diff --git a/src/parser/bold.rs b/src/parser/bold.rs new file mode 100644 index 0000000..c2145af --- /dev/null +++ b/src/parser/bold.rs @@ -0,0 +1,75 @@ +use crate::parser::parser_with_context::parser_with_context; + +use super::combinator::context_many_till; +use super::error::CustomError; +use super::error::MyError; +use super::parser_context::ChainBehavior; +use super::parser_context::ContextElement; +use super::parser_context::ExitMatcherNode; +use super::text::symbol; +use super::text::Bold; +use super::text::Res; +use super::text::TextElement; +use super::text_element_parser::_in_section; +use super::text_element_parser::_preceded_by_whitespace; +use super::text_element_parser::flat_text_element; +use super::Context; +use nom::branch::alt; +use nom::bytes::complete::tag; +use nom::combinator::map; +use nom::combinator::peek; +use nom::combinator::recognize; +use nom::sequence::tuple; + +pub fn flat_bold<'s, 'r>(context: Context<'r, 's>, i: &'s str) -> Res<&'s str, Bold<'s>> { + let bold_start = parser_with_context!(context_bold_start)(&context); + let parser_context = context + .with_additional_node(ContextElement::ExitMatcherNode(ExitMatcherNode { + exit_matcher: ChainBehavior::AndParent(Some(&context_bold_end)), + })) + .with_additional_node(ContextElement::Context("bold")); + let (remaining, captured) = recognize(tuple((bold_start, |i| { + context_many_till(&parser_context, flat_text_element, context_bold_end)(i) + })))(i)?; + let ret = Bold { contents: captured }; + Ok((remaining, ret)) +} + +fn can_start_bold<'s, 'r>(context: Context<'r, 's>) -> bool { + _preceded_by_whitespace(context) && !_in_section(context, "bold") +} + +pub fn context_bold_start<'s, 'r>( + context: Context<'r, 's>, + input: &'s str, +) -> Res<&'s str, &'s str> { + if can_start_bold(context) { + recognize(bold_start)(input) + } else { + // TODO: Make this a specific error instead of just a generic MyError + return Err(nom::Err::Error(CustomError::MyError(MyError( + "Cannot start bold", + )))); + } +} + +pub fn context_bold_end<'s, 'r>(context: Context<'r, 's>, input: &'s str) -> Res<&'s str, &'s str> { + let (remaining, actual_match) = recognize(bold_end)(input)?; + peek(alt(( + // Must have whitespace after the end asterisk or it must be the end of that section (as checked by the exit matcher) + tag(" "), + tag("\t"), + tag("\n"), + |i| context.check_exit_matcher(i), + )))(remaining)?; + + Ok((remaining, actual_match)) +} + +pub fn bold_start(input: &str) -> Res<&str, TextElement> { + map(symbol("*"), TextElement::Symbol)(input) +} + +pub fn bold_end(input: &str) -> Res<&str, TextElement> { + map(symbol("*"), TextElement::Symbol)(input) +} diff --git a/src/parser/mod.rs b/src/parser/mod.rs index 937972d..515aed6 100644 --- a/src/parser/mod.rs +++ b/src/parser/mod.rs @@ -1,3 +1,4 @@ +mod bold; mod combinator; mod error; mod list; diff --git a/src/parser/text.rs b/src/parser/text.rs index b1fc240..3cfaceb 100644 --- a/src/parser/text.rs +++ b/src/parser/text.rs @@ -100,14 +100,6 @@ fn blank_line(input: &str) -> Res<&str, BlankLine> { )(input) } -pub fn bold_start(input: &str) -> Res<&str, TextElement> { - map(symbol("*"), TextElement::Symbol)(input) -} - -pub fn bold_end(input: &str) -> Res<&str, TextElement> { - map(symbol("*"), TextElement::Symbol)(input) -} - pub fn link_start(input: &str) -> Res<&str, TextElement> { map(symbol("["), TextElement::Symbol)(input) } diff --git a/src/parser/text_element_parser.rs b/src/parser/text_element_parser.rs index 9114c91..52d637e 100644 --- a/src/parser/text_element_parser.rs +++ b/src/parser/text_element_parser.rs @@ -2,6 +2,7 @@ use crate::parser::parser_with_context::parser_with_context; use crate::parser::text::paragraph_end; +use super::bold::flat_bold; use super::combinator::context_many1; use super::combinator::context_many_till; use super::error::CustomError; @@ -10,15 +11,12 @@ use super::parser_context::ChainBehavior; use super::parser_context::ContextElement; use