Aegisub/aegisub/libaegisub/common/option_visit.cpp

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// Copyright (c) 2010, Amar Takhar <verm@aegisub.org>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
//
// $Id$
/// @file option_visit.cpp
/// @brief Cajun JSON visitor to load config values.
/// @see option_visit.h
/// @ingroup libaegisub
#ifndef LAGI_PRE
#include <cmath>
#include <memory>
#endif
#include <libaegisub/colour.h>
#include <libaegisub/option_value.h>
#include "option_visit.h"
namespace agi {
ConfigVisitor::ConfigVisitor(OptionValueMap &val, const std::string &member_name)
: values(val)
, name(member_name)
{
}
void ConfigVisitor::Visit(const json::Object& object) {
json::Object::const_iterator index(object.begin()), index_end(object.end());
if (!name.empty())
name += "/";
for (; index != index_end; ++index) {
ConfigVisitor config_visitor(values, name + index->first);
index->second.Accept(config_visitor);
}
}
void ConfigVisitor::Visit(const json::Array& array) {
OptionValueList *array_list = NULL;
json::Array::const_iterator index(array.begin()), indexEnd(array.end());
for (; index != indexEnd; ++index) {
const json::Object& index_array = *index;
json::Object::const_iterator it(index_array.begin()), index_objectEnd(index_array.end());
for (; it != index_objectEnd; ++it) {
const std::string& member_name = it->first;
// This can only happen once since a list must always be of the same
// type, if we try inserting another type into it we want it to fail.
if (!array_list) {
if (member_name == "string")
array_list = new OptionValueListString(name);
else if (member_name == "int")
array_list = new OptionValueListInt(name);
else if (member_name == "double")
array_list = new OptionValueListDouble(name);
else if (member_name == "bool")
array_list = new OptionValueListBool(name);
else if (member_name == "colour")
array_list = new OptionValueListColour(name);
else
throw OptionJsonValueArray("Array type not handled");
}
try {
if (member_name == "string")
array_list->InsertString(it->second);
else if (member_name == "int")
array_list->InsertInt((int64_t)(double)it->second);
else if (member_name == "double")
array_list->InsertDouble(it->second);
else if (member_name == "bool")
array_list->InsertBool(it->second);
else if (member_name == "colour")
array_list->InsertColour(it->second);
} catch (agi::Exception&) {
delete array_list;
throw OptionJsonValueArray("Attempt to insert value into array of wrong type");
}
} // for index_object
} // for index
if (array_list) AddOptionValue(array_list);
}
void ConfigVisitor::Visit(const json::Number& number) {
if (int64_t(number) == ceil(number)) {
AddOptionValue(new OptionValueInt(name, int64_t(number)));
} else {
AddOptionValue(new OptionValueDouble(name, number));
}
}
void ConfigVisitor::Visit(const json::String& string) {
if (string.find("rgb(") == 0) {
AddOptionValue(new OptionValueColour(name, string));
} else {
AddOptionValue(new OptionValueString(name, string));
}
}
void ConfigVisitor::Visit(const json::Boolean& boolean) {
AddOptionValue(new OptionValueBool(name, boolean));
}
void ConfigVisitor::Visit(const json::Null& null) {
throw OptionJsonValueNull("Attempt to read null value");
}
void ConfigVisitor::AddOptionValue(OptionValue* opt) {
OptionValue *opt_cur;
OptionValueMap::iterator index;
if ((index = values.find(name)) != values.end()) {
opt_cur = index->second;
} else {
values.insert(OptionValuePair(name, opt));
return;
}
// Ensure than opt is deleted at the end of this function even if the Set
// method throws
std::auto_ptr<OptionValue> auto_opt(opt);
int type = opt_cur->GetType();
switch (type) {
case OptionValue::Type_String:
opt_cur->SetString(opt->GetString());
break;
case OptionValue::Type_Int:
opt_cur->SetInt(opt->GetInt());
break;
case OptionValue::Type_Double:
opt_cur->SetDouble(opt->GetDouble());
break;
case OptionValue::Type_Colour:
opt_cur->SetColour(opt->GetColour());
break;
case OptionValue::Type_Bool:
opt_cur->SetBool(opt->GetBool());
break;
case OptionValue::Type_List_String:
opt_cur->SetListString(opt->GetListString());
break;
case OptionValue::Type_List_Int:
opt_cur->SetListInt(opt->GetListInt());
break;
case OptionValue::Type_List_Double:
opt_cur->SetListDouble(opt->GetListDouble());
break;
case OptionValue::Type_List_Colour:
opt_cur->SetListColour(opt->GetListColour());
break;
case OptionValue::Type_List_Bool:
opt_cur->SetListBool(opt->GetListBool());
break;
}
}
} // namespace agi