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399 lines
9.5 KiB
V
399 lines
9.5 KiB
V
import x.json2
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enum JobTitle {
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manager
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executive
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worker
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}
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struct Employee {
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pub mut:
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name string
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age int
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salary f32
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title JobTitle
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}
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fn (e Employee) to_json() string {
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mut mp := map[string]json2.Any{}
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mp['name'] = json2.Any(e.name)
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mp['age'] = json2.Any(e.age)
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mp['salary'] = json2.Any(e.salary)
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mp['title'] = json2.Any(int(e.title))
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/*
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$for field in Employee.fields {
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d := e.$(field.name)
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$if field.typ is JobTitle {
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mp[field.name] = json.encode<int>(d)
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} $else {
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mp[field.name] = d
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}
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}
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*/
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return mp.str()
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}
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fn (mut e Employee) from_json(any json2.Any) {
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mp := any.as_map()
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e.name = mp['name'] or { json2.Any('') }.str()
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e.age = mp['age'] or { json2.Any(0) }.int()
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e.salary = mp['salary'] or { json2.Any(0) }.f32()
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e.title = unsafe { JobTitle(mp['title'] or { json2.Any(0) }.int()) }
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}
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fn test_simple() {
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x := Employee{'Peter', 28, 95000.5, .worker}
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s := json2.encode<Employee>(x)
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eprintln('Employee x: ${s}')
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assert s == '{"name":"Peter","age":28,"salary":95000.5,"title":2}'
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y := json2.decode<Employee>(s) or {
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println(err)
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assert false
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return
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}
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eprintln('Employee y: ${y}')
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assert y.name == 'Peter'
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assert y.age == 28
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assert y.salary == 95000.5
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assert y.title == .worker
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}
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fn test_fast_raw_decode() {
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s := '{"name":"Peter","age":28,"salary":95000.5,"title":2}'
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o := json2.fast_raw_decode(s) or {
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assert false
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json2.Any(json2.null)
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}
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str := o.str()
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assert str == '{"name":"Peter","age":"28","salary":"95000.5","title":"2"}'
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}
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fn test_character_unescape() {
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message := r'{
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"newline": "new\nline",
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"tab": "\ttab",
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"backslash": "back\\slash",
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"quotes": "\"quotes\"",
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"slash":"\/dev\/null"
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}'
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mut obj := json2.raw_decode(message) or {
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println(err)
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assert false
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return
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}
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lines := obj.as_map()
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eprintln('${lines}')
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assert lines['newline'] or { 0 }.str() == 'new\nline'
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assert lines['tab'] or { 0 }.str() == '\ttab'
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assert lines['backslash'] or { 0 }.str() == 'back\\slash'
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assert lines['quotes'] or { 0 }.str() == '"quotes"'
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assert lines['slash'] or { 0 }.str() == '/dev/null'
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}
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struct User2 {
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pub mut:
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age int
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nums []int
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}
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fn (mut u User2) from_json(an json2.Any) {
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mp := an.as_map()
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mut js_field_name := ''
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$for field in User.fields {
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js_field_name = field.name
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for attr in field.attrs {
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if attr.starts_with('json:') {
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js_field_name = attr.all_after('json:').trim_left(' ')
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break
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}
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}
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match field.name {
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'age' { u.age = mp[js_field_name] or { 0 }.int() }
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'nums' { u.nums = mp[js_field_name] or { 0 }.arr().map(it.int()) }
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else {}
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}
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}
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}
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// User struct needs to be `pub mut` for now in order to access and manipulate values
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struct User {
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pub mut:
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age int
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nums []int
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last_name string [json: lastName]
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is_registered bool [json: IsRegistered]
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typ int [json: 'type']
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pets string [json: 'pet_animals'; raw]
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}
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fn (mut u User) from_json(an json2.Any) {
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mp := an.as_map()
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mut js_field_name := ''
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$for field in User.fields {
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// FIXME: C error when initializing js_field_name inside comptime for
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js_field_name = field.name
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for attr in field.attrs {
