diff options
Diffstat (limited to 'src/parser/value.rs')
| -rw-r--r-- | src/parser/value.rs | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/src/parser/value.rs b/src/parser/value.rs new file mode 100644 index 0000000..14cd951 --- /dev/null +++ b/src/parser/value.rs @@ -0,0 +1,155 @@ +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())); + } + } +} |