compiler/rustc_query_system/src/error.rs

   1 use rustc_errors::AddSubdiagnostic;
   2 use rustc_span::Span;
   3
   4 pub struct CycleStack {
   5     pub span: Span,
   6     pub desc: String,
   7 }
   8
   9 impl AddSubdiagnostic for CycleStack {
  10     fn add_to_diagnostic(self, diag: &mut rustc_errors::Diagnostic) {
  11         diag.span_note(self.span, &format!("...which requires {}...", self.desc));
  12     }
  13 }
  14
  15 #[derive(Copy, Clone)]
  16 pub enum HandleCycleError {
  17     Error,
  18     Fatal,
  19     DelayBug,
  20 }
  21
  22 #[derive(SessionSubdiagnostic)]
  23 pub enum StackCount {
  24     #[note(query_system::cycle_stack_single)]
  25     Single,
  26     #[note(query_system::cycle_stack_multiple)]
  27     Multiple,
  28 }
  29
  30 #[derive(SessionSubdiagnostic)]
  31 pub enum Alias {
  32     #[note(query_system::cycle_recursive_ty_alias)]
  33     #[help(query_system::cycle_recursive_ty_alias_help1)]
  34     #[help(query_system::cycle_recursive_ty_alias_help2)]
  35     Ty,
  36     #[note(query_system::cycle_recursive_trait_alias)]
  37     Trait,
  38 }
  39
  40 #[derive(SessionSubdiagnostic)]
  41 #[note(query_system::cycle_usage)]
  42 pub struct CycleUsage {
  43     #[primary_span]
  44     pub span: Span,
  45     pub usage: String,
  46 }
  47
  48 #[derive(SessionDiagnostic)]
  49 #[diag(query_system::cycle, code = "E0391")]
  50 pub struct Cycle {
  51     #[primary_span]
  52     pub span: Span,
  53     pub stack_bottom: String,
  54     #[subdiagnostic]
  55     pub cycle_stack: Vec<CycleStack>,
  56     #[subdiagnostic]
  57     pub stack_count: StackCount,
  58     #[subdiagnostic]
  59     pub alias: Option<Alias>,
  60     #[subdiagnostic]
  61     pub cycle_usage: Option<CycleUsage>,
  62 }
  63
  64 #[derive(SessionDiagnostic)]
  65 #[diag(query_system::reentrant)]
  66 pub struct Reentrant;
  67
  68 #[derive(SessionDiagnostic)]
  69 #[diag(query_system::increment_compilation)]
  70 #[help]
  71 #[note(query_system::increment_compilation_note1)]
  72 #[note(query_system::increment_compilation_note2)]
  73 pub struct IncrementCompilation {
  74     pub run_cmd: String,
  75     pub dep_node: String,
  76 }
  77
  78 #[derive(SessionDiagnostic)]
  79 #[diag(query_system::query_overflow)]
  80 pub struct QueryOverflow;