jl_is_function(f));
    assert(jl_is_tuple_type(argtypes));
    assert(jl_is_svec(tvars));

    jl_add_method((jl_function_t*)gf, argtypes, f, tvars, 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);
        jl_gc_wb(li, li->ast);
    }
    JL_GC_POP();
    return gf;
}
예제 #5
0
파일: interpreter.c 프로젝트: FizzyP/julia
static jl_value_t *eval(jl_value_t *e, jl_value_t **locals, size_t nl)
{
    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_errorf("%s not defined", ((jl_sym_t*)e)->name);
        }
        return v;
    }
    if (jl_is_symbolnode(e)) {
        return eval((jl_value_t*)jl_symbolnode_sym(e), locals, nl);
    }
    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_errorf("%s not defined", s->name);
        return v;
    }
    if (!jl_is_expr(e)) {
        if (jl_is_getfieldnode(e)) {
            jl_value_t *v = eval(jl_getfieldnode_val(e), locals, nl);
            jl_value_t *gfargs[2] = {v, (jl_value_t*)jl_getfieldnode_name(e)};
            return jl_f_get_field(NULL, gfargs, 2);
        }
        if (jl_is_lambda_info(e)) {
            return (jl_value_t*)jl_new_closure(NULL, (jl_value_t*)jl_null,
                                               (jl_lambda_info_t*)e);
        }
        if (jl_is_linenode(e)) {
            jl_lineno = jl_linenode_line(e);
        }
        return e;
    }
    jl_expr_t *ex = (jl_expr_t*)e;
    jl_value_t **args = &jl_cellref(ex->args,0);
    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)) {
                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 (!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*2; i++) {
                        ar[i] = NULL;
                    }
                    for(int i=0; i < na; i++) {
                        ar[i*2+1] = eval(args[i+1], locals, nl);
                    }
                    if (na != nreq) {
                        jl_error("wrong number of arguments");
                    }
                    for(int i=0; i < na; i++) {
                        ar[i*2] = (jl_value_t*)jl_decl_var(jl_cellref(formals,i));
                    }
                    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);
        if (!jl_is_func(f))
            jl_type_error("apply", (jl_value_t*)jl_function_type,
                          (jl_value_t*)f);
        return do_call(f, &args[1], nargs-1, locals, nl);
    }
    else if (ex->head == assign_sym) {
        jl_value_t *sym = args[0];
        size_t i;
        for (i=0; i < nl; i++) {
            if (locals[i*2] == sym) {
                return (locals[i*2+1] = eval(args[1], locals, nl));
            }
        }
        jl_binding_t *b = jl_get_binding_wr(jl_current_module, (jl_sym_t*)sym);
        jl_value_t *rhs = eval(args[1], locals, nl);
        jl_checked_assignment(b, rhs);
        return rhs;
    }
    else if (ex->head == new_sym) {
        jl_value_t *thetype = eval(args[0], locals, nl);
        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));
        }
        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, 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_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);
            assert(jl_is_function(gf));
            assert(jl_is_gf(gf));
            if (!kw) {
                fname = (jl_sym_t*)jl_fieldref(jl_exprarg(fname, 2), 0);
                bp = &gf;
            }
            else {
                bp = (jl_value_t**)&((jl_methtable_t*)((jl_function_t*)gf)->env)->kwsorter;
            }
            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;
            }
        }
        jl_value_t *atypes=NULL, *meth=NULL, *tvars=NULL;
        JL_GC_PUSH3(&atypes, &meth, &tvars);
        atypes = eval(args[1], locals, nl);
        meth = eval(args[2], locals, nl);
        tvars = eval(args[3], locals, nl);
        jl_method_def(fname, bp, b, (jl_tuple_t*)atypes,
                      (jl_function_t*)meth, (jl_tuple_t*)tvars);
        JL_GC_POP();
        return *bp;
    }
    else if (ex->head == const_sym) {
        jl_value_t *sym = args[0];
        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);
        jl_value_t *super = NULL;
        JL_GC_PUSH2(&para, &super);
        jl_datatype_t *dt =
            jl_new_abstracttype(name, jl_any_type, (jl_tuple_t*)para);
        jl_binding_t *b = jl_get_binding_wr(jl_current_module, (jl_sym_t*)name);
        jl_checked_assignment(b, (jl_value_t*)dt);
        super = eval(args[2], locals, nl);
