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gen_mpy.py
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gen_mpy.py
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# TODO
# - Array conversion improvements:
# - return custom iterable object instead of Blob when converting to array
# - check array dim on conversion
# - On print extensions, print the reflected internal representation of the object (worth the extra ROM?)
# - Verify that when mp_obj is given it is indeed the right type (mp_lv_obj_t). Report error if not. can be added to mp_to_lv.
# - Implement inheritance instead of embed base methods (how? seems it's not supported, see https://github.com/micropython/micropython/issues/1159)
# - When converting mp to ptr (and vice versa), verify that types are compatible. Now all pointers are casted to void*.
from __future__ import print_function
import collections
import sys
import struct
import copy
from itertools import chain
from functools import lru_cache
import json
import os
def memoize(func):
@lru_cache(maxsize=1000000)
def memoized(*args, **kwargs):
return func(*args, **kwargs)
return memoized
def eprint(*args, **kwargs):
print(*args, file=sys.stderr, **kwargs)
# from pudb.remote import set_trace
# set_trace(term_size=(180, 50))
from sys import argv
from argparse import ArgumentParser
import subprocess, re
from os.path import dirname, abspath
from os.path import commonprefix
script_path = dirname(abspath(__file__))
sys.path.insert(0, '%s/../pycparser' % script_path)
from pycparser import c_parser, c_ast, c_generator
#
# Argument parsing
#
argParser = ArgumentParser()
argParser.add_argument('-I', '--include', dest='include', help='Preprocesor include path', metavar='<Include Path>', action='append')
argParser.add_argument('-D', '--define', dest='define', help='Define preprocessor macro', metavar='<Macro Name>', action='append')
argParser.add_argument('-E', '--external-preprocessing', dest='ep', help='Prevent preprocessing. Assume input file is already preprocessed', metavar='<Preprocessed File>', action='store')
argParser.add_argument('-M', '--module_name', dest='module_name', help='Module name', metavar='<Module name string>', action='store')
argParser.add_argument('-MP', '--module_prefix', dest='module_prefix', help='Module prefix that starts every function name', metavar='<Prefix string>', action='store')
argParser.add_argument('-MD', '--metadata', dest='metadata', help='Optional file to emit metadata (introspection)', metavar='<MetaData File Name>', action='store')
argParser.add_argument('input', nargs='+')
argParser.set_defaults(include=[], define=[], ep=None, input=[])
args = argParser.parse_args()
module_name = args.module_name
module_prefix = args.module_prefix if args.module_prefix else args.module_name
#
# C proceprocessing, if needed, or just read the input files.
#
if not args.ep:
pp_cmd = 'gcc -E -std=c99 -DPYCPARSER {macros} {include} {input} {first_input}'.format(
input=' '.join('-include %s' % inp for inp in args.input),
first_input= '%s' % args.input[0],
macros = ' '.join('-D%s' % define for define in args.define),
include=' '.join('-I %s' % inc for inc in args.include))
s = subprocess.check_output(pp_cmd.split()).decode()
else:
pp_cmd = 'Preprocessing was disabled.'
s = ''
with open(args.ep, 'r') as f:
s += f.read()
#
# AST parsing helper functions
#
@memoize
def remove_declname(ast):
if hasattr(ast, 'declname'):
ast.declname = None
if isinstance(ast, tuple):
remove_declname(ast[1])
return
for i, c1 in enumerate(ast.children()):
child = ast.children()[i]
remove_declname(child)
@memoize
def add_default_declname(ast, name):
if hasattr(ast, 'declname'):
if (ast.declname == None):
ast.declname = name
if isinstance(ast, tuple):
add_default_declname(ast[1], name)
return
for i, c1 in enumerate(ast.children()):
child = ast.children()[i]
add_default_declname(child, name)
@memoize
def convert_array_to_ptr(ast):
if hasattr(ast, 'type') and isinstance(ast.type, c_ast.ArrayDecl):
ast.type = c_ast.PtrDecl(ast.type.quals if hasattr(ast.type, 'quals') else [], ast.type.type)
if isinstance(ast, tuple):
return convert_array_to_ptr(ast[1])
for i, c1 in enumerate(ast.children()):
child = ast.children()[i]
convert_array_to_ptr(child)
@memoize
def remove_quals(ast):
if hasattr(ast,'quals'):
ast.quals = []
if hasattr(ast,'dim_quals'):
ast.dim_quals = []
if isinstance(ast, tuple):
return remove_quals(ast[1])
for i, c1 in enumerate(ast.children()):
child = ast.children()[i]
if not isinstance(child, c_ast.FuncDecl): # Don't remove quals which change function prototype
