def writeResultDecl(f, member, varname):
type = member.realtype
if isVoidType(type):
return # nothing to declare
t = xpidl.unaliasType(type)
if t.kind == 'builtin':
if not t.nativename.endswith('*'):
if type.kind == 'typedef':
typeName = type.name # use it
else:
typeName = t.nativename
f.write(" %s %s;\n" % (typeName, varname))
return
elif t.kind == 'native':
name = xpidl.getBuiltinOrNativeTypeName(t)
if name in ('[domstring]', '[astring]'):
f.write(" nsString %s;\n" % varname)
return
elif name == '[jsval]':
return # nothing to declare; see special case in outParamForm
elif t.kind in ('interface', 'forward'):
if member.kind == 'method' and member.notxpcom:
f.write(" %s *%s;\n" % (type.name, varname))
else:
f.write(" nsCOMPtr<%s> %s;\n" % (type.name, varname))
return
warn("Unable to declare result of type %s" % type.name)
f.write(" !; // TODO - Declare out parameter `%s`.\n" % varname)
def writeResultConv(f, type, interfaceResultTemplate, jsvalPtr, jsvalRef):
""" Emit code to convert the C++ variable `result` to a jsval.
The emitted code contains a return statement; it returns JS_TRUE on
success, JS_FALSE on error.
"""
# From NativeData2JS.
typeName = xpidl.getBuiltinOrNativeTypeName(type)
if typeName is not None:
template = resultConvTemplates.get(typeName)
elif isInterfaceType(type):
if isVariantType(type):
template = " return xpc_qsVariantToJsval(lccx, result, ${jsvalPtr});\n"
else:
template = (" if (!result) {\n"
" *${jsvalPtr} = JSVAL_NULL;\n"
" return JS_TRUE;\n"
" }\n")
template += interfaceResultTemplate
if template is not None:
values = {'jsvalRef': jsvalRef,
'jsvalPtr': jsvalPtr,
'typeName': type.name}
f.write(string.Template(template).substitute(values))
return
# else fall through; this type isn't supported yet
warn("Unable to convert result of type %s" % type.name)
f.write(" !; // TODO - Convert `result` to jsval, store in `%s`.\n"
% jsvalRef)
f.write(" return xpc_qsThrow(cx, NS_ERROR_UNEXPECTED); // FIXME\n")
def writeResultConv(f, type, interfaceResultTemplate, jsvalPtr, jsvalRef):
""" Emit code to convert the C++ variable `result` to a jsval.
The emitted code contains a return statement; it returns JS_TRUE on
success, JS_FALSE on error.
"""
# From NativeData2JS.
typeName = xpidl.getBuiltinOrNativeTypeName(type)
if typeName is not None:
template = resultConvTemplates.get(typeName)
elif isInterfaceType(type):
if isVariantType(type):
template = " return xpc_qsVariantToJsval(lccx, result, ${jsvalPtr});\n"
else:
template = (" if (!result) {\n"
" *${jsvalPtr} = JSVAL_NULL;\n"
" return JS_TRUE;\n"
" }\n")
template += interfaceResultTemplate
if template is not None:
values = {
'jsvalRef': jsvalRef,
'jsvalPtr': jsvalPtr,
'typeName': type.name
}
f.write(string.Template(template).substitute(values))
return
# else fall through; this type isn't supported yet
warn("Unable to convert result of type %s" % type.name)
f.write(" !; // TODO - Convert `result` to jsval, store in `%s`.\n" %
jsvalRef)
f.write(" return xpc_qsThrow(cx, NS_ERROR_UNEXPECTED); // FIXME\n")
def writeResultDecl(f, member, varname):
type = member.realtype
if isVoidType(type):
return # nothing to declare
t = xpidl.unaliasType(type)
if t.kind == 'builtin':
if not t.nativename.endswith('*'):
if type.kind == 'typedef':
typeName = type.name # use it
else:
typeName = t.nativename
f.write(" %s %s;\n" % (typeName, varname))
