swh:1:snp:a72e953ecd624a7df6e6196bbdd05851996c5e40
Tip revision: 2a349ef81dfb31db623d98d9640e677b18b3d928 authored by Keno Fischer on 03 May 2018, 00:52:53 UTC
WIP: Phi node codegen nastiness
WIP: Phi node codegen nastiness
Tip revision: 2a349ef
toplevel.c
// This file is a part of Julia. License is MIT: https://julialang.org/license
/*
evaluating top-level expressions, loading source files
*/
#include "platform.h"
#include <stdlib.h>
#include <string.h>
#include <setjmp.h>
#include <sys/types.h>
#include <errno.h>
#if defined(_OS_WINDOWS_)
#include <malloc.h>
#else
#include <unistd.h>
#endif
#include "julia.h"
#include "julia_internal.h"
#include "uv.h"
#include "julia_assert.h"
#include "intrinsics.h"
#ifdef __cplusplus
extern "C" {
#endif
// current line number in a file
JL_DLLEXPORT int jl_lineno = 0; // need to update jl_critical_error if this is TLS
// current file name
JL_DLLEXPORT const char *jl_filename = "no file"; // need to update jl_critical_error if this is TLS
// the Main we started with, in case it is switched
jl_module_t *jl_internal_main_module = NULL;
JL_DLLEXPORT void jl_add_standard_imports(jl_module_t *m)
{
jl_module_t *base_module = jl_base_relative_to(m);
assert(base_module != NULL);
// using Base
jl_module_using(m, base_module);
}
JL_DLLEXPORT jl_module_t *jl_new_main_module(void)
{
jl_ptls_t ptls = jl_get_ptls_states();
if (jl_generating_output() && jl_options.incremental)
jl_error("cannot call workspace() in incremental compile mode");
// switch to a new top-level module
if (ptls->current_module != jl_main_module &&
ptls->current_module != NULL && jl_main_module != NULL)
jl_error("Main can only be replaced from the top level");
jl_module_t *old_main = jl_main_module;
jl_main_module = jl_new_module(jl_symbol("Main"));
jl_main_module->parent = jl_main_module;
if (old_main) { // don't block continued loading of incremental caches
jl_main_module->primary_world = old_main->primary_world;
jl_main_module->build_id = old_main->build_id;
jl_main_module->uuid = old_main->uuid;
}
ptls->current_module = jl_main_module;
jl_core_module->parent = jl_main_module;
jl_set_const(jl_main_module, jl_symbol("Core"),
(jl_value_t*)jl_core_module);
jl_set_global(jl_core_module, jl_symbol("Main"),
(jl_value_t*)jl_main_module);
ptls->current_task->current_module = jl_main_module;
return old_main;
}
static jl_function_t *jl_module_get_initializer(jl_module_t *m)
{
return (jl_function_t*)jl_get_global(m, jl_symbol("__init__"));
}
void jl_module_run_initializer(jl_module_t *m)
{
jl_function_t *f = jl_module_get_initializer(m);
if (f == NULL)
return;
size_t last_age = jl_get_ptls_states()->world_age;
JL_TRY {
jl_get_ptls_states()->world_age = jl_world_counter;
jl_apply(&f, 1);
jl_get_ptls_states()->world_age = last_age;
}
JL_CATCH {
if (jl_initerror_type == NULL) {
jl_rethrow();
}
else {
jl_rethrow_other(jl_new_struct(jl_initerror_type, m->name,
jl_exception_in_transit));
}
}
}
// load time init procedure: in build mode, only record order
static void jl_module_load_time_initialize(jl_module_t *m)
