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package server
import "core:encoding/json"
import "core:strings"
import "core:runtime"
import "core:mem"
import "core:fmt"
/*
Right now union handling is type specific so you can only have one struct type, int type, etc.
*/
unmarshal :: proc(
json_value: json.Value,
v: any,
allocator: mem.Allocator,
) -> json.Marshal_Error {
using runtime
if v == nil {
return nil
}
if json_value == nil {
return nil
}
type_info := type_info_base(type_info_of(v.id))
#partial switch j in json_value {
case json.Object:
#partial switch variant in type_info.variant {
case Type_Info_Struct:
for field, i in variant.names {
a := any{
rawptr(uintptr(v.data) + uintptr(variant.offsets[i])),
variant.types[i].id,
}
//TEMP most likely have to rewrite the entire unmarshal using tags instead, because i sometimes have to support names like 'context', which can't be written like that
if field[len(field) - 1] == '_' {
if ret := unmarshal(
j[field[:len(field) - 1]],
a,
allocator,
); ret != nil {
return ret
}
} else {
if ret := unmarshal(j[field], a, allocator); ret != nil {
return ret
}
}
}
case Type_Info_Union:
tag_ptr := uintptr(v.data) + variant.tag_offset
tag_any := any{rawptr(tag_ptr), variant.tag_type.id}
not_optional := 1
mem.copy(
cast(rawptr)tag_ptr,
¬_optional,
size_of(variant.tag_type),
)
id := variant.variants[0].id
unmarshal(json_value, any{v.data, id}, allocator)
}
case json.Array:
#partial switch variant in type_info.variant {
case Type_Info_Dynamic_Array:
array := (^mem.Raw_Dynamic_Array)(v.data)
if array.data == nil {
array.data = mem.alloc(
len(j) * variant.elem_size,
variant.elem.align,
allocator,
) or_else panic("OOM")
array.len = len(j)
array.cap = len(j)
array.allocator = allocator
} else {
return .Unsupported_Type
}
for i in 0 ..< array.len {
a := any{
rawptr(
uintptr(array.data) + uintptr(variant.elem_size * i),
),
variant.elem.id,
}
if ret := unmarshal(j[i], a, allocator); ret != nil {
return ret
}
}
case:
return .Unsupported_Type
}
case json.String:
#partial switch variant in type_info.variant {
case Type_Info_String:
str := (^string)(v.data)
str^ = strings.clone(j, allocator)
case Type_Info_Enum:
for name, i in variant.names {
lower_name := strings.to_lower(name, allocator)
lower_j := strings.to_lower(string(j), allocator)
if lower_name == lower_j {
mem.copy(v.data, &variant.values[i], size_of(variant.base))
}
delete(lower_name, allocator)
delete(lower_j, allocator)
}
}
case json.Integer:
#partial switch variant in &type_info.variant {
case Type_Info_Integer:
switch type_info.size {
case 8:
tmp := i64(j)
mem.copy(v.data, &tmp, type_info.size)
case 4:
tmp := i32(j)
mem.copy(v.data, &tmp, type_info.size)
case 2:
tmp := i16(j)
mem.copy(v.data, &tmp, type_info.size)
case 1:
tmp := i8(j)
mem.copy(v.data, &tmp, type_info.size)
case:
return .Unsupported_Type
}
case Type_Info_Union:
tag_ptr := uintptr(v.data) + variant.tag_offset
}
case json.Float:
if _, ok := type_info.variant.(Type_Info_Float); ok {
switch type_info.size {
case 8:
tmp := f64(j)
mem.copy(v.data, &tmp, type_info.size)
case 4:
tmp := f32(j)
mem.copy(v.data, &tmp, type_info.size)
case:
return .Unsupported_Type
}
}
case json.Null:
case json.Boolean:
#partial switch variant in &type_info.variant {
case Type_Info_Boolean:
tmp := bool(j)
mem.copy(v.data, &tmp, type_info.size)
case Type_Info_Union:
tag_ptr := uintptr(v.data) + variant.tag_offset
tag_any := any{rawptr(tag_ptr), variant.tag_type.id}
not_optional := 1
mem.copy(
cast(rawptr)tag_ptr,
¬_optional,
size_of(variant.tag_type),
)
id := variant.variants[0].id
unmarshal(json_value, any{v.data, id}, allocator)
}
case:
return .Unsupported_Type
}
return nil
}
|
