use std::num::NonZero; use rustc_ast::token; use rustc_ast::util::literal::LitError; use rustc_errors::{ codes::*, Diag, DiagCtxt, DiagnosticMessage, EmissionGuarantee, ErrorGuaranteed, IntoDiagnostic, Level, MultiSpan, }; use rustc_macros::Diagnostic; use rustc_span::{Span, Symbol}; use rustc_target::spec::{SplitDebuginfo, StackProtector, TargetTriple}; use crate::parse::ParseSess; pub struct FeatureGateError { pub span: MultiSpan, pub explain: DiagnosticMessage, } impl<'a, G: EmissionGuarantee> IntoDiagnostic<'a, G> for FeatureGateError { #[track_caller] fn into_diagnostic(self, dcx: &'a DiagCtxt, level: Level) -> Diag<'a, G> { Diag::new(dcx, level, self.explain).with_span(self.span).with_code(E0658) } } #[derive(Subdiagnostic)] #[note(session_feature_diagnostic_for_issue)] pub struct FeatureDiagnosticForIssue { pub n: NonZero, } #[derive(Subdiagnostic)] #[note(session_feature_suggest_upgrade_compiler)] pub struct SuggestUpgradeCompiler { date: &'static str, } impl SuggestUpgradeCompiler { pub fn ui_testing() -> Self { Self { date: "YYYY-MM-DD" } } pub fn new() -> Option { let date = option_env!("CFG_VER_DATE")?; Some(Self { date }) } } #[derive(Subdiagnostic)] #[help(session_feature_diagnostic_help)] pub struct FeatureDiagnosticHelp { pub feature: Symbol, } #[derive(Subdiagnostic)] #[help(session_cli_feature_diagnostic_help)] pub struct CliFeatureDiagnosticHelp { pub feature: Symbol, } #[derive(Diagnostic)] #[diag(session_not_circumvent_feature)] pub struct NotCircumventFeature; #[derive(Diagnostic)] #[diag(session_linker_plugin_lto_windows_not_supported)] pub struct LinkerPluginToWindowsNotSupported; #[derive(Diagnostic)] #[diag(session_profile_use_file_does_not_exist)] pub struct ProfileUseFileDoesNotExist<'a> { pub path: &'a std::path::Path, } #[derive(Diagnostic)] #[diag(session_profile_sample_use_file_does_not_exist)] pub struct ProfileSampleUseFileDoesNotExist<'a> { pub path: &'a std::path::Path, } #[derive(Diagnostic)] #[diag(session_target_requires_unwind_tables)] pub struct TargetRequiresUnwindTables; #[derive(Diagnostic)] #[diag(session_instrumentation_not_supported)] pub struct InstrumentationNotSupported { pub us: String, } #[derive(Diagnostic)] #[diag(session_sanitizer_not_supported)] pub struct SanitizerNotSupported { pub us: String, } #[derive(Diagnostic)] #[diag(session_sanitizers_not_supported)] pub struct SanitizersNotSupported { pub us: String, } #[derive(Diagnostic)] #[diag(session_cannot_mix_and_match_sanitizers)] pub struct CannotMixAndMatchSanitizers { pub first: String, pub second: String, } #[derive(Diagnostic)] #[diag(session_cannot_enable_crt_static_linux)] pub struct CannotEnableCrtStaticLinux; #[derive(Diagnostic)] #[diag(session_sanitizer_cfi_requires_lto)] pub struct SanitizerCfiRequiresLto; #[derive(Diagnostic)] #[diag(session_sanitizer_cfi_requires_single_codegen_unit)] pub struct SanitizerCfiRequiresSingleCodegenUnit; #[derive(Diagnostic)] #[diag(session_sanitizer_cfi_canonical_jump_tables_requires_cfi)] pub struct SanitizerCfiCanonicalJumpTablesRequiresCfi; #[derive(Diagnostic)] #[diag(session_sanitizer_cfi_generalize_pointers_requires_cfi)] pub struct SanitizerCfiGeneralizePointersRequiresCfi; #[derive(Diagnostic)] #[diag(session_sanitizer_cfi_normalize_integers_requires_cfi)] pub struct SanitizerCfiNormalizeIntegersRequiresCfi; #[derive(Diagnostic)] #[diag(session_split_lto_unit_requires_lto)] pub struct SplitLtoUnitRequiresLto; #[derive(Diagnostic)] #[diag(session_unstable_virtual_function_elimination)] pub struct UnstableVirtualFunctionElimination; #[derive(Diagnostic)] #[diag(session_unsupported_dwarf_version)] pub struct