{
int build_mode = jl_generating_output();
if (build_mode) {
if (jl_module_init_order == NULL)
jl_module_init_order = jl_alloc_vec_any(0);
jl_array_ptr_1d_push(jl_module_init_order, (jl_value_t*)m);
jl_function_t *f = jl_module_get_initializer(m);
if (f != NULL && jl_options.incremental) {
jl_value_t *tt = jl_is_type(f) ? (jl_value_t*)jl_wrap_Type(f) : jl_typeof(f);
JL_GC_PUSH1(&tt);
tt = (jl_value_t*)jl_apply_tuple_type_v(&tt, 1);
jl_compile_hint((jl_tupletype_t*)tt);
JL_GC_POP();
}
}
else {
jl_module_run_initializer(m);
}
}
void jl_register_root_module(jl_module_t *m)
{
static jl_value_t *register_module_func = NULL;
assert(jl_base_module);
if (register_module_func == NULL)
register_module_func = jl_get_global(jl_base_module, jl_symbol("register_root_module"));
assert(register_module_func);
jl_value_t *args[2];
args[0] = register_module_func;
args[1] = (jl_value_t*)m;
jl_apply(args, 2);
}
jl_array_t *jl_get_loaded_modules(void)
{
static jl_value_t *loaded_modules_array = NULL;
if (loaded_modules_array == NULL && jl_base_module != NULL)
loaded_modules_array = jl_get_global(jl_base_module, jl_symbol("loaded_modules_array"));
if (loaded_modules_array != NULL)
return (jl_array_t*)jl_call0((jl_function_t*)loaded_modules_array);
return NULL;
}
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();
}
}
return (jl_value_t*)newm;
}
jl_value_t *jl_eval_dot_expr(jl_module_t *m, jl_value_t *x, jl_value_t *f, int fast)
{
jl_value_t **args;
JL_GC_PUSHARGS(args, 3);
args[1] = jl_toplevel_eval_flex(m, x, fast, 0);
args[2] = jl_toplevel_eval_flex(m, f, fast, 0);
if (jl_is_module(args[1])) {
JL_TYPECHK("getfield", symbol, args[2]);
args[0] = jl_eval_global_var((jl_module_t*)args[1], (jl_sym_t*)args[2]);
}
else {
args[0] = jl_eval_global_var(jl_base_relative_to(m), jl_symbol("getproperty"));
args[0] = jl_apply(args, 3);
}
JL_GC_POP();
return args[0];
}
// module referenced by (top ...) from within m
// this is only needed because of the bootstrapping process:
// - initially Base doesn't exist and top === Core
// - later, it refers to either old Base or new Base
JL_DLLEXPORT jl_module_t *jl_base_relative_to(jl_module_t *m)
{
for (;;) {
if (m->istopmod)
return m;
if (m == m->parent)
break;
m = m->parent;
}
return jl_top_module;
}
static void expr_attributes(jl_value_t *v, int *has_intrinsics, int *has_defs)
{
if (!jl_is_expr(v))
return;
jl_expr_t *e = (jl_expr_t*)v;
jl_sym_t *head = e->head;
if (head == toplevel_sym || head == thunk_sym) {
return;
}
else if (head == global_sym || head == const_sym || head == copyast_sym) {
// Note: `copyast` is included here since it indicates the presence of
// `quote` and probably `eval`.
*has_defs = 1;
return;
}
else if (head == method_sym || head == abstracttype_sym || head == primtype_sym ||
head == structtype_sym || jl_is_toplevel_only_expr(v)) {
*has_defs = 1;
}
else if (head == cfunction_sym) {
*has_intrinsics = 1;
return;
}
else if (head == foreigncall_sym) {
*has_intrinsics = 1;
return;
}
else if (head == call_sym && jl_expr_nargs(e) > 0) {
jl_value_t *called = NULL;