remove_quals(child)
@memoize
def remove_explicit_struct(ast):
if isinstance(ast, c_ast.TypeDecl) and isinstance(ast.type, c_ast.Struct):
explicit_struct_name = ast.type.name
# eprint('--> replace %s by %s in:\n%s' % (explicit_struct_name, explicit_structs[explicit_struct_name] if explicit_struct_name in explicit_structs else '???', ast))
if explicit_struct_name:
if explicit_struct_name in explicit_structs:
ast.type = c_ast.IdentifierType([explicit_structs[explicit_struct_name]])
elif explicit_struct_name in structs:
ast.type = c_ast.IdentifierType([explicit_struct_name])
if isinstance(ast, tuple):
return remove_explicit_struct(ast[1])
for i, c1 in enumerate(ast.children()):
child = ast.children()[i]
remove_explicit_struct(child)
@memoize
def get_type(arg, **kwargs):
if isinstance(arg, str):
return arg
remove_quals_arg = 'remove_quals' in kwargs and kwargs['remove_quals']
arg_ast = copy.deepcopy(arg)
remove_explicit_struct(arg_ast)
if remove_quals_arg: remove_quals(arg_ast)
return gen.visit(arg_ast)
@memoize
def get_name(type):
if isinstance(type, c_ast.Decl):
return type.name
if isinstance(type, c_ast.Struct) and type.name and type.name in explicit_structs:
return explicit_structs[type.name]
if isinstance(type, c_ast.Struct):
return type.name
if isinstance(type, c_ast.TypeDecl):
return type.declname
if isinstance(type, c_ast.IdentifierType):
return type.names[0]
if isinstance(type, c_ast.FuncDecl):
return type.type.declname
# if isinstance(type, (c_ast.PtrDecl, c_ast.ArrayDecl)) and hasattr(type.type, 'declname'):
# return type.type.declname
if isinstance(type, (c_ast.PtrDecl, c_ast.ArrayDecl)):
return get_type(type, remove_quals=True)
else:
return gen.visit(type)
@memoize
def remove_arg_names(ast):
if isinstance(ast, c_ast.TypeDecl):
ast.declname = None
remove_arg_names(ast.type)
elif isinstance(ast, c_ast.Decl): remove_arg_names(ast.type)
elif isinstance(ast, c_ast.FuncDecl): remove_arg_names(ast.args)
elif isinstance(ast, c_ast.ParamList):
for param in ast.params: remove_arg_names(param)
# Create a function prototype AST from a function AST
@memoize
def function_prototype(func):
bare_func = copy.deepcopy(func)
remove_declname(bare_func)
ptr_decl = c_ast.PtrDecl(
quals=[],
type=bare_func.type)
func_proto = c_ast.Typename(
name=None,
quals=[],
align=[],
type=ptr_decl)
return func_proto
#
# module specific text patterns
# IGNORECASE and "lower" are used to match both function and enum names
#
base_obj_name = 'obj'
base_obj_type = '%s_%s_t' % (module_prefix, base_obj_name)
lv_ext_pattern = re.compile('^{prefix}_([^_]+)_ext_t'.format(prefix=module_prefix))
lv_obj_pattern = re.compile('^{prefix}_([^_]+)'.format(prefix=module_prefix), re.IGNORECASE)
lv_func_pattern = re.compile('^{prefix}_(.+)'.format(prefix=module_prefix), re.IGNORECASE)
create_obj_pattern = re.compile('^{prefix}_(.+)_create$'.format(prefix=module_prefix))
lv_method_pattern = re.compile('^{prefix}_[^_]+_(.+)'.format(prefix=module_prefix), re.IGNORECASE)
lv_base_obj_pattern = re.compile('^(struct _){{0,1}}{prefix}_{base_name}_t( [*]){{0,1}}'.format(prefix=module_prefix, base_name = base_obj_name))
lv_str_enum_pattern = re.compile('^_{prefix}_STR_(.+)'.format(prefix=module_prefix.upper()))
lv_callback_type_pattern = re.compile('({prefix}_){{0,1}}(.+)_cb(_t){{0,1}}'.format(prefix=module_prefix))
lv_global_callback_pattern = re.compile('.*g_cb_t')
lv_func_returns_array = re.compile('.*_array$')
lv_enum_name_pattern = re.compile('^(ENUM_){{0,1}}({prefix}_){{0,1}}(.*)'.format(prefix=module_prefix.upper()))
# Prevent identifier names which are Python reserved words (add underscore in such case)
def sanitize(id, kwlist =
['False', 'None', 'True', 'and', 'as', 'assert', 'break', 'class', 'continue', 'def', 'del', 'elif', 'else',
'except', 'finally', 'for', 'from', 'global', 'if', 'import', 'in', 'is', 'lambda', 'nonlocal', 'not', 'or',
'pass', 'raise', 'return', 'try', 'while', 'with', 'yield']):
if id in kwlist:
result = "_%s" % id
else:
result = id
result = result.strip()
result = result.replace(' ','_')
result = result.replace('*','_ptr')
return result
@memoize
def simplify_identifier(id):
match_result = lv_func_pattern.match(id)
return match_result.group(1) if match_result else id
def obj_name_from_ext_name(ext_name):
return lv_ext_pattern.match(ext_name).group(1)
def obj_name_from_func_name(func_name):
return lv_obj_pattern.match(func_name).group(1)
def ctor_name_from_obj_name(obj_name):
return '{prefix}_{obj}_create'.format(prefix=module_prefix, obj=obj_name)
def is_method_of(func_name, obj_name):
