| # |
| # QAPI helper library |
| # |
| # Copyright IBM, Corp. 2011 |
| # Copyright (c) 2013 Red Hat Inc. |
| # |
| # Authors: |
| # Anthony Liguori <aliguori@us.ibm.com> |
| # Markus Armbruster <armbru@redhat.com> |
| # |
| # This work is licensed under the terms of the GNU GPLv2. |
| # See the COPYING.LIB file in the top-level directory. |
| |
| from ordereddict import OrderedDict |
| import sys |
| |
| builtin_types = [ |
| 'str', 'int', 'number', 'bool', |
| 'int8', 'int16', 'int32', 'int64', |
| 'uint8', 'uint16', 'uint32', 'uint64' |
| ] |
| |
| builtin_type_qtypes = { |
| 'str': 'QTYPE_QSTRING', |
| 'int': 'QTYPE_QINT', |
| 'number': 'QTYPE_QFLOAT', |
| 'bool': 'QTYPE_QBOOL', |
| 'int8': 'QTYPE_QINT', |
| 'int16': 'QTYPE_QINT', |
| 'int32': 'QTYPE_QINT', |
| 'int64': 'QTYPE_QINT', |
| 'uint8': 'QTYPE_QINT', |
| 'uint16': 'QTYPE_QINT', |
| 'uint32': 'QTYPE_QINT', |
| 'uint64': 'QTYPE_QINT', |
| } |
| |
| class QAPISchemaError(Exception): |
| def __init__(self, schema, msg): |
| self.fp = schema.fp |
| self.msg = msg |
| self.line = self.col = 1 |
| for ch in schema.src[0:schema.pos]: |
| if ch == '\n': |
| self.line += 1 |
| self.col = 1 |
| elif ch == '\t': |
| self.col = (self.col + 7) % 8 + 1 |
| else: |
| self.col += 1 |
| |
| def __str__(self): |
| return "%s:%s:%s: %s" % (self.fp.name, self.line, self.col, self.msg) |
| |
| class QAPISchema: |
| |
| def __init__(self, fp): |
| self.fp = fp |
| self.src = fp.read() |
| if self.src == '' or self.src[-1] != '\n': |
| self.src += '\n' |
| self.cursor = 0 |
| self.exprs = [] |
| self.accept() |
| |
| while self.tok != None: |
| self.exprs.append(self.get_expr(False)) |
| |
| def accept(self): |
| while True: |
| self.tok = self.src[self.cursor] |
| self.pos = self.cursor |
| self.cursor += 1 |
| self.val = None |
| |
| if self.tok == '#': |
| self.cursor = self.src.find('\n', self.cursor) |
| elif self.tok in ['{', '}', ':', ',', '[', ']']: |
| return |
| elif self.tok == "'": |
| string = '' |
| esc = False |
| while True: |
| ch = self.src[self.cursor] |
| self.cursor += 1 |
| if ch == '\n': |
| raise QAPISchemaError(self, |
| 'Missing terminating "\'"') |
| if esc: |
| string += ch |
| esc = False |
| elif ch == "\\": |
| esc = True |
| elif ch == "'": |
| self.val = string |
| return |
| else: |
| string += ch |
| elif self.tok == '\n': |
| if self.cursor == len(self.src): |
| self.tok = None |
| return |
| elif not self.tok.isspace(): |
| raise QAPISchemaError(self, 'Stray "%s"' % self.tok) |
| |
| def get_members(self): |
| expr = OrderedDict() |
| if self.tok == '}': |
| self.accept() |
| return expr |
| if self.tok != "'": |
| raise QAPISchemaError(self, 'Expected string or "}"') |
| while True: |
| key = self.val |
| self.accept() |
| if self.tok != ':': |
| raise QAPISchemaError(self, 'Expected ":"') |
| self.accept() |
| expr[key] = self.get_expr(True) |
| if self.tok == '}': |
| self.accept() |
| return expr |
| if self.tok != ',': |
| raise QAPISchemaError(self, 'Expected "," or "}"') |
| self.accept() |
| if self.tok != "'": |
| raise QAPISchemaError(self, 'Expected string') |
| |
| def get_values(self): |
| expr = [] |
| if self.tok == ']': |
| self.accept() |
| return expr |