jl_value_t *f = jl_exprarg(e, 0);
if (jl_is_globalref(f)) {
jl_module_t *mod = jl_globalref_mod(f);
jl_sym_t *name = jl_globalref_name(f);
if (jl_binding_resolved_p(mod, name)) {
jl_binding_t *b = jl_get_binding(mod, name);
if (b && b->value && b->constp)
called = b->value;
}
}
else if (jl_is_quotenode(f)) {
called = jl_quotenode_value(f);
}
if (called && jl_is_intrinsic(called) && jl_unbox_int32(called) == (int)llvmcall) {
*has_intrinsics = 1;
return;
}
}
int i;
for (i = 0; i < jl_array_len(e->args); i++) {
jl_value_t *a = jl_exprarg(e, i);
if (jl_is_expr(a))
expr_attributes(a, has_intrinsics, has_defs);
}
}
int jl_code_requires_compiler(jl_code_info_t *src)
{
jl_array_t *body = src->code;
assert(jl_typeis(body, jl_array_any_type));
size_t i;
int has_intrinsics = 0, has_defs = 0;
for(i=0; i < jl_array_len(body); i++) {
jl_value_t *stmt = jl_array_ptr_ref(body,i);
expr_attributes(stmt, &has_intrinsics, &has_defs);
if (has_intrinsics)
return 1;
}
return 0;
}
static void body_attributes(jl_array_t *body, int *has_intrinsics, int *has_defs, int *has_loops)
{
size_t i, maxlabl=0;
for(i=0; i < jl_array_len(body); i++) {
jl_value_t *stmt = jl_array_ptr_ref(body,i);
if (jl_is_labelnode(stmt)) {
int l = jl_labelnode_label(stmt);
if (l > maxlabl) maxlabl = l;
}
}
size_t sz = (maxlabl+1+7)/8;
char *labls = (char*)alloca(sz); memset(labls,0,sz);
*has_loops = 0;
for(i=0; i < jl_array_len(body); i++) {
jl_value_t *stmt = jl_array_ptr_ref(body,i);
if (!*has_loops) {
if (jl_is_labelnode(stmt)) {
int l = jl_labelnode_label(stmt);
labls[l/8] |= (1<<(l&7));
}
else if (jl_is_gotonode(stmt)) {
int l = jl_gotonode_label(stmt);
if (labls[l/8] & (1<<(l&7)))
*has_loops = 1;
}
else if (jl_is_expr(stmt)) {
if (((jl_expr_t*)stmt)->head==goto_ifnot_sym) {
int l = jl_unbox_long(jl_exprarg(stmt,1));
if (labls[l/8] & (1<<(l&7)))
*has_loops = 1;
}
}
}
expr_attributes(stmt, has_intrinsics, has_defs);
}
}
static jl_module_t *call_require(jl_module_t *mod, jl_sym_t *var)
{
static jl_value_t *require_func = NULL;
jl_module_t *m = NULL;
if (require_func == NULL && jl_base_module != NULL)
require_func = jl_get_global(jl_base_module, jl_symbol("require"));
if (require_func != NULL) {
jl_value_t *reqargs[3];
reqargs[0] = require_func;
reqargs[1] = (jl_value_t*)mod;
reqargs[2] = (jl_value_t*)var;
m = (jl_module_t*)jl_apply(reqargs, 3);
}
if (m == NULL || !jl_is_module(m)) {
jl_errorf("failed to load module %s", jl_symbol_name(var));
}
return m;
}
// either:
// - sets *name and returns the module to import *name from
// - sets *name to NULL and returns a module to import
static jl_module_t *eval_import_path(jl_module_t *where, jl_module_t *from, jl_array_t *args, jl_sym_t **name, const char *keyword)
{
jl_sym_t *var = (jl_sym_t*)jl_array_ptr_ref(args, 0);
size_t i = 1;
jl_module_t *m = NULL;
*name = NULL;
if (!jl_is_symbol(var))
jl_type_error(keyword, (jl_value_t*)jl_sym_type, (jl_value_t*)var);
if (from != NULL) {
m = from;
i = 0;
}
else if (var != dot_sym) {
// `A.B`: call the loader to obtain the root A in the current environment.
