mirror of https://github.com/zkat/miette.git
55 lines
1.7 KiB
Rust
55 lines
1.7 KiB
Rust
use crate::{MietteError, MietteSpanContents, SourceCode, SpanContents};
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/// Utility struct for when you have a regular [Source] type, such as a String,
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/// that doesn't implement `name`, or if you want to override the `.name()`
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/// returned by the `Source`.
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pub struct NamedSource {
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source: Box<dyn SourceCode + 'static>,
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name: String,
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}
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impl std::fmt::Debug for NamedSource {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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f.debug_struct("NamedSource")
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.field("name", &self.name)
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.field("source", &"<redacted>");
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Ok(())
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}
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}
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impl NamedSource {
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/// Create a new [NamedSource] using a regular [SourceCode] and giving its returned [SpanContents] a name.
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pub fn new(name: impl AsRef<str>, source: impl SourceCode + Send + Sync + 'static) -> Self {
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Self {
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source: Box::new(source),
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name: name.as_ref().to_string(),
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}
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}
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/// Returns a reference the inner [SourceCode] type for this [NamedSource].
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pub fn inner(&self) -> &(dyn SourceCode + 'static) {
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&*self.source
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}
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}
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impl SourceCode for NamedSource {
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fn read_span<'a>(
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&'a self,
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span: &crate::SourceSpan,
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context_lines_before: usize,
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context_lines_after: usize,
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) -> Result<Box<dyn SpanContents<'a> + 'a>, MietteError> {
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let contents = self
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.inner()
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.read_span(span, context_lines_before, context_lines_after)?;
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Ok(Box::new(MietteSpanContents::new_named(
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self.name.clone(),
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contents.data(),
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contents.span().clone(),
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contents.line(),
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contents.column(),
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contents.line_count(),
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)))
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}
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}
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