diff --git a/src/coders/commons.cpp b/src/coders/commons.cpp
index 120c180d..14664c0d 100644
--- a/src/coders/commons.cpp
+++ b/src/coders/commons.cpp
@@ -181,23 +181,27 @@ int64_t BasicParser::parseSimpleInt(int base) {
     return value;
 }
 
-double BasicParser::parseNumber(int sign) {
+bool BasicParser::parseNumber(int sign, number_u& out) {
     char c = peek();
     int base = 10;
     if (c == '0' && pos + 1 < source.length() && 
           (base = is_box(source[pos+1])) != 10) {
         pos += 2;
-        return parseSimpleInt(base);
+        out.ival = parseSimpleInt(base);
+        return true;
     } else if (c == 'i' && pos + 2 < source.length() && source[pos+1] == 'n' && source[pos+2] == 'f') {
         pos += 3;
-        return INFINITY * sign;
+        out.fval = INFINITY * sign;
+        return false;
     } else if (c == 'n' && pos + 2 < source.length() && source[pos+1] == 'a' && source[pos+2] == 'n') {
         pos += 3;
-        return NAN * sign;
+        out.fval = NAN * sign;
+        return false;
     }
     int64_t value = parseSimpleInt(base);
     if (!hasNext()) {
-        return value * sign;
+        out.ival = value * sign;
+        return true;
     }
     c = source[pos];
     if (c == 'e' || c == 'E') {
@@ -209,7 +213,8 @@ double BasicParser::parseNumber(int sign) {
         } else if (peek() == '+'){
             pos++;
         }
-        return sign * value * power(10.0, s * parseSimpleInt(10));
+        out.fval = sign * value * power(10.0, s * parseSimpleInt(10));
+        return false;
     }
     if (c == '.') {
         pos++;
@@ -235,11 +240,14 @@ double BasicParser::parseNumber(int sign) {
             } else if (peek() == '+'){
                 pos++;
             }
-            return sign * dvalue * power(10.0, s * parseSimpleInt(10));
+            out.fval = sign * dvalue * power(10.0, s * parseSimpleInt(10));
+            return false;
         }
-        return dvalue;
+        out.fval = dvalue;
+        return false;
     }
-    return value;
+    out.ival = value;
+    return true;
 }
 
 string BasicParser::parseString(char quote) {
diff --git a/src/coders/commons.h b/src/coders/commons.h
index a7769ff3..a76d0fd5 100644
--- a/src/coders/commons.h
+++ b/src/coders/commons.h
@@ -5,6 +5,11 @@
 #include <stdexcept>
 #include "../typedefs.h"
 
+union number_u {
+    double fval;
+    int64_t ival;
+};
+
 inline int is_box(int c) {
     switch (c) {
         case 'B':
@@ -73,7 +78,7 @@ protected:
 
     std::string parseName();
     int64_t parseSimpleInt(int base);
-    double parseNumber(int sign);
+    bool parseNumber(int sign, number_u& out);
     std::string parseString(char chr);
 
     parsing_error error(std::string message);
diff --git a/src/coders/json.cpp b/src/coders/json.cpp
index 9b7a57b3..971e7cc1 100644
--- a/src/coders/json.cpp
+++ b/src/coders/json.cpp
@@ -15,7 +15,7 @@ using std::unordered_map;
 using std::stringstream;
 using std::make_pair;
 
-inline void newline(std::stringstream& ss, bool nice, uint indent, const std::string indentstr) {
+inline void newline(stringstream& ss, bool nice, uint indent, const string indentstr) {
     if (nice) {
         ss << "\n";
         for (uint i = 0; i < indent; i++) {
@@ -26,10 +26,23 @@ inline void newline(std::stringstream& ss, bool nice, uint indent, const std::st
     }
 }
 
-void stringify(Value* value, stringstream& ss, int indent, string indentstr, bool nice);
-void stringifyObj(JObject* obj, stringstream& ss, int indent, string indentstr, bool nice);
+void stringify(Value* value, 
+               stringstream& ss, 
+               int indent, 
+               string indentstr, 
+               bool nice);
 
