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tags: Unify emacs and exuberant rules 

The emacs rules were constantly lagging behind the exuberant ones. Use a
single set of rules for both, to make the script easier to maintain.
The language understood by both tools is basic regular expression with
some limitations, which are documented in a comment. To be able to store
the rules in an array and easily iterate over it, the script requires
bash now. In the exuberant case, the change fixes some false matches in
<linux/page-flags.h> and also some too greedy matches in the arguments
of the DECLARE_*/DEFINE_* macros. In the emacs case, several previously
not working rules are matching now. Tested with these versions of the
tools:

  Exuberant Ctags 5.8, Copyright (C) 1996-2009 Darren Hiebert
  etags (GNU Emacs 24.5)

Signed-off-by: Michal Marek <mmarek@suse.com>
This commit is contained in:
Michal Marek 2015-10-14 11:48:06 +02:00
parent a1ccdb63b5
commit 93209d65c1
1 changed files with 109 additions and 93 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

202
scripts/tags.sh
View File

@ -1,4 +1,4 @@
#!/bin/sh
#!/bin/bash
# Generate tags or cscope files
# Usage tags.sh <mode>
#
@ -145,8 +145,108 @@ dogtags()
all_target_sources | gtags -i -f -
}
# Basic regular expressions with an optional /kind-spec/ for ctags and
# the following limitations:
# - No regex modifiers
# - Use \{0,1\} instead of \?, because etags expects an unescaped ?
# - \s is not working with etags, use a space or [ \t]
# - \w works, but does not match underscores in etags
# - etags regular expressions have to match at the start of a line;
# a ^[^#] is prepended by setup_regex unless an anchor is already present
regex_asm=(
'/^\(ENTRY\|_GLOBAL\)(\([[:alnum:]_\\]*\)).*/\2/'
)
regex_c=(
'/^SYSCALL_DEFINE[0-9](\([[:alnum:]_]*\).*/sys_\1/'
'/^COMPAT_SYSCALL_DEFINE[0-9](\([[:alnum:]_]*\).*/compat_sys_\1/'
'/^TRACE_EVENT(\([[:alnum:]_]*\).*/trace_\1/'
'/^TRACE_EVENT(\([[:alnum:]_]*\).*/trace_\1_rcuidle/'
'/^DEFINE_EVENT([^,)]*, *\([[:alnum:]_]*\).*/trace_\1/'
'/^DEFINE_EVENT([^,)]*, *\([[:alnum:]_]*\).*/trace_\1_rcuidle/'
'/^PAGEFLAG(\([[:alnum:]_]*\).*/Page\1/'
'/^PAGEFLAG(\([[:alnum:]_]*\).*/SetPage\1/'
'/^PAGEFLAG(\([[:alnum:]_]*\).*/ClearPage\1/'
'/^TESTSETFLAG(\([[:alnum:]_]*\).*/TestSetPage\1/'
'/^TESTPAGEFLAG(\([[:alnum:]_]*\).*/Page\1/'
'/^SETPAGEFLAG(\([[:alnum:]_]*\).*/SetPage\1/'
'/\<__SETPAGEFLAG(\([[:alnum:]_]*\).*/__SetPage\1/'
'/\<TESTCLEARFLAG(\([[:alnum:]_]*\).*/TestClearPage\1/'
'/\<__TESTCLEARFLAG(\([[:alnum:]_]*\).*/TestClearPage\1/'
'/\<CLEARPAGEFLAG(\([[:alnum:]_]*\).*/ClearPage\1/'
'/\<__CLEARPAGEFLAG(\([[:alnum:]_]*\).*/__ClearPage\1/'
'/^__PAGEFLAG(\([[:alnum:]_]*\).*/__SetPage\1/'
