jl_value_t *jl_eval_module_expr(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 *parent_module = ptls->current_module;
jl_binding_t *b = jl_get_binding_wr(parent_module, name);
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));
}
jl_module_t *newm = jl_new_module(name);
newm->parent = parent_module;
b->value = (jl_value_t*)newm;
jl_gc_wb_binding(b, newm);
if (parent_module == jl_main_module && name == jl_symbol("Base")) {
// pick up Base module during bootstrap
jl_base_module = newm;
}
// 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_value_t *defaultdefs = NULL, *form = NULL;
JL_GC_PUSH3(&last_module, &defaultdefs, &form);
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;
if (std_imports) {
// add `eval` function
defaultdefs = jl_call_scm_on_ast("module-default-defs", (jl_value_t*)ex);
jl_toplevel_eval_flex(defaultdefs, 0, 1);
defaultdefs = NULL;
}
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
form = jl_expand(jl_array_ptr_ref(exprs, i));
(void)jl_toplevel_eval_flex(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->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 || ptls->current_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();
}
}
jl_value_t *jl_toplevel_eval_flex(jl_value_t *e, int fast)
{
//jl_show(ex);
//JL_PRINTF(JL_STDOUT, "\n");
if (!jl_is_expr(e))
return jl_interpret_toplevel_expr(e);
jl_expr_t *ex = (jl_expr_t*)e;
if (ex->head == null_sym || ex->head == error_sym) {
// expression types simple enough not to need expansion
return jl_interpret_toplevel_expr(e);
}
if (ex->head == module_sym) {
return jl_eval_module_expr(ex);
}
// handle import, using, importall, export toplevel-only forms
if (ex->head == importall_sym) {
jl_module_t *m = eval_import_path(ex->args);
if (m==NULL) return jl_nothing;
jl_sym_t *name = (jl_sym_t*)jl_cellref(ex->args, jl_array_len(ex->args)-1);
if (!jl_is_symbol(name))
jl_error("syntax: malformed \"importall\" statement");
m = (jl_module_t*)jl_eval_global_var(m, name);
if (!jl_is_module(m))
jl_errorf("invalid %s statement: name exists but does not refer to a module", ex->head->name);
jl_module_importall(jl_current_module, m);
return jl_nothing;
}
if (ex->head == using_sym) {
jl_module_t *m = eval_import_path(ex->args);
if (m==NULL) return jl_nothing;
jl_sym_t *name = (jl_sym_t*)jl_cellref(ex->args, jl_array_len(ex->args)-1);
if (!jl_is_symbol(name))
jl_error("syntax: malformed \"using\" statement");
jl_module_t *u = (jl_module_t*)jl_eval_global_var(m, name);
if (jl_is_module(u)) {
jl_module_using(jl_current_module, u);
}
else {
jl_module_use(jl_current_module, m, name);
}
return jl_nothing;
}
if (ex->head == import_sym) {
jl_module_t *m = eval_import_path(ex->args);
if (m==NULL) return jl_nothing;
jl_sym_t *name = (jl_sym_t*)jl_cellref(ex->args, jl_array_len(ex->args)-1);
if (!jl_is_symbol(name))
jl_error("syntax: malformed \"import\" statement");
jl_module_import(jl_current_module, m, name);
return jl_nothing;
}
if (ex->head == export_sym) {
for(size_t i=0; i < jl_array_len(ex->args); i++) {
jl_sym_t *name = (jl_sym_t*)jl_cellref(ex->args, i);
if (!jl_is_symbol(name))
jl_error("syntax: malformed \"export\" statement");
jl_module_export(jl_current_module, name);
}
return jl_nothing;
}
if (ex->head == toplevel_sym) {
int i=0; jl_value_t *res=jl_nothing;
for(i=0; i < jl_array_len(ex->args); i++) {
res = jl_toplevel_eval_flex(jl_cellref(ex->args, i), fast);
}
return res;
}
jl_value_t *thunk=NULL;
jl_value_t *result;
jl_lambda_info_t *thk=NULL;
int ewc = 0;
JL_GC_PUSH3(&thunk, &thk, &ex);
if (ex->head != body_sym && ex->head != thunk_sym && ex->head != return_sym &&
ex->head != method_sym) {
// not yet expanded
ex = (jl_expr_t*)jl_expand(e);
}
jl_sym_t *head = jl_is_expr(ex) ? ex->head : NULL;
if (head == toplevel_sym) {
int i=0; jl_value_t *res=jl_nothing;
for(i=0; i < jl_array_len(ex->args); i++) {