        jl_set_datatype_super(dt, super);
        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;
        JL_GC_PUSH3(&para, &super, &vnb);
        para = eval(args[1], locals, nl);
        vnb  = eval(args[2], locals, nl);
        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);
        jl_datatype_t *dt =
            jl_new_bitstype(name, jl_any_type, (jl_tuple_t*)para, nb);
        jl_binding_t *b = jl_get_binding_wr(jl_current_module, (jl_sym_t*)name);
        jl_checked_assignment(b, (jl_value_t*)dt);
        super = eval(args[3], locals, nl);
        jl_set_datatype_super(dt, super);
        JL_GC_POP();
        return (jl_value_t*)jl_nothing;
    }
    else if (ex->head == compositetype_sym) {
        void jl_add_constructors(jl_datatype_t *t);
        jl_value_t *name = args[0];
        jl_value_t *para = eval(args[1], locals, nl);
        jl_value_t *fnames = NULL;
        jl_value_t *super = NULL;
        jl_datatype_t *dt = NULL;
        JL_GC_PUSH4(&para, &super, &fnames, &dt);
        fnames = eval(args[2], locals, nl);
        dt = jl_new_datatype((jl_sym_t*)name, jl_any_type, (jl_tuple_t*)para,
                             (jl_tuple_t*)fnames, NULL,
                             0, args[6]==jl_true ? 1 : 0);
        dt->fptr = jl_f_ctor_trampoline;
        dt->ctor_factory = eval(args[3], locals, nl);
        jl_binding_t *b = jl_get_binding_wr(jl_current_module, (jl_sym_t*)name);
        jl_checked_assignment(b, (jl_value_t*)dt);
        inside_typedef = 1;
        dt->types = (jl_tuple_t*)eval(args[5], locals, nl);
        inside_typedef = 0;
        jl_check_type_tuple(dt->types, dt->name->name, "type definition");
        super = eval(args[4], locals, nl);
        jl_set_datatype_super(dt, super);
        jl_compute_field_offsets(dt);
        jl_add_constructors(dt);
        JL_GC_POP();
        return (jl_value_t*)jl_nothing;
    }
    else if (ex->head == macro_sym) {
        jl_sym_t *nm = (jl_sym_t*)args[0];
        assert(jl_is_symbol(nm));
        jl_function_t *f = (jl_function_t*)eval(args[1], locals, nl);
        assert(jl_is_function(f));
        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);
            li->name = nm;
        }
        jl_set_global(jl_current_module, nm, (jl_value_t*)f);
        return (jl_value_t*)jl_nothing;
    }
    else if (ex->head == line_sym) {
        jl_lineno = jl_unbox_long(jl_exprarg(ex,0));
        return (jl_value_t*)jl_nothing;
    }
    else if (ex->head == module_sym) {
        return jl_eval_module_expr(ex);
    }
    else if (ex->head == error_sym || ex->head == jl_continue_sym) {
        if (jl_is_byte_string(args[0]))
            jl_errorf("syntax: %s", jl_string_data(args[0]));
        jl_throw(args[0]);
    }
    jl_errorf("unsupported or misplaced expression %s", ex->head->name);
    return (jl_value_t*)jl_nothing;
}
예제 #6
0
파일: toplevel.c 프로젝트: elsuizo/julia
jl_value_t *jl_eval_module_expr(jl_module_t *parent_module, jl_expr_t *ex)
{
    jl_ptls_t ptls = jl_get_ptls_states();
    static arraylist_t module_stack;
    static int initialized=0;
    static jl_module_t *outermost = NULL;
    if (!initialized) {
        arraylist_new(&module_stack, 0);
        initialized = 1;
    }
    assert(ex->head == module_sym);
    jl_module_t *last_module = ptls->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 *newm = jl_new_module(name);
    jl_value_t *defaultdefs = NULL, *form = NULL;
    JL_GC_PUSH4(&last_module, &defaultdefs, &form, &newm);
    // copy parent environment info into submodule
    newm->uuid = parent_module->uuid;
    if (jl_base_module &&
            (jl_value_t*)parent_module == jl_get_global(jl_base_module, jl_symbol("__toplevel__"))) {
        newm->parent = newm;
        jl_register_root_module(newm);
    }
    else {
        jl_binding_t *b = jl_get_binding_wr(parent_module, name, 1);
        jl_declare_constant(b);
        if (b->value != NULL) {
            if (!jl_is_module(b->value)) {
                jl_errorf("invalid redefinition of constant %s", jl_symbol_name(name));
            }
            if (jl_generating_output()) {
                jl_errorf("cannot replace module %s during compilation", jl_symbol_name(name));
            }
            jl_printf(JL_STDERR, "WARNING: replacing module %s.\n", jl_symbol_name(name));
        }
        newm->parent = parent_module;
        b->value = (jl_value_t*)newm;
        jl_gc_wb_binding(b, newm);
    }
    // Assume `newm` is globally reachable at this point.