'/^__PAGEFLAG(\([[:alnum:]_]*\).*/__ClearPage\1/'
'/^PAGEFLAG_FALSE(\([[:alnum:]_]*\).*/Page\1/'
'/\<TESTSCFLAG(\([[:alnum:]_]*\).*/TestSetPage\1/'
'/\<TESTSCFLAG(\([[:alnum:]_]*\).*/TestClearPage\1/'
'/\<SETPAGEFLAG_NOOP(\([[:alnum:]_]*\).*/SetPage\1/'
'/\<CLEARPAGEFLAG_NOOP(\([[:alnum:]_]*\).*/ClearPage\1/'
'/\<__CLEARPAGEFLAG_NOOP(\([[:alnum:]_]*\).*/__ClearPage\1/'
'/\<TESTCLEARFLAG_FALSE(\([[:alnum:]_]*\).*/TestClearPage\1/'
'/\<__TESTCLEARFLAG_FALSE(\([[:alnum:]_]*\).*/__TestClearPage\1/'
'/^TASK_PFA_TEST([^,]*, *\([[:alnum:]_]*\))/task_\1/'
'/^TASK_PFA_SET([^,]*, *\([[:alnum:]_]*\))/task_set_\1/'
'/^TASK_PFA_CLEAR([^,]*, *\([[:alnum:]_]*\))/task_clear_\1/'
'/^DEF_MMIO_\(IN\|OUT\)_[XD](\([[:alnum:]_]*\),[^)]*)/\2/'
'/^DEBUGGER_BOILERPLATE(\([[:alnum:]_]*\))/\1/'
'/^DEF_PCI_AC_\(\|NO\)RET(\([[:alnum:]_]*\).*/\2/'
'/^PCI_OP_READ(\(\w*\).*[1-4])/pci_bus_read_config_\1/'
'/^PCI_OP_WRITE(\(\w*\).*[1-4])/pci_bus_write_config_\1/'
'/\<DEFINE_\(MUTEX\|SEMAPHORE\|SPINLOCK\)(\([[:alnum:]_]*\)/\2/v/'
'/\<DEFINE_\(RAW_SPINLOCK\|RWLOCK\|SEQLOCK\)(\([[:alnum:]_]*\)/\2/v/'
'/\<DECLARE_\(RWSEM\|COMPLETION\)(\([[:alnum:]_]\+\)/\2/v/'
'/\<DECLARE_BITMAP(\([[:alnum:]_]*\)/\1/v/'
'/\(^\|\s\)\(\|L\|H\)LIST_HEAD(\([[:alnum:]_]*\)/\3/v/'
'/\(^\|\s\)RADIX_TREE(\([[:alnum:]_]*\)/\2/v/'
'/\<DEFINE_PER_CPU([^,]*, *\([[:alnum:]_]*\)/\1/v/'
'/\<DEFINE_PER_CPU_SHARED_ALIGNED([^,]*, *\([[:alnum:]_]*\)/\1/v/'
'/\<DECLARE_WAIT_QUEUE_HEAD(\([[:alnum:]_]*\)/\1/v/'
'/\<DECLARE_\(TASKLET\|WORK\|DELAYED_WORK\)(\([[:alnum:]_]*\)/\2/v/'
'/\<DEFINE_PCI_DEVICE_TABLE(\([[:alnum:]_]*\)/\1/v/'
'/\(^\s\)OFFSET(\([[:alnum:]_]*\)/\2/v/'
'/\(^\s\)DEFINE(\([[:alnum:]_]*\)/\2/v/'
'/\<DEFINE_HASHTABLE(\([[:alnum:]_]*\)/\1/v/'
)
regex_kconfig=(
'/^[[:blank:]]*\(menu\|\)config[[:blank:]]\+\([[:alnum:]_]\+\)/\2/'
'/^[[:blank:]]*\(menu\|\)config[[:blank:]]\+\([[:alnum:]_]\+\)/CONFIG_\2/'
)
setup_regex()
{
local mode=$1 lang tmp=() r
shift
regex=()
for lang; do
case "$lang" in
asm) tmp=("${regex_asm[@]}") ;;
c) tmp=("${regex_c[@]}") ;;
kconfig) tmp=("${regex_kconfig[@]}") ;;
esac
for r in "${tmp[@]}"; do
if test "$mode" = "exuberant"; then
regex[${#regex[@]}]="--regex-$lang=${r}b"
else
# Remove ctags /kind-spec/
case "$r" in
/*/*/?/)
r=${r%?/}
esac
# Prepend ^[^#] unless already anchored
case "$r" in
/^*) ;;
*)
r="/^[^#]*${r#/}"
esac
regex[${#regex[@]}]="--regex=$r"
fi
done
done
}
exuberant()
{
setup_regex exuberant asm c
all_target_sources | xargs $1 -a \
-I __initdata,__exitdata,__initconst, \
-I __initdata_memblock \
@ -160,105 +260,21 @@ exuberant()
-I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL,ACPI_EXPORT_SYMBOL \
-I DEFINE_TRACE,EXPORT_TRACEPOINT_SYMBOL,EXPORT_TRACEPOINT_SYMBOL_GPL \
-I static,const \
--extra=+f --c-kinds=+px --langmap=c:+.h \