-void stringify(Value* value, stringstream& ss, int indent, string indentstr, bool nice) {
+void stringifyObj(JObject* obj, 
+               stringstream& ss, 
+               int indent, 
+               string indentstr, 
+               bool nice);
+
+void stringify(Value* value, 
+               stringstream& ss, 
+               int indent, 
+               string indentstr, 
+               bool nice) {
     if (value->type == valtype::object) {
         stringifyObj(value->value.obj, ss, indent, indentstr, nice);
     }
@@ -57,7 +70,9 @@ void stringify(Value* value, stringstream& ss, int indent, string indentstr, boo
     } else if (value->type == valtype::boolean) {
         ss << (value->value.boolean ? "true" : "false");
     } else if (value->type == valtype::number) {
-        ss << value->value.num;
+        ss << value->value.decimal;
+    } else if (value->type == valtype::integer) {
+        ss << value->value.integer;
     } else if (value->type == valtype::string) {
         ss << escape_string(*value->value.str);
     }
@@ -103,11 +118,39 @@ JArray::~JArray() {
 }
 
 std::string JArray::str(size_t index) const {
-    return *values[index]->value.str;
+    const auto& val = values[index];
+    switch (val->type) {
+        case valtype::string: return *val->value.str;
+        case valtype::boolean: return val->value.boolean ? "true" : "false";
+        case valtype::number: return std::to_string(val->value.decimal);
+        case valtype::integer: return std::to_string(val->value.integer);
+        default:
+            throw std::runtime_error("type error");
+    }
 }
 
 double JArray::num(size_t index) const {
-    return values[index]->value.num;
+    const auto& val = values[index];
+    switch (val->type) {
+        case valtype::number: return val->value.decimal;
+        case valtype::integer: return val->value.integer;
+        case valtype::string: return std::stoll(*val->value.str);
+        case valtype::boolean: return val->value.boolean;
+        default:
+            throw std::runtime_error("type error");
+    }
+}
+
+int64_t JArray::integer(size_t index) const {
+    const auto& val = values[index];
+    switch (val->type) {
+        case valtype::number: return val->value.decimal;
+        case valtype::integer: return val->value.integer;
+        case valtype::string: return std::stoll(*val->value.str);
+        case valtype::boolean: return val->value.boolean;
+        default:
+            throw std::runtime_error("type error");
+    }
 }
 
 JObject* JArray::obj(size_t index) const {
@@ -130,25 +173,33 @@ JArray& JArray::put(string value) {
 }
 
 JArray& JArray::put(uint value) {
-    return put((double)value);
+    return put((int64_t)value);
 }
 
 JArray& JArray::put(int value) {
-    return put((double)value);
+    return put((int64_t)value);
+}
+
+JArray& JArray::put(int64_t value) {
+    valvalue val;
+    val.integer = value;
+    values.push_back(new Value(valtype::integer, val));
+    return *this;
+}
+
+JArray& JArray::put(uint64_t value) {
+    return put((int64_t)value);
 }
 
 JArray& JArray::put(double value) {
     valvalue val;
-    val.num = value;
+    val.decimal = value;
     values.push_back(new Value(valtype::number, val));
     return *this;
 }
 
 JArray& JArray::put(float value) {
-    valvalue val;
-    val.num = value;
-    values.push_back(new Value(valtype::number, val));
-    return *this;
+    return put((double)value);
 }
 
 JArray& JArray::put(bool value) {
@@ -172,46 +223,96 @@ JArray& JArray::put(JArray* value) {
     return *this;
 }
 
+JArray& JArray::putArray() {
+    JArray* arr = new JArray();
+    put(arr);
+    return *arr;
+}
+
+JObject& JArray::putObj() {
+    JObject* obj = new JObject();
+    put(obj);
+    return *obj;
+}
+
 JObject::~JObject() {
     for (auto entry : map) {
         delete entry.second;
     }
 }
 
-void JObject::str(std::string key, std::string& dst) const {
-    auto found = map.find(key);
-    if (found != map.end())
-        dst = *found->second->value.str;
+void JObject::str(string key, string& dst) const {
+    dst = getStr(key, dst);
 }
 
-void JObject::num(std::string key, double& dst) const {
+string JObject::getStr(string key, const string& def) const {
     auto found = map.find(key);
-    if (found != map.end())
-        dst = found->second->value.num;
+    if (found == map.end())
+        return def;
+    auto& val = found->second;
+    switch (val->type) {
+        case valtype::string: return *val->value.str;
+        case valtype::boolean: return val->value.boolean ? "true" : "false";
+        case valtype::number: return std::to_string(val->value.decimal);
+        case valtype::integer: return std::to_string(val->value.integer);
+        default: throw std::runtime_error("type error");
+    } 
 }
 