if (jl_core_module && var == jl_core_module->name) {
m = jl_core_module;
}
else if (jl_base_module && var == jl_base_module->name) {
m = jl_base_module;
}
else {
m = call_require(where, var);
}
if (i == jl_array_len(args))
return m;
}
else {
// `.A.B.C`: strip off leading dots by following parent links
m = where;
while (1) {
if (i >= jl_array_len(args))
jl_error("invalid module path");
var = (jl_sym_t*)jl_array_ptr_ref(args, i);
if (var != dot_sym)
break;
i++;
m = m->parent;
}
}
while (1) {
var = (jl_sym_t*)jl_array_ptr_ref(args, i);
if (!jl_is_symbol(var))
jl_type_error(keyword, (jl_value_t*)jl_sym_type, (jl_value_t*)var);
if (var == dot_sym)
jl_errorf("invalid %s path: \".\" in identifier path", keyword);
if (i == jl_array_len(args)-1)
break;
m = (jl_module_t*)jl_eval_global_var(m, var);
if (!jl_is_module(m))
jl_errorf("invalid %s path: \"%s\" does not name a module", keyword, jl_symbol_name(var));
i++;
}
*name = var;
return m;
}
int jl_is_toplevel_only_expr(jl_value_t *e)
{
return jl_is_expr(e) &&
(((jl_expr_t*)e)->head == module_sym ||
((jl_expr_t*)e)->head == importall_sym ||
((jl_expr_t*)e)->head == import_sym ||
((jl_expr_t*)e)->head == using_sym ||
((jl_expr_t*)e)->head == export_sym ||
((jl_expr_t*)e)->head == thunk_sym ||
((jl_expr_t*)e)->head == global_sym ||
((jl_expr_t*)e)->head == toplevel_sym ||
((jl_expr_t*)e)->head == error_sym ||
((jl_expr_t*)e)->head == jl_incomplete_sym);
}
void jl_resolve_globals_in_ir(jl_array_t *stmts, jl_module_t *m, jl_svec_t *sparam_vals,
int binding_effects);
static jl_method_instance_t *method_instance_for_thunk(jl_code_info_t *src, jl_module_t *module)
{
jl_method_instance_t *li = jl_new_method_instance_uninit();
li->inferred = (jl_value_t*)src;
li->specTypes = (jl_value_t*)jl_emptytuple_type;
li->def.module = module;
return li;
}
static void import_module(jl_module_t *m, jl_module_t *import)
{
jl_sym_t *name = import->name;
jl_binding_t *b;
if (jl_binding_resolved_p(m, name)) {
b = jl_get_binding(m, name);
if (b->owner != m || (b->value && b->value != (jl_value_t*)import)) {
jl_errorf("importing %s into %s conflicts with an existing identifier",
jl_symbol_name(name), jl_symbol_name(m->name));
}
}
else {
b = jl_get_binding_wr(m, name, 1);
b->imported = 1;
}
if (!b->constp) {
b->value = (jl_value_t*)import;
b->constp = 1;
jl_gc_wb(m, (jl_value_t*)import);
}
}
// replace Base.X with top-level X
static jl_module_t *deprecation_replacement_module(jl_module_t *parent, jl_sym_t *name)
{
if (parent == jl_base_module) {
if (name == jl_symbol("Test") || name == jl_symbol("Mmap"))
return call_require(jl_base_module, name);
}
return NULL;
}
// in `import A.B: x, y, ...`, evaluate the `A.B` part if it exists
static jl_module_t *eval_import_from(jl_module_t *m, jl_expr_t *ex, const char *keyword)
{
if (jl_expr_nargs(ex) == 1 && jl_is_expr(jl_exprarg(ex, 0))) {
jl_expr_t *fr = (jl_expr_t*)jl_exprarg(ex, 0);
if (fr->head == colon_sym) {
if (jl_expr_nargs(fr) > 0 && jl_is_expr(jl_exprarg(fr, 0))) {
jl_expr_t *path = (jl_expr_t*)jl_exprarg(fr, 0);
if (((jl_expr_t*)path)->head == dot_sym) {
jl_sym_t *name = NULL;
jl_module_t *from = eval_import_path(m, NULL, path->args, &name, "import");
if (name != NULL) {
from = (jl_module_t*)jl_eval_global_var(from, name);
if (!jl_is_module(from))
jl_errorf("invalid %s path: \"%s\" does not name a module", keyword, jl_symbol_name(name));
}
return from;
}
}
jl_errorf("malformed \"%s:\" expression", keyword);
}
}
return NULL;
}