| if not self.tok in [ '{', '[', "'" ]: |
| raise QAPISchemaError(self, 'Expected "{", "[", "]" or string') |
| while True: |
| expr.append(self.get_expr(True)) |
| if self.tok == ']': |
| self.accept() |
| return expr |
| if self.tok != ',': |
| raise QAPISchemaError(self, 'Expected "," or "]"') |
| self.accept() |
| |
| def get_expr(self, nested): |
| if self.tok != '{' and not nested: |
| raise QAPISchemaError(self, 'Expected "{"') |
| if self.tok == '{': |
| self.accept() |
| expr = self.get_members() |
| elif self.tok == '[': |
| self.accept() |
| expr = self.get_values() |
| elif self.tok == "'": |
| expr = self.val |
| self.accept() |
| else: |
| raise QAPISchemaError(self, 'Expected "{", "[" or string') |
| return expr |
| |
| def parse_schema(fp): |
| try: |
| schema = QAPISchema(fp) |
| except QAPISchemaError, e: |
| print >>sys.stderr, e |
| exit(1) |
| |
| exprs = [] |
| |
| for expr in schema.exprs: |
| if expr.has_key('enum'): |
| add_enum(expr['enum']) |
| elif expr.has_key('union'): |
| add_union(expr) |
| add_enum('%sKind' % expr['union']) |
| elif expr.has_key('type'): |
| add_struct(expr) |
| exprs.append(expr) |
| |
| return exprs |
| |
| def parse_args(typeinfo): |
| if isinstance(typeinfo, basestring): |
| struct = find_struct(typeinfo) |
| assert struct != None |
| typeinfo = struct['data'] |
| |
| for member in typeinfo: |
| argname = member |
| argentry = typeinfo[member] |
| optional = False |
| structured = False |
| if member.startswith('*'): |
| argname = member[1:] |
| optional = True |
| if isinstance(argentry, OrderedDict): |
| structured = True |
| yield (argname, argentry, optional, structured) |
| |
| def de_camel_case(name): |
| new_name = '' |
| for ch in name: |
| if ch.isupper() and new_name: |
| new_name += '_' |
| if ch == '-': |
| new_name += '_' |
| else: |
| new_name += ch.lower() |
| return new_name |
| |
| def camel_case(name): |
| new_name = '' |
| first = True |
| for ch in name: |
| if ch in ['_', '-']: |
| first = True |
| elif first: |
| new_name += ch.upper() |
| first = False |
| else: |
| new_name += ch.lower() |
| return new_name |
| |
| def c_var(name, protect=True): |
| # ANSI X3J11/88-090, 3.1.1 |
| c89_words = set(['auto', 'break', 'case', 'char', 'const', 'continue', |
| 'default', 'do', 'double', 'else', 'enum', 'extern', 'float', |
| 'for', 'goto', 'if', 'int', 'long', 'register', 'return', |
| 'short', 'signed', 'sizeof', 'static', 'struct', 'switch', |
| 'typedef', 'union', 'unsigned', 'void', 'volatile', 'while']) |
| # ISO/IEC 9899:1999, 6.4.1 |
| c99_words = set(['inline', 'restrict', '_Bool', '_Complex', '_Imaginary']) |
| # ISO/IEC 9899:2011, 6.4.1 |
| c11_words = set(['_Alignas', '_Alignof', '_Atomic', '_Generic', '_Noreturn', |
| '_Static_assert', '_Thread_local']) |
| # GCC http://gcc.gnu.org/onlinedocs/gcc-4.7.1/gcc/C-Extensions.html |
| # excluding _.* |
| gcc_words = set(['asm', 'typeof']) |
| # C++ ISO/IEC 14882:2003 2.11 |
| cpp_words = set(['bool', 'catch', 'class', 'const_cast', 'delete', |
| 'dynamic_cast', 'explicit', 'false', 'friend', 'mutable', |
| 'namespace', 'new', 'operator', 'private', 'protected', |
| 'public', 'reinterpret_cast', 'static_cast', 'template', |
| 'this', 'throw', 'true', 'try', 'typeid', 'typename', |
