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v/vlib/toml/any.v

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V

// Copyright (c) 2021 Lars Pontoppidan. All rights reserved.
// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.
module toml
// Pretty much all the same builtin types as the `json2.Any` type plus `DateTime`,`Date`,`Time`
pub type Any = Date
| DateTime
| Null
| Time
| []Any
| bool
| f32
| f64
| i64
| int
| map[string]Any
| string
| u64
// string returns `Any` as a string.
pub fn (a Any) string() string {
match a {
// NOTE if `.clone()` is not used here:
// string { return a as string }
// ... certain call-patterns to this function will cause a memory corruption.
// See `tests/toml_memory_corruption_test.v` for a matching regression test.
string { return (a as string).clone() }
DateTime { return a.str().clone() }
Date { return a.str().clone() }
Time { return a.str().clone() }
else { return a.str().clone() }
}
}
// to_toml returns `Any` as a TOML encoded value.
pub fn (a Any) to_toml() string {
match a {
map[string]Any {
// TODO more format control?
return a.to_inline_toml()
}
[]Any {
return a.to_toml()
}
bool, f32, f64, i64, int, u64 {
return a.str().clone()
}
// NOTE if `.clone()` is not used here:
// string { return a as string }
// ... certain call-patterns to this function will cause a memory corruption.
// See `tests/toml_memory_corruption_test.v` for a matching regression test.
string {
return '"' + (a as string).clone() + '"'
}
DateTime {
return a.str().clone()
}
Date {
return a.str().clone()
}
Time {
return a.str().clone()
}
else {
return a.str().clone()
}
}
}
// int returns `Any` as an 32-bit integer.
pub fn (a Any) int() int {
match a {
int { return a }
i64, f32, f64, bool { return int(a) }
// time.Time { return int(0) } // TODO
else { return 0 }
}
}
// i64 returns `Any` as a 64-bit integer.
pub fn (a Any) i64() i64 {
match a {
i64 { return a }
int, f32, f64, bool { return i64(a) }
// time.Time { return i64(0) } // TODO
else { return 0 }
}
}
// u64 returns `Any` as a 64-bit unsigned integer.
pub fn (a Any) u64() u64 {
match a {
u64 { return a }
int, i64, f32, f64, bool { return u64(a) }
// time.Time { return u64(0) } // TODO
else { return 0 }
}
}
// f32 returns `Any` as a 32-bit float.
pub fn (a Any) f32() f32 {
match a {
f32 { return a }
int, i64, f64 { return f32(a) }
// time.Time { return f32(0) } // TODO
else { return 0.0 }
}
}
// f64 returns `Any` as a 64-bit float.
pub fn (a Any) f64() f64 {
match a {
f64 { return a }
int, i64, f32 { return f64(a) }
// time.Time { return f64(0) } // TODO
else { return 0.0 }
}
}
// array returns `Any` as an array.
pub fn (a Any) array() []Any {
if a is []Any {
return a
} else if a is map[string]Any {
mut arr := []Any{}
for _, v in a {
arr << v
}
return arr
}
return [a]
}
// as_map returns `Any` as a map (TOML table).
pub fn (a Any) as_map() map[string]Any {
if a is map[string]Any {
return a
} else if a is []Any {
mut mp := map[string]Any{}
for i, fi in a {
mp['${i}'] = fi
}
return mp
}
return {
'0': a
}
}
// bool returns `Any` as a boolean.
pub fn (a Any) bool() bool {
match a {
bool { return a }
string { return a.bool() }
else { return false }
}
}
// date returns `Any` as a `toml.Date` struct.
pub fn (a Any) date() Date {
match a {
// string { } // TODO
// NOTE `.clone()` is to avoid memory corruption see `pub fn (a Any) string() string`
Date { return Date{a.str().clone()} }
else { return Date{''} }
}
}
// time returns `Any` as a `toml.Time` struct.
pub fn (a Any) time() Time {
match a {
// string { } // TODO
// NOTE `.clone()` is to avoid memory corruption see `pub fn (a Any) string() string`
Time { return Time{a.str().clone()} }
else { return Time{''} }
}
}
// datetime returns `Any` as a `toml.DateTime` struct.
pub fn (a Any) datetime() DateTime {
match a {
// string { } // TODO
// NOTE `.clone()` is to avoid memory corruption see `pub fn (a Any) string() string`
DateTime { return DateTime{a.str().clone()} }
else { return DateTime{''} }
}
}
// default_to returns `value` if `a Any` is `Null`.
// This can be used to set default values when retrieving
// values. E.g.: `toml_doc.value('wrong.key').default_to(123).int()`
pub fn (a Any) default_to(value Any) Any {
match a {
Null { return value }
else { return a }
}
}
// value queries a value from the map.
// `key` supports a small query syntax scheme:
// Maps can be queried in "dotted" form e.g. `a.b.c`.
// quoted keys are supported as `a."b.c"` or `a.'b.c'`.