return func_name.lower().startswith('{prefix}_{obj}_'.format(prefix=module_prefix, obj=obj_name).lower())
def method_name_from_func_name(func_name):
res = lv_method_pattern.match(func_name).group(1)
return res if res != "del" else "delete" # del is a reserved name, don't use it
def get_enum_name(enum):
match_result = lv_enum_name_pattern.match(enum)
return match_result.group(3) if match_result else enum
def str_enum_to_str(str_enum):
res = lv_str_enum_pattern.match(str_enum).group(1)
return ('%s_' % module_prefix.upper()) + res
def is_obj_ctor(func):
# ctor name must match pattern
if not create_obj_pattern.match(func.name): return False
# ctor must return a base_obj type
if not lv_base_obj_pattern.match(get_type(func.type.type, remove_quals=True)): return False
# ctor must receive (at least) one base obj parameters
args = func.type.args.params
if len(args) < 1: return False
if not lv_base_obj_pattern.match(get_type(args[0].type, remove_quals=True)): return False
return True
def is_global_callback(arg_type):
arg_type_str = get_name(arg_type.type)
# print('/* --> is_global_callback %s: %s */' % (lv_global_callback_pattern.match(arg_type_str), arg_type_str))
result = lv_global_callback_pattern.match(arg_type_str)
return result
#
# Initialization, data structures, helper functions
#
# We consider union as a struct, for simplicity
def is_struct(type):
return isinstance(type, c_ast.Struct) or isinstance(type, c_ast.Union)
obj_metadata = collections.OrderedDict()
func_metadata = collections.OrderedDict()
callback_metadata = collections.OrderedDict()
func_prototypes = {}
parser = c_parser.CParser()
gen = c_generator.CGenerator()
ast = parser.parse(s, filename='<none>')
# *************** Fix ***********************************
# this is a fix for structures not getting populated properly from
# forward declarations. pycparser doesn't make the connection between
# a forwrd declaration and the actual declaration so the structures get created
# without any fields. Since there are no fields things like callbacks break
# because the generation code looks for specific field names
# to know if it is valid to be used as a callback.
forward_struct_decls = {}
for item in ast.ext[:]:
# Locate a forward declaration
if (
isinstance(item, c_ast.Decl) and
item.name is None and
isinstance(item.type, c_ast.Struct) and
item.type.name is not None
):
# check to see if there are no fields , and of not store the structure
# as a foward declaration. If it does have fields then build a single
# object that represents the structure with the fiels.
if item.type.decls is None:
forward_struct_decls[item.type.name] = [item]
else:
if item.type.name in forward_struct_decls:
decs = forward_struct_decls[item.type.name]
if len(decs) == 2:
decl, td = decs
td.type.type.decls = item.type.decls[:]
ast.ext.remove(decl)
ast.ext.remove(item)
# there are 3 objects that get created for a formard declaration.
# a structure without any fields, a typedef pointing to that structure.
# and the last is another structure that has fields. So we need to capture
# all 3 parts to build a single object that represents a structure.
elif (
isinstance(item, c_ast.Typedef) and
isinstance(item.type, c_ast.TypeDecl) and
item.name and
item.type.declname and
item.name == item.type.declname and
isinstance(item.type.type, c_ast.Struct) and
item.type.type.decls is None
):
if item.type.type.name in forward_struct_decls:
forward_struct_decls[item.type.type.name].append(item)
# ********************************************************************
# Types and structs
typedefs = [x.type for x in ast.ext if isinstance(x, c_ast.Typedef)] # and not (hasattr(x.type, 'declname') and lv_base_obj_pattern.match(x.type.declname))]
# print('/* %s */' % str(typedefs))
synonym = {}
for t in typedefs:
if isinstance(t, c_ast.TypeDecl) and isinstance(t.type, c_ast.IdentifierType):
if t.declname != t.type.names[0]:
synonym[t.declname] = t.type.names[0]
# eprint('%s === %s' % (t.declname, t.type.names[0]))
if isinstance(t, c_ast.TypeDecl) and isinstance(t.type, c_ast.Struct):
if t.declname != t.type.name:
synonym[t.declname] = t.type.name
# eprint('%s === struct %s' % (t.declname, t.type.name))
struct_typedefs = [typedef for typedef in typedefs if is_struct(typedef.type)]
structs_without_typedef = collections.OrderedDict((decl.type.name, decl.type) for decl in ast.ext if hasattr(decl, 'type') and is_struct(decl.type))
# for typedefs that referenced to a forward declaration struct, replace it with the real definition.
for typedef in struct_typedefs:
if typedef.type.decls is None: # None means it's a forward declaration
struct_name = typedef.type.name
# check if it's found in `structs_without_typedef`. It actually has the typedef. Replace type with it.
if typedef.type.name in structs_without_typedef:
typedef.type = structs_without_typedef[struct_name]
structs = collections.OrderedDict((typedef.declname, typedef.type) for typedef in struct_typedefs if typedef.declname and typedef.type.decls) # and not lv_base_obj_pattern.match(typedef.declname))
structs.update(structs_without_typedef) # This is for struct without typedef
explicit_structs = collections.OrderedDict((typedef.type.name, typedef.declname) for typedef in struct_typedefs if typedef.type.name) # and not lv_base_obj_pattern.match(typedef.type.name))
opaque_structs = collections.OrderedDict((typedef.declname, c_ast.Struct(name=typedef.declname, decls=[])) for typedef in typedefs if isinstance(typedef.type, c_ast.Struct) and typedef.type.decls == None)
structs.update({k:v for k,v in opaque_structs.items() if k not in structs})
# print('/* --> opaque structs len = %d */' % len(opaque_structs))
# print('/* --> opaque structs %s */' % ',\n'.join([struct_name for struct_name in opaque_structs]))
# print('/* --> structs:\n%s */' % ',\n'.join(sorted(str(structs[struct_name]) for struct_name in structs if struct_name)))
# print('/* --> structs_without_typedef:\n%s */' % ',\n'.join(sorted(str(structs_without_typedef[struct_name]) for struct_name in structs_without_typedef if struct_name)))
# print('/* --> explicit_structs:\n%s */' % ',\n'.join(sorted(struct_name + " = " + str(explicit_structs[struct_name]) for struct_name in explicit_structs if struct_name)))
# print('/* --> structs without typedef:\n%s */' % ',\n'.join(sorted(str(structs[struct_name]) for struct_name in structs_without_typedef)))
# Functions and objects
func_defs = [x.decl for x in ast.ext if isinstance(x, c_ast.FuncDef)]
func_decls = [x for x in ast.ext if isinstance(x, c_ast.Decl) and isinstance(x.type, c_ast.FuncDecl)]
all_funcs = func_defs + func_decls
funcs = [f for f in all_funcs if not f.name.startswith('_')] # functions that start with underscore are usually internal
# eprint('... %s' % ',\n'.join(sorted('%s' % func.name for func in funcs)))
obj_ctors = [func for func in funcs if is_obj_ctor(func)]
# eprint('CTORS(%d): %s' % (len(obj_ctors), ', '.join(sorted('%s' % ctor.name for ctor in obj_ctors))))
for obj_ctor in obj_ctors:
funcs.remove(obj_ctor)
obj_names = [create_obj_pattern.match(ctor.name).group(1) for ctor in obj_ctors]
def has_ctor(obj_name):
return ctor_name_from_obj_name(obj_name) in [ctor.name for ctor in obj_ctors]
def get_ctor(obj_name):
global obj_ctors
return next(ctor for ctor in obj_ctors if ctor.name == ctor_name_from_obj_name(obj_name))
def get_methods(obj_name):
global funcs
return [func for func in funcs \
if is_method_of(func.name,obj_name) and \
(not func.name == ctor_name_from_obj_name(obj_name))]
@memoize
def noncommon_part(member_name, stem_name):
common_part = commonprefix([member_name, stem_name])
n = len(common_part) - 1
while n > 0 and member_name[n] != '_': n-=1
return member_name[n+1:]
@memoize
def get_first_arg(func):
if not func.type.args:
return None
if not len(func.type.args.params) >= 1:
return None
if not func.type.args.params[0].type:
return None
return func.type.args.params[0].type
@memoize
def get_first_arg_type(func):
first_arg = get_first_arg(func)
if not first_arg:
return None
if not first_arg.type:
return None
return get_type(first_arg.type, remove_quals = True)
def get_base_struct_name(struct_name):
return struct_name[:-2] if struct_name.endswith('_t') else struct_name
# "struct function" starts with struct name (without _t), and their first argument is a pointer to the struct
# Need also to take into account struct functions of aliases of current struct.
@memoize
def get_struct_functions(struct_name):
global funcs
if not struct_name:
return []
base_struct_name = get_base_struct_name(struct_name)
# eprint("get_struct_functions %s: %s" % (struct_name, [get_type(func.type.args.params[0].type.type, remove_quals = True) for func in funcs if func.name.startswith(base_struct_name)]))
# eprint("get_struct_functions %s: %s" % (struct_name, struct_aliases[struct_name] if struct_name in struct_aliases else ""))
# for func in funcs:
# print("/* get_struct_functions: func=%s, struct=%s, noncommon part=%s */" % (simplify_identifier(func.name), simplify_identifier(struct_name),
# noncommon_part(simplify_identifier(func.name), simplify_identifier(struct_name))))
reverse_aliases = [alias for alias in struct_aliases if struct_aliases[alias] == struct_name]
return ([func for func in funcs \
if noncommon_part(simplify_identifier(func.name), simplify_identifier(struct_name)) != simplify_identifier(func.name) \
and get_first_arg_type(func) == struct_name] if (struct_name in structs or len(reverse_aliases) > 0) else []) + \
(get_struct_functions(struct_aliases[struct_name]) if struct_name in struct_aliases else [])
@memoize
def is_struct_function(func):
return func in get_struct_functions(get_first_arg_type(func))
# is_static_member returns true if function does not receive the obj as the first argument
# and the object is not a struct function
@memoize
def is_static_member(func, obj_type=base_obj_type):
first_arg = get_first_arg(func)
# print("/* %s : get_first_arg = %s */" % (get_name(func), first_arg))
if first_arg:
if isinstance(first_arg, c_ast.ArrayDecl):
return True # Arrays cannot have non static members
if is_struct_function(func):
return False
first_arg_type = get_first_arg_type(func)
return (first_arg_type == None) or (first_arg_type != obj_type)
# All object should inherit directly from base_obj, and not according to lv_ext, as disccussed on https://github.com/littlevgl/lv_binding_micropython/issues/19
parent_obj_names = {child_name: base_obj_name for child_name in obj_names if child_name != base_obj_name}
parent_obj_names[base_obj_name] = None
# Populate inheritance hierarchy according to lv_ext structures
# exts = {obj_name_from_ext_name(ext.name): ext for ext in ast.ext if hasattr(ext, 'name') and ext.name is not None and lv_ext_pattern.match(ext.name)}
# for obj_name, ext in exts.items():
# try:
# parent_ext_name = ext.type.type.decls[0].type.type.names[0]
# if lv_ext_pattern.match(parent_ext_name):
# parent_obj_names[obj_name] = obj_name_from_ext_name(parent_ext_name)
# except AttributeError:
# pass
# Parse Enums
enum_defs = [x for x in ast.ext if hasattr(x,'type') and isinstance(x.type, c_ast.Enum)]
enum_defs += [x.type for x in ast.ext if hasattr(x, 'type') and hasattr(x.type, 'type') and isinstance(x.type, c_ast.TypeDecl) and isinstance(x.type.type, c_ast.Enum)]
