| //===- FileCheck.cpp - Check that File's Contents match what is expected --===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // FileCheck does a line-by line check of a file that validates whether it |
| // contains the expected content. This is useful for regression tests etc. |
| // |
| // This program exits with an exit status of 2 on error, exit status of 0 if |
| // the file matched the expected contents, and exit status of 1 if it did not |
| // contain the expected contents. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/FileCheck/FileCheck.h" |
| #include "llvm/Support/CommandLine.h" |
| #include "llvm/Support/InitLLVM.h" |
| #include "llvm/Support/Process.h" |
| #include "llvm/Support/WithColor.h" |
| #include "llvm/Support/raw_ostream.h" |
| #include <cmath> |
| #include <map> |
| using namespace llvm; |
| |
| static cl::extrahelp FileCheckOptsEnv( |
| "\nOptions are parsed from the environment variable FILECHECK_OPTS and\n" |
| "from the command line.\n"); |
| |
| static cl::opt<std::string> |
| CheckFilename(cl::Positional, cl::desc("<check-file>"), cl::Optional); |
| |
| static cl::opt<std::string> |
| InputFilename("input-file", cl::desc("File to check (defaults to stdin)"), |
| cl::init("-"), cl::value_desc("filename")); |
| |
| static cl::list<std::string> CheckPrefixes( |
| "check-prefix", |
| cl::desc("Prefix to use from check file (defaults to 'CHECK')")); |
| static cl::alias CheckPrefixesAlias( |
| "check-prefixes", cl::aliasopt(CheckPrefixes), cl::CommaSeparated, |
| cl::NotHidden, |
| cl::desc( |
| "Alias for -check-prefix permitting multiple comma separated values")); |
| |
| static cl::list<std::string> CommentPrefixes( |
| "comment-prefixes", cl::CommaSeparated, cl::Hidden, |
| cl::desc("Comma-separated list of comment prefixes to use from check file\n" |
| "(defaults to 'COM,RUN'). Please avoid using this feature in\n" |
| "LLVM's LIT-based test suites, which should be easier to\n" |
| "maintain if they all follow a consistent comment style. This\n" |
| "feature is meant for non-LIT test suites using FileCheck.")); |
| |
| static cl::opt<bool> NoCanonicalizeWhiteSpace( |
| "strict-whitespace", |
| cl::desc("Do not treat all horizontal whitespace as equivalent")); |
| |
| static cl::opt<bool> IgnoreCase( |
| "ignore-case", |
| cl::desc("Use case-insensitive matching")); |
| |
| static cl::list<std::string> ImplicitCheckNot( |
| "implicit-check-not", |
| cl::desc("Add an implicit negative check with this pattern to every\n" |
| "positive check. This can be used to ensure that no instances of\n" |
| "this pattern occur which are not matched by a positive pattern"), |
| cl::value_desc("pattern")); |
| |
| static cl::list<std::string> |
| GlobalDefines("D", cl::AlwaysPrefix, |
| cl::desc("Define a variable to be used in capture patterns."), |
| cl::value_desc("VAR=VALUE")); |
| |
| static cl::opt<bool> AllowEmptyInput( |
| "allow-empty", cl::init(false), |
| cl::desc("Allow the input file to be empty. This is useful when making\n" |
| "checks that some error message does not occur, for example.")); |
| |
| static cl::opt<bool> AllowUnusedPrefixes( |
| "allow-unused-prefixes", cl::init(false), cl::ZeroOrMore, |
| cl::desc("Allow prefixes to be specified but not appear in the test.")); |
| |
| static cl::opt<bool> MatchFullLines( |
| "match-full-lines", cl::init(false), |
| cl::desc("Require all positive matches to cover an entire input line.\n" |
| "Allows leading and trailing whitespace if --strict-whitespace\n" |
| "is not also passed.")); |
| |
| static cl::opt<bool> EnableVarScope( |
| "enable-var-scope", cl::init(false), |
| cl::desc("Enables scope for regex variables. Variables with names that\n" |
| "do not start with '$' will be reset at the beginning of\n" |
| "each CHECK-LABEL block.")); |
| |
| static cl::opt<bool> AllowDeprecatedDagOverlap( |
| "allow-deprecated-dag-overlap", cl::init(false), |
| cl::desc("Enable overlapping among matches in a group of consecutive\n" |
| "CHECK-DAG directives. This option is deprecated and is only\n" |
| "provided for convenience as old tests are migrated to the new\n" |
| "non-overlapping CHECK-DAG implementation.\n")); |
| |
| static cl::opt<bool> Verbose( |
| "v", cl::init(false), cl::ZeroOrMore, |
| cl::desc("Print directive pattern matches, or add them to the input dump\n" |