    if (parent_module == jl_main_module && name == jl_symbol("Base")) {
        // pick up Base module during bootstrap
        jl_base_module = newm;
    }

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

    size_t last_age = ptls->world_age;
    jl_module_t *task_last_m = ptls->current_task->current_module;
    ptls->current_task->current_module = ptls->current_module = newm;

    jl_module_t *prev_outermost = outermost;
    size_t stackidx = module_stack.len;
    if (outermost == NULL)
        outermost = newm;

    jl_array_t *exprs = ((jl_expr_t*)jl_exprarg(ex, 2))->args;
    JL_TRY {
        if (std_imports) {
            // add `eval` function
            defaultdefs = jl_call_scm_on_ast("module-default-defs", (jl_value_t*)ex, newm);
            ptls->world_age = jl_world_counter;
            jl_toplevel_eval_flex(newm, defaultdefs, 0, 1);
            defaultdefs = NULL;
        }

        for (int i = 0; i < jl_array_len(exprs); i++) {
            // process toplevel form
            ptls->world_age = jl_world_counter;
            form = jl_expand_stmt(jl_array_ptr_ref(exprs, i), newm);
            ptls->world_age = jl_world_counter;
            (void)jl_toplevel_eval_flex(newm, form, 1, 1);
        }
    }
    JL_CATCH {
        ptls->current_module = last_module;
        ptls->current_task->current_module = task_last_m;
        outermost = prev_outermost;
        module_stack.len = stackidx;
        jl_rethrow();
    }
    JL_GC_POP();
    ptls->world_age = last_age;
    ptls->current_module = last_module;
    ptls->current_task->current_module = task_last_m;
    outermost = prev_outermost;

#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 (jl_symbol_name(b->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",
                          jl_symbol_name(b->name), jl_symbol_name(newm->name));
            */
        }
    }
#endif

    arraylist_push(&module_stack, newm);

    if (outermost == NULL || parent_module == jl_main_module) {
        JL_TRY {
            size_t i, l = module_stack.len;
            for (i = stackidx; i < l; i++) {
                jl_module_load_time_initialize((jl_module_t*)module_stack.items[i]);
            }
            assert(module_stack.len == l);
            module_stack.len = stackidx;
        }
        JL_CATCH {
            module_stack.len = stackidx;
            jl_rethrow();
        }
    }
예제 #7
0
static jl_value_t *eval(jl_value_t *e, interpreter_state *s)
{
    jl_ptls_t ptls = jl_get_ptls_states();
    jl_code_info_t *src = s->src;
    if (jl_is_ssavalue(e)) {
        ssize_t id = ((jl_ssavalue_t*)e)->id;
        if (src == NULL || id >= jl_source_nssavalues(src) || id < 0 || s->locals == NULL)
            jl_error("access to invalid SSAValue");
        else
            return s->locals[jl_source_nslots(src) + id];
    }
    if (jl_is_slot(e)) {
        ssize_t n = jl_slot_number(e);
        if (src == NULL || n > jl_source_nslots(src) || n < 1 || s->locals == NULL)
            jl_error("access to invalid slot number");
        jl_value_t *v = s->locals[n - 1];
        if (v == NULL)
            jl_undefined_var_error((jl_sym_t*)jl_array_ptr_ref(src->slotnames, n - 1));
        return v;
    }
    if (jl_is_globalref(e)) {
        return jl_eval_global_var(jl_globalref_mod(e), jl_globalref_name(e));
    }
    if (jl_is_quotenode(e))
        return jl_fieldref(e,0);
    jl_module_t *modu = s->module;
    if (jl_is_symbol(e)) {  // bare symbols appear in toplevel exprs not wrapped in `thunk`
        return jl_eval_global_var(modu, (jl_sym_t*)e);
    }
    if (!jl_is_expr(e))
        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 == isdefined_sym) {
        jl_value_t *sym = args[0];
        int defined = 0;
        if (jl_is_slot(sym)) {
            ssize_t n = jl_slot_number(sym);
            if (src == NULL || n > jl_source_nslots(src) || n < 1 || s->locals == NULL)
                jl_error("access to invalid slot number");
            defined = s->locals[n - 1] != NULL;
        }
        else if (jl_is_globalref(sym)) {
            defined = jl_boundp(jl_globalref_mod(sym), jl_globalref_name(sym));
        }
        else if (jl_is_symbol(sym)) {
            defined = jl_boundp(modu, (jl_sym_t*)sym);
        }
        else if (jl_is_expr(sym) && ((jl_expr_t*)sym)->head == static_parameter_sym) {
            ssize_t n = jl_unbox_long(args[0]);
            assert(n > 0);
            if (s->sparam_vals && n <= jl_svec_len(s->sparam_vals)) {
                jl_value_t *sp = jl_svecref(s->sparam_vals, n - 1);
                defined = !jl_is_typevar(sp);
            }
            else {
                // static parameter val unknown needs to be an error for ccall
                jl_error("could not determine static parameter value");
            }
        }
        else {
            assert(0 && "malformed isdefined expression");
        }
        return defined ? jl_true : jl_false;
    }
    else if (ex->head == call_sym) {
        return do_call(args, nargs, s);
    }
    else if (ex->head == invoke_sym) {
        return do_invoke(args, nargs, s);
    }
    else if (ex->head == new_sym) {
        jl_value_t *thetype = eval(args[0], s);
        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_value_t *ft = jl_field_type(thetype, i - 1);
            jl_value_t *fldv = eval(args[i], s);
            if (!jl_isa(fldv, ft))
                jl_type_error("new", ft, fldv);
            jl_set_nth_field(v, i - 1, fldv);
        }
        JL_GC_POP();
        return v;
    }
    else if (ex->head == static_parameter_sym) {
        ssize_t n = jl_unbox_long(args[0]);
        assert(n > 0);
        if (s->sparam_vals && n <= jl_svec_len(s->sparam_vals)) {
            jl_value_t *sp = jl_svecref(s->sparam_vals, n - 1);
            if (jl_is_typevar(sp) && !s->preevaluation)
                jl_undefined_var_error(((jl_tvar_t*)sp)->name);
            return sp;
        }
        // static parameter val unknown needs to be an error for ccall
        jl_error("could not determine static parameter value");
    }
    else if (ex->head == inert_sym) {
        return args[0];
    }
    else if (ex->head == copyast_sym) {
        return jl_copy_ast(eval(args[0], s));
    }
    else if (ex->head == exc_sym) {
        return ptls->exception_in_transit;
    }
    else if (ex->head == method_sym) {
        jl_sym_t *fname = (jl_sym_t*)args[0];
        if (jl_is_globalref(fname)) {
            modu = jl_globalref_mod(fname);
            fname = jl_globalref_name(fname);
        }
        assert(jl_expr_nargs(ex) != 1 || jl_is_symbol(fname));

