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#[derive(Parser)]
#[grammar = "grammar.pest"]
pub struct MarinParser;
#[cfg(test)]
mod tests {
use std::fmt;
use pest::Parser;
use pest::parses_to;
use crate::parser::MarinParser;
use crate::parser::Rule;
struct ParsesToDisplay<'i, R: pest::RuleType>(pest::iterators::Pair<'i, R>);
impl<'i, R: pest::RuleType> fmt::Display for ParsesToDisplay<'i, R> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
self.display(f, 0)
}
}
impl<'i, R: pest::RuleType> ParsesToDisplay<'i, R> {
fn display(&self, f: &mut fmt::Formatter, depth: usize) -> fmt::Result {
let span = self.0.clone().as_span();
let rule = self.0.as_rule();
let inner = self.0.clone().into_inner();
let indent = " ".repeat(depth + 4);
let children_possible = if let Some(len) = inner.size_hint().1 {
len > 0
} else {
true
};
write!(f, "{}{:?}({}, {}", indent, rule, span.start_pos().pos(), span.end_pos().pos())?;
if children_possible {
writeln!(f, ", [")?;
for pair in self.0.clone().into_inner() {
ParsesToDisplay(pair).display(f, depth + 1)?;
}
write!(f, "{}]),", indent)?;
} else {
write!(f, ")")?;
}
if depth > 0 {
writeln!(f)?;
}
Ok(())
}
}
#[test]
fn positional_ints() {
parses_to! {
parser: MarinParser,
input: "1 2 -3 -3.5",
rule: Rule::Marin,
tokens: [
Marin(0, 11, [
Value(0, 1, [
Int(0, 1, []),
]),
Value(2, 3, [
Int(2, 3, []),
]),
Value(4, 6, [
Int(4, 6, []),
]),
Value(7, 11, [
Float(7, 11, []),
]),
EOI(11, 11, []),
]),
]
};
}
#[test]
fn positional_strings() {
parses_to! {
parser: MarinParser,
input: "arg1 arg2 arg3 4arg",
rule: Rule::Marin,
tokens: [
Marin(0, 19, [
Value(0, 4, [
String(0, 4, [
Bareword(0, 4, []),
]),
]),
Value(5, 9, [
String(5, 9, [
Bareword(5, 9, []),
]),
]),
Value(10, 14, [
String(10, 14, [
Bareword(10, 14, []),
]),
]),
Value(15, 19, [
String(15, 19, [
Bareword(15, 19, []),
]),
]),
EOI(19, 19, []),
]),
]
};
}
#[test]
fn keyword_arguments() {
parses_to! {
parser: MarinParser,
input: "kw: 1 kwargs: True",
rule: Rule::Marin,
tokens: [
Marin(0, 18, [
Keyword(0, 5, [
String(0, 2, [
Bareword(0, 2, []),
]),
Value(4, 5, [
Int(4, 5, []),
]),
]),
Keyword(6, 18, [
String(6, 12, [
Bareword(6, 12, []),
]),
Value(14, 18, [
Bool(14, 18, []),
]),
]),
EOI(18, 18, []),
]),
]
};
}
#[test]
fn flags() {
parses_to! {
parser: MarinParser,
input: "-flag1 -flag2",
rule: Rule::Marin,
tokens: [
Marin(0, 13, [
Flag(0, 6, [
FlagInner(1, 6, []),
]),
Flag(7, 13, [
FlagInner(8, 13, []),
]),
EOI(13, 13, []),
]),
]
};
}
#[test]
fn keyword_arguments_strings() {
parses_to! {
parser: MarinParser,
input: "kw: \"String with spaces\"",
rule: Rule::Marin,
tokens: [
Marin(0, 24, [
Keyword(0, 24, [
String(0, 2, [
Bareword(0, 2, []),
]),
Value(4, 24, [
String(4, 24, [
Inner(5, 23, []),
]),
]),
]),
EOI(24, 24, []),
]),
]
};
}
#[test]
fn lists() {
parses_to! {
parser: MarinParser,
input: "vals: [1, 2, 3] [1,2,3]",
rule: Rule::Marin,
tokens: [
Marin(0, 23, [
Keyword(0, 15, [
String(0, 4, [
Bareword(0, 4, []),
]),
Value(6, 15, [
List(6, 15, [
Value(7, 8, [
Int(7, 8, []),
]),
Value(10, 11, [
Int(10, 11, []),
]),
Value(13, 14, [
Int(13, 14, []),
]),
]),
]),
]),
Value(16, 23, [
List(16, 23, [
Value(17, 18, [
Int(17, 18, []),
]),
Value(19, 20, [
Int(19, 20, []),
]),
Value(21, 22, [
Int(21, 22, []),
]),
]),
]),
EOI(23, 23, []),
]),
]
};
}
#[test]
fn ranges() {
parses_to! {
parser: MarinParser,
input: "range: 1..10 -5..15 ..10",
rule: Rule::Marin,
tokens: [
Marin(0, 24, [
Keyword(0, 12, [
String(0, 5, [
Bareword(0, 5, [
]),
]),
Value(7, 12, [
RangeExpr(7, 12, [
Range(7, 12, [
Number(7, 8, []),
Number(10, 12, []),
]),
]),
]),
]),
Value(13, 19, [
RangeExpr(13, 19, [
Range(13, 19, [
Number(13, 15, []),
Number(17, 19, []),
]),
]),
]),
Value(20, 24, [
RangeExpr(20, 24, [
RangeTo(20, 24, [
Number(22, 24, []),
]),
]),
]),
EOI(24, 24, []),
]),
]
};
}
}