static jl_code_info_t *expr_to_code_info(jl_value_t *expr)
{
jl_code_info_t *src = jl_new_code_info_uninit();
JL_GC_PUSH1(&src);
if (!jl_is_expr(expr) || ((jl_expr_t*)expr)->head != body_sym) {
jl_array_t *body = jl_alloc_vec_any(1);
src->code = body;
jl_gc_wb(src, body);
jl_array_ptr_set(body, 0, (jl_value_t*)jl_exprn(return_sym, 1));
jl_array_ptr_set(((jl_expr_t*)jl_array_ptr_ref(body, 0))->args, 0, expr);
}
else {
src->code = ((jl_expr_t*)expr)->args;
jl_gc_wb(src, src->code);
}
src->slotnames = jl_alloc_vec_any(0);
jl_gc_wb(src, src->slotnames);
src->slottypes = jl_nothing;
src->slotflags = jl_alloc_array_1d(jl_array_uint8_type, 0);
jl_gc_wb(src, src->slotflags);
src->ssavaluetypes = jl_box_long(0);
jl_gc_wb(src, src->ssavaluetypes);
src->method_for_inference_limit_heuristics = jl_nothing;
src->codelocs = jl_nothing;
src->linetable = jl_nothing;
src->ssaflags = jl_alloc_array_1d(jl_array_uint8_type, 0);
JL_GC_POP();
return src;
}
jl_value_t *jl_toplevel_eval_flex(jl_module_t *m, jl_value_t *e, int fast, int expanded)
{
jl_ptls_t ptls = jl_get_ptls_states();
if (!jl_is_expr(e)) {
if (jl_is_linenode(e)) {
jl_lineno = jl_linenode_line(e);
return jl_nothing;
}
return jl_interpret_toplevel_expr_in(m, e, NULL, NULL);
}
jl_expr_t *ex = (jl_expr_t*)e;
if (ex->head == dot_sym) {
if (jl_expr_nargs(ex) != 2)
jl_error("syntax: malformed \".\" expression");
jl_value_t *lhs = jl_exprarg(ex, 0);
jl_value_t *rhs = jl_exprarg(ex, 1);
// only handle `a.b` syntax here
if (jl_is_quotenode(rhs) && jl_is_symbol(jl_fieldref(rhs,0)))
return jl_eval_dot_expr(m, lhs, rhs, fast);
}
if (ptls->in_pure_callback) {
jl_error("eval cannot be used in a generated function");
}
else if (ex->head == module_sym) {
return jl_eval_module_expr(m, ex);
}
else if (ex->head == importall_sym) {
jl_sym_t *name = NULL;
jl_depwarn("`importall` is deprecated, use `using` or individual `import` statements instead",
(jl_value_t*)jl_symbol("importall"));
jl_module_t *from = eval_import_from(m, ex, "importall");
size_t i = 0;
if (from) {
i = 1;
ex = (jl_expr_t*)jl_exprarg(ex, 0);
}
for (; i < jl_expr_nargs(ex); i++) {
jl_value_t *a = jl_exprarg(ex, i);
if (jl_is_expr(a) && ((jl_expr_t*)a)->head == dot_sym) {
name = NULL;
jl_module_t *import = eval_import_path(m, from, ((jl_expr_t*)a)->args, &name, "importall");
if (name != NULL) {
import = (jl_module_t*)jl_eval_global_var(import, name);
if (!jl_is_module(import))
jl_errorf("invalid %s statement: name exists but does not refer to a module", jl_symbol_name(ex->head));
}
jl_module_importall(m, import);
}
}
return jl_nothing;
}
else if (ex->head == using_sym) {
jl_sym_t *name = NULL;
jl_module_t *from = eval_import_from(m, ex, "using");
size_t i = 0;
if (from) {
i = 1;
ex = (jl_expr_t*)jl_exprarg(ex, 0);
}
for (; i < jl_expr_nargs(ex); i++) {
jl_value_t *a = jl_exprarg(ex, i);
if (jl_is_expr(a) && ((jl_expr_t*)a)->head == dot_sym) {
name = NULL;
jl_module_t *import = eval_import_path(m, from, ((jl_expr_t*)a)->args, &name, "using");
jl_module_t *u = import;
if (name != NULL)
u = (jl_module_t*)jl_eval_global_var(import, name);
if (jl_is_module(u)) {
if (from) {
jl_depwarn("`using A: B` will only be allowed for single bindings, not modules. Use "
"`using A.B` instead",
(jl_value_t*)jl_symbol("using"));
}
jl_module_using(m, u);
if (m == jl_main_module && name == NULL) {
// TODO: for now, `using A` in Main also creates an explicit binding for `A`
// This will possibly be extended to all modules.
