567 lines
18 KiB
Python
567 lines
18 KiB
Python
#!/usr/bin/env python
|
|
# header.py - Generate C++ header files from IDL.
|
|
#
|
|
# This Source Code Form is subject to the terms of the Mozilla Public
|
|
# License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
|
|
"""Print a C++ header file for the IDL files specified on the command line"""
|
|
|
|
import sys
|
|
import os.path
|
|
import re
|
|
import xpidl
|
|
import itertools
|
|
import glob
|
|
|
|
printdoccomments = False
|
|
|
|
if printdoccomments:
|
|
def printComments(fd, clist, indent):
|
|
for c in clist:
|
|
fd.write("%s%s\n" % (indent, c))
|
|
else:
|
|
def printComments(fd, clist, indent):
|
|
pass
|
|
|
|
|
|
def firstCap(str):
|
|
return str[0].upper() + str[1:]
|
|
|
|
|
|
def attributeParamName(a):
|
|
return "a" + firstCap(a.name)
|
|
|
|
|
|
def attributeParamNames(a):
|
|
l = [attributeParamName(a)]
|
|
if a.implicit_jscontext:
|
|
l.insert(0, "cx")
|
|
return ", ".join(l)
|
|
|
|
|
|
def attributeNativeName(a, getter):
|
|
binaryname = a.binaryname is not None and a.binaryname or firstCap(a.name)
|
|
return "%s%s" % (getter and 'Get' or 'Set', binaryname)
|
|
|
|
|
|
def attributeReturnType(a, macro):
|
|
"""macro should be NS_IMETHOD or NS_IMETHODIMP"""
|
|
if a.nostdcall:
|
|
ret = macro == "NS_IMETHOD" and "virtual nsresult" or "nsresult"
|
|
else:
|
|
ret = macro
|
|
if a.must_use:
|
|
ret = "MOZ_MUST_USE " + ret
|
|
return ret
|
|
|
|
|
|
def attributeParamlist(a, getter):
|
|
l = ["%s%s" % (a.realtype.nativeType(getter and 'out' or 'in'),
|
|
attributeParamName(a))]
|
|
if a.implicit_jscontext:
|
|
l.insert(0, "JSContext* cx")
|
|
|
|
return ", ".join(l)
|
|
|
|
|
|
def attributeAsNative(a, getter, declType = 'NS_IMETHOD'):
|
|
deprecated = a.deprecated and "NS_DEPRECATED " or ""
|
|
params = {'deprecated': deprecated,
|
|
'returntype': attributeReturnType(a, declType),
|
|
'binaryname': attributeNativeName(a, getter),
|
|
'paramlist': attributeParamlist(a, getter)}
|
|
return "%(deprecated)s%(returntype)s %(binaryname)s(%(paramlist)s)" % params
|
|
|
|
|
|
def methodNativeName(m):
|
|
return m.binaryname is not None and m.binaryname or firstCap(m.name)
|
|
|
|
|
|
def methodReturnType(m, macro):
|
|
"""macro should be NS_IMETHOD or NS_IMETHODIMP"""
|
|
if m.nostdcall and m.notxpcom:
|
|
ret = "%s%s" % (macro == "NS_IMETHOD" and "virtual " or "",
|
|
m.realtype.nativeType('in').strip())
|
|
elif m.nostdcall:
|
|
ret = "%snsresult" % (macro == "NS_IMETHOD" and "virtual " or "")
|
|
elif m.notxpcom:
|
|
ret = "%s_(%s)" % (macro, m.realtype.nativeType('in').strip())
|
|
else:
|
|
ret = macro
|
|
if m.must_use:
|
|
ret = "MOZ_MUST_USE " + ret
|
|
return ret
|
|
|
|
|
|
def methodAsNative(m, declType = 'NS_IMETHOD'):
|
|
return "%s %s(%s)" % (methodReturnType(m, declType),
|
|
methodNativeName(m),
|
|
paramlistAsNative(m))
|
|
|
|
|
|
def paramlistAsNative(m, empty='void'):
|
|
l = [paramAsNative(p) for p in m.params]
|
|
|
|
if m.implicit_jscontext:
|
|
l.append("JSContext* cx")
|
|
|
|
if m.optional_argc:
|
|
l.append('uint8_t _argc')
|
|
|
|
if not m.notxpcom and m.realtype.name != 'void':
|
|
l.append(paramAsNative(xpidl.Param(paramtype='out',
|
|
type=None,
|
|
name='_retval',
|
|
attlist=[],
|
|
location=None,
|
|
realtype=m.realtype)))