res = jl_toplevel_eval_flex(jl_cellref(ex->args, i), fast);
}
JL_GC_POP();
return res;
}
if (head == thunk_sym) {
thk = (jl_lambda_info_t*)jl_exprarg(ex,0);
assert(jl_is_lambda_info(thk));
assert(jl_is_expr(thk->ast));
ewc = jl_eval_with_compiler_p(jl_lam_body((jl_expr_t*)thk->ast), fast);
if (!ewc) {
if (jl_lam_vars_captured((jl_expr_t*)thk->ast)) {
// interpreter doesn't handle closure environment
ewc = 1;
}
}
}
else {
if (head && jl_eval_with_compiler_p((jl_expr_t*)ex, fast)) {
thk = jl_wrap_expr((jl_value_t*)ex);
ewc = 1;
}
else {
if (head == body_sym) {
result = jl_toplevel_eval_body(ex->args);
}
else if (jl_is_toplevel_only_expr((jl_value_t*)ex)) {
result = jl_toplevel_eval((jl_value_t*)ex);
}
else {
result = jl_interpret_toplevel_expr((jl_value_t*)ex);
}
JL_GC_POP();
return result;
}
}
if (ewc) {
thunk = (jl_value_t*)jl_new_closure(NULL, (jl_value_t*)jl_null, thk);
if (!jl_in_inference) {
jl_type_infer(thk, jl_tuple_type, thk);
}
result = jl_apply((jl_function_t*)thunk, NULL, 0);
}
else {
result = jl_interpret_toplevel_thunk(thk);
}
JL_GC_POP();
return result;
}
jl_value_t *jl_toplevel_eval_flex(jl_value_t *e, int fast)
{
//jl_show(ex);
//JL_PRINTF(JL_STDOUT, "\n");
if (!jl_is_expr(e))
return jl_interpret_toplevel_expr(e);
jl_expr_t *ex = (jl_expr_t*)e;
if (ex->head == null_sym || ex->head == error_sym) {
// expression types simple enough not to need expansion
return jl_interpret_toplevel_expr(e);
}
if (ex->head == module_sym) {
return jl_eval_module_expr(ex);
}
// handle import, using, export toplevel-only forms
if (ex->head == using_sym) {
jl_module_t *m = eval_import_path(ex->args);
jl_sym_t *name = (jl_sym_t*)jl_cellref(ex->args, ex->args->length-1);
assert(jl_is_symbol(name));
m = (jl_module_t*)jl_eval_global_var(m, name);
if (!jl_is_module(m))
jl_errorf("invalid using statement");
jl_module_using(jl_current_module, m);
return jl_nothing;
}
if (ex->head == import_sym) {
jl_module_t *m = eval_import_path(ex->args);
jl_sym_t *name = (jl_sym_t*)jl_cellref(ex->args, ex->args->length-1);
assert(jl_is_symbol(name));
jl_module_import(jl_current_module, m, name);
return jl_nothing;
}
if (ex->head == export_sym) {
for(size_t i=0; i < ex->args->length; i++) {
jl_module_export(jl_current_module,
(jl_sym_t*)jl_cellref(ex->args, i));
}
return jl_nothing;
}
if (ex->head == toplevel_sym) {
int i=0; jl_value_t *res=jl_nothing;
for(i=0; i < ex->args->length; i++) {
res = jl_toplevel_eval_flex(jl_cellref(ex->args, i), fast);
}
return res;
}
jl_value_t *thunk=NULL;
jl_value_t *result;
jl_lambda_info_t *thk=NULL;
int ewc = 0;
JL_GC_PUSH(&thunk, &thk, &ex);
if (ex->head != body_sym && ex->head != thunk_sym) {
// not yet expanded
ex = (jl_expr_t*)jl_expand(e);
}
if (jl_is_expr(ex) && ex->head == toplevel_sym) {
int i=0; jl_value_t *res=jl_nothing;
for(i=0; i < ex->args->length; i++) {
res = jl_toplevel_eval_flex(jl_cellref(ex->args, i), fast);
}
return res;
}
if (jl_is_expr(ex) && ex->head == thunk_sym) {
thk = (jl_lambda_info_t*)jl_exprarg(ex,0);
assert(jl_is_lambda_info(thk));
ewc = jl_eval_with_compiler_p(jl_lam_body((jl_expr_t*)thk->ast), fast);
if (!ewc) {
jl_array_t *vinfos = jl_lam_vinfo((jl_expr_t*)thk->ast);
int i;
for(i=0; i < vinfos->length; i++) {
if (jl_vinfo_capt((jl_array_t*)jl_cellref(vinfos,i))) {
// interpreter doesn't handle closure environment
ewc = 1;
break;
}
}
}
}
else {
if (jl_is_expr(ex) && jl_eval_with_compiler_p((jl_expr_t*)ex, fast)) {
thk = jl_wrap_expr((jl_value_t*)ex);
ewc = 1;
}
else {
result = jl_interpret_toplevel_expr((jl_value_t*)ex);
JL_GC_POP();
return result;
}
}
if (ewc) {
thunk = (jl_value_t*)jl_new_closure(NULL, (jl_value_t*)jl_null, thk);
if (!jl_in_inference) {
jl_type_infer(thk, jl_tuple_type, thk);
}
result = jl_apply((jl_function_t*)thunk, NULL, 0);
}
else {
result = jl_interpret_toplevel_thunk(thk);
}
JL_GC_POP();
return result;
}