From: Sean Silva Date: Thu, 21 Mar 2013 23:40:38 +0000 (+0000) Subject: Add TableGen ctags(1) emitter and helper script. X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=cdd21b333a9b495f41fda81b5240360dcba06f7a;p=platform%2Fupstream%2Fllvm.git Add TableGen ctags(1) emitter and helper script. To use this in conjunction with exuberant ctags to generate a single combined tags file, run tblgen first and then $ ctags --append [...] Since some identifiers have corresponding definitions in C++ code, it can be useful (if using vim) to also use cscope, and :set cscopetagorder=1 so that :tag X will preferentially select the tablegen symbol, while :cscope find g X will always find the C++ symbol. Patch by Kevin Schoedel! (a couple small formatting changes courtesy of clang-format) llvm-svn: 177682 --- diff --git a/llvm/utils/TableGen/CMakeLists.txt b/llvm/utils/TableGen/CMakeLists.txt index d0f44be..3ee1974 100644 --- a/llvm/utils/TableGen/CMakeLists.txt +++ b/llvm/utils/TableGen/CMakeLists.txt @@ -33,4 +33,5 @@ add_tablegen(llvm-tblgen LLVM X86DisassemblerTables.cpp X86ModRMFilters.cpp X86RecognizableInstr.cpp + CTagsEmitter.cpp ) diff --git a/llvm/utils/TableGen/CTagsEmitter.cpp b/llvm/utils/TableGen/CTagsEmitter.cpp new file mode 100644 index 0000000..8bf7778 --- /dev/null +++ b/llvm/utils/TableGen/CTagsEmitter.cpp @@ -0,0 +1,99 @@ +//===- CTagsEmitter.cpp - Generate ctags-compatible index ------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This tablegen backend emits an index of definitions in ctags(1) format. +// A helper script, utils/TableGen/tdtags, provides an easier-to-use +// interface; run 'tdtags -H' for documentation. +// +//===----------------------------------------------------------------------===// + +#define DEBUG_TYPE "ctags-emitter" + +#include "llvm/Support/SourceMgr.h" +#include "llvm/Support/MemoryBuffer.h" +#include "llvm/TableGen/Error.h" +#include "llvm/TableGen/Record.h" +#include "llvm/TableGen/TableGenBackend.h" +#include +#include +#include +using namespace llvm; + +namespace llvm { extern SourceMgr SrcMgr; } + +namespace { + +class Tag { +private: + const std::string *Id; + SMLoc Loc; +public: + Tag(const std::string &Name, const SMLoc Location) + : Id(&Name), Loc(Location) {} + int operator<(const Tag &B) const { return *Id < *B.Id; } + void emit(raw_ostream &OS) const { + int BufferID = SrcMgr.FindBufferContainingLoc(Loc); + MemoryBuffer *CurMB = SrcMgr.getBufferInfo(BufferID).Buffer; + const char *BufferName = CurMB->getBufferIdentifier(); + std::pair LineAndColumn = SrcMgr.getLineAndColumn(Loc); + OS << *Id << "\t" << BufferName << "\t" << LineAndColumn.first << "\n"; + } +}; + +class CTagsEmitter { +private: + RecordKeeper &Records; +public: + CTagsEmitter(RecordKeeper &R) : Records(R) {} + + void run(raw_ostream &OS); + +private: + static SMLoc locate(const Record *R); +}; + +} // End anonymous namespace. + +SMLoc CTagsEmitter::locate(const Record *R) { + ArrayRef Locs = R->getLoc(); + if (Locs.empty()) { + SMLoc NullLoc; + return NullLoc; + } + return Locs.front(); +} + +void CTagsEmitter::run(raw_ostream &OS) { + const std::map &Classes = Records.getClasses(); + const std::map &Defs = Records.getDefs(); + std::vector Tags; + // Collect tags. + Tags.reserve(Classes.size() + Defs.size()); + for (std::map::const_iterator I = Classes.begin(), + E = Classes.end(); + I != E; ++I) + Tags.push_back(Tag(I->first, locate(I->second))); + for (std::map::const_iterator I = Defs.begin(), + E = Defs.end(); + I != E; ++I) + Tags.push_back(Tag(I->first, locate(I->second))); + // Emit tags. + std::sort(Tags.begin(), Tags.end()); + OS << "!