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use winnow::combinator::alt;
use winnow::combinator::fail;
use winnow::combinator::peek;
use winnow::token::any;
use crate::parser::array::array;
use crate::parser::datetime::date_time;
use crate::parser::inline_table::inline_table;
use crate::parser::numbers::{float, integer};
use crate::parser::prelude::*;
use crate::parser::strings::string;
use crate::repr::{Formatted, Repr};
use crate::value as v;
use crate::RawString;
use crate::Value;
// val = string / boolean / array / inline-table / date-time / float / integer
pub(crate) fn value<'i>(check: RecursionCheck) -> impl Parser<Input<'i>, v::Value, ContextError> {
move |input: &mut Input<'i>| {
dispatch!{peek(any);
crate::parser::strings::QUOTATION_MARK |
crate::parser::strings::APOSTROPHE => string.map(|s| {
v::Value::String(Formatted::new(
s.into_owned()
))
}),
crate::parser::array::ARRAY_OPEN => array(check).map(v::Value::Array),
crate::parser::inline_table::INLINE_TABLE_OPEN => inline_table(check).map(v::Value::InlineTable),
// Date/number starts
b'+' | b'-' | b'0'..=b'9' => {
// Uncommon enough not to be worth optimizing at this time
alt((
date_time
.map(v::Value::from),
float
.map(v::Value::from),
integer
.map(v::Value::from),
))
},
// Report as if they were numbers because its most likely a typo
b'_' => {
integer
.map(v::Value::from)
.context(StrContext::Expected(StrContextValue::Description("leading digit")))
},
// Report as if they were numbers because its most likely a typo
b'.' => {
float
.map(v::Value::from)
.context(StrContext::Expected(StrContextValue::Description("leading digit")))
},
b't' => {
crate::parser::numbers::true_.map(v::Value::from)
.context(StrContext::Label("string"))
.context(StrContext::Expected(StrContextValue::CharLiteral('"')))
.context(StrContext::Expected(StrContextValue::CharLiteral('\'')))
},
b'f' => {
crate::parser::numbers::false_.map(v::Value::from)
.context(StrContext::Label("string"))
.context(StrContext::Expected(StrContextValue::CharLiteral('"')))
.context(StrContext::Expected(StrContextValue::CharLiteral('\'')))
},
b'i' => {
crate::parser::numbers::inf.map(v::Value::from)
.context(StrContext::Label("string"))
.context(StrContext::Expected(StrContextValue::CharLiteral('"')))
.context(StrContext::Expected(StrContextValue::CharLiteral('\'')))
},
b'n' => {
crate::parser::numbers::nan.map(v::Value::from)
.context(StrContext::Label("string"))
.context(StrContext::Expected(StrContextValue::CharLiteral('"')))
.context(StrContext::Expected(StrContextValue::CharLiteral('\'')))
},
_ => {
fail
.context(StrContext::Label("string"))
.context(StrContext::Expected(StrContextValue::CharLiteral('"')))
.context(StrContext::Expected(StrContextValue::CharLiteral('\'')))
},
}
.with_span()
.try_map(|(value, span)| apply_raw(value, span))
.parse_next(input)
}
}
fn apply_raw(mut val: Value, span: std::ops::Range<usize>) -> Result<Value, std::str::Utf8Error> {
match val {
Value::String(ref mut f) => {
let raw = RawString::with_span(span);
f.set_repr_unchecked(Repr::new_unchecked(raw));
}
Value::Integer(ref mut f) => {
let raw = RawString::with_span(span);
f.set_repr_unchecked(Repr::new_unchecked(raw));
}
Value::Float(ref mut f) => {
let raw = RawString::with_span(span);
f.set_repr_unchecked(Repr::new_unchecked(raw));
}
Value::Boolean(ref mut f) => {
let raw = RawString::with_span(span);
f.set_repr_unchecked(Repr::new_unchecked(raw));
}
Value::Datetime(ref mut f) => {
let raw = RawString::with_span(span);
f.set_repr_unchecked(Repr::new_unchecked(raw));
}
Value::Array(ref mut arr) => {
arr.span = Some(span);
}
Value::InlineTable(ref mut table) => {
table.span = Some(span);
}
};
val.decorate("", "");
Ok(val)
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn values() {
let inputs = [
"1979-05-27T00:32:00.999999",
"-239",
"1e200",
"9_224_617.445_991_228_313",
r#"'''I [dw]on't need \d{2} apples'''"#,
r#"'''
The first newline is
trimmed in raw strings.
All other whitespace
is preserved.
'''"#,
r#""Jos\u00E9\n""#,
r#""\\\"\b/\f\n\r\t\u00E9\U000A0000""#,
r#"{ hello = "world", a = 1}"#,
r#"[ { x = 1, a = "2" }, {a = "a",b = "b", c = "c"} ]"#,
];
for input in inputs {
dbg!(input);
let mut parsed = value(Default::default()).parse(new_input(input));
if let Ok(parsed) = &mut parsed {
parsed.despan(input);
}
assert_eq!(parsed.map(|a| a.to_string()), Ok(input.to_owned()));
}
}
}
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