|
|
|
|
# Set any optional out params to default to nullptr. Skip if we just added
|
|
# extra non-optional args to l.
|
|
if len(l) == len(m.params):
|
|
paramIter = len(m.params) - 1
|
|
while (paramIter >= 0 and m.params[paramIter].optional and
|
|
m.params[paramIter].paramtype == "out"):
|
|
t = m.params[paramIter].type
|
|
# Strings can't be optional, so this shouldn't happen, but let's make sure:
|
|
if t == "AString" or t == "ACString" or t == "DOMString" or t == "AUTF8String":
|
|
break
|
|
l[paramIter] += " = nullptr"
|
|
paramIter -= 1
|
|
|
|
if len(l) == 0:
|
|
return empty
|
|
|
|
return ", ".join(l)
|
|
|
|
|
|
def paramAsNative(p):
|
|
return "%s%s" % (p.nativeType(),
|
|
p.name)
|
|
|
|
|
|
def paramlistNames(m):
|
|
names = [p.name for p in m.params]
|
|
|
|
if m.implicit_jscontext:
|
|
names.append('cx')
|
|
|
|
if m.optional_argc:
|
|
names.append('_argc')
|
|
|
|
if not m.notxpcom and m.realtype.name != 'void':
|
|
names.append('_retval')
|
|
|
|
if len(names) == 0:
|
|
return ''
|
|
return ', '.join(names)
|
|
|
|
header = """/*
|
|
* DO NOT EDIT. THIS FILE IS GENERATED FROM %(filename)s
|
|
*/
|
|
|
|
#ifndef __gen_%(basename)s_h__
|
|
#define __gen_%(basename)s_h__
|
|
"""
|
|
|
|
include = """
|
|
#ifndef __gen_%(basename)s_h__
|
|
#include "%(basename)s.h"
|
|
#endif
|
|
"""
|
|
|
|
jsvalue_include = """
|
|
#include "js/Value.h"
|
|
"""
|
|
|
|
infallible_includes = """
|
|
#include "mozilla/Assertions.h"
|
|
#include "mozilla/DebugOnly.h"
|
|
"""
|
|
|
|
header_end = """/* For IDL files that don't want to include root IDL files. */
|
|
#ifndef NS_NO_VTABLE
|
|
#define NS_NO_VTABLE
|
|
#endif
|
|
"""
|
|
|
|
footer = """
|
|
#endif /* __gen_%(basename)s_h__ */
|
|
"""
|
|
|
|
forward_decl = """class %(name)s; /* forward declaration */
|
|
|
|
"""
|
|
|
|
|
|
def idl_basename(f):
|
|
"""returns the base name of a file with the last extension stripped"""
|
|
return os.path.basename(f).rpartition('.')[0]
|
|
|
|
|
|
def print_header(idl, fd, filename):
|
|
fd.write(header % {'filename': filename,
|
|
'basename': idl_basename(filename)})
|
|
|
|
foundinc = False
|
|
for inc in idl.includes():
|
|
if not foundinc:
|
|
foundinc = True
|
|
fd.write('\n')
|
|
fd.write(include % {'basename': idl_basename(inc.filename)})
|
|
|
|
if idl.needsJSTypes():
|
|
fd.write(jsvalue_include)