import_module(m, u);
}
}
else {
if (!from) {
jl_depwarn("`using A.B` will only be allowed for modules, not single bindings. Use "
"`using A: B` instead",
(jl_value_t*)jl_symbol("using"));
}
jl_module_t *replacement = deprecation_replacement_module(import, name);
if (replacement)
jl_module_using(m, replacement);
else
jl_module_use(m, import, name);
}
}
}
return jl_nothing;
}
else if (ex->head == import_sym) {
jl_sym_t *name = NULL;
jl_module_t *from = eval_import_from(m, ex, "import");
size_t i = 0;
if (from) {
i = 1;
ex = (jl_expr_t*)jl_exprarg(ex, 0);
}
for (; i < jl_expr_nargs(ex); i++) {
jl_value_t *a = jl_exprarg(ex, i);
if (jl_is_expr(a) && ((jl_expr_t*)a)->head == dot_sym) {
name = NULL;
jl_module_t *import = eval_import_path(m, from, ((jl_expr_t*)a)->args, &name, "import");
if (name == NULL) {
import_module(m, import);
}
else {
jl_module_t *replacement = deprecation_replacement_module(import, name);
if (replacement)
import_module(m, replacement);
else
jl_module_import(m, import, name);
}
}
}
return jl_nothing;
}
else 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_array_ptr_ref(ex->args, i);
if (!jl_is_symbol(name))
jl_error("syntax: malformed \"export\" statement");
jl_module_export(m, name);
}
return jl_nothing;
}
else if (ex->head == global_sym) {
// create uninitialized mutable binding for "global x" decl
size_t i, l = jl_array_len(ex->args);
for (i = 0; i < l; i++) {
jl_value_t *a = jl_exprarg(ex, i);
if (!jl_is_symbol(a) && !jl_is_globalref(a))
break;
}
if (i == l) {
for (i = 0; i < l; i++) {
jl_sym_t *gs = (jl_sym_t*)jl_exprarg(ex, i);
jl_module_t *gm = m;
if (jl_is_globalref(gs)) {
gm = jl_globalref_mod(gs);
gs = jl_globalref_name(gs);
}
assert(jl_is_symbol(gs));
jl_get_binding_wr(gm, gs, 0);
}
return jl_nothing;
}
// fall-through to expand to normalize the syntax
}
jl_method_instance_t *li = NULL;
jl_code_info_t *thk = NULL;
JL_GC_PUSH3(&li, &thk, &ex);
if (!expanded && ex->head != body_sym && ex->head != thunk_sym && ex->head != return_sym &&
ex->head != method_sym && ex->head != toplevel_sym && ex->head != error_sym &&
ex->head != jl_incomplete_sym) {
// not yet expanded
ex = (jl_expr_t*)jl_expand(e, m);
}
jl_sym_t *head = jl_is_expr(ex) ? ex->head : NULL;
if (head == toplevel_sym) {
size_t last_age = ptls->world_age;
jl_value_t *res = jl_nothing;
int i;
for (i = 0; i < jl_array_len(ex->args); i++) {
ptls->world_age = jl_world_counter; // eval each statement in the newest world age
res = jl_toplevel_eval_flex(m, jl_array_ptr_ref(ex->args, i), fast, 0);
}
ptls->world_age = last_age;
JL_GC_POP();
return res;
}
else if (head == error_sym || head == jl_incomplete_sym) {
if (jl_expr_nargs(ex) == 0)
jl_errorf("malformed \"%s\" expression", jl_symbol_name(head));
if (jl_is_string(jl_exprarg(ex,0)))
jl_errorf("syntax: %s", jl_string_data(jl_exprarg(ex,0)));
jl_throw(jl_exprarg(ex,0));
}
int has_intrinsics = 0, has_defs = 0, has_loops = 0;
if (head == thunk_sym) {
thk = (jl_code_info_t*)jl_exprarg(ex,0);
assert(jl_is_code_info(thk));
assert(jl_typeis(thk->code, jl_array_any_type));
body_attributes((jl_array_t*)thk->code, &has_intrinsics, &has_defs, &has_loops);
}
else if (head == body_sym) {
thk = expr_to_code_info((jl_value_t*)ex);
body_attributes((jl_array_t*)thk->code, &has_intrinsics, &has_defs, &has_loops);
}
else {
expr_attributes((jl_value_t*)ex, &has_intrinsics, &has_defs);
}
jl_value_t *result;
if (has_intrinsics || (!has_defs && fast && has_loops &&
jl_options.compile_enabled != JL_OPTIONS_COMPILE_OFF)) {
// use codegen
if (thk == NULL)
thk = expr_to_code_info((jl_value_t*)ex);
li = method_instance_for_thunk(thk, m);
jl_resolve_globals_in_ir((jl_array_t*)thk->code, m, NULL, 0);
// Don't infer blocks containing e.g. method definitions, since it's probably not
// worthwhile and also unsound (see #24316).