UnsupportedDwarfVersion { pub dwarf_version: u32, } #[derive(Diagnostic)] #[diag(session_target_stack_protector_not_supported)] pub struct StackProtectorNotSupportedForTarget<'a> { pub stack_protector: StackProtector, pub target_triple: &'a TargetTriple, } #[derive(Diagnostic)] #[diag(session_branch_protection_requires_aarch64)] pub(crate) struct BranchProtectionRequiresAArch64; #[derive(Diagnostic)] #[diag(session_split_debuginfo_unstable_platform)] pub struct SplitDebugInfoUnstablePlatform { pub debuginfo: SplitDebuginfo, } #[derive(Diagnostic)] #[diag(session_file_is_not_writeable)] pub struct FileIsNotWriteable<'a> { pub file: &'a std::path::Path, } #[derive(Diagnostic)] #[diag(session_file_write_fail)] pub(crate) struct FileWriteFail<'a> { pub path: &'a std::path::Path, pub err: String, } #[derive(Diagnostic)] #[diag(session_crate_name_does_not_match)] pub struct CrateNameDoesNotMatch { #[primary_span] pub span: Span, pub s: Symbol, pub name: Symbol, } #[derive(Diagnostic)] #[diag(session_crate_name_invalid)] pub struct CrateNameInvalid<'a> { pub s: &'a str, } #[derive(Diagnostic)] #[diag(session_crate_name_empty)] pub struct CrateNameEmpty { #[primary_span] pub span: Option, } #[derive(Diagnostic)] #[diag(session_invalid_character_in_create_name)] pub struct InvalidCharacterInCrateName { #[primary_span] pub span: Option, pub character: char, pub crate_name: Symbol, #[subdiagnostic] pub crate_name_help: Option, } #[derive(Subdiagnostic)] pub enum InvalidCrateNameHelp { #[help(session_invalid_character_in_create_name_help)] AddCrateName, } #[derive(Subdiagnostic)] #[multipart_suggestion(session_expr_parentheses_needed, applicability = "machine-applicable")] pub struct ExprParenthesesNeeded { #[suggestion_part(code = "(")] pub left: Span, #[suggestion_part(code = ")")] pub right: Span, } impl ExprParenthesesNeeded { pub fn surrounding(s: Span) -> Self { ExprParenthesesNeeded { left: s.shrink_to_lo(), right: s.shrink_to_hi() } } } #[derive(Diagnostic)] #[diag(session_skipping_const_checks)] pub struct SkippingConstChecks { #[subdiagnostic] pub unleashed_features: Vec, } #[derive(Subdiagnostic)] pub enum UnleashedFeatureHelp { #[help(session_unleashed_feature_help_named)] Named { #[primary_span] span: Span, gate: Symbol, }, #[help(session_unleashed_feature_help_unnamed)] Unnamed { #[primary_span] span: Span, }, } #[derive(Diagnostic)] #[diag(session_invalid_literal_suffix)] pub(crate) struct InvalidLiteralSuffix<'a> { #[primary_span] #[label] pub span: Span, // FIXME(#100717) pub kind: &'a str, pub suffix: Symbol, } #[derive(Diagnostic)] #[diag(session_invalid_int_literal_width)] #[help] pub(crate) struct InvalidIntLiteralWidth { #[primary_span] pub span: Span, pub width: String, } #[derive(Diagnostic)] #[diag(session_invalid_num_literal_base_prefix)] #[note] pub(crate) struct InvalidNumLiteralBasePrefix { #[primary_span] #[suggestion(applicability = "maybe-incorrect", code = "{fixed}")] pub span: Span, pub fixed: String, } #[derive(Diagnostic)] #[diag(session_invalid_num_literal_suffix)] #[help] pub(crate) struct InvalidNumLiteralSuffix { #[primary_span] #[label] pub span: Span, pub suffix: String, } #[derive(Diagnostic)] #[diag(session_invalid_float_literal_width)] #[help] pub(crate) struct InvalidFloatLiteralWidth { #[primary_span] pub span: Span, pub width: String, } #[derive(Diagnostic)] #[diag(session_invalid_float_literal_suffix)] #[help] pub(crate) struct InvalidFloatLiteralSuffix { #[primary_span] #[label] pub span: Span, pub suffix: String, } #[derive(Diagnostic)] #[diag(session_int_literal_too_large)] #[note] pub(crate) struct IntLiteralTooLarge { #[primary_span] pub