| "if enabled.\n")); |
| |
| static cl::opt<bool> VerboseVerbose( |
| "vv", cl::init(false), cl::ZeroOrMore, |
| cl::desc("Print information helpful in diagnosing internal FileCheck\n" |
| "issues, or add it to the input dump if enabled. Implies\n" |
| "-v.\n")); |
| |
| // The order of DumpInputValue members affects their precedence, as documented |
| // for -dump-input below. |
| enum DumpInputValue { |
| DumpInputNever, |
| DumpInputFail, |
| DumpInputAlways, |
| DumpInputHelp |
| }; |
| |
| static cl::list<DumpInputValue> DumpInputs( |
| "dump-input", |
| cl::desc("Dump input to stderr, adding annotations representing\n" |
| "currently enabled diagnostics. When there are multiple\n" |
| "occurrences of this option, the <value> that appears earliest\n" |
| "in the list below has precedence. The default is 'fail'.\n"), |
| cl::value_desc("mode"), |
| cl::values(clEnumValN(DumpInputHelp, "help", "Explain input dump and quit"), |
| clEnumValN(DumpInputAlways, "always", "Always dump input"), |
| clEnumValN(DumpInputFail, "fail", "Dump input on failure"), |
| clEnumValN(DumpInputNever, "never", "Never dump input"))); |
| |
| // The order of DumpInputFilterValue members affects their precedence, as |
| // documented for -dump-input-filter below. |
| enum DumpInputFilterValue { |
| DumpInputFilterError, |
| DumpInputFilterAnnotation, |
| DumpInputFilterAnnotationFull, |
| DumpInputFilterAll |
| }; |
| |
| static cl::list<DumpInputFilterValue> DumpInputFilters( |
| "dump-input-filter", |
| cl::desc("In the dump requested by -dump-input, print only input lines of\n" |
| "kind <value> plus any context specified by -dump-input-context.\n" |
| "When there are multiple occurrences of this option, the <value>\n" |
| "that appears earliest in the list below has precedence. The\n" |
| "default is 'error' when -dump-input=fail, and it's 'all' when\n" |
| "-dump-input=always.\n"), |
| cl::values(clEnumValN(DumpInputFilterAll, "all", "All input lines"), |
| clEnumValN(DumpInputFilterAnnotationFull, "annotation-full", |
| "Input lines with annotations"), |
| clEnumValN(DumpInputFilterAnnotation, "annotation", |
| "Input lines with starting points of annotations"), |
| clEnumValN(DumpInputFilterError, "error", |
| "Input lines with starting points of error " |
| "annotations"))); |
| |
| static cl::list<unsigned> DumpInputContexts( |
| "dump-input-context", cl::value_desc("N"), |
| cl::desc("In the dump requested by -dump-input, print <N> input lines\n" |
| "before and <N> input lines after any lines specified by\n" |
| "-dump-input-filter. When there are multiple occurrences of\n" |
| "this option, the largest specified <N> has precedence. The\n" |
| "default is 5.\n")); |
| |
| typedef cl::list<std::string>::const_iterator prefix_iterator; |
| |
| |
| |
| |
| |
| |
| |
| static void DumpCommandLine(int argc, char **argv) { |
| errs() << "FileCheck command line: "; |
| for (int I = 0; I < argc; I++) |
| errs() << " " << argv[I]; |
| errs() << "\n"; |
| } |
| |
| struct MarkerStyle { |
| /// The starting char (before tildes) for marking the line. |
| char Lead; |
| /// What color to use for this annotation. |
| raw_ostream::Colors Color; |
| /// A note to follow the marker, or empty string if none. |
| std::string Note; |
| /// Does this marker indicate inclusion by -dump-input-filter=error? |
| bool FiltersAsError; |
| MarkerStyle() {} |
| MarkerStyle(char Lead, raw_ostream::Colors Color, |
| const std::string &Note = "", bool FiltersAsError = false) |
| : Lead(Lead), Color(Color), Note(Note), FiltersAsError(FiltersAsError) { |
| assert((!FiltersAsError || !Note.empty()) && |
| "expected error diagnostic to have note"); |
| } |
| }; |
| |
| static MarkerStyle GetMarker(FileCheckDiag::MatchType MatchTy) { |
| switch (MatchTy) { |
| case FileCheckDiag::MatchFoundAndExpected: |
| return MarkerStyle('^', raw_ostream::GREEN); |
| case FileCheckDiag::MatchFoundButExcluded: |
| return MarkerStyle('!', raw_ostream::RED, "error: no match expected", |
| /*FiltersAsError=*/true); |
| case FileCheckDiag::MatchFoundButWrongLine: |
| return MarkerStyle('!', raw_ostream::RED, "error: match on wrong line", |
| /*FiltersAsError=*/true); |
| case FileCheckDiag::MatchFoundButDiscarded: |
| return MarkerStyle('!', raw_ostream::CYAN, |
| "discard: overlaps earlier match"); |
| case FileCheckDiag::MatchFoundErrorNote: |
