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