TCG: Use gen_opc_icount from context instead of global variable.
[qemu/agraf.git] / scripts / qapi.py
blobafc5f32aebe4c522a7d6269787f9a98d93da830f
2 # QAPI helper library
4 # Copyright IBM, Corp. 2011
6 # Authors:
7 # Anthony Liguori <aliguori@us.ibm.com>
9 # This work is licensed under the terms of the GNU GPLv2.
10 # See the COPYING.LIB file in the top-level directory.
12 from ordereddict import OrderedDict
14 def tokenize(data):
15 while len(data):
16 ch = data[0]
17 data = data[1:]
18 if ch in ['{', '}', ':', ',', '[', ']']:
19 yield ch
20 elif ch in ' \n':
21 None
22 elif ch == "'":
23 string = ''
24 esc = False
25 while True:
26 if (data == ''):
27 raise Exception("Mismatched quotes")
28 ch = data[0]
29 data = data[1:]
30 if esc:
31 string += ch
32 esc = False
33 elif ch == "\\":
34 esc = True
35 elif ch == "'":
36 break
37 else:
38 string += ch
39 yield string
41 def parse(tokens):
42 if tokens[0] == '{':
43 ret = OrderedDict()
44 tokens = tokens[1:]
45 while tokens[0] != '}':
46 key = tokens[0]
47 tokens = tokens[1:]
49 tokens = tokens[1:] # :
51 value, tokens = parse(tokens)
53 if tokens[0] == ',':
54 tokens = tokens[1:]
56 ret[key] = value
57 tokens = tokens[1:]
58 return ret, tokens
59 elif tokens[0] == '[':
60 ret = []
61 tokens = tokens[1:]
62 while tokens[0] != ']':
63 value, tokens = parse(tokens)
64 if tokens[0] == ',':
65 tokens = tokens[1:]
66 ret.append(value)
67 tokens = tokens[1:]
68 return ret, tokens
69 else:
70 return tokens[0], tokens[1:]
72 def evaluate(string):
73 return parse(map(lambda x: x, tokenize(string)))[0]
75 def parse_schema(fp):
76 exprs = []
77 expr = ''
78 expr_eval = None
80 for line in fp:
81 if line.startswith('#') or line == '\n':
82 continue
84 if line.startswith(' '):
85 expr += line
86 elif expr:
87 expr_eval = evaluate(expr)
88 if expr_eval.has_key('enum'):
89 add_enum(expr_eval['enum'])
90 elif expr_eval.has_key('union'):
91 add_enum('%sKind' % expr_eval['union'])
92 exprs.append(expr_eval)
93 expr = line
94 else:
95 expr += line
97 if expr:
98 expr_eval = evaluate(expr)
99 if expr_eval.has_key('enum'):
100 add_enum(expr_eval['enum'])
101 elif expr_eval.has_key('union'):
102 add_enum('%sKind' % expr_eval['union'])
103 exprs.append(expr_eval)
105 return exprs
107 def parse_args(typeinfo):
108 for member in typeinfo:
109 argname = member
110 argentry = typeinfo[member]
111 optional = False
112 structured = False
113 if member.startswith('*'):
114 argname = member[1:]
115 optional = True
116 if isinstance(argentry, OrderedDict):
117 structured = True
118 yield (argname, argentry, optional, structured)
120 def de_camel_case(name):
121 new_name = ''
122 for ch in name:
123 if ch.isupper() and new_name:
124 new_name += '_'
125 if ch == '-':
126 new_name += '_'
127 else:
128 new_name += ch.lower()
129 return new_name
131 def camel_case(name):
132 new_name = ''
133 first = True
134 for ch in name:
135 if ch in ['_', '-']:
136 first = True
137 elif first:
138 new_name += ch.upper()
139 first = False
140 else:
141 new_name += ch.lower()
142 return new_name
144 def c_var(name, protect=True):
145 # ANSI X3J11/88-090, 3.1.1
146 c89_words = set(['auto', 'break', 'case', 'char', 'const', 'continue',
147 'default', 'do', 'double', 'else', 'enum', 'extern', 'float',
148 'for', 'goto', 'if', 'int', 'long', 'register', 'return',
149 'short', 'signed', 'sizeof', 'static', 'struct', 'switch',
150 'typedef', 'union', 'unsigned', 'void', 'volatile', 'while'])
151 # ISO/IEC 9899:1999, 6.4.1
152 c99_words = set(['inline', 'restrict', '_Bool', '_Complex', '_Imaginary'])
153 # ISO/IEC 9899:2011, 6.4.1
154 c11_words = set(['_Alignas', '_Alignof', '_Atomic', '_Generic', '_Noreturn',
155 '_Static_assert', '_Thread_local'])
156 # GCC http://gcc.gnu.org/onlinedocs/gcc-4.7.1/gcc/C-Extensions.html
157 # excluding _.*
158 gcc_words = set(['asm', 'typeof'])
159 # namespace pollution:
160 polluted_words = set(['unix'])
161 if protect and (name in c89_words | c99_words | c11_words | gcc_words | polluted_words):
162 return "q_" + name
163 return name.replace('-', '_').lstrip("*")
165 def c_fun(name, protect=True):
166 return c_var(name, protect).replace('.', '_')
168 def c_list_type(name):
169 return '%sList' % name
171 def type_name(name):
172 if type(name) == list:
173 return c_list_type(name[0])
174 return name
176 enum_types = []
178 def add_enum(name):
179 global enum_types
180 enum_types.append(name)
182 def is_enum(name):
183 global enum_types
184 return (name in enum_types)
186 def c_type(name):
187 if name == 'str':
188 return 'char *'
189 elif name == 'int':
190 return 'int64_t'
191 elif (name == 'int8' or name == 'int16' or name == 'int32' or
192 name == 'int64' or name == 'uint8' or name == 'uint16' or
193 name == 'uint32' or name == 'uint64'):
194 return name + '_t'
195 elif name == 'size':
196 return 'uint64_t'
197 elif name == 'bool':
198 return 'bool'
199 elif name == 'number':
200 return 'double'
201 elif type(name) == list:
202 return '%s *' % c_list_type(name[0])
203 elif is_enum(name):
204 return name
205 elif name == None or len(name) == 0:
206 return 'void'
207 elif name == name.upper():
208 return '%sEvent *' % camel_case(name)
209 else:
210 return '%s *' % name
212 def genindent(count):
213 ret = ""
214 for i in range(count):
215 ret += " "
216 return ret
218 indent_level = 0
220 def push_indent(indent_amount=4):
221 global indent_level
222 indent_level += indent_amount
224 def pop_indent(indent_amount=4):
225 global indent_level
226 indent_level -= indent_amount
228 def cgen(code, **kwds):
229 indent = genindent(indent_level)
230 lines = code.split('\n')
231 lines = map(lambda x: indent + x, lines)
232 return '\n'.join(lines) % kwds + '\n'
234 def mcgen(code, **kwds):
235 return cgen('\n'.join(code.split('\n')[1:-1]), **kwds)
237 def basename(filename):
238 return filename.split("/")[-1]
240 def guardname(filename):
241 guard = basename(filename).rsplit(".", 1)[0]
242 for substr in [".", " ", "-"]:
243 guard = guard.replace(substr, "_")
244 return guard.upper() + '_H'