-void JObject::num(std::string key, ubyte& dst) const {
+double JObject::getNum(string key, double def) const {
     auto found = map.find(key);
-    if (found != map.end())
-        dst = found->second->value.num;
+    if (found == map.end())
+        return def;
+    auto& val = found->second;
+    switch (val->type) {
+        case valtype::number: return val->value.decimal;
+        case valtype::integer: return val->value.integer;
+        case valtype::string: return std::stoull(*val->value.str);
+        case valtype::boolean: return val->value.boolean;
+        default: throw std::runtime_error("type error");
+    }
+}
+
+int64_t JObject::getInteger(string key, int64_t def) const {
+    auto found = map.find(key);
+    if (found == map.end())
+        return def;
+    auto& val = found->second;
+    switch (val->type) {
+        case valtype::number: return val->value.decimal;
+        case valtype::integer: return val->value.integer;
+        case valtype::string: return std::stoull(*val->value.str);
+        case valtype::boolean: return val->value.boolean;
+        default: throw std::runtime_error("type error");
+    }
+}
+
+void JObject::num(string key, double& dst) const {
+    dst = getNum(key, dst);
 }
 
 void JObject::num(std::string key, float& dst) const {
-    auto found = map.find(key);
-    if (found != map.end())
-        dst = found->second->value.num;
+    dst = getNum(key, dst);
+}
+
+void JObject::num(std::string key, ubyte& dst) const {
+    dst = getInteger(key, dst);
 }
 
 void JObject::num(std::string key, int& dst) const {
-    auto found = map.find(key);
-    if (found != map.end())
-        dst = found->second->value.num;
+    dst = getInteger(key, dst);
+}
+
+void JObject::num(std::string key, int64_t& dst) const {
+    dst = getInteger(key, dst);
+}
+
+void JObject::num(std::string key, uint64_t& dst) const {
+    dst = getInteger(key, dst);
 }
 
 void JObject::num(std::string key, uint& dst) const {
-    auto found = map.find(key);
-    if (found != map.end())
-        dst = found->second->value.num;
+    dst = getInteger(key, dst);
 }
 
 JObject* JObject::obj(std::string key) const {
@@ -235,11 +336,24 @@ void JObject::flag(std::string key, bool& dst) const {
 }
 
 JObject& JObject::put(string key, uint value) {
-    return put(key, (double)value);
+    return put(key, (int64_t)value);
 }
 
 JObject& JObject::put(string key, int value) {
-    return put(key, (double)value);
+    return put(key, (int64_t)value);
+}
+
+JObject& JObject::put(string key, int64_t value) {
+    auto found = map.find(key);
+    if (found != map.end()) delete found->second;
+    valvalue val;
+    val.integer = value;
+    map.insert(make_pair(key, new Value(valtype::integer, val)));
+    return *this;
+}
+
+JObject& JObject::put(string key, uint64_t value) {
+    return put(key, (int64_t)value);
 }
 
 JObject& JObject::put(string key, float value) {
@@ -250,7 +364,7 @@ JObject& JObject::put(string key, double value) {
     auto found = map.find(key);
     if (found != map.end()) delete found->second;
     valvalue val;
-    val.num = value;
+    val.decimal = value;
     map.insert(make_pair(key, new Value(valtype::number, val)));
     return *this;
 }
@@ -295,12 +409,18 @@ JObject& JObject::put(string key, bool value){
     return *this;
 }
 
-JArray& JObject::putArray(std::string key) {
+JArray& JObject::putArray(string key) {
     JArray* arr = new JArray();
     put(key, arr);
     return *arr;
 }
 
+JObject& JObject::putObj(string key) {
+    JObject* obj = new JObject();
+    put(key, obj);
+    return *obj;
+}
+
 bool JObject::has(string key) {
     return map.find(key) != map.end();
 }
@@ -386,10 +506,10 @@ Value* Parser::parseValue() {
             val.boolean = false;
             return new Value(valtype::boolean, val);
         } else if (literal == "inf") {
-            val.num = INFINITY;
+            val.decimal = INFINITY;
             return new Value(valtype::number, val);
         } else if (literal == "nan") {
-            val.num = NAN;
+            val.decimal = NAN;
             return new Value(valtype::number, val);
         }
         throw error("invalid literal");
@@ -404,12 +524,28 @@ Value* Parser::parseValue() {
     }
     if (next == '-' || next == '+') {
         pos++;
-        val.num = parseNumber(next == '-' ? -1 : 1);
-        return new Value(valtype::number, val);
+        number_u num;
+        valtype type;
+        if (parseNumber(next == '-' ? -1 : 1, num)) {
+            val.integer = num.ival;
+            type = valtype::integer;
+        } else {
+            val.decimal = num.fval;
+            type = valtype::number;
+        }
+        return new Value(type, val);
     }
     if (is_digit(next)) {
-        val.num = parseNumber(1);
-        return new Value(valtype::number, val);  
+        number_u num;
+        valtype type;
+        if (parseNumber(1, num)) {
+            val.integer = num.ival;
+            type = valtype::integer;
+        } else {
+            val.decimal = num.fval;
+            type = valtype::number;
+        }
+        return new Value(type, val);  
     }
     if (next == '"' || next == '\'') {
         pos++;
@@ -419,11 +555,11 @@ Value* Parser::parseValue() {
     throw error("unexpected character '"+string({next})+"'");
 }
 
