Author: mozbugbox <[email protected]>
Branch: define-integer-constant
Changeset: r1490:c5e6470d1dc0
Date: 2014-04-02 17:20 +0800
http://bitbucket.org/cffi/cffi/changeset/c5e6470d1dc0/
Log: Handle define constant by "#define DOT 0x1FF"
diff --git a/cffi/api.py b/cffi/api.py
--- a/cffi/api.py
+++ b/cffi/api.py
@@ -443,6 +443,10 @@
for enumname, enumval in zip(tp.enumerators, tp.enumvalues):
if enumname not in library.__dict__:
library.__dict__[enumname] = enumval
+ for key, val in ffi._parser._int_constants.items():
+ if key not in library.__dict__:
+ library.__dict__[key] = val
+
copied_enums.append(True)
if name in library.__dict__:
return
diff --git a/cffi/cparser.py b/cffi/cparser.py
--- a/cffi/cparser.py
+++ b/cffi/cparser.py
@@ -24,6 +24,7 @@
_r_partial_array = re.compile(r"\[\s*\.\.\.\s*\]")
_r_words = re.compile(r"\w+|\S")
_parser_cache = None
+_r_int_literal = re.compile(r"^0?x?[0-9a-f]+u?l?$", re.IGNORECASE)
def _get_parser():
global _parser_cache
@@ -170,12 +171,7 @@
def _internal_parse(self, csource):
ast, macros, csource = self._parse(csource)
# add the macros
- for key, value in macros.items():
- value = value.strip()
- if value != '...':
- raise api.CDefError('only supports the syntax "#define '
- '%s ..." for now (literally)' % key)
- self._declare('macro ' + key, value)
+ self._process_macros(macros)
# find the first "__dotdotdot__" and use that as a separator
# between the repeated typedefs and the real csource
iterator = iter(ast.ext)
@@ -211,6 +207,24 @@
e.args = (e.args[0] + "\n *** Err: %s" % msg,)
raise
+ def _process_macros(self, macros):
+ for key, value in macros.items():
+ value = value.strip()
+ match = _r_int_literal.search(value)
+ if match is not None:
+ pyvalue = int(match.group(0).rstrip("ULul"), 0)
+ if key not in self._int_constants:
+ self._int_constants[key] = pyvalue
+ else:
+ raise api.FFIError(
+ "multiple declarations of constant %s" % (key,))
+ elif value == '...':
+ self._declare('macro ' + key, value)
+ else:
+ raise api.CDefError('only supports the syntax "#define '
+ '%s ..." (literally) or "#define '
+ '%s 0x1FF" for now' % (key, key))
+
def _parse_decl(self, decl):
node = decl.type
if isinstance(node, pycparser.c_ast.FuncDecl):
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