|
|
|
|
# Include some extra files if any attributes are infallible.
|
|
for iface in [p for p in idl.productions if p.kind == 'interface']:
|
|
for attr in [m for m in iface.members if isinstance(m, xpidl.Attribute)]:
|
|
if attr.infallible:
|
|
fd.write(infallible_includes)
|
|
break
|
|
|
|
fd.write('\n')
|
|
fd.write(header_end)
|
|
|
|
for p in idl.productions:
|
|
if p.kind == 'include':
|
|
continue
|
|
if p.kind == 'cdata':
|
|
fd.write(p.data)
|
|
continue
|
|
|
|
if p.kind == 'forward':
|
|
fd.write(forward_decl % {'name': p.name})
|
|
continue
|
|
if p.kind == 'interface':
|
|
write_interface(p, fd)
|
|
continue
|
|
if p.kind == 'typedef':
|
|
printComments(fd, p.doccomments, '')
|
|
fd.write("typedef %s %s;\n\n" % (p.realtype.nativeType('in'),
|
|
p.name))
|
|
|
|
fd.write(footer % {'basename': idl_basename(filename)})
|
|
|
|
iface_header = r"""
|
|
/* starting interface: %(name)s */
|
|
#define %(defname)s_IID_STR "%(iid)s"
|
|
|
|
#define %(defname)s_IID \
|
|
{0x%(m0)s, 0x%(m1)s, 0x%(m2)s, \
|
|
{ %(m3joined)s }}
|
|
|
|
"""
|
|
|
|
uuid_decoder = re.compile(r"""(?P<m0>[a-f0-9]{8})-
|
|
(?P<m1>[a-f0-9]{4})-
|
|
(?P<m2>[a-f0-9]{4})-
|
|
(?P<m3>[a-f0-9]{4})-
|
|
(?P<m4>[a-f0-9]{12})$""", re.X)
|
|
|
|
iface_prolog = """ {
|
|
public:
|
|
|
|
NS_DECLARE_STATIC_IID_ACCESSOR(%(defname)s_IID)
|
|
|
|
"""
|
|
|
|
iface_epilog = """};
|
|
|
|
NS_DEFINE_STATIC_IID_ACCESSOR(%(name)s, %(defname)s_IID)
|
|
|
|
/* Use this macro when declaring classes that implement this interface. */
|
|
#define NS_DECL_%(macroname)s """
|
|
|
|
iface_nonvirtual = """
|
|
|
|
/* Use this macro when declaring the members of this interface when the
|
|
class doesn't implement the interface. This is useful for forwarding. */
|
|
#define NS_DECL_NON_VIRTUAL_%(macroname)s """
|
|
|
|
iface_forward = """
|
|
|
|
/* Use this macro to declare functions that forward the behavior of this interface to another object. */
|
|
#define NS_FORWARD_%(macroname)s(_to) """
|
|
|
|
iface_forward_safe = """
|
|
|
|
/* Use this macro to declare functions that forward the behavior of this interface to another object in a safe way. */
|
|
#define NS_FORWARD_SAFE_%(macroname)s(_to) """
|
|
|
|
iface_template_prolog = """
|
|
|
|
#if 0
|
|
/* Use the code below as a template for the implementation class for this interface. */
|
|
|
|
/* Header file */
|
|
class %(implclass)s : public %(name)s
|
|
{
|
|
public:
|
|
NS_DECL_ISUPPORTS
|
|
NS_DECL_%(macroname)s
|
|
|
|
%(implclass)s();
|
|
|
|
private:
|
|
~%(implclass)s();
|
|
|
|
protected:
|
|
/* additional members */
|
|
};
|
|
|
|
/* Implementation file */
|
|
NS_IMPL_ISUPPORTS(%(implclass)s, %(name)s)
|
|
|
|
%(implclass)s::%(implclass)s()
|
|
{
|
|
/* member initializers and constructor code */
|
|
}
|
|
|
|
%(implclass)s::~%(implclass)s()
|
|
{
|
|
/* destructor code */
|
|
}
|
|
|
|
"""
|
|
|
|
example_tmpl = """%(returntype)s %(implclass)s::%(nativeName)s(%(paramList)s)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
"""
|
|
|
|
iface_template_epilog = """/* End of implementation class template. */
|
|
#endif
|
|
|
|
"""
|
|
|
|
attr_infallible_tmpl = """\
|
|
inline %(realtype)s%(nativename)s(%(args)s)
|
|
{
|
|
%(realtype)sresult;
|
|
mozilla::DebugOnly<nsresult> rv = %(nativename)s(%(argnames)s&result);
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv));
|
|
return result;
|
|
}
|
|
"""
|
|
|
|
|
|
def write_interface(iface, fd):
|
|
if iface.namemap is None:
|
|
raise Exception("Interface was not resolved.")