// Arrays can be queried with `a[0].b[1].[2]`.
pub fn (m map[string]Any) value(key string) Any {
return Any(m).value(key)
}
// as_strings returns the contents of the map
// as `map[string]string`
pub fn (m map[string]Any) as_strings() map[string]string {
mut result := map[string]string{}
for k, v in m {
result[k] = v.string()
}
return result
}
// to_toml returns the contents of the map
// as a TOML encoded `string`.
pub fn (m map[string]Any) to_toml() string {
mut toml_text := ''
for k, v in m {
key := if k.contains(' ') { '"${k}"' } else { k }
toml_text += '${key} = ${v.to_toml()}\n'
}
toml_text = toml_text.trim_right('\n')
return toml_text
}
// to_inline_toml returns the contents of the map
// as an inline table encoded TOML `string`.
pub fn (m map[string]Any) to_inline_toml() string {
mut toml_text := '{'
mut i := 1
for k, v in m {
key := if k.contains(' ') { '"${k}"' } else { k }
delimeter := if i < m.len { ',' } else { '' }
toml_text += ' ${key} = ${v.to_toml()}${delimeter}'
i++
}
return toml_text + ' }'
}
// value queries a value from the array.
// `key` supports a small query syntax scheme:
// The array can be queried with `[0].b[1].[2]`.
// Maps can be queried in "dotted" form e.g. `a.b.c`.
// quoted keys are supported as `a."b.c"` or `a.'b.c'`.
pub fn (a []Any) value(key string) Any {
return Any(a).value(key)
}
// as_strings returns the contents of the array
// as `[]string`
pub fn (a []Any) as_strings() []string {
mut sa := []string{}
for any in a {
sa << any.string()
}
return sa
}
// to_toml returns the contents of the array
// as a TOML encoded `string`.
pub fn (a []Any) to_toml() string {
mut toml_text := '[\n'
for any in a {
toml_text += ' ' + any.to_toml() + ',\n'
}
toml_text = toml_text.trim_right(',\n')
return toml_text + '\n]'
}
// value queries a value from the `Any` type.
// `key` supports a small query syntax scheme:
// Maps can be queried in "dotted" form e.g. `a.b.c`.
// quoted keys are supported as `a."b.c"` or `a.'b.c'`.
// Arrays can be queried with `a[0].b[1].[2]`.
pub fn (a Any) value(key string) Any {
key_split := parse_dotted_key(key) or { return null }
return a.value_(a, key_split)
}
// value_opt queries a value from the current element's tree. Returns an error
// if the key is not valid or there is no value for the key.
pub fn (a Any) value_opt(key string) !Any {
key_split := parse_dotted_key(key) or { return error('invalid dotted key') }
x := a.value_(a, key_split)
if x is Null {
return error('no value for key')
}
return x
}
// value_ returns the `Any` value found at `key`.
fn (a Any) value_(value Any, key []string) Any {
if key.len == 0 {
return null
}
mut any_value := null
k, index := parse_array_key(key[0])
if k == '' {
arr := value as []Any
any_value = arr[index] or { return null }
}
if value is map[string]Any {
any_value = value[k] or { return null }
if index > -1 {
arr := any_value as []Any
any_value = arr[index] or { return null }
}
}
if key.len <= 1 {
return any_value
}
match any_value {
map[string]Any, []Any {
return a.value_(any_value, key[1..])
}
else {
return value
}
}
}
// reflect returns `T` with `T.<field>`'s value set to the
// value of any 1st level TOML key by the same name.
pub fn (a Any) reflect[T]() T {
mut reflected := T{}
$for field in T.fields {
mut toml_field_name := field.name
// Remapping of field names, for example:
// TOML: 'assert = "ok"'
// V: User { asrt string [toml: 'assert'] }
// User.asrt == 'ok'
for attr in field.attrs {
if attr.starts_with('toml:') {
toml_field_name = attr.all_after(':').trim_space()
}
}
$if field.typ is string {
reflected.$(field.name) = a.value(toml_field_name).default_to('').string()
} $else $if field.typ is bool {
reflected.$(field.name) = a.value(toml_field_name).default_to(false).bool()
} $else $if field.typ is int {
reflected.$(field.name) = a.value(toml_field_name).default_to(0).int()
} $else $if field.typ is f32 {
reflected.$(field.name) = a.value(toml_field_name).default_to(0.0).f32()
} $else $if field.typ is f64 {
reflected.$(field.name) = a.value(toml_field_name).default_to(0.0).f64()
} $else $if field.typ is i64 {
reflected.$(field.name) = a.value(toml_field_name).default_to(0).i64()
} $else $if field.typ is u64 {
reflected.$(field.name) = a.value(toml_field_name).default_to(0).u64()
} $else $if field.typ is Any {
reflected.$(field.name) = a.value(toml_field_name)
} $else $if field.typ is DateTime {
dt := DateTime{'0000-00-00T00:00:00.000'}
reflected.$(field.name) = a.value(toml_field_name).default_to(dt).datetime()
} $else $if field.typ is Date {
da := Date{'0000-00-00'}