| // Note should always be overridden within the FileCheckDiag. |
| return MarkerStyle('!', raw_ostream::RED, |
| "error: unknown error after match", |
| /*FiltersAsError=*/true); |
| case FileCheckDiag::MatchNoneAndExcluded: |
| return MarkerStyle('X', raw_ostream::GREEN); |
| case FileCheckDiag::MatchNoneButExpected: |
| return MarkerStyle('X', raw_ostream::RED, "error: no match found", |
| /*FiltersAsError=*/true); |
| case FileCheckDiag::MatchNoneForInvalidPattern: |
| return MarkerStyle('X', raw_ostream::RED, |
| "error: match failed for invalid pattern", |
| /*FiltersAsError=*/true); |
| case FileCheckDiag::MatchFuzzy: |
| return MarkerStyle('?', raw_ostream::MAGENTA, "possible intended match", |
| /*FiltersAsError=*/true); |
| } |
| llvm_unreachable_internal("unexpected match type"); |
| } |
| |
| static void DumpInputAnnotationHelp(raw_ostream &OS) { |
| OS << "The following description was requested by -dump-input=help to\n" |
| << "explain the input dump printed by FileCheck.\n" |
| << "\n" |
| << "Related command-line options:\n" |
| << "\n" |
| << " - -dump-input=<value> enables or disables the input dump\n" |
| << " - -dump-input-filter=<value> filters the input lines\n" |
| << " - -dump-input-context=<N> adjusts the context of filtered lines\n" |
| << " - -v and -vv add more annotations\n" |
| << " - -color forces colors to be enabled both in the dump and below\n" |
| << " - -help documents the above options in more detail\n" |
| << "\n" |
| << "These options can also be set via FILECHECK_OPTS. For example, for\n" |
| << "maximum debugging output on failures:\n" |
| << "\n" |
| << " $ FILECHECK_OPTS='-dump-input-filter=all -vv -color' ninja check\n" |
| << "\n" |
| << "Input dump annotation format:\n" |
| << "\n"; |
| |
| // Labels for input lines. |
| OS << " - "; |
| WithColor(OS, raw_ostream::SAVEDCOLOR, true) << "L:"; |
| OS << " labels line number L of the input file\n" |
| << " An extra space is added after each input line to represent" |
| << " the\n" |
| << " newline character\n"; |
| |
| // Labels for annotation lines. |
| OS << " - "; |
| WithColor(OS, raw_ostream::SAVEDCOLOR, true) << "T:L"; |
| OS << " labels the only match result for either (1) a pattern of type T" |
| << " from\n" |
| << " line L of the check file if L is an integer or (2) the" |
| << " I-th implicit\n" |
| << " pattern if L is \"imp\" followed by an integer " |
| << "I (index origin one)\n"; |
| OS << " - "; |
| WithColor(OS, raw_ostream::SAVEDCOLOR, true) << "T:L'N"; |
| OS << " labels the Nth match result for such a pattern\n"; |
| |
| // Markers on annotation lines. |
| OS << " - "; |
| WithColor(OS, raw_ostream::SAVEDCOLOR, true) << "^~~"; |
| OS << " marks good match (reported if -v)\n" |
| << " - "; |
| WithColor(OS, raw_ostream::SAVEDCOLOR, true) << "!~~"; |
| OS << " marks bad match, such as:\n" |
| << " - CHECK-NEXT on same line as previous match (error)\n" |
| << " - CHECK-NOT found (error)\n" |
| << " - CHECK-DAG overlapping match (discarded, reported if " |
| << "-vv)\n" |
| << " - "; |
| WithColor(OS, raw_ostream::SAVEDCOLOR, true) << "X~~"; |
| OS << " marks search range when no match is found, such as:\n" |
| << " - CHECK-NEXT not found (error)\n" |
| << " - CHECK-NOT not found (success, reported if -vv)\n" |
| << " - CHECK-DAG not found after discarded matches (error)\n" |
| << " - "; |
| WithColor(OS, raw_ostream::SAVEDCOLOR, true) << "?"; |
| OS << " marks fuzzy match when no match is found\n"; |
| |
| // Elided lines. |
| OS << " - "; |
| WithColor(OS, raw_ostream::SAVEDCOLOR, true) << "..."; |
| OS << " indicates elided input lines and annotations, as specified by\n" |
| << " -dump-input-filter and -dump-input-context\n"; |
| |
| // Colors. |
| OS << " - colors "; |
| WithColor(OS, raw_ostream::GREEN, true) << "success"; |
| OS << ", "; |
| WithColor(OS, raw_ostream::RED, true) << "error"; |
| OS << ", "; |
| WithColor(OS, raw_ostream::MAGENTA, true) << "fuzzy match"; |
| OS << ", "; |
| WithColor(OS, raw_ostream::CYAN, true, false) << "discarded match"; |
| OS << ", "; |
| WithColor(OS, raw_ostream::CYAN, true, true) << "unmatched input"; |
| OS << "\n"; |
| } |
| |
| /// An annotation for a single input line. |
| struct InputAnnotation { |
| /// The index of the match result across all checks |
| unsigned DiagIndex; |
