def writestackedlistenertypedobjectlistimplementation(istate, schema):
naming = istate.naming()
subtypenaming = CppParserSubTypeNaming(schema, naming)
outfile = istate.outputfile()
outfile.write(
string.Template("""
${subtype_cppstackedlistlistenerclassname}::${subtype_cppstackedlistlistenerclassname}(
${cppsupermainlistenerclassname}* mainListener,
${cppsuperstackedlistenerclassname}* parent)
:
${cppsuperstackedlistenerclassname}(mainListener, parent)
{
fTarget = new List<${subtype_cppmodelclassname}*, true>();
}
${subtype_cppstackedlistlistenerclassname}::~${subtype_cppstackedlistlistenerclassname}()
{
}
List<${subtype_cppmodelclassname}*, true>*
${subtype_cppstackedlistlistenerclassname}::Target()
{
return fTarget;
}
bool
${subtype_cppstackedlistlistenerclassname}::Handle(const BJsonEvent& event)
{
switch (event.EventType()) {
case B_JSON_ARRAY_END:
Pop();
delete this;
break;
case B_JSON_OBJECT_START:
{
${subtype_cppstackedlistenerclassname}* nextListener =
new ${subtype_cppstackedlistenerclassname}(fMainListener, this);
fTarget->Add(nextListener->Target());
Push(nextListener);
break;
}
default:
HandleError(B_NOT_ALLOWED, JSON_EVENT_LISTENER_ANY_LINE,
"illegal state - unexpected json event parsing an array of ${subtype_cppmodelclassname}");
break;
}
return ErrorStatus() == B_OK;
}
""").substitute(hdscommon.uniondicts(naming.todict(), subtypenaming.todict())))
def writebulkcontainerstackedlistenerinterface(istate, schema):
naming = istate.naming()
subtypenaming = CppParserSubTypeNaming(schema, naming)
outfile = istate.outputfile()
# This is a sub-class of the main model object listener. It will ping out to an item listener
# when parsing is complete.
outfile.write(
string.Template("""
class ${cppitemlistenerstackedlistenerclassname} : public ${subtype_cppstackedlistenerclassname} {
public:
${cppitemlistenerstackedlistenerclassname}(
${cppsupermainlistenerclassname}* mainListener,
${cppsuperstackedlistenerclassname}* parent,
${cppitemlistenerclassname}* itemListener);
~${cppitemlistenerstackedlistenerclassname}();
void WillPop();
private:
${cppitemlistenerclassname}* fItemListener;
};
class ${cppbulkcontainerstackedlistenerclassname} : public ${cppsuperstackedlistenerclassname} {
public:
${cppbulkcontainerstackedlistenerclassname}(
${cppsupermainlistenerclassname}* mainListener,
${cppsuperstackedlistenerclassname}* parent,
${cppitemlistenerclassname}* itemListener);
~${cppbulkcontainerstackedlistenerclassname}();
bool Handle(const BJsonEvent& event);
private:
BString fNextItemName;
${cppitemlistenerclassname}* fItemListener;
};
class ${cppbulkcontaineritemliststackedlistenerclassname} : public ${cppsuperstackedlistenerclassname} {
public:
${cppbulkcontaineritemliststackedlistenerclassname}(
${cppsupermainlistenerclassname}* mainListener,
${cppsuperstackedlistenerclassname}* parent,
${cppitemlistenerclassname}* itemListener);
~${cppbulkcontaineritemliststackedlistenerclassname}();
bool Handle(const BJsonEvent& event);
void WillPop();
private:
${cppitemlistenerclassname}* fItemListener;
};
""").substitute(hdscommon.uniondicts(naming.todict(), subtypenaming.todict())))
def writeageneralstackedlistenerinterface(istate, alistenerclassname):
istate.outputfile().write(
string.Template("""
class ${alistenerclassname} : public ${cppsuperstackedlistenerclassname} {
public:
${alistenerclassname}(
${cppsupermainlistenerclassname}* mainListener,