# Enum member access functions.
def get_enum_members(obj_name):
global enums
if not obj_name in enums:
return []
return [enum_member_name for enum_member_name, value in enums[obj_name].items()]
def get_enum_member_name(enum_member):
if enum_member[0].isdigit():
enum_member = '_' + enum_member # needs to be a valid attribute name
return enum_member
def get_enum_value(obj_name, enum_member):
return enums[obj_name][enum_member]
# eprint(enums)
# parse function pointers
func_typedefs = collections.OrderedDict((t.name, t) for t in ast.ext if isinstance(t, c_ast.Typedef) and isinstance(t.type, c_ast.PtrDecl) and isinstance(t.type.type, c_ast.FuncDecl))
# Global blobs
blobs = collections.OrderedDict((decl.name, decl.type.type) for decl in ast.ext \
if isinstance(decl, c_ast.Decl) \
and 'extern' in decl.storage \
and hasattr(decl, 'type') \
and isinstance(decl.type, c_ast.TypeDecl)
and not decl.name.startswith('_'))
blobs['_nesting'] = parser.parse('extern int _nesting;').ext[0].type.type
int_constants = []
#
# Type convertors
#
class MissingConversionException(ValueError):
pass
mp_to_lv = {
'mp_obj_t' : '(mp_obj_t)',
'va_list' : None,
'void *' : 'mp_to_ptr',
'const uint8_t *' : 'mp_to_ptr',
'const void *' : 'mp_to_ptr',
'bool' : 'mp_obj_is_true',
'char *' : '(char*)convert_from_str',
'char **' : 'mp_write_ptr_C_Pointer',
'const char *' : 'convert_from_str',
'const char **' : 'mp_write_ptr_C_Pointer',
'%s_obj_t *'% module_prefix : 'mp_to_lv',
'uint8_t' : '(uint8_t)mp_obj_get_int',
'uint16_t' : '(uint16_t)mp_obj_get_int',
'uint32_t' : '(uint32_t)mp_obj_get_int',
'uint64_t' : '(uint64_t)mp_obj_get_ull',
'unsigned' : '(unsigned)mp_obj_get_int',
'unsigned int' : '(unsigned int)mp_obj_get_int',
'unsigned char' : '(unsigned char)mp_obj_get_int',
'unsigned short' : '(unsigned short)mp_obj_get_int',
'unsigned long' : '(unsigned long)mp_obj_get_int',
'unsigned long int' : '(unsigned long int)mp_obj_get_int',
'unsigned long long' : '(unsigned long long)mp_obj_get_ull',
'unsigned long long int' : '(unsigned long long int)mp_obj_get_ull',
'int8_t' : '(int8_t)mp_obj_get_int',
'int16_t' : '(int16_t)mp_obj_get_int',
'int32_t' : '(int32_t)mp_obj_get_int',
'int64_t' : '(int64_t)mp_obj_get_ull',
'size_t' : '(size_t)mp_obj_get_int',
'int' : '(int)mp_obj_get_int',
'char' : '(char)mp_obj_get_int',
'short' : '(short)mp_obj_get_int',
'long' : '(long)mp_obj_get_int',
'long int' : '(long int)mp_obj_get_int',
'long long' : '(long long)mp_obj_get_ull',
'long long int' : '(long long int)mp_obj_get_ull',
'float' : '(float)mp_obj_get_float',
}
lv_to_mp = {
'mp_obj_t' : '(mp_obj_t)',
'va_list' : None,
'void *' : 'ptr_to_mp',
'const uint8_t *' : 'ptr_to_mp',
'const void *' : 'ptr_to_mp',
'bool' : 'convert_to_bool',
'char *' : 'convert_to_str',
'char **' : 'mp_read_ptr_C_Pointer',
'const char *' : 'convert_to_str',
'const char **' : 'mp_read_ptr_C_Pointer',
'%s_obj_t *'% module_prefix : 'lv_to_mp',
'uint8_t' : 'mp_obj_new_int_from_uint',
'uint16_t' : 'mp_obj_new_int_from_uint',
'uint32_t' : 'mp_obj_new_int_from_uint',
'uint64_t' : 'mp_obj_new_int_from_ull',
'unsigned' : 'mp_obj_new_int_from_uint',
'unsigned int' : 'mp_obj_new_int_from_uint',
