61 lines
2.1 KiB
Rust
61 lines
2.1 KiB
Rust
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use crate::parser::parser_with_context::parser_with_context;
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use super::combinator::context_many_till;
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use super::error::CustomError;
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use super::error::MyError;
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use super::parser_context::ChainBehavior;
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use super::parser_context::ContextElement;
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use super::parser_context::ExitMatcherNode;
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use super::text::symbol;
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use super::text::Link;
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use super::text::Res;
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use super::text::TextElement;
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use super::text_element_parser::_in_section;
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use super::text_element_parser::flat_text_element;
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use super::Context;
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use nom::combinator::map;
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use nom::combinator::recognize;
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use nom::sequence::tuple;
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pub fn flat_link<'s, 'r>(context: Context<'r, 's>, i: &'s str) -> Res<&'s str, Link<'s>> {
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let link_start = parser_with_context!(context_link_start)(&context);
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let parser_context = context
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.with_additional_node(ContextElement::ExitMatcherNode(ExitMatcherNode {
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exit_matcher: ChainBehavior::AndParent(Some(&context_link_end)),
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}))
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.with_additional_node(ContextElement::Context("link"));
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let (remaining, captured) = recognize(tuple((link_start, |i| {
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context_many_till(&parser_context, flat_text_element, context_link_end)(i)
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})))(i)?;
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let ret = Link { contents: captured };
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Ok((remaining, ret))
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}
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fn can_start_link<'s, 'r>(context: Context<'r, 's>) -> bool {
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!_in_section(context, "link")
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}
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fn context_link_start<'s, 'r>(context: Context<'r, 's>, input: &'s str) -> Res<&'s str, &'s str> {
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if can_start_link(context) {
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recognize(link_start)(input)
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} else {
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// TODO: Make this a specific error instead of just a generic MyError
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return Err(nom::Err::Error(CustomError::MyError(MyError(
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"Cannot start link",
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))));
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}
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}
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fn context_link_end<'s, 'r>(context: Context<'r, 's>, input: &'s str) -> Res<&'s str, &'s str> {
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let (remaining, actual_match) = recognize(link_end)(input)?;
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Ok((remaining, actual_match))
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}
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fn link_start(input: &str) -> Res<&str, TextElement> {
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map(symbol("["), TextElement::Symbol)(input)
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}
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fn link_end(input: &str) -> Res<&str, TextElement> {
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map(symbol("]"), TextElement::Symbol)(input)
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}
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