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if attr.starts_with('json:') {
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js_field_name = attr.all_after('json:').trim_left(' ')
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break
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}
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}
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match field.name {
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'age' { u.age = mp[js_field_name] or { 0 }.int() }
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'nums' { u.nums = mp[js_field_name] or { 0 }.arr().map(it.int()) }
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'last_name' { u.last_name = mp[js_field_name] or { 0 }.str() }
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'is_registered' { u.is_registered = mp[js_field_name] or { 0 }.bool() }
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'typ' { u.typ = mp[js_field_name] or { 0 }.int() }
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'pets' { u.pets = mp[js_field_name] or { 0 }.str() }
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else {}
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}
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}
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}
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fn (u User) to_json() string {
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// TODO: derive from field
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mut mp := {
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'age': json2.Any(u.age)
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}
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mp['nums'] = u.nums.map(json2.Any(it))
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mp['lastName'] = json2.Any(u.last_name)
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mp['IsRegistered'] = json2.Any(u.is_registered)
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mp['type'] = json2.Any(u.typ)
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mp['pet_animals'] = json2.Any(u.pets)
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return mp.str()
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}
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fn test_parse_user() {
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s := '{"age": 10, "nums": [1,2,3], "type": 1, "lastName": "Johnson", "IsRegistered": true, "pet_animals": {"name": "Bob", "animal": "Dog"}}'
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u2 := json2.decode<User2>(s) or {
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println(err)
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assert false
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return
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}
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println(u2)
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u := json2.decode<User>(s) or {
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println(err)
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assert false
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return
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}
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assert u.age == 10
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assert u.last_name == 'Johnson'
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assert u.is_registered == true
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assert u.nums.len == 3
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assert u.nums[0] == 1
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assert u.nums[1] == 2
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assert u.nums[2] == 3
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assert u.typ == 1
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assert u.pets == '{"name":"Bob","animal":"Dog"}'
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}
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fn test_encode_user() {
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usr := User{
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age: 10
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nums: [1, 2, 3]
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last_name: 'Johnson'
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is_registered: true
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typ: 0
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pets: 'foo'
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}
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expected := '{"age":10,"nums":[1,2,3],"lastName":"Johnson","IsRegistered":true,"type":0,"pet_animals":"foo"}'
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out := json2.encode<User>(usr)
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assert out == expected
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}
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struct Color {
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pub mut:
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space string
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point string [raw]
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}
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fn (mut c Color) from_json(an json2.Any) {
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mp := an.as_map()
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$for field in Color.fields {
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match field.name {
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'space' { c.space = mp[field.name] or { 0 }.str() }
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'point' { c.point = mp[field.name] or { 0 }.str() }
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else {}
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}
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}
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}
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fn test_raw_json_field() {
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color := json2.decode<Color>('{"space": "YCbCr", "point": {"Y": 123}}') or {
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assert false
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Color{}
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}
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assert color.point == '{"Y":123}'
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assert color.space == 'YCbCr'
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}
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/*
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struct City {
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name string
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}
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struct Country {
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cities []City
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name string
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}
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fn test_struct_in_struct() {
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country := json.decode(Country, '{ "name": "UK", "cities": [{"name":"London"}, {"name":"Manchester"}]}') or {
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assert false
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exit(1)
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}
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assert country.name == 'UK'
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assert country.cities.len == 2
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assert country.cities[0].name == 'London'
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assert country.cities[1].name == 'Manchester'
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println(country.cities)
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}
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*/
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fn test_encode_map() {
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expected := '{"one":1,"two":2,"three":3,"four":4}'
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numbers := {
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'one': json2.Any(1)
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'two': json2.Any(2)
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'three': json2.Any(3)
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'four': json2.Any(4)
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}
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out := numbers.str()
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assert out == expected
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}
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/*
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fn test_parse_map() {
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expected := {
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'one': 1
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'two': 2
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'three': 3
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'four': 4
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}