--regex-asm='/^(ENTRY|_GLOBAL)\(([^)]*)\).*/\2/' \
--regex-c='/^SYSCALL_DEFINE[[:digit:]]?\(([^,)]*).*/sys_\1/' \
--regex-c='/^COMPAT_SYSCALL_DEFINE[[:digit:]]?\(([^,)]*).*/compat_sys_\1/' \
--regex-c='/^TRACE_EVENT\(([^,)]*).*/trace_\1/' \
--regex-c='/^TRACE_EVENT\(([^,)]*).*/trace_\1_rcuidle/' \
--regex-c='/^DEFINE_EVENT\([^,)]*, *([^,)]*).*/trace_\1/' \
--regex-c='/^DEFINE_EVENT\([^,)]*, *([^,)]*).*/trace_\1_rcuidle/' \
--regex-c='/PAGEFLAG\(([^,)]*).*/Page\1/' \
--regex-c='/PAGEFLAG\(([^,)]*).*/SetPage\1/' \
--regex-c='/PAGEFLAG\(([^,)]*).*/ClearPage\1/' \
--regex-c='/TESTSETFLAG\(([^,)]*).*/TestSetPage\1/' \
--regex-c='/TESTPAGEFLAG\(([^,)]*).*/Page\1/' \
--regex-c='/SETPAGEFLAG\(([^,)]*).*/SetPage\1/' \
--regex-c='/__SETPAGEFLAG\(([^,)]*).*/__SetPage\1/' \
--regex-c='/TESTCLEARFLAG\(([^,)]*).*/TestClearPage\1/' \
--regex-c='/__TESTCLEARFLAG\(([^,)]*).*/TestClearPage\1/' \
--regex-c='/CLEARPAGEFLAG\(([^,)]*).*/ClearPage\1/' \
--regex-c='/__CLEARPAGEFLAG\(([^,)]*).*/__ClearPage\1/' \
--regex-c='/__PAGEFLAG\(([^,)]*).*/__SetPage\1/' \
--regex-c='/__PAGEFLAG\(([^,)]*).*/__ClearPage\1/' \
--regex-c='/PAGEFLAG_FALSE\(([^,)]*).*/Page\1/' \
--regex-c='/TESTSCFLAG\(([^,)]*).*/TestSetPage\1/' \
--regex-c='/TESTSCFLAG\(([^,)]*).*/TestClearPage\1/' \
--regex-c='/SETPAGEFLAG_NOOP\(([^,)]*).*/SetPage\1/' \
--regex-c='/CLEARPAGEFLAG_NOOP\(([^,)]*).*/ClearPage\1/' \
--regex-c='/__CLEARPAGEFLAG_NOOP\(([^,)]*).*/__ClearPage\1/' \
--regex-c='/TESTCLEARFLAG_FALSE\(([^,)]*).*/TestClearPage\1/' \
--regex-c='/__TESTCLEARFLAG_FALSE\(([^,)]*).*/__TestClearPage\1/' \
--regex-c='/TASK_PFA_TEST\([^,]*,\s*([^)]*)\)/task_\1/' \
--regex-c='/TASK_PFA_SET\([^,]*,\s*([^)]*)\)/task_set_\1/' \
--regex-c='/TASK_PFA_CLEAR\([^,]*,\s*([^)]*)\)/task_clear_\1/'\
--regex-c='/DEF_MMIO_(IN|OUT)_(X|D)\(([^,]*),\s*[^)]*\)/\3/' \
--regex-c='/DEBUGGER_BOILERPLATE\(([^,]*)\)/\1/' \
--regex-c='/DEF_PCI_AC_(NO)?RET\(([^,]*),.*/\2/' \
--regex-c='/PCI_OP_READ\((\w*).*[1-4]\)/pci_bus_read_config_\1/' \
--regex-c='/PCI_OP_WRITE\((\w*).*[1-4]\)/pci_bus_write_config_\1/' \
--regex-c='/DEFINE_(MUTEX|SEMAPHORE|SPINLOCK)\((\w*)/\2/v/' \
--regex-c='/DEFINE_(RAW_SPINLOCK|RWLOCK|SEQLOCK)\((\w*)/\2/v/' \
--regex-c='/DECLARE_(RWSEM|COMPLETION)\((\w+)/\2/v/' \
--regex-c='/DECLARE_BITMAP\((\w*)/\1/v/' \
--regex-c='/(^|\s)(|L|H)LIST_HEAD\((\w*)/\3/v/' \
--regex-c='/(^|\s)RADIX_TREE\((\w*)/\2/v/' \
--regex-c='/DEFINE_PER_CPU\(([^,]*,\s*)(\w*).*\)/\2/v/' \
--regex-c='/DEFINE_PER_CPU_SHARED_ALIGNED\(([^,]*,\s*)(\w*).*\)/\2/v/' \
--regex-c='/DECLARE_WAIT_QUEUE_HEAD\((\w*)/\1/v/' \
--regex-c='/DECLARE_(TASKLET|WORK|DELAYED_WORK)\((\w*)/\2/v/' \
--regex-c='/DEFINE_PCI_DEVICE_TABLE\((\w*)/\1/v/' \
--regex-c='/(^\s)OFFSET\((\w*)/\2/v/' \
