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Merge remote-tracking branch 'upstream/pr/159'

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* upstream/pr/159:
  Support literal newlines, part 2
  Update comments. No functional change.
  Highlight the first part of multiline strings correctly
  Support literal newlines
  Support backslash continuations
  Support multiline strings
  Refactoring, no functional change
This commit is contained in:
Daniel Shahaf 2015-09-04 17:27:03 +00:00
commit ea81e3df6e
5 changed files with 160 additions and 13 deletions
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52
highlighters/main/main-highlighter.zsh
View File

@ -60,6 +60,21 @@ _zsh_highlight_main_highlighter_predicate()
_zsh_highlight_buffer_modified
}
# Helper to deal with tokens crossing line boundaries.
_zsh_highlight_main_add_region_highlight() {
integer start=$1 end=$2
local style=$3
# The calculation was relative to $PREBUFFER$BUFFER, but region_highlight is
# relative to $BUFFER.
(( start -= $#PREBUFFER ))
(( end -= $#PREBUFFER ))
(( end < 0 )) && return # having end<0 would be a bug
(( start < 0 )) && start=0 # having start<0 is normal with e.g. multiline strings
region_highlight+=("$start $end $style")
}
# Main syntax highlighting function.
_zsh_highlight_main_highlighter()
{
@ -69,6 +84,7 @@ _zsh_highlight_main_highlighter()
typeset -a ZSH_HIGHLIGHT_TOKENS_COMMANDSEPARATOR
typeset -a ZSH_HIGHLIGHT_TOKENS_PRECOMMANDS
typeset -a ZSH_HIGHLIGHT_TOKENS_FOLLOWED_BY_COMMANDS
local buf="$PREBUFFER$BUFFER"
region_highlight=()
ZSH_HIGHLIGHT_TOKENS_COMMANDSEPARATOR=(
@ -82,12 +98,30 @@ _zsh_highlight_main_highlighter()
$ZSH_HIGHLIGHT_TOKENS_COMMANDSEPARATOR $ZSH_HIGHLIGHT_TOKENS_PRECOMMANDS
)
for arg in ${(z)BUFFER}; do
for arg in ${(z)buf}; do
local substr_color=0
local style_override=""
[[ $start_pos -eq 0 && $arg = 'noglob' ]] && highlight_glob=false
((start_pos+=${#BUFFER[$start_pos+1,-1]}-${#${BUFFER[$start_pos+1,-1]##[[:space:]]#}}))
((end_pos=$start_pos+${#arg}))
# advance $start_pos, skipping over whitespace in $buf.
if [[ $arg == ';' ]] ; then
# We're looking for either a semicolon or a newline, whichever comes
# first. Both of these are rendered as a ";" (SEPER) by the ${(z)..}
# flag.
#
# We can't use the (Z+n+) flag because that elides the end-of-command
# token altogether, so 'echo foo\necho bar' (two commands) becomes
# indistinguishable from 'echo foo echo bar' (one command with three
# words for arguments).
local needle=$'[;\n]'
integer offset=${${buf[start_pos+1,-1]}[(i)$needle]}
(( start_pos += offset ))
(( end_pos += offset ))
else
((start_pos+=${#buf[$start_pos+1,-1]}-${#${buf[$start_pos+1,-1]##([[:space:]]|\\[[:space:]])#}}))
((end_pos=$start_pos+${#arg}))
fi
# Parse the sudo command line
if $sudo; then
case "$arg" in
@ -140,13 +174,13 @@ _zsh_highlight_main_highlighter()
case $arg in
'--'*) style=$ZSH_HIGHLIGHT_STYLES[double-hyphen-option];;
'-'*) style=$ZSH_HIGHLIGHT_STYLES[single-hyphen-option];;
"'"*"'") style=$ZSH_HIGHLIGHT_STYLES[single-quoted-argument];;
'"'*'"') style=$ZSH_HIGHLIGHT_STYLES[double-quoted-argument]
region_highlight+=("$start_pos $end_pos $style")
"'"*) style=$ZSH_HIGHLIGHT_STYLES[single-quoted-argument];;
'"'*) style=$ZSH_HIGHLIGHT_STYLES[double-quoted-argument]
_zsh_highlight_main_add_region_highlight $start_pos $end_pos $style
_zsh_highlight_main_highlighter_highlight_string
substr_color=1
;;
'`'*'`') style=$ZSH_HIGHLIGHT_STYLES[back-quoted-argument];;
'`'*) style=$ZSH_HIGHLIGHT_STYLES[back-quoted-argument];;
*"*"*) $highlight_glob && style=$ZSH_HIGHLIGHT_STYLES[globbing] || style=$ZSH_HIGHLIGHT_STYLES[default];;
*) if _zsh_highlight_main_highlighter_check_path; then
style=$ZSH_HIGHLIGHT_STYLES[path]
@ -162,7 +196,7 @@ _zsh_highlight_main_highlighter()
fi
# if a style_override was set (eg in _zsh_highlight_main_highlighter_check_path), use it
[[ -n $style_override ]] && style=$ZSH_HIGHLIGHT_STYLES[$style_override]
[[ $substr_color = 0 ]] && region_highlight+=("$start_pos $end_pos $style")
[[ $substr_color = 0 ]] && _zsh_highlight_main_add_region_highlight $start_pos $end_pos $style
[[ -n ${(M)ZSH_HIGHLIGHT_TOKENS_FOLLOWED_BY_COMMANDS:#"$arg"} ]] && new_expression=true
start_pos=$end_pos
done
@ -235,6 +269,6 @@ _zsh_highlight_main_highlighter_highlight_string()
*) [[ $varflag -eq 0 ]] && continue ;;
esac
region_highlight+=("$j $k $style")
_zsh_highlight_main_add_region_highlight $j $k $style
done
}

