54 lines
1.5 KiB
Rust
54 lines
1.5 KiB
Rust
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use std::collections::HashMap;
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use winnow::{IResult, combinator, character::alphanumeric1, branch, sequence::delimited, multi::many0, bytes::take_until0, Parser};
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use crate::{element::{Element, ElBody, ElContent}, util::ws};
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pub fn el_parser(input: &str) -> IResult<&str, Element> {
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(
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name_parser,
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combinator::opt(el_attrlist_parser),
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el_body_parser,
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)
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.map(|(name, attributes, children)| Element {
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name,
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attributes,
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children,
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})
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.parse_next(input)
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}
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pub fn name_parser(input: &str) -> IResult<&str, &str> {
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ws(alphanumeric1).parse_next(input)
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}
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pub fn el_body_parser(input: &str) -> IResult<&str, ElBody> {
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ws(branch::alt((
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string_parser.map(|s| ElBody::Text(s)),
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delimited('{', many0(content_parser).map(|v| ElBody::Elements(v)), '}'),
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)))
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.parse_next(input)
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}
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pub fn el_attrlist_parser(input: &str) -> IResult<&str, HashMap<&str, &str>> {
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ws(delimited('[', many0(attribute_parser), ']')).parse_next(input)
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}
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pub fn attribute_parser(input: &str) -> IResult<&str, (&str, &str)> {
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(name_parser, '=', ws(string_parser))
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.map(|(key, _, value)| (key, value))
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.parse_next(input)
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}
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pub fn content_parser(input: &str) -> IResult<&str, ElContent> {
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ws(branch::alt((
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string_parser.map(|s| ElContent::Text(s)),
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el_parser.map(|e| ElContent::El(e)),
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)))
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.parse_next(input)
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}
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pub fn string_parser(input: &str) -> IResult<&str, &str> {
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delimited('"', take_until0("\""), '"').parse_next(input)
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}
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