return
elif t.kind == 'native':
name = xpidl.getBuiltinOrNativeTypeName(t)
if name in ('[domstring]', '[astring]'):
f.write(" nsString %s;\n" % varname)
return
elif name == '[jsval]':
return # nothing to declare; see special case in outParamForm
elif t.kind in ('interface', 'forward'):
if member.kind == 'method' and member.notxpcom:
f.write(" %s *%s;\n" % (type.name, varname))
else:
f.write(" nsCOMPtr<%s> %s;\n" % (type.name, varname))
return
warn("Unable to declare result of type %s" % type.name)
f.write(" !; // TODO - Declare out parameter `%s`.\n" % varname)
def writeResultDecl(f, member, varname):
type = member.realtype
if isVoidType(type):
return # nothing to declare
t = xpidl.unaliasType(type)
if t.kind == "builtin":
if not t.nativename.endswith("*"):
if type.kind == "typedef":
typeName = type.name # use it
else:
typeName = t.nativename
f.write(" %s %s;\n" % (typeName, varname))
return
elif t.kind == "native":
name = xpidl.getBuiltinOrNativeTypeName(t)
if name in ("[domstring]", "[astring]"):
f.write(" nsString %s;\n" % varname)
return
elif name == "[jsval]":
return # nothing to declare; see special case in outParamForm
elif t.kind in ("interface", "forward"):
if member.kind == "method" and member.notxpcom:
f.write(" %s *%s;\n" % (type.name, varname))
else:
f.write(" nsCOMPtr<%s> %s;\n" % (type.name, varname))
return
warn("Unable to declare result of type %s" % type.name)
f.write(" !; // TODO - Declare out parameter `%s`.\n" % varname)
def writeArgumentUnboxing(f, i, name, type, haveCcx, optional, rvdeclared,
nullBehavior, undefinedBehavior):
# f - file to write to
# i - int or None - Indicates the source jsval. If i is an int, the source
# jsval is argv[i]; otherwise it is *vp. But if Python i >= C++ argc,
# which can only happen if optional is True, the argument is missing;
# use JSVAL_NULL as the source jsval instead.
# name - str - name of the native C++ variable to create.
# type - xpidl.{Interface,Native,Builtin} - IDL type of argument
# optional - bool - True if the parameter is optional.
# rvdeclared - bool - False if no |nsresult rv| has been declared earlier.
typeName = xpidl.getBuiltinOrNativeTypeName(type)
isSetter = (i is None)
if isSetter:
argPtr = "vp"
argVal = "*vp"
elif optional:
if typeName == "[jsval]":
val = "JSVAL_VOID"
else:
val = "JSVAL_NULL"
argVal = "(%d < argc ? argv[%d] : %s)" % (i, i, val)
argPtr = "(%d < argc ? &argv[%d] : NULL)" % (i, i)
else:
argVal = "argv[%d]" % i
argPtr = "&" + argVal
params = {
'name': name,
'argVal': argVal,
'argPtr': argPtr,
'nullBehavior': nullBehavior or 'DefaultNullBehavior',
'undefinedBehavior': undefinedBehavior or 'DefaultUndefinedBehavior'
}
if typeName is not None:
template = argumentUnboxingTemplates.get(typeName)
if template is not None:
f.write(string.Template(template).substitute(params))
return rvdeclared
# else fall through; the type isn't supported yet.
elif isInterfaceType(type):
if type.name == 'nsIVariant':
# Totally custom.
assert haveCcx
template = (
" nsCOMPtr<nsIVariant> ${name}(already_AddRefed<nsIVariant>("
"XPCVariant::newVariant(ccx, ${argVal})));\n"
" if (!${name}) {\n"
" xpc_qsThrowBadArgWithCcx(ccx, NS_ERROR_XPC_BAD_CONVERT_JS, %d);\n"
" return JS_FALSE;\n"
" }\n") % i
f.write(string.Template(template).substitute(params))
return rvdeclared
elif type.name == 'nsIAtom':
