Revision 0f923be2
b/scripts/qapi.py | ||
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# QAPI helper library |
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# |
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# Copyright IBM, Corp. 2011 |
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# |
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# Authors: |
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# Anthony Liguori <aliguori@us.ibm.com> |
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# |
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# This work is licensed under the terms of the GNU GPLv2. |
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# See the COPYING.LIB file in the top-level directory. |
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from ordereddict import OrderedDict |
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def tokenize(data): |
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while len(data): |
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if data[0] in ['{', '}', ':', ',', '[', ']']: |
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yield data[0] |
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data = data[1:] |
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elif data[0] in ' \n': |
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data = data[1:] |
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elif data[0] == "'": |
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data = data[1:] |
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string = '' |
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while data[0] != "'": |
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string += data[0] |
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data = data[1:] |
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data = data[1:] |
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yield string |
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def parse(tokens): |
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if tokens[0] == '{': |
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ret = OrderedDict() |
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tokens = tokens[1:] |
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while tokens[0] != '}': |
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key = tokens[0] |
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tokens = tokens[1:] |
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tokens = tokens[1:] # : |
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value, tokens = parse(tokens) |
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if tokens[0] == ',': |
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tokens = tokens[1:] |
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ret[key] = value |
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tokens = tokens[1:] |
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return ret, tokens |
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elif tokens[0] == '[': |
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ret = [] |
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tokens = tokens[1:] |
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while tokens[0] != ']': |
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value, tokens = parse(tokens) |
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if tokens[0] == ',': |
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tokens = tokens[1:] |
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ret.append(value) |
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tokens = tokens[1:] |
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return ret, tokens |
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else: |
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return tokens[0], tokens[1:] |
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def evaluate(string): |
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return parse(map(lambda x: x, tokenize(string)))[0] |
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def parse_schema(fp): |
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exprs = [] |
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expr = '' |
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expr_eval = None |
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for line in fp: |
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if line.startswith('#') or line == '\n': |
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continue |
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if line.startswith(' '): |
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expr += line |
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elif expr: |
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expr_eval = evaluate(expr) |
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if expr_eval.has_key('enum'): |
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add_enum(expr_eval['enum']) |
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elif expr_eval.has_key('union'): |
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add_enum('%sKind' % expr_eval['union']) |
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exprs.append(expr_eval) |
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expr = line |
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else: |
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expr += line |
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if expr: |
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expr_eval = evaluate(expr) |
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if expr_eval.has_key('enum'): |
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add_enum(expr_eval['enum']) |
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elif expr_eval.has_key('union'): |
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add_enum('%sKind' % expr_eval['union']) |
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exprs.append(expr_eval) |
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return exprs |
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def parse_args(typeinfo): |
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for member in typeinfo: |
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argname = member |
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argentry = typeinfo[member] |
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optional = False |
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structured = False |
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if member.startswith('*'): |
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argname = member[1:] |
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optional = True |
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if isinstance(argentry, OrderedDict): |
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structured = True |
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yield (argname, argentry, optional, structured) |
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def de_camel_case(name): |
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new_name = '' |
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for ch in name: |
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if ch.isupper() and new_name: |
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new_name += '_' |
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if ch == '-': |
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new_name += '_' |
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else: |
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new_name += ch.lower() |
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return new_name |
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def camel_case(name): |
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new_name = '' |
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first = True |
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for ch in name: |
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if ch in ['_', '-']: |
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first = True |
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elif first: |
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new_name += ch.upper() |
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first = False |
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else: |
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new_name += ch.lower() |
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return new_name |
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def c_var(name): |
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return '_'.join(name.split('-')).lstrip("*") |
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def c_list_type(name): |
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return '%sList' % name |
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def type_name(name): |
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if type(name) == list: |
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return c_list_type(name[0]) |
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return name |
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enum_types = [] |
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def add_enum(name): |
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global enum_types |
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enum_types.append(name) |
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def is_enum(name): |
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global enum_types |
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return (name in enum_types) |
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def c_type(name): |
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if name == 'str': |
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return 'char *' |
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elif name == 'int': |
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return 'int64_t' |
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elif name == 'bool': |
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return 'bool' |
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elif name == 'number': |
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return 'double' |
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elif type(name) == list: |
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return '%s *' % c_list_type(name[0]) |
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elif is_enum(name): |
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return name |
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elif name == None or len(name) == 0: |
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return 'void' |
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elif name == name.upper(): |
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return '%sEvent *' % camel_case(name) |
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else: |
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return '%s *' % name |
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def genindent(count): |
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ret = "" |
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for i in range(count): |
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ret += " " |
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return ret |
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indent_level = 0 |
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def push_indent(indent_amount=4): |
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global indent_level |
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indent_level += indent_amount |
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def pop_indent(indent_amount=4): |
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global indent_level |
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indent_level -= indent_amount |
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def cgen(code, **kwds): |
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indent = genindent(indent_level) |
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lines = code.split('\n') |
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lines = map(lambda x: indent + x, lines) |
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return '\n'.join(lines) % kwds + '\n' |
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def mcgen(code, **kwds): |
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return cgen('\n'.join(code.split('\n')[1:-1]), **kwds) |
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def basename(filename): |
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return filename.split("/")[-1] |
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def guardname(filename): |
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return filename.replace("/", "_").replace("-", "_").split(".")[0].upper() |
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