'unsigned char' : 'mp_obj_new_int_from_uint',
'unsigned short' : 'mp_obj_new_int_from_uint',
'unsigned long' : 'mp_obj_new_int_from_uint',
'unsigned long int' : 'mp_obj_new_int_from_uint',
'unsigned long long' : 'mp_obj_new_int_from_ull',
'unsigned long long int' : 'mp_obj_new_int_from_ull',
'int8_t' : 'mp_obj_new_int',
'int16_t' : 'mp_obj_new_int',
'int32_t' : 'mp_obj_new_int',
'int64_t' : 'mp_obj_new_int_from_ll',
'size_t' : 'mp_obj_new_int_from_uint',
'int' : 'mp_obj_new_int',
'char' : 'mp_obj_new_int',
'short' : 'mp_obj_new_int',
'long' : 'mp_obj_new_int',
'long int' : 'mp_obj_new_int',
'long long' : 'mp_obj_new_int_from_ll',
'long long int' : 'mp_obj_new_int_from_ll',
'float' : 'mp_obj_new_float',
}
lv_mp_type = {
'mp_obj_t' : '%s*' % base_obj_type,
'va_list' : None,
'void *' : 'void*',
'const uint8_t *' : 'void*',
'const void *' : 'void*',
'bool' : 'bool',
'char *' : 'char*',
'char **' : 'char**',
'const char *' : 'char*',
'const char **' : 'char**',
'%s_obj_t *'% module_prefix : '%s*' % base_obj_type,
'uint8_t' : 'int',
'uint16_t' : 'int',
'uint32_t' : 'int',
'uint64_t' : 'int',
'unsigned' : 'int',
'unsigned int' : 'int',
'unsigned char' : 'int',
'unsigned short' : 'int',
'unsigned long' : 'int',
'unsigned long int' : 'int',
'unsigned long long' : 'int',
'unsigned long long int' : 'int',
'int8_t' : 'int',
'int16_t' : 'int',
'int32_t' : 'int',
'int64_t' : 'int',
'size_t' : 'int',
'int' : 'int',
'char' : 'int',
'short' : 'int',
'long' : 'int',
'long int' : 'int',
'long long' : 'int',
'long long int' : 'int',
'void' : None,
'float' : 'float',
}
lv_to_mp_byref = {}
lv_to_mp_funcptr = {}
# Add native array supported types
# These types would be converted automatically to/from array type.
# Supported array (pointer) types are signed/unsigned int: 8bit, 16bit, 32bit and 64bit.
def register_int_ptr_type(convertor, *types):
for ptr_type in types:
for qualified_ptr_type in [ptr_type, 'const '+ptr_type]:
mp_to_lv[qualified_ptr_type] = 'mp_array_to_%s' % (convertor)
lv_to_mp[qualified_ptr_type] = 'mp_array_from_%s' % (convertor)
lv_mp_type[qualified_ptr_type] = 'void*'
register_int_ptr_type('u8ptr',
'unsigned char *',
'uint8_t *')
# char* is considered as string, not int ptr!
'''
register_int_ptr_type('i8ptr',
'char *',
'int8_t *')
'''
register_int_ptr_type('u16ptr',
'unsigned short *',
'uint16_t *')
register_int_ptr_type('i16ptr',
'short *',
'int16_t *')
register_int_ptr_type('u32ptr',
'uint32_t *',
'unsigned *',
'unsigned int *',
'unsigned long *',
'unsigned long int *',
'size_t *')
register_int_ptr_type('i32ptr',
'int32_t *',
'signed *',
'signed int *',
'signed long *',
'signed long int *',
'long *',
'long int *',
'int *')
register_int_ptr_type('u64ptr',
'int64_t *',
'signed long long *',
'long long *',
'long long int *')
register_int_ptr_type('i64ptr',
'uint64_t *',
'unsigned long long *',
'unsigned long long int *')
#
# Emit Header
#
headers = args.input
for header in headers:
if 'lvgl.h' in header:
path, _ = os.path.split(header)
if path and path != 'lvgl.h':
path = os.path.join(path, 'src', 'lvgl_private.h')
else:
path = 'src/lvgl_private.h'
headers.append(path)
break
print ("""
/*
* Auto-Generated file, DO NOT EDIT!