| /// The label for this annotation. |
| std::string Label; |
| /// Is this the initial fragment of a diagnostic that has been broken across |
| /// multiple lines? |
| bool IsFirstLine; |
| /// What input line (one-origin indexing) this annotation marks. This might |
| /// be different from the starting line of the original diagnostic if |
| /// !IsFirstLine. |
| unsigned InputLine; |
| /// The column range (one-origin indexing, open end) in which to mark the |
| /// input line. If InputEndCol is UINT_MAX, treat it as the last column |
| /// before the newline. |
| unsigned InputStartCol, InputEndCol; |
| /// The marker to use. |
| MarkerStyle Marker; |
| /// Whether this annotation represents a good match for an expected pattern. |
| bool FoundAndExpectedMatch; |
| }; |
| |
| /// Get an abbreviation for the check type. |
| static std::string GetCheckTypeAbbreviation(Check::FileCheckType Ty) { |
| switch (Ty) { |
| case Check::CheckPlain: |
| if (Ty.getCount() > 1) |
| return "count"; |
| return "check"; |
| case Check::CheckNext: |
| return "next"; |
| case Check::CheckSame: |
| return "same"; |
| case Check::CheckNot: |
| return "not"; |
| case Check::CheckDAG: |
| return "dag"; |
| case Check::CheckLabel: |
| return "label"; |
| case Check::CheckEmpty: |
| return "empty"; |
| case Check::CheckComment: |
| return "com"; |
| case Check::CheckEOF: |
| return "eof"; |
| case Check::CheckBadNot: |
| return "bad-not"; |
| case Check::CheckBadCount: |
| return "bad-count"; |
| case Check::CheckNone: |
| llvm_unreachable("invalid FileCheckType"); |
| } |
| llvm_unreachable("unknown FileCheckType"); |
| } |
| |
| static void |
| BuildInputAnnotations(const SourceMgr &SM, unsigned CheckFileBufferID, |
| const std::pair<unsigned, unsigned> &ImpPatBufferIDRange, |
| const std::vector<FileCheckDiag> &Diags, |
| std::vector<InputAnnotation> &Annotations, |
| unsigned &LabelWidth) { |
| struct CompareSMLoc { |
| bool operator()(const SMLoc &LHS, const SMLoc &RHS) const { |
| return LHS.getPointer() < RHS.getPointer(); |
| } |
| }; |
| // How many diagnostics does each pattern have? |
| std::map<SMLoc, unsigned, CompareSMLoc> DiagCountPerPattern; |
| for (auto Diag : Diags) |
| ++DiagCountPerPattern[Diag.CheckLoc]; |
| // How many diagnostics have we seen so far per pattern? |
| std::map<SMLoc, unsigned, CompareSMLoc> DiagIndexPerPattern; |
| // How many total diagnostics have we seen so far? |
| unsigned DiagIndex = 0; |
| // What's the widest label? |
| LabelWidth = 0; |
| for (auto DiagItr = Diags.begin(), DiagEnd = Diags.end(); DiagItr != DiagEnd; |
| ++DiagItr) { |
| InputAnnotation A; |
| A.DiagIndex = DiagIndex++; |
| |
| // Build label, which uniquely identifies this check result. |
| unsigned CheckBufferID = SM.FindBufferContainingLoc(DiagItr->CheckLoc); |
| auto CheckLineAndCol = |
| SM.getLineAndColumn(DiagItr->CheckLoc, CheckBufferID); |
| llvm::raw_string_ostream Label(A.Label); |
| Label << GetCheckTypeAbbreviation(DiagItr->CheckTy) << ":"; |
| if (CheckBufferID == CheckFileBufferID) |
| Label << CheckLineAndCol.first; |
| else if (ImpPatBufferIDRange.first <= CheckBufferID && |
| CheckBufferID < ImpPatBufferIDRange.second) |
| Label << "imp" << (CheckBufferID - ImpPatBufferIDRange.first + 1); |
| else |
| llvm_unreachable("expected diagnostic's check location to be either in " |
| "the check file or for an implicit pattern"); |
| if (DiagCountPerPattern[DiagItr->CheckLoc] > 1) |
| Label << "'" << DiagIndexPerPattern[DiagItr->CheckLoc]++; |
| Label.flush(); |
| LabelWidth = std::max((std::string::size_type)LabelWidth, A.Label.size()); |
| |
| A.Marker = GetMarker(DiagItr->MatchTy); |
| if (!DiagItr->Note.empty()) { |
| A.Marker.Note = DiagItr->Note; |
| // It's less confusing if notes that don't actually have ranges don't have |
| // markers. For example, a marker for 'with "VAR" equal to "5"' would |
| // seem to indicate where "VAR" matches, but the location we actually have |
| // for the marker simply points to the start of the match/search range for |
| // the full pattern of which the substitution is potentially just one |
| // component. |
| if (DiagItr->InputStartLine == DiagItr->InputEndLine && |
| DiagItr->InputStartCol == DiagItr->InputEndCol) |
| A.Marker.Lead = ' '; |
| } |
| if (DiagItr->MatchTy == FileCheckDiag::MatchFoundErrorNote) { |
| assert(!DiagItr->Note.empty() && |
