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v/vlib/x/json2/json2.v

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// Copyright (c) 2019-2022 Alexander Medvednikov. All rights reserved.
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// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.
module json2
import strings
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// 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()
}
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// 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()
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}
// decode is a generic function that decodes a JSON string into the target type.
pub fn decode<T>(src string) !T {
res := raw_decode(src)!
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mut typ := T{}
typ.from_json(res)
return typ
}
// encode is a generic function that encodes a type into a JSON string.
pub fn encode<T>(val T) string {
mut sb := strings.new_builder(64)
defer {
unsafe { sb.free() }
}
default_encoder.encode_value(val, mut sb) or {
dump(err)
default_encoder.encode_value<Null>(null, mut sb) or {}
}
return sb.str()
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}
// int uses `Any` as an integer.
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pub fn (f Any) int() int {
match f {
int { return f }
i8, i16, i64, u8, u16, u32, u64, f32, f64, bool { return int(f) }
else { return 0 }
}
}
// i64 uses `Any` as a 64-bit integer.
pub fn (f Any) i64() i64 {
match f {
i64 { return f }
i8, i16, int, u8, u16, u32, u64, f32, f64, bool { return i64(f) }
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else { return 0 }
}
}
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// u64 uses `Any` as a 64-bit unsigned integer.
pub fn (f Any) u64() u64 {
match f {
u64 { return f }
u8, u16, u32, i8, i16, int, i64, f32, f64, bool { return u64(f) }
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else { return 0 }
}
}
// f32 uses `Any` as a 32-bit float.
pub fn (f Any) f32() f32 {
match f {
f32 { return f }
bool, i8, i16, int, i64, u8, u16, u32, u64, f64 { return f32(f) }
else { return 0.0 }
}
}
// f64 uses `Any` as a 64-bit float.
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pub fn (f Any) f64() f64 {
match f {
f64 { return f }
i8, i16, int, i64, u8, u16, u32, u64, f32 { return f64(f) }
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else { return 0.0 }
}
}
// bool uses `Any` as a bool.
pub fn (f Any) bool() bool {
match f {
bool { return f }
string { return f.bool() }
i8, i16, int, i64 { return i64(f) != 0 }
u8, u16, u32, u64 { return u64(f) != 0 }
f32, f64 { return f64(f) != 0.0 }
else { return false }
}
}
// arr uses `Any` as an array.
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pub fn (f Any) arr() []Any {
if f is []Any {
return f
} else if f is map[string]Any {
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mut arr := []Any{}
for _, v in f {
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arr << v
}
return arr
}
return [f]
}
// as_map uses `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
}
}