finitio 0.1.0

Finitio data language
Documentation 
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use super::{Type};
use crate::common::FilePosition;
use crate::fio::common::Span;
use nom::multi::{separated_list1};
use nom::{bytes::complete::tag, combinator::map, sequence::delimited, IResult};
use serde::{Serialize, Deserialize};
use super::common::ws;
use super::r#type::{parse_type};

#[derive(Debug, PartialEq, Serialize, Deserialize, Clone)]
pub struct StructType {
    pub elements: Vec<Type>,
    pub position: FilePosition,
}

pub fn parse_struct(input: Span) -> IResult<Span, StructType> {
    let elms = separated_list1(delimited(ws, tag(","), ws), delimited(ws, parse_type, ws));
    let parser = delimited(tag("<"), elms, tag(">"));
    map(parser, |elements| StructType {
        elements,
        position: input.into(),
    })(input)
}

#[cfg(test)]
use super::{nil::NilType, r#ref::RefType, union::UnionType};
#[cfg(test)]
use crate::fio::common::assert_parse;

#[test]
fn test_parse_struct_simple() {
    assert_parse(
        parse_struct(Span::new("<Nil>")),
        StructType {
            elements: vec![Type::NilType(NilType {
                position: FilePosition { line: 1, column: 2 },
            })],
            position: FilePosition { line: 1, column: 1 },
        },
    );
}

#[test]
fn test_parse_struct_duo() {
    assert_parse(
        parse_struct(Span::new("<Nil, Number>")),
        StructType {
            elements: vec![
                Type::NilType(NilType {
                    position: FilePosition { line: 1, column: 2 },
                }),
                Type::RefType(RefType {
                    name: "Number".to_string(),
                    position: FilePosition { line: 1, column: 7 },
                }),
            ],
            position: FilePosition { line: 1, column: 1 },
        },
    );
}

#[test]
fn test_parse_struct_spacing() {
    ///// Spacing
    assert_parse(
        parse_struct(Span::new("< Nil ,\n Number >")),
        StructType {
            elements: vec![
                Type::NilType(NilType {
                    position: FilePosition { line: 1, column: 3 },
                }),
                Type::RefType(RefType {
                    name: "Number".to_string(),
                    position: FilePosition { line: 2, column: 2 },
                }),
            ],
            position: FilePosition { line: 1, column: 1 },
        },
    );
}

#[test]
fn test_parse_struct_complex() {
    ///// With complex type
    assert_parse(
        parse_struct(Span::new("< Nil | Number, String>")),
        StructType {
            elements: vec![
                Type::UnionType(UnionType {
                    candidates: vec![
                        Type::NilType(NilType {
                            position: FilePosition { line: 1, column: 3 },
                        }),
                        Type::RefType(RefType {
                            name: "Number".to_string(),
                            position: FilePosition { line: 1, column: 9 },
                        }),
                    ],
                    position: FilePosition { line: 1, column: 3 },
                }),
                Type::RefType(RefType {
                    name: "String".to_string(),
                    position: FilePosition {
                        line: 1,
                        column: 17,
                    },
                }),
            ],
            position: FilePosition { line: 1, column: 1 },
        },
    );
}