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toml: add direct decoding and encoding

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Turiiya 2023-04-16 08:46:15 +02:00 committed by Turiiya
parent 65a493d023
commit 3b47254dd8
1 changed files with 36 additions and 2 deletions
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38
vlib/toml/toml.v
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@ -7,6 +7,7 @@ import toml.ast
import toml.input
import toml.scanner
import toml.parser
import time
// Null is used in sumtype checks as a "default" value when nothing else is possible.
pub struct Null {
@ -16,14 +17,47 @@ pub struct Null {
pub fn decode[T](toml_txt string) !T {
doc := parse_text(toml_txt)!
mut typ := T{}
typ.from_toml(doc.to_any())
$for field in T.fields {
$if field.is_enum {
// TODO: check enums
doc.value(field.name).int()
} $else $if field.typ is string {
typ.$(field.name) = doc.value(field.name).string()
} $else $if field.typ is bool {
typ.$(field.name) = doc.value(field.name).bool()
} $else $if field.typ is int {
typ.$(field.name) = doc.value(field.name).int()
} $else $if field.typ is i64 {
typ.$(field.name) = doc.value(field.name).i64()
} $else $if field.typ is u64 {
typ.$(field.name) = doc.value(field.name).u64()
} $else $if field.typ is f32 {
typ.$(field.name) = doc.value(field.name).f32()
} $else $if field.typ is f64 {
typ.$(field.name) = doc.value(field.name).f64()
// TODO: extend
} $else $if field.typ is time.Time {
typ.$(field.name) = doc.value(field.name).datetime()
}
}
return typ
}
// encode encodes the type `T` into a TOML string.
// Currently encode expects the method `.to_toml()` exists on `T`.
pub fn encode[T](typ T) string {
return typ.to_toml()
mut mp := map[string]Any{}
$if T is $struct {
$for field in T.fields {
value := typ.$(field.name)
$if field.is_enum {
mp[field.name] = Any(value.str())
} $else {
mp[field.name] = Any(value)
}
}
}
return mp.to_toml()
}
// DateTime is the representation of an RFC 3339 datetime string.