147 lines
2.9 KiB
V
147 lines
2.9 KiB
V
// Copyright (c) 2019-2020 Alexander Medvednikov. All rights reserved.
|
|
// Use of this source code is governed by an MIT license
|
|
// that can be found in the LICENSE file.
|
|
module json2
|
|
|
|
pub interface Serializable {
|
|
from_json(f Any)
|
|
to_json() string
|
|
}
|
|
|
|
// Decodes a JSON string into an `Any` type. Returns an option.
|
|
pub fn raw_decode(src string) ?Any {
|
|
mut p := new_parser(src, true)
|
|
return p.decode()
|
|
}
|
|
|
|
// Same with `raw_decode`, but skips the type conversion for certain types when decoding a certain value.
|
|
pub fn fast_raw_decode(src string) ?Any {
|
|
mut p := new_parser(src, false)
|
|
return p.decode()
|
|
}
|
|
// A generic function that decodes a JSON string into the target type.
|
|
//
|
|
// TODO: decode must return an optional generics
|
|
pub fn decode<T>(src string) T {
|
|
res := raw_decode(src) or {
|
|
panic(err)
|
|
}
|
|
mut typ := T{}
|
|
typ.from_json(res)
|
|
return typ
|
|
}
|
|
// TODO: decode must return an optional generics
|
|
// pub fn decode2<T>(src string) ?T {
|
|
// res := raw_decode(src)?
|
|
|
|
// match typeof(T) {
|
|
// 'string' {
|
|
// return res.str()
|
|
// }
|
|
// 'int' {
|
|
// return res.int()
|
|
// }
|
|
// 'f64' {
|
|
// return res.f64()
|
|
// }
|
|
// else {
|
|
// mut typ := T{}
|
|
// typ.from_json(res)
|
|
// return typ
|
|
// }
|
|
// }
|
|
// }
|
|
// A generic function that encodes a type into a JSON string.
|
|
pub fn encode<T>(typ T) string {
|
|
// if typeof(typ) in ['string', 'int', 'f64'] {
|
|
// return Any(typ).str()
|
|
// }
|
|
|
|
return typ.to_json()
|
|
}
|
|
// A simple function that returns `Null` struct. For use on constructing an `Any` object.
|
|
pub fn null() Null {
|
|
return Null{}
|
|
}
|
|
// Use `Any` as a map.
|
|
pub fn (f Any) as_map() map[string]Any {
|
|
if f is map[string]Any {
|
|
return f
|
|
} else if f is []Any {
|
|
mut mp := map[string]Any
|
|
for i, fi in f {
|
|
mp['$i'] = fi
|
|
}
|
|
return mp
|
|
}
|
|
return { '0': f }
|
|
}
|
|
|
|
// Use `Any` as an integer.
|
|
pub fn (f Any) int() int {
|
|
match f {
|
|
int { return f }
|
|
i64 { return int(f) }
|
|
f64 { return f.str().int() }
|
|
f32 { return f.str().int() }
|
|
bool { return int(f) }
|
|
else { return 0 }
|
|
}
|
|
}
|
|
|
|
// Use `Any` as a 64-bit integer.
|
|
pub fn (f Any) i64() i64 {
|
|
match f {
|
|
int { return f }
|
|
i64 { return int(f) }
|
|
f64 { return f.str().i64() }
|
|
f32 { return f.str().i64() }
|
|
bool { return int(f) }
|
|
else { return 0 }
|
|
}
|
|
}
|
|
|
|
// Use `Any` as a 32-bit float.
|
|
pub fn (f Any) f32() f32 {
|
|
match f {
|
|
int { return f }
|
|
i64 { return f.str().f32() }
|
|
f64 { return f.str().f32() }
|
|
f32 { return f }
|
|
else { return 0.0 }
|
|
}
|
|
}
|
|
|
|
// Use `Any` as a float.
|
|
pub fn (f Any) f64() f64 {
|
|
match f {
|
|
int { return f }
|
|
i64 { return f }
|
|
f64 { return f }
|
|
f32 { return f.str().f64() }
|
|
else { return 0.0 }
|
|
}
|
|
}
|
|
// Use `Any` as an array.
|
|
pub fn (f Any) arr() []Any {
|
|
if f is []Any {
|
|
return f
|
|
} else if f is map[string]Any {
|
|
mut arr := []Any{}
|
|
for _, v in f {
|
|
arr << v
|
|
}
|
|
return arr
|
|
}
|
|
return [f]
|
|
}
|
|
|
|
// Use `Any` as a bool
|
|
pub fn (f Any) bool() bool {
|
|
match f {
|
|
bool { return f }
|
|
string { return f.bool() }
|
|
else { return false }
|
|
}
|
|
}
|