# 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
-def tokenize(data):
- while len(data):
- if data[0] in ['{', '}', ':', ',', '[', ']']:
- yield data[0]
- data = data[1:]
- elif data[0] in ' \n':
- data = data[1:]
- elif data[0] == "'":
- data = data[1:]
- string = ''
- while data[0] != "'":
- string += data[0]
- data = data[1:]
- data = data[1:]
- yield string
-
-def parse(tokens):
- if tokens[0] == '{':
- ret = OrderedDict()
- tokens = tokens[1:]
- while tokens[0] != '}':
- key = tokens[0]
- tokens = tokens[1:]
-
- tokens = tokens[1:] # :
-
- value, tokens = parse(tokens)
-
- if tokens[0] == ',':
- tokens = tokens[1:]
-
- ret[key] = value
- tokens = tokens[1:]
- return ret, tokens
- elif tokens[0] == '[':
- ret = []
- tokens = tokens[1:]
- while tokens[0] != ']':
- value, tokens = parse(tokens)
- if tokens[0] == ',':
- tokens = tokens[1:]
- ret.append(value)
- tokens = tokens[1:]
- return ret, tokens
- else:
- return tokens[0], tokens[1:]
+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 evaluate(string):
- return parse(map(lambda x: x, tokenize(string)))[0]
+ 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 = []
- expr = ''
- expr_eval = None
-
- for line in fp:
- if line.startswith('#') or line == '\n':
- continue
-
- if line.startswith(' '):
- expr += line
- elif expr:
- expr_eval = evaluate(expr)
- if expr_eval.has_key('enum'):
- add_enum(expr_eval['enum'])
- elif expr_eval.has_key('union'):
- add_enum('%sKind' % expr_eval['union'])
- exprs.append(expr_eval)
- expr = line
- else:
- expr += line
- if expr:
- expr_eval = evaluate(expr)
- if expr_eval.has_key('enum'):
- add_enum(expr_eval['enum'])
- elif expr_eval.has_key('union'):
- add_enum('%sKind' % expr_eval['union'])
- exprs.append(expr_eval)
+ 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]
new_name += ch.lower()
return new_name
-def c_var(name):
- return '_'.join(name.split('-')).lstrip("*")
+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
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
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 filename.split("/")[-1]
def guardname(filename):
- if filename.startswith('./'):
- filename = filename[2:]
- return filename.replace("/", "_").replace("-", "_").split(".")[0].upper() + '_H'
+ 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))
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