| "expected custom note for MatchFoundErrorNote"); |
| A.Marker.Note = "error: " + A.Marker.Note; |
| } |
| A.FoundAndExpectedMatch = |
| DiagItr->MatchTy == FileCheckDiag::MatchFoundAndExpected; |
| |
| // Compute the mark location, and break annotation into multiple |
| // annotations if it spans multiple lines. |
| A.IsFirstLine = true; |
| A.InputLine = DiagItr->InputStartLine; |
| A.InputStartCol = DiagItr->InputStartCol; |
| if (DiagItr->InputStartLine == DiagItr->InputEndLine) { |
| // Sometimes ranges are empty in order to indicate a specific point, but |
| // that would mean nothing would be marked, so adjust the range to |
| // include the following character. |
| A.InputEndCol = |
| std::max(DiagItr->InputStartCol + 1, DiagItr->InputEndCol); |
| Annotations.push_back(A); |
| } else { |
| assert(DiagItr->InputStartLine < DiagItr->InputEndLine && |
| "expected input range not to be inverted"); |
| A.InputEndCol = UINT_MAX; |
| Annotations.push_back(A); |
| for (unsigned L = DiagItr->InputStartLine + 1, E = DiagItr->InputEndLine; |
| L <= E; ++L) { |
| // If a range ends before the first column on a line, then it has no |
| // characters on that line, so there's nothing to render. |
| if (DiagItr->InputEndCol == 1 && L == E) |
| break; |
| InputAnnotation B; |
| B.DiagIndex = A.DiagIndex; |
| B.Label = A.Label; |
| B.IsFirstLine = false; |
| B.InputLine = L; |
| B.Marker = A.Marker; |
| B.Marker.Lead = '~'; |
| B.Marker.Note = ""; |
| B.InputStartCol = 1; |
| if (L != E) |
| B.InputEndCol = UINT_MAX; |
| else |
| B.InputEndCol = DiagItr->InputEndCol; |
| B.FoundAndExpectedMatch = A.FoundAndExpectedMatch; |
| Annotations.push_back(B); |
| } |
| } |
| } |
| } |
| |
| static unsigned FindInputLineInFilter( |
| DumpInputFilterValue DumpInputFilter, unsigned CurInputLine, |
| const std::vector<InputAnnotation>::iterator &AnnotationBeg, |
| const std::vector<InputAnnotation>::iterator &AnnotationEnd) { |
| if (DumpInputFilter == DumpInputFilterAll) |
| return CurInputLine; |
| for (auto AnnotationItr = AnnotationBeg; AnnotationItr != AnnotationEnd; |
| ++AnnotationItr) { |
| switch (DumpInputFilter) { |
| case DumpInputFilterAll: |
| llvm_unreachable("unexpected DumpInputFilterAll"); |
| break; |
| case DumpInputFilterAnnotationFull: |
| return AnnotationItr->InputLine; |
| case DumpInputFilterAnnotation: |
| if (AnnotationItr->IsFirstLine) |
| return AnnotationItr->InputLine; |
| break; |
| case DumpInputFilterError: |
| if (AnnotationItr->IsFirstLine && AnnotationItr->Marker.FiltersAsError) |
| return AnnotationItr->InputLine; |
| break; |
| } |
| } |
| return UINT_MAX; |
| } |
| |
| /// To OS, print a vertical ellipsis (right-justified at LabelWidth) if it would |
| /// occupy less lines than ElidedLines, but print ElidedLines otherwise. Either |
| /// way, clear ElidedLines. Thus, if ElidedLines is empty, do nothing. |
| static void DumpEllipsisOrElidedLines(raw_ostream &OS, std::string &ElidedLines, |
| unsigned LabelWidth) { |
| if (ElidedLines.empty()) |
| return; |
| unsigned EllipsisLines = 3; |
| if (EllipsisLines < StringRef(ElidedLines).count('\n')) { |
| for (unsigned i = 0; i < EllipsisLines; ++i) { |
| WithColor(OS, raw_ostream::BLACK, /*Bold=*/true) |
| << right_justify(".", LabelWidth); |
| OS << '\n'; |
| } |
| } else |
| OS << ElidedLines; |
| ElidedLines.clear(); |
| } |
| |
| static void DumpAnnotatedInput(raw_ostream &OS, const FileCheckRequest &Req, |
| DumpInputFilterValue DumpInputFilter, |
| unsigned DumpInputContext, |
| StringRef InputFileText, |
| std::vector<InputAnnotation> &Annotations, |
| unsigned LabelWidth) { |
| OS << "Input was:\n<<<<<<\n"; |
| |
| // Sort annotations. |
| llvm::sort(Annotations, |
| [](const InputAnnotation &A, const InputAnnotation &B) { |
| // 1. Sort annotations in the order of the input lines. |
| // |
| // This makes it easier to find relevant annotations while |
| // iterating input lines in the implementation below. FileCheck |
| // does not always produce diagnostics in the order of input |
| // lines due to, for example, CHECK-DAG and CHECK-NOT. |
| if (A.InputLine != B.InputLine) |
| return A.InputLine < B.InputLine; |
| // 2. Sort annotations in the temporal order FileCheck produced |
| // their associated diagnostics. |
| // |
| // This sort offers several benefits: |
| // |
