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//! Rustc Diagnostic JSON Output
//!
//! The following data types are copied from [rust-lang/rust](https://github.com/rust-lang/rust/blob/de78655bca47cac8e783dbb563e7e5c25c1fae40/src/libsyntax/json.rs)
use serde::Deserialize;
#[derive(Clone, Deserialize, Debug, Hash, Eq, PartialEq)]
pub struct Diagnostic {
/// The primary error message.
pub message: String,
pub code: Option<DiagnosticCode>,
/// "error: internal compiler error", "error", "warning", "note", "help".
level: String,
pub spans: Vec<DiagnosticSpan>,
/// Associated diagnostic messages.
pub children: Vec<Diagnostic>,
/// The message as rustc would render it. Currently this is only
/// `Some` for "suggestions", but eventually it will include all
/// snippets.
pub rendered: Option<String>,
}
#[derive(Clone, Deserialize, Debug, Hash, Eq, PartialEq)]
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)
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>,
pub suggestion_applicability: Option<Applicability>,
/// Macro invocations that created the code at this span, if any.
expansion: Option<Box<DiagnosticSpanMacroExpansion>>,
}
#[derive(Copy, Clone, Debug, PartialEq, Deserialize, Hash, Eq)]
pub enum Applicability {
MachineApplicable,
HasPlaceholders,
MaybeIncorrect,
Unspecified,
}
#[derive(Clone, Deserialize, Debug, Eq, PartialEq, Hash)]
pub struct DiagnosticSpanLine {
pub text: String,
/// 1-based, character offset in self.text.
pub highlight_start: usize,
pub highlight_end: usize,
}
#[derive(Clone, Deserialize, Debug, Eq, PartialEq, Hash)]
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()`)
span: DiagnosticSpan,
/// name of macro that was applied (e.g., "foo!" or "#[derive(Eq)]")
macro_decl_name: String,
/// span where macro was defined (if known)
def_site_span: Option<DiagnosticSpan>,
}
#[derive(Clone, Deserialize, Debug, Eq, PartialEq, Hash)]
pub struct DiagnosticCode {
/// The code itself.
pub code: String,
/// An explanation for the code.
explanation: Option<String>,
}
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