|
|
|
|
# Confirm that no names of methods will overload in this interface
|
|
names = set()
|
|
def record_name(name):
|
|
if name in names:
|
|
raise Exception("Unexpected overloaded virtual method %s in interface %s"
|
|
% (name, iface.name))
|
|
names.add(name)
|
|
for m in iface.members:
|
|
if type(m) == xpidl.Attribute:
|
|
record_name(attributeNativeName(m, getter=True))
|
|
if not m.readonly:
|
|
record_name(attributeNativeName(m, getter=False))
|
|
elif type(m) == xpidl.Method:
|
|
record_name(methodNativeName(m))
|
|
|
|
def write_const_decls(g):
|
|
fd.write(" enum {\n")
|
|
enums = []
|
|
for c in g:
|
|
printComments(fd, c.doccomments, ' ')
|
|
basetype = c.basetype
|
|
value = c.getValue()
|
|
enums.append(" %(name)s = %(value)s%(signed)s" % {
|
|
'name': c.name,
|
|
'value': value,
|
|
'signed': (not basetype.signed) and 'U' or ''})
|
|
fd.write(",\n".join(enums))
|
|
fd.write("\n };\n\n")
|
|
|
|
def write_method_decl(m):
|
|
printComments(fd, m.doccomments, ' ')
|
|
|
|
fd.write(" /* %s */\n" % m.toIDL())
|
|
fd.write(" %s = 0;\n\n" % methodAsNative(m))
|
|
|
|
def write_attr_decl(a):
|
|
printComments(fd, a.doccomments, ' ')
|
|
|
|
fd.write(" /* %s */\n" % a.toIDL())
|
|
|
|
fd.write(" %s = 0;\n" % attributeAsNative(a, True))
|
|
if a.infallible:
|
|
fd.write(attr_infallible_tmpl %
|
|
{'realtype': a.realtype.nativeType('in'),
|
|
'nativename': attributeNativeName(a, getter=True),
|
|
'args': '' if not a.implicit_jscontext else 'JSContext* cx',
|
|
'argnames': '' if not a.implicit_jscontext else 'cx, '})
|
|
|
|
if not a.readonly:
|
|
fd.write(" %s = 0;\n" % attributeAsNative(a, False))
|
|
fd.write("\n")
|
|
|
|
defname = iface.name.upper()
|
|
if iface.name[0:2] == 'ns':
|
|
defname = 'NS_' + defname[2:]
|
|
|
|
names = uuid_decoder.match(iface.attributes.uuid).groupdict()
|
|
m3str = names['m3'] + names['m4']
|
|
names['m3joined'] = ", ".join(["0x%s" % m3str[i:i+2] for i in xrange(0, 16, 2)])
|
|
|
|
if iface.name[2] == 'I':
|
|
implclass = iface.name[:2] + iface.name[3:]
|
|
else:
|
|
implclass = '_MYCLASS_'
|
|
|
|
names.update({'defname': defname,
|
|
'macroname': iface.name.upper(),
|
|
'name': iface.name,
|
|
'iid': iface.attributes.uuid,
|
|
'implclass': implclass})
|
|
|
|
fd.write(iface_header % names)
|
|
|
|
printComments(fd, iface.doccomments, '')
|
|
|
|
fd.write("class ")
|
|
foundcdata = False
|
|
for m in iface.members:
|
|
if isinstance(m, xpidl.CDATA):
|
|
foundcdata = True
|
|
|
|
if not foundcdata:
|
|
fd.write("NS_NO_VTABLE ")
|
|
|
|
if iface.attributes.deprecated:
|
|
fd.write("MOZ_DEPRECATED ")
|
|
fd.write(iface.name)
|
|
if iface.base:
|
|
fd.write(" : public %s" % iface.base)
|
|
fd.write(iface_prolog % names)
|
|
|
|
for key, group in itertools.groupby(iface.members, key=type):
|
|
if key == xpidl.ConstMember:
|
|
write_const_decls(group) # iterator of all the consts
|
|
else:
|
|
for member in group:
|
|
if key == xpidl.Attribute:
|
|
write_attr_decl(member)
|
|
elif key == xpidl.Method:
|
|
write_method_decl(member)
|
|
elif key == xpidl.CDATA:
|
|
fd.write(" %s" % member.data)
|
|
else:
|
|
raise Exception("Unexpected interface member: %s" % member)
|
|
|
|
fd.write(iface_epilog % names)
|
|
|
|
def writeDeclaration(fd, iface, virtual):
|
|
declType = "NS_IMETHOD" if virtual else "NS_METHOD"
|
|
suffix = " override" if virtual else ""
|
|
for member in iface.members:
|
|
if isinstance(member, xpidl.Attribute):
|
|
if member.infallible:
|
|
fd.write("\\\n using %s::%s; " % (iface.name, attributeNativeName(member, True)))
|
|
fd.write("\\\n %s%s; " % (attributeAsNative(member, True, declType), suffix))
|
|
if not member.readonly:
|
|
fd.write("\\\n %s%s; " % (attributeAsNative(member, False, declType), suffix))