_TAG_FILE_FORMAT\t1\t/original ctags format/\n"; + OS << "!_TAG_FILE_SORTED\t1\t/0=unsorted, 1=sorted, 2=foldcase/\n"; + for (std::vector::const_iterator I = Tags.begin(), E = Tags.end(); + I != E; ++I) + I->emit(OS); +} + +namespace llvm { + +void EmitCTags(RecordKeeper &RK, raw_ostream &OS) { CTagsEmitter(RK).run(OS); } + +} // End llvm namespace. diff --git a/llvm/utils/TableGen/TableGen.cpp b/llvm/utils/TableGen/TableGen.cpp index 510f254..b5c3ca7 100644 --- a/llvm/utils/TableGen/TableGen.cpp +++ b/llvm/utils/TableGen/TableGen.cpp @@ -40,7 +40,8 @@ enum ActionType { GenTgtIntrinsic, PrintEnums, PrintSets, - GenOptParserDefs + GenOptParserDefs, + GenCTags }; namespace { @@ -82,6 +83,8 @@ namespace { "Print expanded sets for testing DAG exprs"), clEnumValN(GenOptParserDefs, "gen-opt-parser-defs", "Generate option definitions"), + clEnumValN(GenCTags, "gen-ctags", + "Generate ctags-compatible index"), clEnumValEnd)); cl::opt @@ -161,6 +164,9 @@ bool LLVMTableGenMain(raw_ostream &OS, RecordKeeper &Records) { } break; } + case GenCTags: + EmitCTags(Records, OS); + break; } return false; diff --git a/llvm/utils/TableGen/TableGenBackends.h b/llvm/utils/TableGen/TableGenBackends.h index cc99092..28b626e 100644 --- a/llvm/utils/TableGen/TableGenBackends.h +++ b/llvm/utils/TableGen/TableGenBackends.h @@ -75,5 +75,6 @@ void EmitRegisterInfo(RecordKeeper &RK, raw_ostream &OS); void EmitSubtarget(RecordKeeper &RK, raw_ostream &OS); void EmitMapTable(RecordKeeper &RK, raw_ostream &OS); void EmitOptParser(RecordKeeper &RK, raw_ostream &OS); +void EmitCTags(RecordKeeper &RK, raw_ostream &OS); } // End llvm namespace diff --git a/llvm/utils/TableGen/tdtags b/llvm/utils/TableGen/tdtags new file mode 100644 index 0000000..5214485 --- /dev/null +++ b/llvm/utils/TableGen/tdtags @@ -0,0 +1,453 @@ +#!/bin/sh +#===-- tdtags - TableGen tags wrapper ---------------------------*- sh -*-===# +# vim:set sts=2 sw=2 et: +#===----------------------------------------------------------------------===# +# +# The LLVM Compiler Infrastructure +# +# This file is distributed under the University of Illinois Open Source +# License. See LICENSE.TXT for details. +# +#===----------------------------------------------------------------------===# +# +# This is a wrapper script to simplify generating ctags(1)-compatible index +# files for target .td files. Run tdtags -H for more documentation. +# +# For portability, this script is intended to conform to IEEE Std 1003.1-2008. +# +#===----------------------------------------------------------------------===# + +SELF=${0##*/} + +usage() { +cat < ] tdfile + or: $SELF [ ] -x recipe [arg ...] +OPTIONS + -H Display further help. + -a Append the tags to an existing tags file. + -f Write tags to the specified file (defaults to 'tags'). + -I Add the directory to the search path for tblgen include files. + -x Generate tags file(s) for a common use case: + -q Suppress $TBLGEN error messages. + -v Be verbose; report progress. +END + usage_recipes +} + +usage_recipes() { +cat < ...] + - Generate a tags file for each specified LLVM code generator + target, or if none are specified, all targets. +END +} + +help() { +cat < Use the name for the tags file, rather than the default + "tags". If the is "-", then the tag index is written to + standard output. + -H Display this document. + -I Add the directory to the search path for 'include' + statements in tblgen source. + -x Run a canned recipe, rather than operate on specified files. + When '-x' is present, the first non-option argument is the + name of a recipe, and any further arguments are arguments to + that recipe. With no arguments, lists the