${cppsuperstackedlistenerclassname}* parent);
~${alistenerclassname}();
bool Handle(const BJsonEvent& event);
};
""").substitute(
hdscommon.uniondicts(istate.naming().todict(),
{'alistenerclassname': alistenerclassname})))
def writestackedlistenerinterface(istate, subschema):
naming = istate.naming()
subtypenaming = CppParserSubTypeNaming(subschema, naming)
if not istate.isinterfacehandledcppname(subtypenaming.cppmodelclassname()):
istate.addinterfacehandledcppname(subtypenaming.cppmodelclassname())
istate.outputfile().write(
string.Template("""
class ${subtype_cppstackedlistenerclassname} : public ${cppsuperstackedlistenerclassname} {
public:
${subtype_cppstackedlistenerclassname}(
${cppsupermainlistenerclassname}* mainListener,
${cppsuperstackedlistenerclassname}* parent);
~${subtype_cppstackedlistenerclassname}();
bool Handle(const BJsonEvent& event);
${subtype_cppmodelclassname}* Target();
protected:
${subtype_cppmodelclassname}* fTarget;
BString fNextItemName;
};
class ${subtype_cppstackedlistlistenerclassname} : public ${cppsuperstackedlistenerclassname} {
public:
${subtype_cppstackedlistlistenerclassname}(
${cppsupermainlistenerclassname}* mainListener,
${cppsuperstackedlistenerclassname}* parent);
~${subtype_cppstackedlistlistenerclassname}();
bool Handle(const BJsonEvent& event);
List<${subtype_cppmodelclassname}*, true>* Target(); // list of %s pointers
private:
List<${subtype_cppmodelclassname}*, true>* fTarget;
};
""").substitute(hdscommon.uniondicts(naming.todict(), subtypenaming.todict())))
for propname, propmetadata in subschema['properties'].items():
if propmetadata['type'] == 'array':
writestackedlistenerinterface(istate, propmetadata['items'])
elif propmetadata['type'] == 'object':
writestackedlistenerinterface(istate, propmetadata)
def writegeneralnoopstackedlistenerconstructordestructor(istate, aclassname):
istate.outputfile().write(
string.Template("""
${aclassname}::${aclassname}(
${cppsupermainlistenerclassname}* mainListener,
${cppsuperstackedlistenerclassname}* parent)
:
${cppsuperstackedlistenerclassname}(mainListener, parent)
{
}
${aclassname}::~${aclassname}()
{
}
""").substitute(
hdscommon.uniondicts(istate.naming().todict(),
{'aclassname': aclassname})))
def writemainlistenerimplementation(istate, schema, supportbulkcontainer):
outfile = istate.outputfile()
naming = istate.naming()
subtypenaming = CppParserSubTypeNaming(schema, istate.naming())
# super (abstract) listener
outfile.write(
string.Template("""
${cppsupermainlistenerclassname}::${cppsupermainlistenerclassname}()
{
fStackedListener = NULL;
fErrorStatus = B_OK;
}
${cppsupermainlistenerclassname}::~${cppsupermainlistenerclassname}()
{
}
void
${cppsupermainlistenerclassname}::HandleError(status_t status, int32 line, const char* message)
{
fprintf(stderr, "an error has arisen processing json for '${cpprootmodelclassname}'; %s\\n", message);
fErrorStatus = status;
}
void
${cppsupermainlistenerclassname}::Complete()
{
}
status_t
${cppsupermainlistenerclassname}::ErrorStatus()
{
return fErrorStatus;
}
void
${cppsupermainlistenerclassname}::SetStackedListener(
${cppsuperstackedlistenerclassname}* stackedListener)
{
fStackedListener = stackedListener;
}
""").substitute(naming.todict()))
# single parser
outfile.write(
string.Template("""
${cppsinglemainlistenerclassname}::${cppsinglemainlistenerclassname}()
:
${cppsupermainlistenerclassname}()
{
fTarget = NULL;
}
${cppsinglemainlistenerclassname}::~${cppsinglemainlistenerclassname}()
{
}
bool
${cppsinglemainlistenerclassname}::Handle(const BJsonEvent& event)
{
if (fErrorStatus != B_OK)
return false;
if (fStackedListener != NULL)
return fStackedListener->Handle(event);
switch (event.EventType()) {
case B_JSON_OBJECT_START:
{
${subtype_cppstackedlistenerclassname}* nextListener = new ${subtype_cppstackedlistenerclassname}(
this, NULL);
fTarget = nextListener->Target();
SetStackedListener(nextListener);
break;
}
default:
HandleError(B_NOT_ALLOWED, JSON_EVENT_LISTENER_ANY_LINE,
"illegal state - unexpected json event parsing top level for ${cpprootmodelclassname}");
break;
}
return ErrorStatus() == B_OK;
}
${cpprootmodelclassname}*
${cppsinglemainlistenerclassname}::Target()
{
return fTarget;
}
""").substitute(hdscommon.uniondicts(naming.todict(), subtypenaming.todict())))
if supportbulkcontainer:
# create a main listener that can work through the list of top level model objects and ping the listener
outfile.write(
string.Template("""
${cppbulkcontainermainlistenerclassname}::${cppbulkcontainermainlistenerclassname}(
${cppitemlistenerclassname}* itemListener) : ${cppsupermainlistenerclassname}()
{
fItemListener = itemListener;
}
${cppbulkcontainermainlistenerclassname}::~${cppbulkcontainermainlistenerclassname}()
{
}
bool
${cppbulkcontainermainlistenerclassname}::Handle(const BJsonEvent& event)
{
if (fErrorStatus != B_OK)
return false;
if (fStackedListener != NULL)
return fStackedListener->Handle(event);
switch (event.EventType()) {
case B_JSON_OBJECT_START:
{
${cppbulkcontainerstackedlistenerclassname}* nextListener =
new ${cppbulkcontainerstackedlistenerclassname}(
this, NULL, fItemListener);
SetStackedListener(nextListener);
return true;
break;
}
default:
HandleError(B_NOT_ALLOWED, JSON_EVENT_LISTENER_ANY_LINE,
"illegal state - unexpected json event parsing top level for ${cppbulkcontainermainlistenerclassname}");
break;
}
return ErrorStatus() == B_OK;
}
""").substitute(hdscommon.uniondicts(naming.todict(), subtypenaming.todict())))
def writebulkcontainerstackedlistenerimplementation(istate, schema):
naming = istate.naming()
subtypenaming = CppParserSubTypeNaming(schema, naming)
outfile = istate.outputfile()
outfile.write(
string.Template("""
${cppitemlistenerstackedlistenerclassname}::${cppitemlistenerstackedlistenerclassname}(
${cppsupermainlistenerclassname}* mainListener, ${cppsuperstackedlistenerclassname}* parent,
${cppitemlistenerclassname}* itemListener)
:
${subtype_cppstackedlistenerclassname}(mainListener, parent)
{
fItemListener = itemListener;
}
${cppitemlistenerstackedlistenerclassname}::~${cppitemlistenerstackedlistenerclassname}()
{
}
void
${cppitemlistenerstackedlistenerclassname}::WillPop()
{
fItemListener->Handle(fTarget);
delete fTarget;
}
${cppbulkcontainerstackedlistenerclassname}::${cppbulkcontainerstackedlistenerclassname}(
${cppsupermainlistenerclassname}* mainListener, ${cppsuperstackedlistenerclassname}* parent,
${cppitemlistenerclassname}* itemListener)
:
${cppsuperstackedlistenerclassname}(mainListener, parent)
{
fItemListener = itemListener;
}
${cppbulkcontainerstackedlistenerclassname}::~${cppbulkcontainerstackedlistenerclassname}()
{
}
bool
${cppbulkcontainerstackedlistenerclassname}::Handle(const BJsonEvent& event)
{
switch (event.EventType()) {
