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/*

* This file is part of the MicroPython project, http://micropython.org/

*

* The MIT License (MIT)

*

* Copyright (c) 2013, 2014 Damien P. George

*

* Permission is hereby granted, free of charge, to any person obtaining a copy

* of this software and associated documentation files (the "Software"), to deal

* in the Software without restriction, including without limitation the rights

* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

* copies of the Software, and to permit persons to whom the Software is

* furnished to do so, subject to the following conditions:

*

* The above copyright notice and this permission notice shall be included in

* all copies or substantial portions of the Software.

*

* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

* THE SOFTWARE.

*/

#include <stdint.h>

#include "py/objfun.h"

#include "py/compile.h"

#include "py/runtime.h"

#include "py/builtin.h"

#if MICROPY_PY_BUILTINS_COMPILE

typedef struct _mp_obj_code_t {

mp_obj_base_t base;

mp_obj_t module_fun;

} mp_obj_code_t;

static MP_DEFINE_CONST_OBJ_TYPE(

mp_type_code,

MP_QSTR_code,

MP_TYPE_FLAG_NONE

);

static mp_obj_t code_execute(mp_obj_code_t *self, mp_obj_dict_t *globals, mp_obj_dict_t *locals) {

// save context

nlr_jump_callback_node_globals_locals_t ctx;

ctx.globals = mp_globals_get();

ctx.locals = mp_locals_get();

// set new context

mp_globals_set(globals);

mp_locals_set(locals);

// set exception handler to restore context if an exception is raised

nlr_push_jump_callback(&ctx.callback, mp_globals_locals_set_from_nlr_jump_callback);

// The call to mp_parse_compile_execute() in mp_builtin_compile() below passes

// NULL for the globals, so repopulate that entry now with the correct globals.

if (mp_obj_is_type(self->module_fun, &mp_type_fun_bc)

#if MICROPY_EMIT_NATIVE

|| mp_obj_is_type(self->module_fun, &mp_type_fun_native)

#endif

) {

mp_obj_fun_bc_t *fun_bc = MP_OBJ_TO_PTR(self->module_fun);

((mp_module_context_t *)fun_bc->context)->module.globals = globals;

}

// execute code

mp_obj_t ret = mp_call_function_0(self->module_fun);

// deregister exception handler and restore context

nlr_pop_jump_callback(true);

// return value

return ret;

}

static mp_obj_t mp_builtin_compile(size_t n_args, const mp_obj_t *args) {

(void)n_args;

// get the source

size_t str_len;

const char *str = mp_obj_str_get_data(args[0], &str_len);

// get the filename

qstr filename = mp_obj_str_get_qstr(args[1]);

// create the lexer

mp_lexer_t *lex = mp_lexer_new_from_str_len(filename, str, str_len, 0);

// get the compile mode

qstr mode = mp_obj_str_get_qstr(args[2]);

mp_parse_input_kind_t parse_input_kind;

switch (mode) {

case MP_QSTR_single:

parse_input_kind = MP_PARSE_SINGLE_INPUT;

break;

case MP_QSTR_exec:

parse_input_kind = MP_PARSE_FILE_INPUT;

break;

case MP_QSTR_eval:

parse_input_kind = MP_PARSE_EVAL_INPUT;

break;

default:

mp_raise_ValueError(MP_ERROR_TEXT("bad compile mode"));

}

mp_obj_code_t *code = mp_obj_malloc(mp_obj_code_t, &mp_type_code);

code->module_fun = mp_parse_compile_execute(lex, parse_input_kind, NULL, NULL);

return MP_OBJ_FROM_PTR(code);

}

MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_compile_obj, 3, 6, mp_builtin_compile);

#endif // MICROPY_PY_BUILTINS_COMPILE

#if MICROPY_PY_BUILTINS_EVAL_EXEC

static mp_obj_t eval_exec_helper(size_t n_args, const mp_obj_t *args, mp_parse_input_kind_t parse_input_kind) {

// work out the context

mp_obj_dict_t *globals = mp_globals_get();

mp_obj_dict_t *locals = mp_locals_get();

for (size_t i = 1; i < 3 && i < n_args; ++i) {

if (args[i] != mp_const_none) {

if (!mp_obj_is_type(args[i], &mp_type_dict)) {

mp_raise_TypeError(NULL);

}

locals = MP_OBJ_TO_PTR(args[i]);

if (i == 1) {

globals = locals;

}

}

}

#if MICROPY_PY_BUILTINS_COMPILE

if (mp_obj_is_type(args[0], &mp_type_code)) {

return code_execute(MP_OBJ_TO_PTR(args[0]), globals, locals);

}

#endif

// create the lexer

// MP_PARSE_SINGLE_INPUT is used to indicate a file input

mp_lexer_t *lex;

if (MICROPY_PY_BUILTINS_EXECFILE && parse_input_kind == MP_PARSE_SINGLE_INPUT) {

lex = mp_lexer_new_from_file(mp_obj_str_get_qstr(args[0]));

parse_input_kind = MP_PARSE_FILE_INPUT;

} else {

// Extract the source code.

mp_buffer_info_t bufinfo;

mp_get_buffer_raise(args[0], &bufinfo, MP_BUFFER_READ);

lex = mp_lexer_new_from_str_len(MP_QSTR__lt_string_gt_, bufinfo.buf, bufinfo.len, 0);

}

return mp_parse_compile_execute(lex, parse_input_kind, globals, locals);

}

static mp_obj_t mp_builtin_eval(size_t n_args, const mp_obj_t *args) {

return eval_exec_helper(n_args, args, MP_PARSE_EVAL_INPUT);

}

MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_eval_obj, 1, 3, mp_builtin_eval);

static mp_obj_t mp_builtin_exec(size_t n_args, const mp_obj_t *args) {

return eval_exec_helper(n_args, args, MP_PARSE_FILE_INPUT);

}

MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_exec_obj, 1, 3, mp_builtin_exec);

#endif // MICROPY_PY_BUILTINS_EVAL_EXEC

#if MICROPY_PY_BUILTINS_EXECFILE

static mp_obj_t mp_builtin_execfile(size_t n_args, const mp_obj_t *args) {

// MP_PARSE_SINGLE_INPUT is used to indicate a file input

return eval_exec_helper(n_args, args, MP_PARSE_SINGLE_INPUT);

}

MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_execfile_obj, 1, 3, mp_builtin_execfile);

#endif