36
highlighters/main/test-data/backslash-continuation.zsh Normal file
View File

@ -0,0 +1,36 @@
#!/usr/bin/env zsh
# -------------------------------------------------------------------------------------------------
# Copyright (c) 2015 zsh-syntax-highlighting contributors
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification, are permitted
# provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this list of conditions
# and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice, this list of
# conditions and the following disclaimer in the documentation and/or other materials provided
# with the distribution.
# * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
# may be used to endorse or promote products derived from this software without specific prior
# written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# -------------------------------------------------------------------------------------------------
# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
# vim: ft=zsh sw=2 ts=2 et
# -------------------------------------------------------------------------------------------------
PREBUFFER=$'echo \\\n'
BUFFER='noglob'
expected_region_highlight=(
"0 6 none" # 'noglob' highlighted as a string, not as a precomand
)

37
highlighters/main/test-data/multiline-string.zsh Normal file
View File

@ -0,0 +1,37 @@
#!/usr/bin/env zsh
# -------------------------------------------------------------------------------------------------
# Copyright (c) 2015 zsh-syntax-highlighting contributors
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification, are permitted
# provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this list of conditions
# and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice, this list of
# conditions and the following disclaimer in the documentation and/or other materials provided
# with the distribution.
# * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
# may be used to endorse or promote products derived from this software without specific prior
# written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# -------------------------------------------------------------------------------------------------
# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
# vim: ft=zsh sw=2 ts=2 et
# -------------------------------------------------------------------------------------------------
PREBUFFER=$'echo "foo1\n'
BUFFER='foo2" ./'
expected_region_highlight=(
"0 5 $ZSH_HIGHLIGHT_STYLES[double-quoted-argument]" # 'foo2"'
"7 8 $ZSH_HIGHLIGHT_STYLES[path]" # './'
)

40
highlighters/main/test-data/vanilla-newline.zsh Normal file
View File

@ -0,0 +1,40 @@
#!/usr/bin/env zsh
# -------------------------------------------------------------------------------------------------
# Copyright (c) 2015 zsh-syntax-highlighting contributors
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification, are permitted
# provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this list of conditions
# and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice, this list of
# conditions and the following disclaimer in the documentation and/or other materials provided
# with the distribution.
# * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
# may be used to endorse or promote products derived from this software without specific prior
# written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# -------------------------------------------------------------------------------------------------
# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
# vim: ft=zsh sw=2 ts=2 et
# -------------------------------------------------------------------------------------------------
PREBUFFER=$'echo foo; echo bar\n\n\n'
BUFFER=' echo baz; echo qux'
expected_region_highlight=(
"1 5 $ZSH_HIGHLIGHT_STYLES[builtin]" # echo
"6 8 $ZSH_HIGHLIGHT_STYLES[default]" # baz
"9 10 $ZSH_HIGHLIGHT_STYLES[default]" # semicolon
"12 15 $ZSH_HIGHLIGHT_STYLES[builtin]" # echo
"17 19 $ZSH_HIGHLIGHT_STYLES[default]" # qux
)

8
tests/test-highlighting.zsh
View File

@ -60,13 +60,13 @@ ZSH_HIGHLIGHT_HIGHLIGHTERS=($1)
for data_file in ${0:h:h}/highlighters/$1/test-data/*; do
# Load the data and prepare checking it.
BUFFER= ; expected_region_highlight=(); errors=()
PREBUFFER= BUFFER= ; expected_region_highlight=(); errors=()
echo -n "* ${data_file:t:r}: "
. $data_file
# Check the data declares $BUFFER.
if [[ ${#BUFFER} -eq 0 ]]; then
errors+=("'BUFFER' is not declared or blank.")
# Check the data declares $PREBUFFER or $BUFFER.
if [[ ${#PREBUFFER} -eq 0 && ${#BUFFER} -eq 0 ]]; then
errors+=("Either 'PREBUFFER' or 'BUFFER' must be declared and non-blank")
else
# Check the data declares $expected_region_highlight.