*
* Command line:
* {cmd_line}
*
* Preprocessing command:
* {pp_cmd}
*
* Generating Objects: {objs}
*/
/*
* Mpy includes
*/
#include <stdlib.h>
#include <string.h>
#include "py/obj.h"
#include "py/objint.h"
#include "py/objstr.h"
#include "py/runtime.h"
#include "py/binary.h"
#include "py/objarray.h"
#include "py/objtype.h"
#include "py/objexcept.h"
/*
* {module_name} includes
*/
{lv_headers}
""".format(
module_name = module_name,
cmd_line=' '.join(argv),
pp_cmd=pp_cmd,
objs=", ".join(['%s(%s)' % (objname, parent_obj_names[objname]) for objname in obj_names]),
lv_headers='\n'.join('#include "%s"' % header for header in headers)))
#
# Enable objects, if supported
#
if len(obj_names) > 0:
print("""
#define LV_OBJ_T {obj_type}
typedef struct mp_lv_obj_type_t {{
const lv_obj_class_t *lv_obj_class;
const mp_obj_type_t *mp_obj_type;
}} mp_lv_obj_type_t;
STATIC const mp_lv_obj_type_t mp_lv_{base_obj}_type;
STATIC const mp_lv_obj_type_t *mp_lv_obj_types[];
STATIC inline const mp_obj_type_t *get_BaseObj_type()
{{
return mp_lv_{base_obj}_type.mp_obj_type;
}}
MP_DEFINE_EXCEPTION(LvReferenceError, Exception)
""".format(
obj_type = base_obj_type,
base_obj = base_obj_name
))
#
# Emit Mpy helper functions
#
print("""
/*
* Helper functions
*/
#ifndef GENMPY_UNUSED
#ifdef __GNUC__
#define GENMPY_UNUSED __attribute__ ((unused))
#else
#define GENMPY_UNUSED
#endif // __GNUC__
#endif // GENMPY_UNUSED
// Custom function mp object
typedef mp_obj_t (*mp_fun_ptr_var_t)(size_t n, const mp_obj_t *, void *ptr);
typedef struct mp_lv_obj_fun_builtin_var_t {
mp_obj_base_t base;
mp_uint_t n_args;
mp_fun_ptr_var_t mp_fun;
void *lv_fun;
} mp_lv_obj_fun_builtin_var_t;
STATIC mp_obj_t lv_fun_builtin_var_call(mp_obj_t self_in, size_t n_args, size_t n_kw, const mp_obj_t *args);
STATIC mp_int_t mp_func_get_buffer(mp_obj_t self_in, mp_buffer_info_t *bufinfo, mp_uint_t flags);
GENMPY_UNUSED STATIC MP_DEFINE_CONST_OBJ_TYPE(
mp_lv_type_fun_builtin_var,
MP_QSTR_function,
MP_TYPE_FLAG_BINDS_SELF | MP_TYPE_FLAG_BUILTIN_FUN,
call, lv_fun_builtin_var_call,
unary_op, mp_generic_unary_op,
buffer, mp_func_get_buffer
);
GENMPY_UNUSED STATIC MP_DEFINE_CONST_OBJ_TYPE(
mp_lv_type_fun_builtin_static_var,
MP_QSTR_function,
MP_TYPE_FLAG_BUILTIN_FUN,
call, lv_fun_builtin_var_call,
unary_op, mp_generic_unary_op,
buffer, mp_func_get_buffer
);
STATIC mp_obj_t lv_fun_builtin_var_call(mp_obj_t self_in, size_t n_args, size_t n_kw, const mp_obj_t *args) {
assert(MP_OBJ_IS_TYPE(self_in, &mp_lv_type_fun_builtin_var) ||
MP_OBJ_IS_TYPE(self_in, &mp_lv_type_fun_builtin_static_var));
mp_lv_obj_fun_builtin_var_t *self = MP_OBJ_TO_PTR(self_in);
mp_arg_check_num(n_args, n_kw, self->n_args, self->n_args, false);
return self->mp_fun(n_args, args, self->lv_fun);
}
STATIC mp_int_t mp_func_get_buffer(mp_obj_t self_in, mp_buffer_info_t *bufinfo, mp_uint_t flags) {
(void)flags;
assert(MP_OBJ_IS_TYPE(self_in, &mp_lv_type_fun_builtin_var) ||
MP_OBJ_IS_TYPE(self_in, &mp_lv_type_fun_builtin_static_var));
mp_lv_obj_fun_builtin_var_t *self = MP_OBJ_TO_PTR(self_in);
bufinfo->buf = &self->lv_fun;
bufinfo->len = sizeof(self->lv_fun);
bufinfo->typecode = BYTEARRAY_TYPECODE;
return 0;
}
#define MP_DEFINE_CONST_LV_FUN_OBJ_VAR(obj_name, n_args, mp_fun, lv_fun) \\
const mp_lv_obj_fun_builtin_var_t obj_name = \\
{{&mp_lv_type_fun_builtin_var}, n_args, mp_fun, lv_fun}
#define MP_DEFINE_CONST_LV_FUN_OBJ_STATIC_VAR(obj_name, n_args, mp_fun, lv_fun) \\
const mp_lv_obj_fun_builtin_var_t obj_name = \\
{{&mp_lv_type_fun_builtin_static_var}, n_args, mp_fun, lv_fun}
// Casting