| // A. On a single input line, the order of annotations reflects |
| // the FileCheck logic for processing directives/patterns. |
| // This can be helpful in understanding cases in which the |
| // order of the associated directives/patterns in the check |
| // file or on the command line either (i) does not match the |
| // temporal order in which FileCheck looks for matches for the |
| // directives/patterns (due to, for example, CHECK-LABEL, |
| // CHECK-NOT, or `--implicit-check-not`) or (ii) does match |
| // that order but does not match the order of those |
| // diagnostics along an input line (due to, for example, |
| // CHECK-DAG). |
| // |
| // On the other hand, because our presentation format presents |
| // input lines in order, there's no clear way to offer the |
| // same benefit across input lines. For consistency, it might |
| // then seem worthwhile to have annotations on a single line |
| // also sorted in input order (that is, by input column). |
| // However, in practice, this appears to be more confusing |
| // than helpful. Perhaps it's intuitive to expect annotations |
| // to be listed in the temporal order in which they were |
| // produced except in cases the presentation format obviously |
| // and inherently cannot support it (that is, across input |
| // lines). |
| // |
| // B. When diagnostics' annotations are split among multiple |
| // input lines, the user must track them from one input line |
| // to the next. One property of the sort chosen here is that |
| // it facilitates the user in this regard by ensuring the |
| // following: when comparing any two input lines, a |
| // diagnostic's annotations are sorted in the same position |
| // relative to all other diagnostics' annotations. |
| return A.DiagIndex < B.DiagIndex; |
| }); |
| |
| // Compute the width of the label column. |
| const unsigned char *InputFilePtr = InputFileText.bytes_begin(), |
| *InputFileEnd = InputFileText.bytes_end(); |
| unsigned LineCount = InputFileText.count('\n'); |
| if (InputFileEnd[-1] != '\n') |
| ++LineCount; |
| unsigned LineNoWidth = std::log10(LineCount) + 1; |
| // +3 below adds spaces (1) to the left of the (right-aligned) line numbers |
| // on input lines and (2) to the right of the (left-aligned) labels on |
| // annotation lines so that input lines and annotation lines are more |
| // visually distinct. For example, the spaces on the annotation lines ensure |
| // that input line numbers and check directive line numbers never align |
| // horizontally. Those line numbers might not even be for the same file. |
| // One space would be enough to achieve that, but more makes it even easier |
| // to see. |
| LabelWidth = std::max(LabelWidth, LineNoWidth) + 3; |
| |
| // Print annotated input lines. |
| unsigned PrevLineInFilter = 0; // 0 means none so far |
| unsigned NextLineInFilter = 0; // 0 means uncomputed, UINT_MAX means none |
| std::string ElidedLines; |
| raw_string_ostream ElidedLinesOS(ElidedLines); |
| ColorMode TheColorMode = |
| WithColor(OS).colorsEnabled() ? ColorMode::Enable : ColorMode::Disable; |
| if (TheColorMode == ColorMode::Enable) |
| ElidedLinesOS.enable_colors(true); |
| auto AnnotationItr = Annotations.begin(), AnnotationEnd = Annotations.end(); |
| for (unsigned Line = 1; |
| InputFilePtr != InputFileEnd || AnnotationItr != AnnotationEnd; |
| ++Line) { |
| const unsigned char *InputFileLine = InputFilePtr; |
| |
| // Compute the previous and next line included by the filter. |
| if (NextLineInFilter < Line) |
| NextLineInFilter = FindInputLineInFilter(DumpInputFilter, Line, |
| AnnotationItr, AnnotationEnd); |
| assert(NextLineInFilter && "expected NextLineInFilter to be computed"); |
| if (NextLineInFilter == Line) |
| PrevLineInFilter = Line; |
| |
| // Elide this input line and its annotations if it's not within the |
| // context specified by -dump-input-context of an input line included by |
| // -dump-input-filter. However, in case the resulting ellipsis would occupy |
| // more lines than the input lines and annotations it elides, buffer the |
| // elided lines and annotations so we can print them instead. |
| raw_ostream *LineOS = &OS; |
| if ((!PrevLineInFilter || PrevLineInFilter + DumpInputContext < Line) && |
| (NextLineInFilter == UINT_MAX || |
| Line + DumpInputContext < NextLineInFilter)) |