span: Span, pub limit: String, } #[derive(Diagnostic)] #[diag(session_hexadecimal_float_literal_not_supported)] pub(crate) struct HexadecimalFloatLiteralNotSupported { #[primary_span] #[label(session_not_supported)] pub span: Span, } #[derive(Diagnostic)] #[diag(session_octal_float_literal_not_supported)] pub(crate) struct OctalFloatLiteralNotSupported { #[primary_span] #[label(session_not_supported)] pub span: Span, } #[derive(Diagnostic)] #[diag(session_binary_float_literal_not_supported)] pub(crate) struct BinaryFloatLiteralNotSupported { #[primary_span] #[label(session_not_supported)] pub span: Span, } pub fn report_lit_error( psess: &ParseSess, err: LitError, lit: token::Lit, span: Span, ) -> ErrorGuaranteed { // Checks if `s` looks like i32 or u1234 etc. fn looks_like_width_suffix(first_chars: &[char], s: &str) -> bool { s.len() > 1 && s.starts_with(first_chars) && s[1..].chars().all(|c| c.is_ascii_digit()) } // Try to lowercase the prefix if the prefix and suffix are valid. fn fix_base_capitalisation(prefix: &str, suffix: &str) -> Option { let mut chars = suffix.chars(); let base_char = chars.next().unwrap(); let base = match base_char { 'B' => 2, 'O' => 8, 'X' => 16, _ => return None, }; // check that the suffix contains only base-appropriate characters let valid = prefix == "0" && chars .filter(|c| *c != '_') .take_while(|c| *c != 'i' && *c != 'u') .all(|c| c.to_digit(base).is_some()); valid.then(|| format!("0{}{}", base_char.to_ascii_lowercase(), &suffix[1..])) } let dcx = &psess.dcx; match err { LitError::InvalidSuffix(suffix) => { dcx.emit_err(InvalidLiteralSuffix { span, kind: lit.kind.descr(), suffix }) } LitError::InvalidIntSuffix(suffix) => { let suf = suffix.as_str(); if looks_like_width_suffix(&['i', 'u'], suf) { // If it looks like a width, try to be helpful. dcx.emit_err(InvalidIntLiteralWidth { span, width: suf[1..].into() }) } else if let Some(fixed) = fix_base_capitalisation(lit.symbol.as_str(), suf) { dcx.emit_err(InvalidNumLiteralBasePrefix { span, fixed }) } else { dcx.emit_err(InvalidNumLiteralSuffix { span, suffix: suf.to_string() }) } } LitError::InvalidFloatSuffix(suffix) => { let suf = suffix.as_str(); if looks_like_width_suffix(&['f'], suf) { // If it looks like a width, try to be helpful. dcx.emit_err(InvalidFloatLiteralWidth { span, width: suf[1..].to_string() }) } else { dcx.emit_err(InvalidFloatLiteralSuffix { span, suffix: suf.to_string() }) } } LitError::NonDecimalFloat(base) => match base { 16 => dcx.emit_err(HexadecimalFloatLiteralNotSupported { span }), 8 => dcx.emit_err(OctalFloatLiteralNotSupported { span }), 2 => dcx.emit_err(BinaryFloatLiteralNotSupported { span }), _ => unreachable!(), }, LitError::IntTooLarge(base) => { let max = u128::MAX; let limit = match base { 2 => format!("{max:#b}"), 8 => format!("{max:#o}"), 16 => format!("{max:#x}"), _ => format!("{max}"), }; dcx.emit_err(IntLiteralTooLarge { span, limit }) } } } #[derive(Diagnostic)] #[diag(session_optimization_fuel_exhausted)] pub struct OptimisationFuelExhausted { pub msg: String, } #[derive(Diagnostic)] #[diag(session_incompatible_linker_flavor)] #[note] pub struct IncompatibleLinkerFlavor { pub flavor: &'static str, pub compatible_list: String, } #[derive(Diagnostic)] #[diag(session_function_return_requires_x86_or_x86_64)] pub(crate) struct FunctionReturnRequiresX86OrX8664; #[derive(Diagnostic)] #[diag(session_function_return_thunk_extern_requires_non_large_code_model)] pub(crate) struct FunctionReturnThunkExternRequiresNonLargeCodeModel; #[derive(Diagnostic)] #[diag(session_failed_to_create_profiler)] pub struct FailedToCreateProfiler { pub err: String, }