case B_JSON_ARRAY_END:
HandleError(B_NOT_ALLOWED, JSON_EVENT_LISTENER_ANY_LINE, "illegal state - unexpected start of array");
break;
case B_JSON_OBJECT_NAME:
fNextItemName = event.Content();
break;
case B_JSON_OBJECT_START:
Push(new ${cppgeneralobjectstackedlistenerclassname}(fMainListener, this));
break;
case B_JSON_ARRAY_START:
if (fNextItemName == "items")
Push(new ${cppbulkcontaineritemliststackedlistenerclassname}(fMainListener, this, fItemListener));
else
Push(new ${cppgeneralarraystackedlistenerclassname}(fMainListener, this));
break;
case B_JSON_OBJECT_END:
Pop();
delete this;
break;
default:
// ignore
break;
}
return ErrorStatus() == B_OK;
}
${cppbulkcontaineritemliststackedlistenerclassname}::${cppbulkcontaineritemliststackedlistenerclassname}(
${cppsupermainlistenerclassname}* mainListener, ${cppsuperstackedlistenerclassname}* parent,
${cppitemlistenerclassname}* itemListener)
:
${cppsuperstackedlistenerclassname}(mainListener, parent)
{
fItemListener = itemListener;
}
${cppbulkcontaineritemliststackedlistenerclassname}::~${cppbulkcontaineritemliststackedlistenerclassname}()
{
}
bool
${cppbulkcontaineritemliststackedlistenerclassname}::Handle(const BJsonEvent& event)
{
switch (event.EventType()) {
case B_JSON_OBJECT_START:
Push(new ${cppitemlistenerstackedlistenerclassname}(fMainListener, this, fItemListener));
break;
case B_JSON_ARRAY_END:
Pop();
delete this;
break;
default:
HandleError(B_NOT_ALLOWED, JSON_EVENT_LISTENER_ANY_LINE, "illegal state - unexpected json event");
break;
}
return ErrorStatus() == B_OK;
}
void
${cppbulkcontaineritemliststackedlistenerclassname}::WillPop()
{
fItemListener->Complete();
}
""").substitute(hdscommon.uniondicts(naming.todict(), subtypenaming.todict())))
def writestackedlistenertypedobjectimplementation(istate, schema):
outfile = istate.outputfile()
naming = istate.naming()
subtypenaming = CppParserSubTypeNaming(schema, naming)
outfile.write(
string.Template("""
${subtype_cppstackedlistenerclassname}::${subtype_cppstackedlistenerclassname}(
${cppsupermainlistenerclassname}* mainListener,
${cppsuperstackedlistenerclassname}* parent)
:
${cppsuperstackedlistenerclassname}(mainListener, parent)
{
fTarget = new ${subtype_cppmodelclassname}();
}
${subtype_cppstackedlistenerclassname}::~${subtype_cppstackedlistenerclassname}()
{
}
${subtype_cppmodelclassname}*
${subtype_cppstackedlistenerclassname}::Target()
{
return fTarget;
}
bool
${subtype_cppstackedlistenerclassname}::Handle(const BJsonEvent& event)
{
switch (event.EventType()) {
case B_JSON_ARRAY_END:
HandleError(B_NOT_ALLOWED, JSON_EVENT_LISTENER_ANY_LINE, "illegal state - unexpected start of array");
break;
case B_JSON_OBJECT_NAME:
fNextItemName = event.Content();
break;
case B_JSON_OBJECT_END:
Pop();
delete this;
break;
""").substitute(hdscommon.uniondicts(naming.todict(), subtypenaming.todict())))
# now extract the fields from the schema that need to be fed in.
writestackedlistenerfieldsimplementation(istate, schema,
jscom.CPP_TYPE_STRING,
'B_JSON_STRING',
'new BString(event.Content())')
writestackedlistenerfieldsimplementation(istate, schema,
jscom.CPP_TYPE_BOOLEAN,
'B_JSON_TRUE', 'true')
writestackedlistenerfieldsimplementation(istate, schema,
jscom.CPP_TYPE_BOOLEAN,
'B_JSON_FALSE', 'false')
outfile.write(' case B_JSON_NULL:\n')
outfile.write(' {\n')
for propname, propmetadata in schema['properties'].items():