        if (jl_is_symbol(fname)) {
            jl_value_t *bp_owner = (jl_value_t*)modu;
            jl_binding_t *b = jl_get_binding_for_method_def(modu, fname);
            jl_value_t **bp = &b->value;
            jl_value_t *gf = jl_generic_function_def(b->name, b->owner, bp, bp_owner, b);
            if (jl_expr_nargs(ex) == 1)
                return gf;
        }

        jl_value_t *atypes = NULL, *meth = NULL;
        JL_GC_PUSH2(&atypes, &meth);
        atypes = eval(args[1], s);
        meth = eval(args[2], s);
        jl_method_def((jl_svec_t*)atypes, (jl_code_info_t*)meth, s->module, args[3]);
        JL_GC_POP();
        return jl_nothing;
    }
    else if (ex->head == const_sym) {
        jl_sym_t *sym = (jl_sym_t*)args[0];
        if (jl_is_globalref(sym)) {
            modu = jl_globalref_mod(sym);
            sym = jl_globalref_name(sym);
        }
        assert(jl_is_symbol(sym));
        jl_binding_t *b = jl_get_binding_wr(modu, sym, 1);
        jl_declare_constant(b);
        return (jl_value_t*)jl_nothing;
    }
    else if (ex->head == abstracttype_sym) {
        if (inside_typedef)
            jl_error("cannot eval a new abstract type definition while defining another type");
        jl_value_t *name = args[0];
        jl_value_t *para = eval(args[1], s);
        jl_value_t *super = NULL;
        jl_value_t *temp = NULL;
        jl_datatype_t *dt = NULL;
        jl_value_t *w = NULL;
        JL_GC_PUSH4(&para, &super, &temp, &w);
        assert(jl_is_svec(para));
        if (jl_is_globalref(name)) {
            modu = jl_globalref_mod(name);
            name = (jl_value_t*)jl_globalref_name(name);
        }
        assert(jl_is_symbol(name));
        dt = jl_new_abstracttype(name, modu, NULL, (jl_svec_t*)para);
        w = dt->name->wrapper;
        jl_binding_t *b = jl_get_binding_wr(modu, (jl_sym_t*)name, 1);
        temp = b->value;
        check_can_assign_type(b, w);
        b->value = w;
        jl_gc_wb_binding(b, w);
        JL_TRY {
            inside_typedef = 1;
            super = eval(args[2], s);
            jl_set_datatype_super(dt, super);
            jl_reinstantiate_inner_types(dt);
        }
        JL_CATCH {
            jl_reset_instantiate_inner_types(dt);
            b->value = temp;
            jl_rethrow();
        }
        b->value = temp;
        if (temp == NULL || !equiv_type(dt, (jl_datatype_t*)jl_unwrap_unionall(temp))) {
            jl_checked_assignment(b, w);
        }
        JL_GC_POP();
        return (jl_value_t*)jl_nothing;
    }
    else if (ex->head == primtype_sym) {