| LineOS = &ElidedLinesOS; |
| else { |
| LineOS = &OS; |
| DumpEllipsisOrElidedLines(OS, ElidedLinesOS.str(), LabelWidth); |
| } |
| |
| // Print right-aligned line number. |
| WithColor(*LineOS, raw_ostream::BLACK, /*Bold=*/true, /*BF=*/false, |
| TheColorMode) |
| << format_decimal(Line, LabelWidth) << ": "; |
| |
| // For the case where -v and colors are enabled, find the annotations for |
| // good matches for expected patterns in order to highlight everything |
| // else in the line. There are no such annotations if -v is disabled. |
| std::vector<InputAnnotation> FoundAndExpectedMatches; |
| if (Req.Verbose && TheColorMode == ColorMode::Enable) { |
| for (auto I = AnnotationItr; I != AnnotationEnd && I->InputLine == Line; |
| ++I) { |
| if (I->FoundAndExpectedMatch) |
| FoundAndExpectedMatches.push_back(*I); |
| } |
| } |
| |
| // Print numbered line with highlighting where there are no matches for |
| // expected patterns. |
| bool Newline = false; |
| { |
| WithColor COS(*LineOS, raw_ostream::SAVEDCOLOR, /*Bold=*/false, |
| /*BG=*/false, TheColorMode); |
| bool InMatch = false; |
| if (Req.Verbose) |
| COS.changeColor(raw_ostream::CYAN, true, true); |
| for (unsigned Col = 1; InputFilePtr != InputFileEnd && !Newline; ++Col) { |
| bool WasInMatch = InMatch; |
| InMatch = false; |
| for (auto M : FoundAndExpectedMatches) { |
| if (M.InputStartCol <= Col && Col < M.InputEndCol) { |
| InMatch = true; |
| break; |
| } |
| } |
| if (!WasInMatch && InMatch) |
| COS.resetColor(); |
| else if (WasInMatch && !InMatch) |
| COS.changeColor(raw_ostream::CYAN, true, true); |
| if (*InputFilePtr == '\n') { |
| Newline = true; |
| COS << ' '; |
| } else |
| COS << *InputFilePtr; |
| ++InputFilePtr; |
| } |
| } |
| *LineOS << '\n'; |
| unsigned InputLineWidth = InputFilePtr - InputFileLine; |
| |
| // Print any annotations. |
| while (AnnotationItr != AnnotationEnd && |
| AnnotationItr->InputLine == Line) { |
| WithColor COS(*LineOS, AnnotationItr->Marker.Color, /*Bold=*/true, |
| /*BG=*/false, TheColorMode); |
| // The two spaces below are where the ": " appears on input lines. |
| COS << left_justify(AnnotationItr->Label, LabelWidth) << " "; |
| unsigned Col; |
| for (Col = 1; Col < AnnotationItr->InputStartCol; ++Col) |
| COS << ' '; |
| COS << AnnotationItr->Marker.Lead; |
| // If InputEndCol=UINT_MAX, stop at InputLineWidth. |
| for (++Col; Col < AnnotationItr->InputEndCol && Col <= InputLineWidth; |
| ++Col) |
| COS << '~'; |
| const std::string &Note = AnnotationItr->Marker.Note; |
| if (!Note.empty()) { |
| // Put the note at the end of the input line. If we were to instead |
| // put the note right after the marker, subsequent annotations for the |
| // same input line might appear to mark this note instead of the input |
| // line. |
| for (; Col <= InputLineWidth; ++Col) |
| COS << ' '; |
| COS << ' ' << Note; |
| } |
| COS << '\n'; |
| ++AnnotationItr; |
| } |
| } |
| DumpEllipsisOrElidedLines(OS, ElidedLinesOS.str(), LabelWidth); |
| |
| OS << ">>>>>>\n"; |
| } |
| |
| int main(int argc, char **argv) { |
| // Enable use of ANSI color codes because FileCheck is using them to |
| // highlight text. |
| llvm::sys::Process::UseANSIEscapeCodes(true); |
| |
| InitLLVM X(argc, argv); |
| cl::ParseCommandLineOptions(argc, argv, /*Overview*/ "", /*Errs*/ nullptr, |
| "FILECHECK_OPTS"); |
| |
| // Select -dump-input* values. The -help documentation specifies the default |
| // value and which value to choose if an option is specified multiple times. |
| // In the latter case, the general rule of thumb is to choose the value that |
| // provides the most information. |
| DumpInputValue DumpInput = |
| DumpInputs.empty() |
| ? DumpInputFail |
| : *std::max_element(DumpInputs.begin(), DumpInputs.end()); |
| DumpInputFilterValue DumpInputFilter; |
| if (DumpInputFilters.empty()) |
| DumpInputFilter = DumpInput == DumpInputAlways ? DumpInputFilterAll |
| : DumpInputFilterError; |
| else |
| DumpInputFilter = |
| *std::max_element(DumpInputFilters.begin(), DumpInputFilters.end()); |
| unsigned DumpInputContext = DumpInputContexts.empty() |
| ? 5 |
| : *std::max_element(DumpInputContexts.begin(), |
| DumpInputContexts.end()); |
| |
| if (DumpInput == DumpInputHelp) { |
| DumpInputAnnotationHelp(outs()); |
| return 0; |
| } |
| if (CheckFilename.empty()) { |
| errs() << "<check-file> not specified\n"; |
