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Diffstat (limited to 'tests/test_utils/micromark_swc_utils.rs')
-rw-r--r-- | tests/test_utils/micromark_swc_utils.rs | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/tests/test_utils/micromark_swc_utils.rs b/tests/test_utils/micromark_swc_utils.rs deleted file mode 100644 index 13678d5..0000000 --- a/tests/test_utils/micromark_swc_utils.rs +++ /dev/null @@ -1,134 +0,0 @@ -extern crate swc_common; -use micromark::{ - mdast::Stop, - unist::{Point, Position}, - Location, -}; -use swc_common::{BytePos, Span, SyntaxContext, DUMMY_SP}; -use swc_ecma_visit::{noop_visit_mut_type, VisitMut}; - -/// Turn a unist position, into an SWC span, of two byte positions. -/// -/// > 👉 **Note**: SWC byte positions are offset by one: they are `0` when they -/// > are missing or incremented by `1` when valid. -pub fn position_to_span(position: Option<&Position>) -> Span { - position.map_or(DUMMY_SP, |d| Span { - lo: point_to_bytepos(&d.start), - hi: point_to_bytepos(&d.end), - ctxt: SyntaxContext::empty(), - }) -} - -/// Turn an SWC span, of two byte positions, into a unist position. -/// -/// This assumes the span comes from a fixed tree, or is a dummy. -/// -/// > 👉 **Note**: SWC byte positions are offset by one: they are `0` when they -/// > are missing or incremented by `1` when valid. -pub fn span_to_position(span: &Span, location: Option<&Location>) -> Option<Position> { - let lo = span.lo.0 as usize; - let hi = span.hi.0 as usize; - - if lo > 0 && hi > 0 { - if let Some(location) = location { - if let Some(start) = location.to_point(lo - 1) { - if let Some(end) = location.to_point(hi - 1) { - return Some(Position { start, end }); - } - } - } - } - - None -} - -/// Turn a unist point into an SWC byte position. -/// -/// > 👉 **Note**: SWC byte positions are offset by one: they are `0` when they -/// > are missing or incremented by `1` when valid. -pub fn point_to_bytepos(point: &Point) -> BytePos { - BytePos(point.offset as u32 + 1) -} - -/// Turn an SWC byte position into a unist point. -/// -/// This assumes the byte position comes from a fixed tree, or is a dummy. -/// -/// > 👉 **Note**: SWC byte positions are offset by one: they are `0` when they -/// > are missing or incremented by `1` when valid. -pub fn bytepos_to_point(bytepos: &BytePos, location: Option<&Location>) -> Option<Point> { - let pos = bytepos.0 as usize; - - if pos > 0 { - if let Some(location) = location { - return location.to_point(pos - 1); - } - } - - None -} - -/// Prefix an error message with an optional point. -pub fn prefix_error_with_point(reason: String, point: Option<&Point>) -> String { - if let Some(point) = point { - format!("{}: {}", point_to_string(point), reason) - } else { - reason - } -} - -/// Serialize a unist position for humans. -pub fn position_to_string(position: &Position) -> String { - format!( - "{}-{}", - point_to_string(&position.start), - point_to_string(&position.end) - ) -} - -/// Serialize a unist point for humans. -pub fn point_to_string(point: &Point) -> String { - format!("{}:{}", point.line, point.column) -} - -/// Visitor to fix SWC byte positions. -/// -/// This assumes the byte position comes from an **unfixed** tree. -/// -/// > 👉 **Note**: SWC byte positions are offset by one: they are `0` when they -/// > are missing or incremented by `1` when valid. -#[derive(Debug, Default, Clone)] -pub struct RewriteContext<'a> { - pub prefix_len: usize, - pub stops: &'a [Stop], - pub location: Option<&'a Location>, -} - -impl<'a> VisitMut for RewriteContext<'a> { - noop_visit_mut_type!(); - - // Rewrite spans. - fn visit_mut_span(&mut self, span: &mut Span) { - let mut result = DUMMY_SP; - let lo_rel = span.lo.0 as usize; - let hi_rel = span.hi.0 as usize; - - if lo_rel > self.prefix_len && hi_rel > self.prefix_len { - if let Some(lo_abs) = - Location::relative_to_absolute(self.stops, lo_rel - 1 - self.prefix_len) - { - if let Some(hi_abs) = - Location::relative_to_absolute(self.stops, hi_rel - 1 - self.prefix_len) - { - result = Span { - lo: BytePos(lo_abs as u32 + 1), - hi: BytePos(hi_abs as u32 + 1), - ctxt: SyntaxContext::empty(), - }; - } - } - } - - *span = result; - } -} |