-JObject* json::parse(std::string filename, std::string source) {
+JObject* json::parse(string filename, string source) {
     Parser parser(filename, source);
     return parser.parse();
 }
 
-JObject* json::parse(std::string source) {
+JObject* json::parse(string source) {
     return parse("<string>", source);
-}
\ No newline at end of file
+}
diff --git a/src/coders/json.h b/src/coders/json.h
index d4961cb7..94d8b5a9 100644
--- a/src/coders/json.h
+++ b/src/coders/json.h
@@ -19,14 +19,15 @@ namespace json {
     extern std::string stringify(JObject* obj, bool nice, std::string indent);
 
     enum class valtype {
-        object, array, number, string, boolean
+        object, array, number, integer, string, boolean
     };
 
     union valvalue {
         JObject* obj;
         JArray* arr;
         std::string* str;
-        double num;
+        double decimal;
+        int64_t integer;
         bool boolean;
     };
 
@@ -45,6 +46,7 @@ namespace json {
 
         std::string str(size_t index) const;
         double num(size_t index) const;
+        int64_t integer(size_t num) const;
         JObject* obj(size_t index) const;
         JArray* arr(size_t index) const;
         bool flag(size_t index) const;
@@ -55,12 +57,17 @@ namespace json {
 
         JArray& put(uint value);
         JArray& put(int value);
+        JArray& put(uint64_t value);
+        JArray& put(int64_t value);
         JArray& put(float value);
         JArray& put(double value);
         JArray& put(std::string value);
         JArray& put(JObject* value);
         JArray& put(JArray* value);
         JArray& put(bool value);
+
+        JArray& putArray();
+        JObject& putObj();
     };
 
     class JObject {
@@ -68,10 +75,15 @@ namespace json {
         std::unordered_map<std::string, Value*> map;
         ~JObject();
 
+        std::string getStr(std::string key, const std::string& def) const;
+        double getNum(std::string key, double def) const;
+        int64_t getInteger(std::string key, int64_t def) const;
         void str(std::string key, std::string& dst) const;
         void num(std::string key, int& dst) const;
         void num(std::string key, float& dst) const;
         void num(std::string key, uint& dst) const;
+        void num(std::string key, int64_t& dst) const;
+        void num(std::string key, uint64_t& dst) const;
         void num(std::string key, ubyte& dst) const;
         void num(std::string key, double& dst) const;
         JObject* obj(std::string key) const;
@@ -80,6 +92,8 @@ namespace json {
 
         JObject& put(std::string key, uint value);
         JObject& put(std::string key, int value);
+        JObject& put(std::string key, int64_t value);
+        JObject& put(std::string key, uint64_t value);
         JObject& put(std::string key, float value);
         JObject& put(std::string key, double value);
         JObject& put(std::string key, const char* value);
@@ -87,7 +101,9 @@ namespace json {
         JObject& put(std::string key, JObject* value);
         JObject& put(std::string key, JArray* value);
         JObject& put(std::string key, bool value);
+
         JArray& putArray(std::string key);
+        JObject& putObj(std::string key);
 
         bool has(std::string key);
     };
diff --git a/src/coders/toml.cpp b/src/coders/toml.cpp
index fb6bf773..3f5ee332 100644
--- a/src/coders/toml.cpp
+++ b/src/coders/toml.cpp
@@ -208,16 +208,24 @@ void Reader::readSection(Section* section /*nullable*/) {
         expect('=');
         c = peek();
         if (is_digit(c)) {
-            double number = parseNumber(1);
-            if (section) {
-                section->set(name, number);
+            number_u num;
+            if (parseNumber(1, num)) {
+                if (section)
+                    section->set(name, (double)num.ival);
+            } else {
+                if (section)
+                    section->set(name, num.fval);
             }
         } else if (c == '-' || c == '+') {
             int sign = c == '-' ? -1 : 1;
             pos++;
-            double number = parseNumber(sign);
-            if (section) {
-                section->set(name, number);
+            number_u num;
+            if (parseNumber(sign, num)) {
+                if (section)
+                    section->set(name, (double)num.ival);
+            } else {
+                if (section)
+                    section->set(name, num.fval);
             }
         } else if (is_identifier_start(c)) {
             string identifier = parseName();