available recipes. + -q Suppress $TBLGEN error messages. Not all .td files are well- + formed outside a specific context, so recipes will sometimes + produce error messages for certain .td files. These errors + do not affect the indices produced for valid files. + -v Be verbose; report progress. + +RECIPES + $SELF -x all + Produce a tags file in every directory in the LLVM source tree + that contains any .td files. + $SELF -x here + Produce a tags file from .td files in the current directory. + $SELF -x recurse + Produce a tags file in every directory that contains any .td + files, in and under the current directory. + $SELF -x target [ ...] + Produce a tags file for each named code generator target, or + if none are named, for all code generator targets. +END +} + +# Temporary file management. +# +# Since SUS sh(1) has no arrays, this script makes extensive use of +# temporary files. The follow are 'global' and used to carry information +# across functions: +# $TMP:D Include directories. +# $TMP:I Included files. +# $TMP:T Top-level files, that are not included by another. +# $TMP:W Directories in which to generate tags (Worklist). +# For portability to OS X, names must not differ only in case. +# +TMP=${TMPDIR:-/tmp}/$SELF:$$ +trap "rm -f $TMP*" 0 +trap exit 1 2 13 15 +>$TMP:D + +td_dump() +{ + if [ $OPT_VERBOSE -gt 1 ] + then + printf '===== %s =====\n' "$1" + cat <"$1" + fi +} + +# Escape the arguments, taken as a whole. +e() { + printf '%s' "$*" | + sed -e "s/'/'\\\\''/g" -e "1s/^/'/" -e "\$s/\$/'/" +} + +# Determine whether the given directory contains at least one .td file. +dir_has_td() { + for i in $1/*.td + do + [ -f "$i" ] && return 0 + done + return 1 +} + +# Partition the supplied list of files, plus any files included from them, +# into two groups: +# $TMP:T Top-level files, that are not included by another. +# $TMP:I Included files. +# Add standard directories to the include paths in $TMP:D if this would +# benefit the any of the included files. +td_prep() { + >$TMP:E + >$TMP:J + for i in *.td + do + [ "x$i" = 'x*.td' ] && return 1 + if [ -f "$i" ] + then + printf '%s\n' "$i" >>$TMP:E + sed -n -e 's/include[[:space:]]"\(.*\)".*/\1/p' <"$i" >>$TMP:J + else + printf >&2 '%s: "%s" not found.\n' "$SELF" "$i" + exit 7 + fi + done + sort -u <$TMP:E >$TMP:X + sort -u <$TMP:J >$TMP:I + # A file that exists but is not included is toplevel. + comm -23 $TMP:X $TMP:I >$TMP:T + td_dump $TMP:T + td_dump $TMP:I + # Check include files. + while read i + do + [ -f "$i" ] && continue + while read d + do + [ -f "$d/$i" ] && break + done <$TMP:D + if [ -z "$d" ] + then + # See whether this include file can be found in a common location. + for d in $LLVM_SRC_ROOT/include \ + $LLVM_SRC_ROOT/tools/clang/include + do + if [ -f "$d/$i" ] + then + printf '%s\n' "$d" >>$TMP:D + break + fi + done + fi + done <$TMP:I + td_dump $TMP:D +} + +# Generate tags for the list of files in $TMP:T. +td_tag() { + # Collect include directories. + inc= + while read d + do + inc="${inc}${inc:+ }$(e "-I=$d")" + done <$TMP:D + + if [ $OPT_VERBOSE -ne 0 ] + then + printf >&2 'In "%s",\n' "$PWD" + fi + + # Generate tags for each file. + n=0 + while read i + do + if [ $OPT_VERBOSE -ne 0 ] + then + printf >&2 ' generating tags from "%s"\n' "$i" + fi + n=$((n + 1)) + t=$(printf '%s:A:%05u' "$TMP" $n) + eval $TBLGEN --gen-ctags $inc "$i" >$t 2>$TMP:F + [ $OPT_NOTBLGENERR -eq 1 ] || cat $TMP:F + done <$TMP:T + + # Add existing tags if requested. + if [ $OPT_APPEND -eq 1 -a -f "$OPT_TAGSFILE" ] + then + if [ $OPT_VERBOSE -ne 0 ] + then + printf >&2 ' and existing tags from "%s"\n' "$OPT_TAGSFILE" + fi + n=$((n + 1)) + t=$(printf '%s:A:%05u' "$TMP" $n) + sed -e '/^!