reflected.$(field.name) = a.value(toml_field_name).default_to(da).date()
} $else $if field.typ is Time {
t := Time{'00:00:00.000'}
reflected.$(field.name) = a.value(toml_field_name).default_to(t).time()
}
// Arrays of primitive types
$else $if field.typ is []string {
any_array := a.value(toml_field_name).array()
reflected.$(field.name) = any_array.as_strings()
} $else $if field.typ is []bool {
any_array := a.value(toml_field_name).array()
mut arr := []bool{cap: any_array.len}
for any_value in any_array {
arr << any_value.bool()
}
reflected.$(field.name) = arr
} $else $if field.typ is []int {
any_array := a.value(toml_field_name).array()
mut arr := []int{cap: any_array.len}
for any_value in any_array {
arr << any_value.int()
}
reflected.$(field.name) = arr
} $else $if field.typ is []f32 {
any_array := a.value(toml_field_name).array()
mut arr := []f32{cap: any_array.len}
for any_value in any_array {
arr << any_value.f32()
}
reflected.$(field.name) = arr
} $else $if field.typ is []f64 {
any_array := a.value(toml_field_name).array()
mut arr := []f64{cap: any_array.len}
for any_value in any_array {
arr << any_value.f64()
}
reflected.$(field.name) = arr
} $else $if field.typ is []i64 {
any_array := a.value(toml_field_name).array()
mut arr := []i64{cap: any_array.len}
for any_value in any_array {
arr << any_value.i64()
}
reflected.$(field.name) = arr
} $else $if field.typ is []u64 {
any_array := a.value(toml_field_name).array()
mut arr := []u64{cap: any_array.len}
for any_value in any_array {
arr << any_value.u64()
}
reflected.$(field.name) = arr
} $else $if field.typ is []Any {
reflected.$(field.name) = a.value(toml_field_name).array()
} $else $if field.typ is []DateTime {
any_array := a.value(toml_field_name).array()
mut arr := []DateTime{cap: any_array.len}
for any_value in any_array {
arr << any_value.datetime()
}
reflected.$(field.name) = arr
} $else $if field.typ is []Date {
any_array := a.value(toml_field_name).array()
mut arr := []Date{cap: any_array.len}
for any_value in any_array {
arr << any_value.date()
}
reflected.$(field.name) = arr
} $else $if field.typ is []Time {
any_array := a.value(toml_field_name).array()
mut arr := []Time{cap: any_array.len}
for any_value in any_array {
arr << any_value.time()
}
reflected.$(field.name) = arr
}
// String key maps of primitive types
$else $if field.typ is map[string]string {
any_map := a.value(toml_field_name).as_map()
reflected.$(field.name) = any_map.as_strings()
} $else $if field.typ is map[string]bool {
any_map := a.value(toml_field_name).as_map()
mut type_map := map[string]bool{}
for k, any_value in any_map {
type_map[k] = any_value.bool()
}
reflected.$(field.name) = type_map.clone()
} $else $if field.typ is map[string]int {
any_map := a.value(toml_field_name).as_map()
mut type_map := map[string]int{}
for k, any_value in any_map {
type_map[k] = any_value.int()
}
reflected.$(field.name) = type_map.clone()
} $else $if field.typ is map[string]f32 {
any_map := a.value(toml_field_name).as_map()
mut type_map := map[string]f32{}
for k, any_value in any_map {
type_map[k] = any_value.f32()
}
reflected.$(field.name) = type_map.clone()
} $else $if field.typ is map[string]f64 {
any_map := a.value(toml_field_name).as_map()
mut type_map := map[string]f64{}
for k, any_value in any_map {
type_map[k] = any_value.f64()
}
reflected.$(field.name) = type_map.clone()
} $else $if field.typ is map[string]i64 {
any_map := a.value(toml_field_name).as_map()
mut type_map := map[string]i64{}
for k, any_value in any_map {
type_map[k] = any_value.i64()
}
reflected.$(field.name) = type_map.clone()
} $else $if field.typ is map[string]u64 {
any_map := a.value(toml_field_name).as_map()
mut type_map := map[string]u64{}
for k, any_value in any_map {
type_map[k] = any_value.u64()
}
reflected.$(field.name) = type_map.clone()
} $else $if field.typ is map[string]Any {
reflected.$(field.name) = a.value(toml_field_name).as_map()
} $else $if field.typ is map[string]DateTime {
any_map := a.value(toml_field_name).as_map()
mut type_map := map[string]DateTime{}
for k, any_value in any_map {
type_map[k] = any_value.datetime()
}
reflected.$(field.name) = type_map.clone()
} $else $if field.typ is map[string]Date {
any_map := a.value(toml_field_name).as_map()
mut type_map := map[string]Date{}
for k, any_value in any_map {
type_map[k] = any_value.date()
}
reflected.$(field.name) = type_map.clone()
} $else $if field.typ is map[string]Time {
any_map := a.value(toml_field_name).as_map()
mut type_map := map[string]Time{}
for k, any_value in any_map {
type_map[k] = any_value.time()
}
reflected.$(field.name) = type_map.clone()
}
}
return reflected
}