|
|
elif isinstance(member, xpidl.Method):
|
|
fd.write("\\\n %s%s; " % (methodAsNative(member, declType), suffix))
|
|
if len(iface.members) == 0:
|
|
fd.write('\\\n /* no methods! */')
|
|
elif not member.kind in ('attribute', 'method'):
|
|
fd.write('\\')
|
|
|
|
writeDeclaration(fd, iface, True);
|
|
fd.write(iface_nonvirtual % names)
|
|
writeDeclaration(fd, iface, False);
|
|
fd.write(iface_forward % names)
|
|
|
|
def emitTemplate(forward_infallible, tmpl, tmpl_notxpcom=None):
|
|
if tmpl_notxpcom is None:
|
|
tmpl_notxpcom = tmpl
|
|
for member in iface.members:
|
|
if isinstance(member, xpidl.Attribute):
|
|
if forward_infallible and member.infallible:
|
|
fd.write("\\\n using %s::%s; " % (iface.name, attributeNativeName(member, True)))
|
|
fd.write(tmpl % {'asNative': attributeAsNative(member, True),
|
|
'nativeName': attributeNativeName(member, True),
|
|
'paramList': attributeParamNames(member)})
|
|
if not member.readonly:
|
|
fd.write(tmpl % {'asNative': attributeAsNative(member, False),
|
|
'nativeName': attributeNativeName(member, False),
|
|
'paramList': attributeParamNames(member)})
|
|
elif isinstance(member, xpidl.Method):
|
|
if member.notxpcom:
|
|
fd.write(tmpl_notxpcom % {'asNative': methodAsNative(member),
|
|
'nativeName': methodNativeName(member),
|
|
'paramList': paramlistNames(member)})
|
|
else:
|
|
fd.write(tmpl % {'asNative': methodAsNative(member),
|
|
'nativeName': methodNativeName(member),
|
|
'paramList': paramlistNames(member)})
|
|
if len(iface.members) == 0:
|
|
fd.write('\\\n /* no methods! */')
|
|
elif not member.kind in ('attribute', 'method'):
|
|
fd.write('\\')
|
|
|
|
emitTemplate(True,
|
|
"\\\n %(asNative)s override { return _to %(nativeName)s(%(paramList)s); } ")
|
|
|
|
fd.write(iface_forward_safe % names)
|
|
|
|
# Don't try to safely forward notxpcom functions, because we have no
|
|
# sensible default error return. Instead, the caller will have to
|
|
# implement them.
|
|
emitTemplate(False,
|
|
"\\\n %(asNative)s override { return !_to ? NS_ERROR_NULL_POINTER : _to->%(nativeName)s(%(paramList)s); } ",
|
|
"\\\n %(asNative)s override; ")
|
|
|
|
fd.write(iface_template_prolog % names)
|
|
|
|
for member in iface.members:
|
|
if isinstance(member, xpidl.ConstMember) or isinstance(member, xpidl.CDATA):
|
|
continue
|
|
fd.write("/* %s */\n" % member.toIDL())
|
|
if isinstance(member, xpidl.Attribute):
|
|
fd.write(example_tmpl % {'implclass': implclass,
|
|
'returntype': attributeReturnType(member, 'NS_IMETHODIMP'),
|
|
'nativeName': attributeNativeName(member, True),
|
|
'paramList': attributeParamlist(member, True)})
|
|
if not member.readonly:
|
|
fd.write(example_tmpl % {'implclass': implclass,
|
|
'returntype': attributeReturnType(member, 'NS_IMETHODIMP'),
|
|
'nativeName': attributeNativeName(member, False),
|
|
'paramList': attributeParamlist(member, False)})
|
|
elif isinstance(member, xpidl.Method):
|
|
fd.write(example_tmpl % {'implclass': implclass,
|
|
'returntype': methodReturnType(member, 'NS_IMETHODIMP'),
|
|
'nativeName': methodNativeName(member),
|
|
'paramList': paramlistAsNative(member, empty='')})
|
|
fd.write('\n')
|
|
|
|
fd.write(iface_template_epilog)
|
|
|
|
|
|
def main(outputfile):
|
|
cachedir = '.'
|
|
if not os.path.isdir(cachedir):
|
|
os.mkdir(cachedir)
|
|
sys.path.append(cachedir)
|
|
|
|
# Delete the lex/yacc files. Ply is too stupid to regenerate them
|
|
# properly
|
|
for fileglobs in [os.path.join(cachedir, f) for f in ["xpidllex.py*", "xpidlyacc.py*"]]:
|
|
for filename in glob.glob(fileglobs):
|
|
os.remove(filename)
|
|
|
|
# Instantiate the parser.
|
|
p = xpidl.IDLParser(outputdir=cachedir)
|
|
|
|
if __name__ == '__main__':
|
|
main(None)
|