JL_DLLEXPORT jl_value_t *jl_macroexpand1(jl_value_t *expr, jl_module_t *inmodule) { JL_TIMING(LOWERING); JL_GC_PUSH1(&expr); expr = jl_copy_ast(expr); expr = jl_expand_macros(expr, inmodule, NULL, 1); expr = jl_call_scm_on_ast("julia-expand-macroscope", expr, inmodule); JL_GC_POP(); return expr; }
// expand in a context where the expression value is unused JL_DLLEXPORT jl_value_t *jl_expand_stmt(jl_value_t *expr, jl_module_t *inmodule) { JL_TIMING(LOWERING); JL_GC_PUSH1(&expr); expr = jl_copy_ast(expr); expr = jl_expand_macros(expr, inmodule, NULL, 0); expr = jl_call_scm_on_ast("jl-expand-to-thunk-stmt", expr, inmodule); JL_GC_POP(); return expr; }
static jl_value_t *jl_expand_macros(jl_value_t *expr, jl_module_t *inmodule, struct macroctx_stack *macroctx, int onelevel) { if (!expr || !jl_is_expr(expr)) return expr; jl_expr_t *e = (jl_expr_t*)expr; if (e->head == inert_sym || e->head == module_sym || //e->head == toplevel_sym || // TODO: enable this once julia-expand-macroscope is fixed / removed e->head == meta_sym) { return expr; } if (e->head == quote_sym && jl_expr_nargs(e) == 1) { expr = jl_call_scm_on_ast("julia-bq-macro", jl_exprarg(e, 0), inmodule); JL_GC_PUSH1(&expr); if (macroctx) { // in a macro, `quote` also implies `escape` jl_expr_t *e2 = jl_exprn(escape_sym, 1); jl_array_ptr_set(e2->args, 0, expr); expr = (jl_value_t*)e2; } expr = jl_expand_macros(expr, inmodule, macroctx, onelevel); JL_GC_POP(); return expr; } if (e->head == hygienicscope_sym && jl_expr_nargs(e) == 2) { struct macroctx_stack newctx; newctx.m = (jl_module_t*)jl_exprarg(e, 1); JL_TYPECHK(hygienic-scope, module, (jl_value_t*)newctx.m); newctx.parent = macroctx; jl_value_t *a = jl_exprarg(e, 0); jl_value_t *a2 = jl_expand_macros(a, inmodule, &newctx, onelevel); if (a != a2) jl_array_ptr_set(e->args, 0, a2); return expr; } if (e->head == macrocall_sym) { struct macroctx_stack newctx; newctx.m = macroctx ? macroctx->m : inmodule; newctx.parent = macroctx; jl_value_t *result = jl_invoke_julia_macro(e->args, inmodule, &newctx.m); jl_value_t *wrap = NULL; JL_GC_PUSH3(&result, &wrap, &newctx.m); // copy and wrap the result in `(hygienic-scope ,result ,newctx) if (jl_is_expr(result) && ((jl_expr_t*)result)->head == escape_sym) result = jl_exprarg(result, 0); else wrap = (jl_value_t*)jl_exprn(hygienicscope_sym, 2); result = jl_copy_ast(result); if (!onelevel) result = jl_expand_macros(result, inmodule, wrap ? &newctx : macroctx, onelevel); if (wrap) { jl_exprargset(wrap, 0, result); jl_exprargset(wrap, 1, newctx.m); result = wrap; } JL_GC_POP(); return result; } if (e->head == escape_sym && macroctx) { macroctx = macroctx->parent; } size_t i; for (i = 0; i < jl_array_len(e->args); i++) { jl_value_t *a = jl_array_ptr_ref(e->args, i); jl_value_t *a2 = jl_expand_macros(a, inmodule, macroctx, onelevel); if (a != a2) jl_array_ptr_set(e->args, i, a2); } return expr; }
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_DLLEXPORT jl_value_t *jl_macroexpand(jl_value_t *expr) { return jl_call_scm_on_ast("jl-macroexpand", expr); }
JL_DLLEXPORT jl_value_t *jl_expand(jl_value_t *expr) { return jl_call_scm_on_ast("jl-expand-to-thunk", expr); }
// TODO: add locks around global state mutation operations jl_value_t *jl_eval_module_expr(jl_module_t *parent_module, jl_expr_t *ex) { jl_ptls_t ptls = jl_get_ptls_states(); assert(ex->head == module_sym); 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 *form = (jl_value_t*)newm; JL_GC_PUSH1(&form); ptrhash_put(&jl_current_modules, (void*)newm, (void*)((uintptr_t)HT_NOTFOUND + 1)); // 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)); // create a hidden gc root for the old module uintptr_t *refcnt = (uintptr_t*)ptrhash_bp(&jl_current_modules, (void*)b->value); *refcnt += 1; } 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; } size_t last_age = ptls->world_age; // add standard imports unless baremodule if (std_imports) { if (jl_base_module != NULL) { jl_add_standard_imports(newm); } // add `eval` function form = jl_call_scm_on_ast("module-default-defs", (jl_value_t*)ex, newm); ptls->world_age = jl_world_counter; jl_toplevel_eval_flex(newm, form, 0, 1); form = NULL; } jl_array_t *exprs = ((jl_expr_t*)jl_exprarg(ex, 2))->args; 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); } ptls->world_age = last_age; #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 uintptr_t *refcnt = (uintptr_t*)ptrhash_bp(&jl_current_modules, (void*)newm); assert(*refcnt > (uintptr_t)HT_NOTFOUND); *refcnt -= 1; // newm should be reachable from somewhere else by now 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*)newm); // defer init of children until parent is done being defined // then initialize all in definition-finished order // at build time, don't run them at all (defer for runtime) if (!jl_generating_output()) { if (!ptrhash_has(&jl_current_modules, (void*)newm->parent)) { size_t i, l = jl_array_len(jl_module_init_order); size_t ns = 0; form = (jl_value_t*)jl_alloc_vec_any(0); for (i = 0; i < l; i++) { jl_module_t *m = (jl_module_t*)jl_array_ptr_ref(jl_module_init_order, i); if (jl_is_submodule(m, newm)) { jl_array_ptr_1d_push((jl_array_t*)form, (jl_value_t*)m); } else if (ns++ != i) { jl_array_ptr_set(jl_module_init_order, ns - 1, (jl_value_t*)m); } } if (ns < l) jl_array_del_end(jl_module_init_order, l - ns); l = jl_array_len(form); for (i = 0; i < l; i++) { jl_module_t *m = (jl_module_t*)jl_array_ptr_ref(form, i); JL_GC_PROMISE_ROOTED(m); jl_module_run_initializer(m); } } } JL_GC_POP(); return (jl_value_t*)newm; }