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out := json.decode<map[string]int>('{"one":1,"two":2,"three":3,"four":4}') or {
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assert false
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r := {
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'': 0
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}
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r
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}
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println(out)
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assert out == expected
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}
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struct Data {
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countries []Country
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users map[string]User
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extra map[string]map[string]int
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}
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fn test_nested_type() {
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data_expected := '{"countries":[{"cities":[{"name":"London"},{"name":"Manchester"}],"name":"UK"},{"cities":[{"name":"Donlon"},{"name":"Termanches"}],"name":"KU"}],"users":{"Foo":{"age":10,"nums":[1,2,3],"lastName":"Johnson","IsRegistered":true,"type":0,"pet_animals":"little foo"},"Boo":{"age":20,"nums":[5,3,1],"lastName":"Smith","IsRegistered":false,"type":4,"pet_animals":"little boo"}},"extra":{"2":{"n1":2,"n2":4,"n3":8,"n4":16},"3":{"n1":3,"n2":9,"n3":27,"n4":81}}}'
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data := Data{
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countries: [
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Country{
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name: 'UK'
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cities: [City{'London'},
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City{'Manchester'},
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]
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},
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Country{
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name: 'KU'
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cities: [City{'Donlon'},
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City{'Termanches'},
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]
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},
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]
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users: {
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'Foo': User{
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age: 10
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nums: [1, 2, 3]
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last_name: 'Johnson'
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is_registered: true
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typ: 0
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pets: 'little foo'
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},
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'Boo': User{
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age: 20
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nums: [5, 3, 1]
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last_name: 'Smith'
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is_registered: false
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typ: 4
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pets: 'little boo'
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}
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},
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extra: {
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'2': {
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'n1': 2
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'n2': 4
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'n3': 8
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'n4': 16
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},
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'3': {
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'n1': 3
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'n2': 9
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'n3': 27
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'n4': 81
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},
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}
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}
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out := json.encode(data)
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println(out)
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assert out == data_expected
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data2 := json.decode(Data, data_expected) or {
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assert false
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Data{}
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}
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assert data2.countries.len == data.countries.len
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for i in 0..1 {
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assert data2.countries[i].name == data.countries[i].name
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assert data2.countries[i].cities.len == data.countries[i].cities.len
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for j in 0..1 {
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assert data2.countries[i].cities[j].name == data.countries[i].cities[j].name
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}
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}
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for key, user in data.users {
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assert data2.users[key].age == user.age
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assert data2.users[key].nums == user.nums
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assert data2.users[key].last_name == user.last_name
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assert data2.users[key].is_registered == user.is_registered
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assert data2.users[key].typ == user.typ
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// assert data2.users[key].pets == user.pets // TODO FIX
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}
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for k, v in data.extra {
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for k2, v2 in v {
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assert data2.extra[k][k2] == v2
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}
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}
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}
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fn test_errors() {
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invalid_array := fn () {
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data := '{"countries":[{"cities":[{"name":"London"},{"name":"Manchester"}],"name":"UK"},{"cities":{"name":"Donlon"},"name":"KU"}],"users":{"Foo":{"age":10,"nums":[1,2,3],"lastName":"Johnson","IsRegistered":true,"type":0,"pet_animals":"little foo"},"Boo":{"age":20,"nums":[5,3,1],"lastName":"Smith","IsRegistered":false,"type":4,"pet_animals":"little boo"}},"extra":{"2":{"n1":2,"n2":4,"n3":8,"n4":16},"3":{"n1":3,"n2":9,"n3":27,"n4":81}}}'
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json.decode(Data, data) or {
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println(err)
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assert err.starts_with('Json element is not an array:')
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return
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}
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assert false
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}
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invalid_object := fn() {
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data := '{"countries":[{"cities":[{"name":"London"},{"name":"Manchester"}],"name":"UK"},{"cities":[{"name":"Donlon"},{"name":"Termanches"}],"name":"KU"}],"users":[{"age":10,"nums":[1,2,3],"lastName":"Johnson","IsRegistered":true,"type":0,"pet_animals":"little foo"},{"age":20,"nums":[5,3,1],"lastName":"Smith","IsRegistered":false,"type":4,"pet_animals":"little boo"}],"extra":{"2":{"n1":2,"n2":4,"n3":8,"n4":16},"3":{"n1":3,"n2":9,"n3":27,"n4":81}}}'
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json.decode(Data, data) or {
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println(err)
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assert err.starts_with('Json element is not an object:')
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return
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}
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assert false
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}
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invalid_array()
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invalid_object()
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}
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*/
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