| 'using', 'virtual', 'wchar_t', |
| # alternative representations |
| 'and', 'and_eq', 'bitand', 'bitor', 'compl', 'not', |
| 'not_eq', 'or', 'or_eq', 'xor', 'xor_eq']) |
| # namespace pollution: |
| polluted_words = set(['unix']) |
| if protect and (name in c89_words | c99_words | c11_words | gcc_words | cpp_words | polluted_words): |
| return "q_" + name |
| return name.replace('-', '_').lstrip("*") |
| |
| def c_fun(name, protect=True): |
| return c_var(name, protect).replace('.', '_') |
| |
| def c_list_type(name): |
| return '%sList' % name |
| |
| def type_name(name): |
| if type(name) == list: |
| return c_list_type(name[0]) |
| return name |
| |
| enum_types = [] |
| struct_types = [] |
| union_types = [] |
| |
| def add_struct(definition): |
| global struct_types |
| struct_types.append(definition) |
| |
| def find_struct(name): |
| global struct_types |
| for struct in struct_types: |
| if struct['type'] == name: |
| return struct |
| return None |
| |
| def add_union(definition): |
| global union_types |
| union_types.append(definition) |
| |
| def find_union(name): |
| global union_types |
| for union in union_types: |
| if union['union'] == name: |
| return union |
| return None |
| |
| def add_enum(name): |
| global enum_types |
| enum_types.append(name) |
| |
| def is_enum(name): |
| global enum_types |
| return (name in enum_types) |
| |
| def c_type(name): |
| if name == 'str': |
| return 'char *' |
| elif name == 'int': |
| return 'int64_t' |
| elif (name == 'int8' or name == 'int16' or name == 'int32' or |
| name == 'int64' or name == 'uint8' or name == 'uint16' or |
| name == 'uint32' or name == 'uint64'): |
| return name + '_t' |
| elif name == 'size': |
| return 'uint64_t' |
| elif name == 'bool': |
| return 'bool' |
| elif name == 'number': |
| return 'double' |
| elif type(name) == list: |
| return '%s *' % c_list_type(name[0]) |
| elif is_enum(name): |
| return name |
| elif name == None or len(name) == 0: |
| return 'void' |
| elif name == name.upper(): |
| return '%sEvent *' % camel_case(name) |
| else: |
| return '%s *' % name |
| |
| def genindent(count): |
| ret = "" |
| for i in range(count): |
| ret += " " |
| return ret |
| |
| indent_level = 0 |
| |
| def push_indent(indent_amount=4): |
| global indent_level |
| indent_level += indent_amount |
| |
| def pop_indent(indent_amount=4): |
| global indent_level |
| indent_level -= indent_amount |
| |
| def cgen(code, **kwds): |
| indent = genindent(indent_level) |
| lines = code.split('\n') |
| lines = map(lambda x: indent + x, lines) |
| return '\n'.join(lines) % kwds + '\n' |
| |
| def mcgen(code, **kwds): |
| return cgen('\n'.join(code.split('\n')[1:-1]), **kwds) |
| |
| def basename(filename): |
| return filename.split("/")[-1] |
| |
| def guardname(filename): |
| guard = basename(filename).rsplit(".", 1)[0] |
| for substr in [".", " ", "-"]: |
| guard = guard.replace(substr, "_") |
| return guard.upper() + '_H' |
| |
| def guardstart(name): |
| return mcgen(''' |
| |
| #ifndef %(name)s |
| #define %(name)s |
| |
| ''', |
| name=guardname(name)) |
| |
| def guardend(name): |
| return mcgen(''' |
| |
| #endif /* %(name)s */ |
| |
| ''', |
| name=guardname(name)) |
