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#include "json.h"
#include "tokenizer.h"
#include <cstddef>
#include <stdexcept>
#include <string>
namespace TehJSON
{
JSON::JSON()
:children()
{
}
JSON::~JSON()
{
}
std::string JSON::leafType()
{
if(!isLeaf)
throw std::runtime_error("Node is not a leaf!");
throw std::runtime_error("Not implemented yet");
}
std::string JSON::getSerialized()
{
return _getSerialized(0);
}
std::string JSON::_getSerialized(int currIndent)
{
if(isLeaf)
return dataSerializer(data);
std::string serialized = "{\n";
int childrenLeft = childCount();
for(auto [childName, child]: children)
{
childrenLeft--;
for(int i = 0; i < currIndent + 1; i++)
serialized += '\t';
serialized += "\"" + childName + "\": ";
serialized += child._getSerialized(currIndent + 1);
if(childrenLeft != 0)
serialized += ',';
serialized += '\n';
}
for(int i = 0; i < currIndent; i++)
serialized += '\t';
serialized += "}";
return serialized;
}
JSON& JSON::operator[](std::string name)
{
if(isLeaf)
throw std::runtime_error("Node is a leaf!");
// if(children.count(name) == 0)
// throw std::out_of_range("Child \"" + name + "\" does not exist");
return children[name];
}
size_t JSON::childCount()
{
if(isLeaf)
throw std::runtime_error("Node is a leaf!");
return children.size();
}
Token JSON::consume()
{
if(tokenPos >= tokens.size())
throw std::out_of_range("No tokens left, but json not finished!");
return tokens[tokenPos++];
}
Token JSON::consume(TokenType type)
{
Token t = consume();
if(t.type != type)
throw std::runtime_error("Wrong token type, expected: " + getTokenName(type) + ", but got: " + getTokenName(t.type));
return t;
}
TokenType JSON::nextTokenType()
{
if(tokenPos >= tokens.size())
throw std::out_of_range("No tokens left, but json not finished!");
return tokens[tokenPos].type;
}
void JSON::readFromString(std::string s)
{
Tokenizer tokenizer;
tokenizer.appendInput(s);
std::vector<Token> stringTokens = tokenizer.tokenize();
readFromTokens(stringTokens);
}
void JSON::readFromTokens(std::vector<Token> tokens)
{
this->tokens = tokens;
tokenPos = 0;
consume(TokenType::LBrace);
while(nextTokenType() != TokenType::RBrace)
{
Token childName = consume(TokenType::StringLit);
// std::cout << "Child: " << childName.content << std::endl;
consume(TokenType::Colon);
switch(nextTokenType())
{
case TokenType::LBrace:
{
std::vector<Token> childTokens;
while(nextTokenType() != TokenType::RBrace)
{
childTokens.push_back(consume());
}
childTokens.push_back(consume(TokenType::RBrace));
children[childName.content].readFromTokens(childTokens);
break;
}
case TokenType::StringLit: children[childName.content].set<std::string>(consume(TokenType::StringLit).content); break;
case TokenType::IntLit: children[childName.content].set<int>(std::stoi(consume(TokenType::IntLit).content)); break;
case TokenType::FloatLit: children[childName.content].set<float>(std::stof(consume(TokenType::FloatLit).content)); break;
case TokenType::BoolLit: children[childName.content].set<bool>(consume(TokenType::BoolLit).content == "true"); break;
case TokenType::LSquare:
{
consume(TokenType::LSquare);
std::vector<int> vec;
while(nextTokenType() != TokenType::RSquare)
{
if(nextTokenType() != TokenType::IntLit)
throw std::runtime_error("Only int arrays are supported so far");
vec.push_back(std::stoi(consume(TokenType::IntLit).content));
if(nextTokenType() == TokenType::Comma)
{
consume(TokenType::Comma);
}
}
consume(TokenType::RSquare);
children[childName.content].set<int>(vec);
break;
};
default: throw std::runtime_error("Token type is not a literal!");
}
if(nextTokenType() != TokenType::RBrace)
consume(TokenType::Comma);
}
consume(TokenType::RBrace);
}
// Serializers for basic types
template <> std::string TehJSON::JSON::serializeData<int>(int *data)
{
return std::to_string(*data);
}
template <> std::string TehJSON::JSON::serializeData<float>(float *data)
{
return std::to_string(*data);
}
template <> std::string TehJSON::JSON::serializeData<std::string>(std::string *data)
{
return '"' + *data + '"';
}
template <> std::string TehJSON::JSON::serializeData<bool>(bool *data)
{
return (*data)?"true":"false";
}
}
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