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/*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* PointerTracker.cpp
* Maintains a Json pointer from a series of parse events.
* Copyright (C) 2014 Simon Newton
*/
#include <string>
#include <vector>
#include "ola/strings/Format.h"
#include "common/web/PointerTracker.h"
namespace ola {
namespace web {
using std::string;
using std::vector;
void PointerTracker::OpenObject() {
IncrementIndex();
Token token(TOKEN_OBJECT);
m_tokens.push_back(token);
}
void PointerTracker::SetProperty(const string &property) {
if (m_tokens.empty()) {
return;
}
Token &token = m_tokens.back();
if (token.type != TOKEN_OBJECT) {
return;
}
if (token.property_set) {
m_pointer->Pop();
} else {
token.property_set = true;
}
m_pointer->Push(property);
}
void PointerTracker::CloseObject() {
if (m_tokens.empty()) {
return;
}
Token &token = m_tokens.back();
if (token.type == TOKEN_OBJECT) {
if (token.property_set) {
m_pointer->Pop();
}
m_tokens.pop_back();
}
}
void PointerTracker::OpenArray() {
IncrementIndex();
Token token(TOKEN_ARRAY);
m_tokens.push_back(token);
}
void PointerTracker::CloseArray() {
if (m_tokens.empty()) {
return;
}
if (m_tokens.back().type == TOKEN_ARRAY) {
if (m_tokens.back().index >= 0) {
m_pointer->Pop();
}
m_tokens.pop_back();
}
}
void PointerTracker::IncrementIndex() {
if (m_tokens.empty()) {
return;
}
Token &token = m_tokens.back();
if (token.type != TOKEN_ARRAY) {
return;
}
if (token.index >= 0) {
m_pointer->Pop();
}
token.index++;
m_pointer->Push(ola::strings::IntToString(token.index));
}
} // namespace web
} // namespace ola
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