_TAG_/d' <"$OPT_TAGSFILE" | sort -u >$t + fi + + # Merge tags. + if [ $n = 1 ] + then + mv -f "$t" $TMP:M + else + sort -m -u $TMP:A:* >$TMP:M + fi + + # Emit tags. + if [ x${OPT_TAGSFILE}x = x-x ] + then + cat $TMP:M + else + if [ $OPT_VERBOSE -ne 0 ] + then + printf >&2 ' into "%s".\n' "$OPT_TAGSFILE" + fi + mv -f $TMP:M "$OPT_TAGSFILE" + fi +} + +# Generate tags for the current directory. +td_here() { + td_prep + [ -s $TMP:T ] || return 1 + td_tag +} + +# Generate tags for the current directory, and report an error if there are +# no .td files present. +do_here() +{ + if ! td_here + then + printf >&2 '%s: Nothing to do here.\n' "$SELF" + exit 1 + fi +} + +# Generate tags for all .td files under the current directory. +do_recurse() +{ + td_find "$PWD" + td_dirs +} + +# Generate tags for all .td files in LLVM. +do_all() +{ + td_find "$LLVM_SRC_ROOT" + td_dirs +} + +# Generate tags for each directory in the worklist $TMP:W. +td_dirs() +{ + while read d + do + (cd "$d" && td_here) + done <$TMP:W +} + +# Find directories containing .td files within the specified directory, +# and record them in the worklist $TMP:W. +td_find() +{ + find -L "$1" -type f -name '*.td' | + sed -e 's:/[^/]*$::' | + sort -u >$TMP:W + td_dump $TMP:W +} + +# Generate tags for the specified code generator targets, or +# if there are no arguments, all targets. +do_targets() { + cd $LLVM_SRC_ROOT/lib/Target + if [ -z "$*" ] + then + td_find "$PWD" + else + # Check that every specified argument is a target directory; + # if not, list all target directories. + for d + do + if [ -d "$d" ] && dir_has_td "$d" + then + printf '%s/%s\n' "$PWD" "$d" + else + printf >&2 '%s: "%s" is not a target. Targets are:\n' "$SELF" "$d" + for d in * + do + [ -d "$d" ] || continue + dir_has_td "$d" && printf >&2 ' %s\n' "$d" + done + exit 2 + fi + done >$TMP:W + fi + td_dirs +} + +# Change to the directory at the top of the enclosing LLVM source tree, +# if possible. +llvm_src_root() { + while [ "$PWD" != / ] + do + # Use this directory if multiple notable subdirectories are present. + [ -d include/llvm -a -d lib/Target ] && return 0 + cd .. + done + return 1 +} + +# Ensure sort(1) behaves consistently. +LC_ALL=C +export LC_ALL + +# Globals. +TBLGEN=llvm-tblgen +LLVM_SRC_ROOT= + +# Command options. +OPT_TAGSFILE=tags +OPT_RECIPES=0 +OPT_APPEND=0 +OPT_VERBOSE=0 +OPT_NOTBLGENERR=0 + +while getopts 'af:hxqvHI:' opt +do + case $opt in + a) + OPT_APPEND=1 + ;; + f) + OPT_TAGSFILE="$OPTARG" + ;; + x) + OPT_RECIPES=1 + ;; + q) + OPT_NOTBLGENERR=1 + ;; + v) + OPT_VERBOSE=$((OPT_VERBOSE + 1)) + ;; + I) + printf '%s\n' "$OPTARG" >>$TMP:D + ;; + [hH]) + help + exit 0 + ;; + *) + usage >&2 + exit 4 + ;; + esac +done +shift $((OPTIND - 1)) + +# Handle the case where tdtags is a simple ctags(1)-like wrapper for tblgen. +if [ $OPT_RECIPES -eq 0 ] +then + if [ -z "$*" ] + then + help >&2 + exit 5 + fi + for i + do + printf '%s\n' "$i" + done >$TMP:T + td_tag + exit $? +fi + +# Find the directory at the top of the enclosing LLVM source tree. +if ! LLVM_SRC_ROOT=$(llvm_src_root && pwd) +then + printf >&2 '%s: Run from within the LLVM source tree.\n' "$SELF" + exit 3 +fi + +# Select canned actions. +RECIPE="$1" +case "$RECIPE" in +all) + shift + do_all + ;; +.|cwd|here) + shift + do_here + ;; +recurse) + shift + do_recurse + ;; +target) + shift + do_targets "$@" + ;; +*) + if [ -n "$RECIPE" ] + then + shift + printf >&2 '%s: Unknown recipe "-x %s". ' "$SELF" "$RECIPE" + fi + printf >&2 'Recipes:\n' + usage_recipes >&2 + printf >&2 'Run "%s -H" for help.\n' "$SELF" + exit 6 + ;; +esac + +exit $?