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use mathml_macros::*;
use quick_xml::events::Event;
use quick_xml::Reader;
use std::fs::File;
use std::io::BufReader;
pub mod structs;
pub use structs::apply::*;
pub use structs::bindings::*;
pub use structs::ci::*;
pub use structs::cn::*;
pub use structs::constants::*;
pub use structs::lambda::*;
pub use structs::math_node::*;
pub use structs::numbers::*;
pub use structs::op::*;
pub use structs::piecewise::*;
pub use structs::root::*;
pub mod methods;
pub use methods::evaluate::*;
pub fn parse_fragment(
mut reader: Reader<BufReader<File>>,
) -> (Vec<MathNode>, Reader<BufReader<File>>) {
reader.trim_text(true);
reader.expand_empty_elements(true);
let mut buf = Vec::new();
let mut stack: Vec<NodeIndex> = Vec::new();
let mut container = Vec::new();
let mut container_len = 0;
container.push(MathNode::default());
container_len += 1;
let mut current = 0;
stack.push(current);
loop {
match reader.read_event(&mut buf) {
Ok(Event::Start(ref e)) => {
let new_tag;
match e.name() {
b"apply" => attach![Apply to Root | Apply | Lambda | Piece | Otherwise],
b"times" => attach![Op::Times to Apply],
b"divide" => attach![Op::Divide to Apply],
b"minus" => attach![Op::Minus to Apply],
b"plus" => attach![Op::Plus to Apply],
b"power" => attach![Op::Power to Apply],
b"factorial" => attach![Op::Factorial to Apply],
b"eq" => attach![Op::Eq to Apply],
b"neq" => attach![Op::Neq to Apply],
b"gt" => attach![Op::Gt to Apply],
b"lt" => attach![Op::Lt to Apply],
b"geq" => attach![Op::Geq to Apply],
b"leq" => attach![Op::Leq to Apply],
b"and" => attach![Op::And to Apply],
b"or" => attach![Op::Or to Apply],
b"xor" => attach![Op::Xor to Apply],
b"ceiling" => attach![Op::Ceiling to Apply],
b"floor" => attach![Op::Floor to Apply],
b"true" => attach![Constant::True to Apply | Piece ],
b"false" => attach![Constant::False to Apply | Piece ],
b"ci" => attach![Ci to Root | Apply | BVar | Piece | Otherwise | Lambda ],
b"cn" => attach![Cn with
r#type as NumType,
to Root | Apply | BVar | Piece | Otherwise | Lambda ],
b"lambda" => attach![Lambda to Root],
b"bvar" => attach![BVar to Lambda],
b"piecewise" => attach![Piecewise to Root | Apply | Lambda],
b"piece" => attach![Piece to Piecewise],
b"otherwise" => attach![Otherwise to Piecewise],
b"sep" => new_tag = None,
_ => {
panic!("Tag not parsed: {}", std::str::from_utf8(e.name()).unwrap());
}
}
if let Some(t) = new_tag {
container.push(t);
container_len += 1;
}
}
Ok(Event::End(ref e)) => match e.name() {
b"apply" => close![Apply],
b"times" => close![Op],
b"divide" => close![Op],
b"minus" => close![Op],
b"plus" => close![Op],
b"power" => close![Op],
b"factorial" => close![Op],
b"eq" => close![Op],
b"neq" => close![Op],
b"geq" => close![Op],
b"leq" => close![Op],
b"gt" => close![Op],
b"lt" => close![Op],
b"and" => close![Op],
b"or" => close![Op],
b"xor" => close![Op],
b"ceiling" => close![Op],
b"floor" => close![Op],
b"piecewise" => close![Piecewise],
b"piece" => close![Piece],
b"otherwise" => close![Otherwise],
b"true" => close![Constant],
b"false" => close![Constant],
b"ci" => close![Ci],
b"cn" => close![Cn],
b"lambda" => close![Lambda],
b"bvar" => close![BVar],
b"math" => break,
_ => {}
},
Ok(Event::Text(e)) => {
let s = e.unescape_and_decode(&reader).unwrap();
match container[current] {
MathNode::Ci(..) => {
container[current] = MathNode::Ci(Ci::with_name(s));
}
MathNode::Cn(ref mut cn) => match cn.r#type {
Some(NumType::Real) | None => {
let value = s.parse::<f64>().expect("Incorrect type");
cn.value = Some(Number::Real(value));
}
Some(NumType::Integer) => {
let value = s.parse::<i32>().expect("Incorrect type");
cn.value = Some(Number::Integer(value));
}
Some(NumType::Rational) => {
let value = s.parse::<i32>().expect("Incorrect type");
if cn.value.is_none() {
cn.value = Some(Number::Rational(value.into(), 1));
} else if let Some(Number::Rational(x, y)) = cn.value {
if y != 1 {
panic!("Error occurred while storing rational number.");
}
cn.value = Some(Number::Rational(x, value.into()));
}
}
Some(NumType::ENotation) => {
let value = s.parse::<i32>().expect("Incorrect type");
if cn.value.is_none() {
cn.value = Some(Number::ENotation(value.into(), 1));
} else if let Some(Number::ENotation(x, y)) = cn.value {
if y != 1 {
panic!("Error occurred while storing rational number.");
}
cn.value = Some(Number::ENotation(x, value.into()));
}
}
_ => {
panic!("Math type did not match for cn: {:?}", cn);
}
},
_ => {
panic!("Text not parsed in {:?}: {}", container[current], s);
}
}
}
Ok(Event::Eof) => break,
Err(e) => panic!("Error at position {}: {:?}", reader.buffer_position(), e),
_ => (),
}
}
(container, reader)
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn it_works() {
let filename = "../../testsuites/core-semantic/00004/00004-sbml-l3v2.xml";
let reader = Reader::from_file(filename).expect("File error.");
parse_fragment(reader);
}
}