super::parser_context::ContextTree; use super::parser_context::ExitMatcherNode; -use super::text::bold_end; -use super::text::bold_start; use super::text::line_break; use super::text::link_end; use super::text::link_start; use super::text::space; use super::text::span; use super::text::symbol; -use super::text::Bold; use super::text::Link; use super::text::Paragraph; use super::text::Res; @@ -26,11 +24,9 @@ use super::text::TextElement; use super::token::Token; use super::Context; use nom::branch::alt; -use nom::bytes::complete::tag; use nom::combinator::eof; use nom::combinator::map; use nom::combinator::not; -use nom::combinator::peek; use nom::combinator::recognize; use nom::sequence::tuple; use nom::IResult; @@ -57,15 +53,11 @@ pub fn context_paragraph_end<'s, 'r>( paragraph_end(input) } -fn can_start_bold<'s, 'r>(context: Context<'r, 's>) -> bool { - _preceded_by_whitespace(context) && !_in_section(context, "bold") -} - fn can_start_link<'s, 'r>(context: Context<'r, 's>) -> bool { !_in_section(context, "link") } -fn _in_section<'s, 'r, 'x>(context: Context<'r, 's>, section_name: &'x str) -> bool { +pub fn _in_section<'s, 'r, 'x>(context: Context<'r, 's>, section_name: &'x str) -> bool { for thing in context.iter() { match thing.get_data() { ContextElement::ExitMatcherNode(_) => {} @@ -78,7 +70,7 @@ fn _in_section<'s, 'r, 'x>(context: Context<'r, 's>, section_name: &'x str) -> b false } -fn _preceded_by_whitespace<'s, 'r>(context: Context<'r, 's>) -> bool { +pub fn _preceded_by_whitespace<'s, 'r>(context: Context<'r, 's>) -> bool { let mut context_iterator = context.iter().enumerate(); loop { if let Some((i, ctx)) = context_iterator.next() { @@ -111,20 +103,6 @@ fn _preceded_by_whitespace<'s, 'r>(context: Context<'r, 's>) -> bool { false } -pub fn context_bold_start<'s, 'r>( - context: Context<'r, 's>, - input: &'s str, -) -> Res<&'s str, &'s str> { - if can_start_bold(context) { - recognize(bold_start)(input) - } else { - // TODO: Make this a specific error instead of just a generic MyError - return Err(nom::Err::Error(CustomError::MyError(MyError( - "Cannot start bold", - )))); - } -} - pub fn context_link_start<'s, 'r>( context: Context<'r, 's>, input: &'s str, @@ -139,19 +117,6 @@ pub fn context_link_start<'s, 'r>( } } -pub fn context_bold_end<'s, 'r>(context: Context<'r, 's>, input: &'s str) -> Res<&'s str, &'s str> { - let (remaining, actual_match) = recognize(bold_end)(input)?; - peek(alt(( - // Must have whitespace after the end asterisk or it must be the end of that section (as checked by the exit matcher) - tag(" "), - tag("\t"), - tag("\n"), - |i| context.check_exit_matcher(i), - )))(remaining)?; - - Ok((remaining, actual_match)) -} - pub fn context_link_end<'s, 'r>(context: Context<'r, 's>, input: &'s str) -> Res<&'s str, &'s str> { let (remaining, actual_match) = recognize(link_end)(input)?; Ok((remaining, actual_match)) @@ -183,7 +148,7 @@ pub fn paragraph<'s, 'r>(context: Context<'r, 's>, i: &'s str) -> Res<&'s str, P )) } -fn flat_text_element<'s, 'r>( +pub fn flat_text_element<'s, 'r>( context: Context<'r, 's>, i: &'s str, ) -> Res<&'s str, TextElement<'s>> { @@ -204,20 +169,6 @@ fn flat_text_element<'s, 'r>( ))(i) } -fn flat_bold<'s, 'r>(context: Context<'r, 's>, i: &'s str) -> Res<&'s str, Bold<'s>> { - let bold_start = parser_with_context!(context_bold_start)(&context); - let parser_context = context - .with_additional_node(ContextElement::ExitMatcherNode(ExitMatcherNode { - exit_matcher: ChainBehavior::AndParent(Some(&context_bold_end)), - })) - .with_additional_node(ContextElement::Context("bold")); - let (remaining, captured) = recognize(tuple((bold_start, |i| { - context_many_till(&parser_context, flat_text_element, context_bold_end)(i) - })))(i)?; - let ret = Bold { contents: captured }; - Ok((remaining, ret)) -} - fn flat_link<'s, 'r>(context: Context<'r, 's>, i: &'s str) -> Res<&'s str, Link<'s>> { let link_start = parser_with_context!(context_link_start)(&context); let parser_context = context