# TODO; deal with array case somehow.
if 'array' != propmetadata['type']:
writestackedlistenerfieldimplementation(istate, propname, 'NULL')
outfile.write(' fNextItemName.SetTo("");\n')
outfile.write(' break;\n')
outfile.write(' }\n')
# number type is a bit complex because it can either be a double or it can be an
# integral value.
outfile.write(' case B_JSON_NUMBER:\n')
outfile.write(' {\n')
for propname, propmetadata in schema['properties'].items():
propcpptypename = jscom.propmetadatatocpptypename(propmetadata)
if propcpptypename == jscom.CPP_TYPE_INTEGER:
writestackedlistenerfieldimplementation(istate, propname,
'event.ContentInteger()')
elif propcpptypename == jscom.CPP_TYPE_NUMBER:
writestackedlistenerfieldimplementation(istate, propname,
'event.ContentDouble()')
outfile.write(' fNextItemName.SetTo("");\n')
outfile.write(' break;\n')
outfile.write(' }\n')
# object type; could be a sub-type or otherwise just drop into a placebo consumer to keep the parse
# structure working. This would most likely be additional sub-objects that are additional to the
# expected schema.
outfile.write(' case B_JSON_OBJECT_START:\n')
outfile.write(' {\n')
objectifclausekeyword = 'if'
for propname, propmetadata in schema['properties'].items():
if propmetadata['type'] == jscom.JSON_TYPE_OBJECT:
subtypenaming = CppParserSubTypeNaming(propmetadata, naming)
outfile.write(' %s (fNextItemName == "%s") {\n' %
(objectifclausekeyword, propname))
outfile.write(
' %s* nextListener = new %s(fMainListener, this);\n'
% (subtypenaming.cppstackedlistenerclassname(),
subtypenaming.cppstackedlistenerclassname()))
outfile.write(
' fTarget->Set%s(nextListener->Target());\n' %
(subtypenaming.cppmodelclassname()))
outfile.write(' Push(nextListener);\n')
outfile.write(' }\n')
objectifclausekeyword = 'else if'
outfile.write(' %s (1 == 1) {\n' % objectifclausekeyword)
outfile.write(
' %s* nextListener = new %s(fMainListener, this);\n' %
(naming.cppgeneralobjectstackedlistenerclassname(),
naming.cppgeneralobjectstackedlistenerclassname()))
outfile.write(' Push(nextListener);\n')
outfile.write(' }\n')
outfile.write(' fNextItemName.SetTo("");\n')
outfile.write(' break;\n')
outfile.write(' }\n')
# array type; could be an array of objects or otherwise just drop into a placebo consumer to keep
# the parse structure working.
outfile.write(' case B_JSON_ARRAY_START:\n')
outfile.write(' {\n')
objectifclausekeyword = 'if'
for propname, propmetadata in schema['properties'].items():
if propmetadata['type'] == jscom.JSON_TYPE_ARRAY:
subtypenaming = CppParserSubTypeNaming(propmetadata['items'],
naming)
outfile.write(' %s (fNextItemName == "%s") {\n' %
(objectifclausekeyword, propname))
outfile.write(
' %s* nextListener = new %s(fMainListener, this);\n'
% (subtypenaming.cppstackedlistlistenerclassname(),
subtypenaming.cppstackedlistlistenerclassname()))
outfile.write(
' fTarget->Set%s(nextListener->Target());\n' %
(jscom.propnametocppname(propname)))
outfile.write(' Push(nextListener);\n')
outfile.write(' }\n')
objectifclausekeyword = 'else if'
outfile.write(' %s (1 == 1) {\n' % objectifclausekeyword)
outfile.write(
' %s* nextListener = new %s(fMainListener, this);\n' %
(naming.cppsuperstackedlistenerclassname(),
naming.cppgeneralarraystackedlistenerclassname()))
outfile.write(' Push(nextListener);\n')
outfile.write(' }\n')
outfile.write(' fNextItemName.SetTo("");\n')
outfile.write(' break;\n')
outfile.write(' }\n')
outfile.write("""
}
return ErrorStatus() == B_OK;
}
""")
