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80 lines
3.2 KiB
80 lines
3.2 KiB
# -*- mode: sh; sh-indentation: 4; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
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# Copyright (c) 2018 Sebastian Gniazdowski
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#
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# Chroma function for command `perl'. It highlights code passed to perl
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# with -e option - does syntax check by calling `perl -ce', then highlights
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# as correct or incorrect code.
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#
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# $1 - 0 or 1, denoting if it's first call to the chroma, or following one
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# $2 - the current token, also accessible by $__arg from the above scope -
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# basically a private copy of $__arg
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# $3 - a private copy of $_start_pos, i.e. the position of the token in the
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# command line buffer, used to add region_highlight entry (see man),
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# because Zsh colorizes by *ranges* in command line buffer
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# $4 - a private copy of $_end_pos from the above scope
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#
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(( next_word = 2 | 8192 ))
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local __first_call="$1" __wrd="$2" __start_pos="$3" __end_pos="$4"
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local __style
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integer __idx1 __idx2
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(( __first_call )) && {
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# Called for the first time - new command.
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# FAST_HIGHLIGHT is used because it survives between calls, and
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# allows to use a single global hash only, instead of multiple
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# global variables.
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FAST_HIGHLIGHT[chrome-perl-got-eswitch]=0
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return 1
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} || {
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# Following call, i.e. not the first one.
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# Check if chroma should end – test if token is of type
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# "starts new command", if so pass-through – chroma ends
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[[ "$__arg_type" = 3 ]] && return 2
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if (( in_redirection > 0 || this_word & 128 )) || [[ $__wrd == "<<<" ]]; then
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return 1
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fi
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if [[ "$__wrd" = -* && ${FAST_HIGHLIGHT[chroma-perl-got-subcommand]} -eq 0 ]]; then
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__style=${FAST_THEME_NAME}${${${__wrd:#--*}:+single-hyphen-option}:-double-hyphen-option}
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if [[ "$__wrd" = "-e" || ("$__wrd" = -*e* && "$__wrd" != --*) ]]; then
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FAST_HIGHLIGHT[chrome-perl-got-eswitch]=1
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fi
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else
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__wrd="${__wrd//\`/x}"
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__arg="${__arg//\`/x}"
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__wrd="${(Q)__wrd}"
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if (( FAST_HIGHLIGHT[chrome-perl-got-eswitch] == 1 )); then
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FAST_HIGHLIGHT[chrome-perl-got-eswitch]=0
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if perl -ce "$__wrd" >/dev/null 2>&1; then
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# Add correct-subtle style
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(( __start=__start_pos-${#PREBUFFER}, __end=__end_pos-${#PREBUFFER}, __start >= 0 )) && reply+=("$__start $__end ${FAST_HIGHLIGHT_STYLES[${FAST_THEME_NAME}correct-subtle]}")
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else
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# Add incorrect-subtle style
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(( __start=__start_pos-${#PREBUFFER}, __end=__end_pos-${#PREBUFFER}, __start >= 0 )) && reply+=("$__start $__end ${FAST_HIGHLIGHT_STYLES[${FAST_THEME_NAME}incorrect-subtle]}")
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fi
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else
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# Pass-through to the big-loop outside
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return 1
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fi
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fi
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}
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# Add region_highlight entry (via `reply' array)
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#
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# This is a common place of adding such entry, but any above
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# code can do it itself (and it does) and skip setting __style
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# to disable this code.
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[[ -n "$__style" ]] && (( __start=__start_pos-${#PREBUFFER}, __end=__end_pos-${#PREBUFFER}, __start >= 0 )) && reply+=("$__start $__end ${FAST_HIGHLIGHT_STYLES[$__style]}")
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# We aren't passing-through, do obligatory things ourselves
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(( this_word = next_word ))
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_start_pos=$_end_pos
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return 0
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# vim:ft=zsh:et:sw=4
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