typedef struct mp_lv_struct_t
{
mp_obj_base_t base;
void *data;
} mp_lv_struct_t;
STATIC const mp_lv_struct_t mp_lv_null_obj;
#ifdef LV_OBJ_T
STATIC mp_int_t mp_lv_obj_get_buffer(mp_obj_t self_in, mp_buffer_info_t *bufinfo, mp_uint_t flags);
#else
STATIC mp_int_t mp_lv_obj_get_buffer(mp_obj_t self_in, mp_buffer_info_t *bufinfo, mp_uint_t flags){ return 0; }
#endif
STATIC mp_int_t mp_blob_get_buffer(mp_obj_t self_in, mp_buffer_info_t *bufinfo, mp_uint_t flags);
STATIC mp_obj_t get_native_obj(mp_obj_t mp_obj)
{
if (!MP_OBJ_IS_OBJ(mp_obj)) return mp_obj;
const mp_obj_type_t *native_type = ((mp_obj_base_t*)mp_obj)->type;
if (native_type == NULL)
return NULL;
if (MP_OBJ_TYPE_GET_SLOT_OR_NULL(native_type, parent) == NULL ||
(MP_OBJ_TYPE_GET_SLOT_OR_NULL(native_type, buffer) == mp_blob_get_buffer) ||
(MP_OBJ_TYPE_GET_SLOT_OR_NULL(native_type, buffer) == mp_lv_obj_get_buffer))
return mp_obj;
while (MP_OBJ_TYPE_GET_SLOT_OR_NULL(native_type, parent)) native_type = MP_OBJ_TYPE_GET_SLOT(native_type, parent);
return mp_obj_cast_to_native_base(mp_obj, MP_OBJ_FROM_PTR(native_type));
}
STATIC mp_obj_t dict_to_struct(mp_obj_t dict, const mp_obj_type_t *type);
STATIC mp_obj_t make_new_lv_struct(
const mp_obj_type_t *type,
size_t n_args,
size_t n_kw,
const mp_obj_t *args);
STATIC mp_obj_t cast(mp_obj_t mp_obj, const mp_obj_type_t *mp_type)
{
mp_obj_t res = NULL;
if (mp_obj == mp_const_none && MP_OBJ_TYPE_GET_SLOT_OR_NULL(mp_type, make_new) == &make_new_lv_struct) {
res = MP_OBJ_FROM_PTR(&mp_lv_null_obj);
} else if (MP_OBJ_IS_OBJ(mp_obj)) {
res = get_native_obj(mp_obj);
if (res){
const mp_obj_type_t *res_type = ((mp_obj_base_t*)res)->type;
if (res_type != mp_type){
if (res_type == &mp_type_dict &&
MP_OBJ_TYPE_GET_SLOT_OR_NULL(mp_type, make_new) == &make_new_lv_struct)
res = dict_to_struct(res, mp_type);
else res = NULL;
}
}
}
if (res == NULL) nlr_raise(
mp_obj_new_exception_msg_varg(
&mp_type_SyntaxError, MP_ERROR_TEXT("Can't convert %s to %s!"), mp_obj_get_type_str(mp_obj), qstr_str(mp_type->name)));
return res;
}
// object handling
// This section is enabled only when objects are supported
#ifdef LV_OBJ_T
typedef struct mp_lv_obj_t {
mp_obj_base_t base;
LV_OBJ_T *lv_obj;
LV_OBJ_T *callbacks;
} mp_lv_obj_t;
STATIC inline LV_OBJ_T *mp_to_lv(mp_obj_t mp_obj)
{
if (mp_obj == NULL || mp_obj == mp_const_none) return NULL;
mp_obj_t native_obj = get_native_obj(mp_obj);
if (MP_OBJ_TYPE_GET_SLOT_OR_NULL(mp_obj_get_type(native_obj), buffer) != mp_lv_obj_get_buffer)
return NULL;
mp_lv_obj_t *mp_lv_obj = MP_OBJ_TO_PTR(native_obj);
if (mp_lv_obj->lv_obj == NULL) {
nlr_raise(
mp_obj_new_exception_msg(
&mp_type_LvReferenceError, MP_ERROR_TEXT("Referenced object was deleted!")));
}
return mp_lv_obj->lv_obj;
}
STATIC inline LV_OBJ_T *mp_get_callbacks(mp_obj_t mp_obj)
{
if (mp_obj == NULL || mp_obj == mp_const_none) return NULL;
mp_lv_obj_t *mp_lv_obj = MP_OBJ_TO_PTR(get_native_obj(mp_obj));
if (mp_lv_obj == NULL)
nlr_raise(
mp_obj_new_exception_msg(
&mp_type_SyntaxError, MP_ERROR_TEXT("'user_data' argument must be either a dict or None!")));
if (!mp_lv_obj->callbacks) mp_lv_obj->callbacks = mp_obj_new_dict(0);
return mp_lv_obj->callbacks;
}
STATIC inline const mp_obj_type_t *get_BaseObj_type();
STATIC void mp_lv_delete_cb(lv_event_t * e)
{
LV_OBJ_T *lv_obj = e->current_target;
if (lv_obj){
mp_lv_obj_t *self = lv_obj->user_data;
if (self) {
self->lv_obj = NULL;
}
}
}
STATIC inline mp_obj_t lv_to_mp(LV_OBJ_T *lv_obj)
{
if (lv_obj == NULL) return mp_const_none;
mp_lv_obj_t *self = (mp_lv_obj_t*)lv_obj->user_data;
if (!self)