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vim9script
# Vim indent file
# Language: gdscript (Godot game engine)
# Maintainer: Maxim Kim <habamax@gmail.com>
# Based on python indent file.
if exists("b:did_indent")
finish
endif
b:did_indent = 1
var undo_opts = "setl indentexpr< indentkeys< lisp< autoindent<"
if exists('b:undo_indent')
b:undo_indent ..= "|" .. undo_opts
else
b:undo_indent = undo_opts
endif
setlocal nolisp
setlocal autoindent
setlocal indentexpr=GDScriptIndent()
setlocal indentkeys+=<:>,=elif,=except
def GDScriptIndent(): number
# If this line is explicitly joined: If the previous line was also joined,
# line it up with that one, otherwise add two 'shiftwidth'
if getline(v:lnum - 1) =~ '\\$'
if v:lnum > 1 && getline(v:lnum - 2) =~ '\\$'
return indent(v:lnum - 1)
endif
return indent(v:lnum - 1) + (shiftwidth() * 2)
endif
# If the start of the line is in a string don't change the indent.
if has('syntax_items') && synIDattr(synID(v:lnum, 1, 1), "name") =~ "String$"
return -1
endif
# Search backwards for the previous non-empty line.
var plnum = prevnonblank(v:lnum - 1)
if plnum == 0
# This is the first non-empty line, use zero indent.
return 0
endif
var plindent = indent(plnum)
var plnumstart = plnum
# Get the line and remove a trailing comment.
# Use syntax highlighting attributes when possible.
var pline = getline(plnum)
var pline_len = strlen(pline)
if has('syntax_items')
# If the last character in the line is a comment, do a binary search for
# the start of the comment. synID() is slow, a linear search would take
# too long on a long line.
if synIDattr(synID(plnum, pline_len, 1), "name") =~ "\\(Comment\\|Todo\\)$"
var min = 1
var max = pline_len
while min < max
var col = (min + max) / 2
if synIDattr(synID(plnum, col, 1), "name") =~ "\\(Comment\\|Todo\\)$"
max = col
else
min = col + 1
endif
endwhile
pline = strpart(pline, 0, min - 1)
endif
else
var col = 0
while col < pline_len
if pline[col] == '#'
pline = strpart(pline, 0, col)
break
endif
col = col + 1
endwhile
endif
# When "inside" parenthesis: If at the first line below the parenthesis add
# one 'shiftwidth' ("inside" is simplified and not really checked)
# my_var = (
# a
# + b
# + c
# )
if pline =~ '[({\[]\s*$'
return indent(plnum) + shiftwidth()
endif
# If the previous line ended with a colon, indent this line
if pline =~ ':\s*$'
return plindent + shiftwidth()
endif
# If the previous line was a stop-execution statement...
if getline(plnum) =~ '^\s*\(break\|continue\|raise\|return\|pass\)\>'
# See if the user has already dedented
if indent(v:lnum) > indent(plnum) - shiftwidth()
# If not, recommend one dedent
return indent(plnum) - shiftwidth()
endif
# Otherwise, trust the user
return -1
endif
# If the current line begins with a keyword that lines up with "try"
if getline(v:lnum) =~ '^\s*\(except\|finally\)\>'
var lnum = v:lnum - 1
while lnum >= 1
if getline(lnum) =~ '^\s*\(try\|except\)\>'
var ind = indent(lnum)
if ind >= indent(v:lnum)
return -1 # indent is already less than this
endif
return ind # line up with previous try or except
endif
lnum = lnum - 1
endwhile
return -1 # no matching "try"!
endif
# If the current line begins with a header keyword, dedent
if getline(v:lnum) =~ '^\s*\(elif\|else\)\>'
# Unless the previous line was a one-liner
if getline(plnumstart) =~ '^\s*\(for\|if\|try\)\>'
return plindent
endif
# Or the user has already dedented
if indent(v:lnum) <= plindent - shiftwidth()
return -1
endif
return plindent - shiftwidth()
endif
return -1
enddef
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