| return 2; |
| } |
| |
| FileCheckRequest Req; |
| append_range(Req.CheckPrefixes, CheckPrefixes); |
| |
| append_range(Req.CommentPrefixes, CommentPrefixes); |
| |
| append_range(Req.ImplicitCheckNot, ImplicitCheckNot); |
| |
| bool GlobalDefineError = false; |
| for (StringRef G : GlobalDefines) { |
| size_t EqIdx = G.find('='); |
| if (EqIdx == std::string::npos) { |
| errs() << "Missing equal sign in command-line definition '-D" << G |
| << "'\n"; |
| GlobalDefineError = true; |
| continue; |
| } |
| if (EqIdx == 0) { |
| errs() << "Missing variable name in command-line definition '-D" << G |
| << "'\n"; |
| GlobalDefineError = true; |
| continue; |
| } |
| Req.GlobalDefines.push_back(G); |
| } |
| if (GlobalDefineError) |
| return 2; |
| |
| Req.AllowEmptyInput = AllowEmptyInput; |
| Req.AllowUnusedPrefixes = AllowUnusedPrefixes; |
| Req.EnableVarScope = EnableVarScope; |
| Req.AllowDeprecatedDagOverlap = AllowDeprecatedDagOverlap; |
| Req.Verbose = Verbose; |
| Req.VerboseVerbose = VerboseVerbose; |
| Req.NoCanonicalizeWhiteSpace = NoCanonicalizeWhiteSpace; |
| Req.MatchFullLines = MatchFullLines; |
| Req.IgnoreCase = IgnoreCase; |
| |
| if (VerboseVerbose) |
| Req.Verbose = true; |
| |
| FileCheck FC(Req); |
| if (!FC.ValidateCheckPrefixes()) |
| return 2; |
| |
| Regex PrefixRE = FC.buildCheckPrefixRegex(); |
| std::string REError; |
| if (!PrefixRE.isValid(REError)) { |
| errs() << "Unable to combine check-prefix strings into a prefix regular " |
| "expression! This is likely a bug in FileCheck's verification of " |
| "the check-prefix strings. Regular expression parsing failed " |
| "with the following error: " |
| << REError << "\n"; |
| return 2; |
| } |
| |
| SourceMgr SM; |
| |
| // Read the expected strings from the check file. |
| ErrorOr<std::unique_ptr<MemoryBuffer>> CheckFileOrErr = |
| MemoryBuffer::getFileOrSTDIN(CheckFilename, /*IsText=*/true); |
| if (std::error_code EC = CheckFileOrErr.getError()) { |
| errs() << "Could not open check file '" << CheckFilename |
| << "': " << EC.message() << '\n'; |
| return 2; |
| } |
| MemoryBuffer &CheckFile = *CheckFileOrErr.get(); |
| |
| SmallString<4096> CheckFileBuffer; |
| StringRef CheckFileText = FC.CanonicalizeFile(CheckFile, CheckFileBuffer); |
| |
| unsigned CheckFileBufferID = |
| SM.AddNewSourceBuffer(MemoryBuffer::getMemBuffer( |
| CheckFileText, CheckFile.getBufferIdentifier()), |
| SMLoc()); |
| |
| std::pair<unsigned, unsigned> ImpPatBufferIDRange; |
| if (FC.readCheckFile(SM, CheckFileText, PrefixRE, &ImpPatBufferIDRange)) |
| return 2; |
| |
| // Open the file to check and add it to SourceMgr. |
| ErrorOr<std::unique_ptr<MemoryBuffer>> InputFileOrErr = |
| MemoryBuffer::getFileOrSTDIN(InputFilename, /*IsText=*/true); |
| if (InputFilename == "-") |
| InputFilename = "<stdin>"; // Overwrite for improved diagnostic messages |
| if (std::error_code EC = InputFileOrErr.getError()) { |
| errs() << "Could not open input file '" << InputFilename |
| << "': " << EC.message() << '\n'; |
| return 2; |
| } |
| MemoryBuffer &InputFile = *InputFileOrErr.get(); |
| |
| if (InputFile.getBufferSize() == 0 && !AllowEmptyInput) { |
| errs() << "FileCheck error: '" << InputFilename << "' is empty.\n"; |
| DumpCommandLine(argc, argv); |
| return 2; |
| } |
| |
| SmallString<4096> InputFileBuffer; |
| StringRef InputFileText = FC.CanonicalizeFile(InputFile, InputFileBuffer); |
| |
| SM.AddNewSourceBuffer(MemoryBuffer::getMemBuffer( |
| InputFileText, InputFile.getBufferIdentifier()), |
| SMLoc()); |
| |
| std::vector<FileCheckDiag> Diags; |
| int ExitCode = FC.checkInput(SM, InputFileText, |
| DumpInput == DumpInputNever ? nullptr : &Diags) |
| ? EXIT_SUCCESS |
| : 1; |
| if (DumpInput == DumpInputAlways || |
| (ExitCode == 1 && DumpInput == DumpInputFail)) { |
| errs() << "\n" |
| << "Input file: " << InputFilename << "\n" |
| << "Check file: " << CheckFilename << "\n" |
| << "\n" |
| << "-dump-input=help explains the following input dump.\n" |
| << "\n"; |
| std::vector<InputAnnotation> Annotations; |
| unsigned LabelWidth; |
| BuildInputAnnotations(SM, CheckFileBufferID, ImpPatBufferIDRange, Diags, |
| Annotations, LabelWidth); |
| DumpAnnotatedInput(errs(), Req, DumpInputFilter, DumpInputContext, |
| InputFileText, Annotations, LabelWidth); |
| } |
| |
| return ExitCode; |
| } |