// TODO: This is still not correct since an `eval` can happen elsewhere, but it
// helps in common cases.
size_t last_age = ptls->world_age;
size_t world = jl_world_counter;
ptls->world_age = world;
if (!has_defs) {
jl_type_infer(&li, world, 0);
}
jl_value_t *dummy_f_arg = NULL;
result = li->invoke(li, &dummy_f_arg, 1);
ptls->world_age = last_age;
}
else {
// use interpreter
if (thk != NULL)
result = jl_interpret_toplevel_thunk(m, thk);
else if (jl_is_toplevel_only_expr((jl_value_t*)ex))
result = jl_toplevel_eval(m, (jl_value_t*)ex);
else
result = jl_interpret_toplevel_expr_in(m, (jl_value_t*)ex, NULL, NULL);
}
JL_GC_POP();
return result;
}
JL_DLLEXPORT jl_value_t *jl_toplevel_eval(jl_module_t *m, jl_value_t *v)
{
return jl_toplevel_eval_flex(m, v, 1, 0);
}
JL_DLLEXPORT jl_value_t *jl_infer_thunk(jl_code_info_t *thk, jl_module_t *m)
{
jl_method_instance_t *li = method_instance_for_thunk(thk, m);
JL_GC_PUSH1(&li);
jl_resolve_globals_in_ir((jl_array_t*)thk->code, m, NULL, 0);
jl_type_infer(&li, jl_get_ptls_states()->world_age, 0);
JL_GC_POP();
return li->rettype;
}
JL_DLLEXPORT jl_value_t *jl_load(jl_module_t *module, const char *fname)
{
if (module->istopmod) {
jl_printf(JL_STDOUT, "%s\r\n", fname);
#ifdef _OS_WINDOWS_
jl_uv_flush(JL_STDOUT);
#endif
}
uv_stat_t stbuf;
if (jl_stat(fname, (char*)&stbuf) != 0 || (stbuf.st_mode & S_IFMT) != S_IFREG) {
jl_errorf("could not open file %s", fname);
}
return jl_parse_eval_all(fname, NULL, 0, module);
}
// load from filename given as a String object
JL_DLLEXPORT jl_value_t *jl_load_(jl_module_t *module, jl_value_t *str)
{
// assume String has a hidden '\0' at the end
return jl_load(module, (const char*)jl_string_data(str));
}
JL_DLLEXPORT jl_value_t *jl_prepend_cwd(jl_value_t *str)
{
size_t sz = 1024;
char path[1024];
int c = uv_cwd(path, &sz);
if (c < 0) {
jl_errorf("could not get current directory");
}
path[sz] = '/'; // fix later with normpath if Windows
const char *fstr = (const char*)jl_string_data(str);
if (strlen(fstr) + sz >= 1024) {
jl_errorf("use a bigger buffer for jl_fullpath");
}
strcpy(path + sz + 1, fstr);
return jl_cstr_to_string(path);
}
#ifdef __cplusplus
}
#endif