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-rw-r--r--runtime/indent/gdscript.vim148
1 files changed, 148 insertions, 0 deletions
diff --git a/runtime/indent/gdscript.vim b/runtime/indent/gdscript.vim
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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