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|
" Vim indent file
" Language: Falcon
" Maintainer: Steven Oliver <oliver.steven@gmail.com>
" Website: https://steveno@github.com/steveno/falconpl-vim.git
" Credits: Thanks to the ruby.vim authors, I borrow a lot!
" Previous Maintainer: Brent A. Fulgham <bfulgham@debian.org>
" -----------------------------------------------------------
" GetLatestVimScripts: 2752 1 :AutoInstall: falcon.vim
"======================================
" SETUP
"======================================
" Only load this indent file when no other was loaded.
if exists("b:did_indent")
finish
endif
let b:did_indent = 1
setlocal nosmartindent
" Setup indent function and when to use it
setlocal indentexpr=FalconGetIndent()
setlocal indentkeys=0{,0},0),0],!^F,o,O,e
setlocal indentkeys+==~case,=~catch,=~default,=~elif,=~else,=~end,=~\"
" Define the appropriate indent function but only once
if exists("*FalconGetIndent")
finish
endif
let s:cpo_save = &cpo
set cpo&vim
"======================================
" VARIABLES
"======================================
" Regex of syntax group names that are strings AND comments
let s:syng_strcom = '\<falcon\%(String\|StringEscape\|Comment\)\>'
" Regex of syntax group names that are strings
let s:syng_string = '\<falcon\%(String\|StringEscape\)\>'
" Keywords to indent on
let s:falcon_indent_keywords = '^\s*\(case\|catch\|class\|enum\|default\|elif\|else' .
\ '\|for\|function\|if.*"[^"]*:.*"\|if \(\(:\)\@!.\)*$\|loop\|object\|select' .
\ '\|switch\|try\|while\|\w*\s*=\s*\w*([$\)'
" Keywords to deindent on
let s:falcon_deindent_keywords = '^\s*\(case\|catch\|default\|elif\|else\|end\)'
"======================================
" FUNCTIONS
"======================================
" Check if the character at lnum:col is inside a string
function s:IsInStringOrComment(lnum, col)
return synIDattr(synID(a:lnum, a:col, 1), 'name') =~ s:syng_strcom
endfunction
"======================================
" INDENT ROUTINE
"======================================
function FalconGetIndent()
" Get the line to be indented
let cline = getline(v:lnum)
" Don't reindent comments on first column
if cline =~ '^\/\/'
return 0
endif
" Find the previous non-blank line
let lnum = prevnonblank(v:lnum - 1)
" Use zero indent at the top of the file
if lnum == 0
return 0
endif
let prevline=getline(lnum)
let ind = indent(lnum)
let chg = 0
" If we are in a multi-line string or line-comment, don't do anything
if s:IsInStringOrComment(v:lnum, matchend(cline, '^\s*') + 1 )
return indent('.')
endif
" If the start of the line equals a double quote, then indent to the
" previous lines first double quote
if cline =~? '^\s*"'
let chg = chg + &sw
endif
" If previous line started with a double quote and this one
" doesn't, unindent
if prevline =~? '^\s*"' && cline =~? '^\s*'
let chg = chg - &sw
endif
" Indent if proper keyword
if prevline =~? s:falcon_indent_keywords
let chg = &sw
" If previous line opened a parenthesis, and did not close it, indent
elseif prevline =~ '^.*(\s*[^)]*\((.*)\)*[^)]*$'
" Make sure this isn't just a function split between two lines
if prevline =~ ',\s*$'
return indent(prevnonblank(v:lnum - 1)) + &sw
else
return match(prevline, '(.*\((.*)\|[^)]\)*.*$') + 1
endif
elseif prevline =~ '^[^(]*)\s*$'
" This line closes a parenthesis. Finds opening.
let curr_line = prevnonblank(lnum - 1)
while curr_line >= 0
let str = getline(curr_line)
if str !~ '^.*(\s*[^)]*\((.*)\)*[^)]*$'
let curr_line = prevnonblank(curr_line - 1)
else
break
endif
endwhile
if curr_line < 0
return -1
endif
let ind = indent(curr_line)
endif
" If previous line ends in a semi-colon reset indent to previous
" lines setting
if prevline =~? ';\s*$' && prevnonblank(prevline) =~? ',\s*$'
return chg = chg - (2 * &sw)
endif
" If previous line ended in a comma, indent again
if prevline =~? ',\s*$'
let chg = chg + &sw
endif
" If previous line ended in a =>, indent again
if prevline =~? '=>\s*$'
let chg = chg + &sw
endif
" Deindent on proper keywords
if cline =~? s:falcon_deindent_keywords
let chg = chg - &sw
endif
return ind + chg
endfunction
" vim: set sw=4 sts=4 et tw=80 :
|