# Should have special atomizing behavior. Fall through.
pass
else:
if not rvdeclared:
f.write(" nsresult rv;\n");
f.write(" %s *%s;\n" % (type.name, name))
f.write(" xpc_qsSelfRef %sref;\n" % name)
f.write(" rv = xpc_qsUnwrapArg<%s>("
"cx, %s, &%s, &%sref.ptr, %s);\n"
% (type.name, argVal, name, name, argPtr))
f.write(" if (NS_FAILED(rv)) {\n")
if isSetter:
f.write(" xpc_qsThrowBadSetterValue("
"cx, rv, JSVAL_TO_OBJECT(*tvr.jsval_addr()), id);\n")
elif haveCcx:
f.write(" xpc_qsThrowBadArgWithCcx(ccx, rv, %d);\n" % i)
else:
f.write(" xpc_qsThrowBadArgWithDetails(cx, rv, %d, %s, %s);\n" % (i, "\"\"", "\"\""))
f.write(" return JS_FALSE;\n"
" }\n")
return True
warn("Unable to unbox argument of type %s (native type %s)" % (type.name, typeName))
if i is None:
src = '*vp'
else:
src = 'argv[%d]' % i
f.write(" !; // TODO - Unbox argument %s = %s\n" % (name, src))
return rvdeclared
def writeArgumentUnboxing(f, i, name, type, haveCcx, optional, rvdeclared,
nullBehavior, undefinedBehavior):
# f - file to write to
# i - int or None - Indicates the source jsval. If i is an int, the source
# jsval is argv[i]; otherwise it is *vp. But if Python i >= C++ argc,
# which can only happen if optional is True, the argument is missing;
# use JSVAL_NULL as the source jsval instead.
# name - str - name of the native C++ variable to create.
# type - xpidl.{Interface,Native,Builtin} - IDL type of argument
# optional - bool - True if the parameter is optional.
# rvdeclared - bool - False if no |nsresult rv| has been declared earlier.
typeName = xpidl.getBuiltinOrNativeTypeName(type)
isSetter = (i is None)
if isSetter:
argPtr = "vp"
argVal = "*vp"
elif optional:
if typeName == "[jsval]":
val = "JSVAL_VOID"
else:
val = "JSVAL_NULL"
argVal = "(%d < argc ? argv[%d] : %s)" % (i, i, val)
argPtr = "(%d < argc ? &argv[%d] : NULL)" % (i, i)
else:
argVal = "argv[%d]" % i
argPtr = "&" + argVal
params = {
'name': name,
'argVal': argVal,
'argPtr': argPtr,
'nullBehavior': nullBehavior or 'DefaultNullBehavior',
'undefinedBehavior': undefinedBehavior or 'DefaultUndefinedBehavior'
}
if typeName is not None:
template = argumentUnboxingTemplates.get(typeName)
if template is not None:
f.write(string.Template(template).substitute(params))
return rvdeclared
# else fall through; the type isn't supported yet.
elif isInterfaceType(type):
if type.name == 'nsIVariant':
# Totally custom.
assert haveCcx
template = (
" nsCOMPtr<nsIVariant> ${name}(already_AddRefed<nsIVariant>("
"XPCVariant::newVariant(ccx, ${argVal})));\n"
" if (!${name}) {\n"
" xpc_qsThrowBadArgWithCcx(ccx, NS_ERROR_XPC_BAD_CONVERT_JS, %d);\n"
" return JS_FALSE;\n"
" }\n") % i
f.write(string.Template(template).substitute(params))
return rvdeclared
elif type.name == 'nsIAtom':
# Should have special atomizing behavior. Fall through.
pass
else:
if not rvdeclared:
f.write(" nsresult rv;\n")
f.write(" %s *%s;\n" % (type.name, name))
f.write(" xpc_qsSelfRef %sref;\n" % name)
f.write(" rv = xpc_qsUnwrapArg<%s>("
"cx, %s, &%s, &%sref.ptr, %s);\n" %
(type.name, argVal, name, name, argPtr))
f.write(" if (NS_FAILED(rv)) {\n")
if isSetter:
f.write(" xpc_qsThrowBadSetterValue("
"cx, rv, JSVAL_TO_OBJECT(*tvr.jsval_addr()), id);\n")
elif haveCcx:
f.write(" xpc_qsThrowBadArgWithCcx(ccx, rv, %d);\n" % i)
else:
f.write(" xpc_qsThrowBadArg(cx, rv, vp, %d);\n" % i)
f.write(" return JS_FALSE;\n" " }\n")
return True
warn("Unable to unbox argument of type %s (native type %s)" %
(type.name, typeName))
if i is None:
src = '*vp'
else:
src = 'argv[%d]' % i
f.write(" !; // TODO - Unbox argument %s = %s\n" % (name, src))
return rvdeclared