--regex-c='/(^\s)DEFINE\((\w*)/\2/v/' \
--regex-c='/DEFINE_HASHTABLE\((\w*)/\1/v/'
--extra=+f --c-kinds=+px --langmap=c:+.h "${regex[@]}"
setup_regex exuberant kconfig
all_kconfigs | xargs $1 -a \
--langdef=kconfig --language-force=kconfig \
--regex-kconfig='/^[[:blank:]]*(menu|)config[[:blank:]]+([[:alnum:]_]+)/\2/' \
--regex-kconfig='/^[[:blank:]]*(menu|)config[[:blank:]]+([[:alnum:]_]+)/CONFIG_\2/'
--langdef=kconfig --language-force=kconfig "${regex[@]}"
}
emacs()
{
all_target_sources | xargs $1 -a \
--regex='/^\(ENTRY\|_GLOBAL\)(\([^)]*\)).*/\2/' \
--regex='/^SYSCALL_DEFINE[0-9]?(\([^,)]*\).*/sys_\1/' \
--regex='/^COMPAT_SYSCALL_DEFINE[0-9]?(\([^,)]*\).*/compat_sys_\1/' \
--regex='/^TRACE_EVENT(\([^,)]*\).*/trace_\1/' \
--regex='/^TRACE_EVENT(\([^,)]*\).*/trace_\1_rcuidle/' \
--regex='/^DEFINE_EVENT([^,)]*, *\([^,)]*\).*/trace_\1/' \
--regex='/^DEFINE_EVENT([^,)]*, *\([^,)]*\).*/trace_\1_rcuidle/' \
--regex='/PAGEFLAG(\([^,)]*\).*/Page\1/' \
--regex='/PAGEFLAG(\([^,)]*\).*/SetPage\1/' \
--regex='/PAGEFLAG(\([^,)]*\).*/ClearPage\1/' \
--regex='/TESTSETFLAG(\([^,)]*\).*/TestSetPage\1/' \
--regex='/TESTPAGEFLAG(\([^,)]*\).*/Page\1/' \
--regex='/SETPAGEFLAG(\([^,)]*\).*/SetPage\1/' \
--regex='/__SETPAGEFLAG(\([^,)]*\).*/__SetPage\1/' \
--regex='/TESTCLEARFLAG(\([^,)]*\).*/TestClearPage\1/' \
--regex='/__TESTCLEARFLAG(\([^,)]*\).*/TestClearPage\1/' \
--regex='/CLEARPAGEFLAG(\([^,)]*\).*/ClearPage\1/' \
--regex='/__CLEARPAGEFLAG(\([^,)]*\).*/__ClearPage\1/' \
--regex='/__PAGEFLAG(\([^,)]*\).*/__SetPage\1/' \
--regex='/__PAGEFLAG(\([^,)]*\).*/__ClearPage\1/' \
--regex='/PAGEFLAG_FALSE(\([^,)]*\).*/Page\1/' \
--regex='/TESTSCFLAG(\([^,)]*\).*/TestSetPage\1/' \
--regex='/TESTSCFLAG(\([^,)]*\).*/TestClearPage\1/' \
--regex='/SETPAGEFLAG_NOOP(\([^,)]*\).*/SetPage\1/' \
--regex='/CLEARPAGEFLAG_NOOP(\([^,)]*\).*/ClearPage\1/' \
--regex='/__CLEARPAGEFLAG_NOOP(\([^,)]*\).*/__ClearPage\1/' \
--regex='/TESTCLEARFLAG_FALSE(\([^,)]*\).*/TestClearPage\1/' \
--regex='/__TESTCLEARFLAG_FALSE(\([^,)]*\).*/__TestClearPage\1/' \
--regex='/TASK_PFA_TEST\([^,]*,\s*([^)]*)\)/task_\1/' \
--regex='/TASK_PFA_SET\([^,]*,\s*([^)]*)\)/task_set_\1/' \
--regex='/TASK_PFA_CLEAR\([^,]*,\s*([^)]*)\)/task_clear_\1/' \
--regex='/PCI_OP_READ(\([a-z]*[a-z]\).*[1-4])/pci_bus_read_config_\1/' \
--regex='/PCI_OP_WRITE(\([a-z]*[a-z]\).*[1-4])/pci_bus_write_config_\1/'\
--regex='/[^#]*DEFINE_HASHTABLE(\([^,)]*\)/\1/'
setup_regex emacs asm c
all_target_sources | xargs $1 -a "${regex[@]}"
all_kconfigs | xargs $1 -a \
--regex='/^[ \t]*\(\(menu\)*config\)[ \t]+\([a-zA-Z0-9_]+\)/\3/' \
--regex='/^[ \t]*\(\(menu\)*config\)[ \t]+\([a-zA-Z0-9_]+\)/CONFIG_\3/'
setup_regex emacs kconfig
all_kconfigs | xargs $1 -a "${regex[@]}"
}
xtags()