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///! These are the structures emitted by the compiler as part of JSON errors.
///! The original source can be found at
///! https://github.com/rust-lang/rust/blob/master/src/librustc_errors/json.rs
use std::path::PathBuf;
#[cfg(feature = "derive")]
use serde::Deserialize;
use crate::{Column, OneIndexed, Row, Span};
#[cfg_attr(feature = "derive", derive(Deserialize))]
#[cfg_attr(feature = "serialize-rustc", derive(RustcDecodable))]
#[derive(Debug, Clone)]
pub struct DiagnosticSpan {
pub file_name: String,
pub byte_start: u32,
pub byte_end: u32,
/// 1-based.
pub line_start: usize,
pub line_end: usize,
/// 1-based, character offset.
pub column_start: usize,
pub column_end: usize,
/// Is this a "primary" span -- meaning the point, or one of the points,
/// where the error occurred?
pub is_primary: bool,
/// Source text from the start of line_start to the end of line_end.
pub text: Vec<DiagnosticSpanLine>,
/// Label that should be placed at this location (if any)
pub label: Option<String>,
/// If we are suggesting a replacement, this will contain text
/// that should be sliced in atop this span. You may prefer to
/// load the fully rendered version from the parent `Diagnostic`,
/// however.
pub suggested_replacement: Option<String>,
/// Macro invocations that created the code at this span, if any.
pub expansion: Option<Box<DiagnosticSpanMacroExpansion>>,
}
impl DiagnosticSpan {
pub fn rls_span(&self) -> Span<OneIndexed> {
Span::new(
Row::new(self.line_start as u32),
Row::new(self.line_end as u32),
Column::new(self.column_start as u32),
Column::new(self.column_end as u32),
PathBuf::from(&self.file_name),
)
}
}
#[cfg_attr(feature = "derive", derive(Deserialize))]
#[cfg_attr(feature = "serialize-rustc", derive(RustcDecodable))]
#[derive(Debug, Clone)]
pub struct DiagnosticSpanLine {
pub text: String,
/// 1-based, character offset in self.text.
pub highlight_start: usize,
pub highlight_end: usize,
}
#[cfg_attr(feature = "derive", derive(Deserialize))]
#[cfg_attr(feature = "serialize-rustc", derive(RustcDecodable))]
#[derive(Debug, Clone)]
pub struct DiagnosticSpanMacroExpansion {
/// span where macro was applied to generate this code; note that
/// this may itself derive from a macro (if
/// `span.expansion.is_some()`)
pub span: DiagnosticSpan,
/// name of macro that was applied (e.g., "foo!" or "#[derive(Eq)]")
pub macro_decl_name: String,
/// span where macro was defined (if known)
pub def_site_span: Option<DiagnosticSpan>,
}
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