commit 6e4e34862c82b66fd939042018b334f66ee4847c (tree)
parent fdc73a51d168677ec9a1da68afbe30c8ddb6263a
Author: momumi <57862114+momumi@users.noreply.github.com>
Date: Sun, 22 Dec 2019 11:32:24 +1000
add automatic indent and comment handling
* adds `indent/zig.vim`: uses `cindent` as the basis for indent handling
and `indentexpr` to handle edgecases
* add `comments` setting for `//` and `///` comments and `\\` multiline
strings. The user can then use `formatoptions` to automatically prefix
multiline comments/strings.
Diffstat:
2 files changed, 81 insertions(+), 0 deletions(-)
diff --git a/ftplugin/zig.vim b/ftplugin/zig.vim
@@ -13,3 +13,8 @@ setlocal suffixesadd=.zig
setlocal suffixesadd=.zir
setlocal commentstring=//\ %s
setlocal makeprg=zig\ build
+
+if (has("comments"))
+ set comments=:///,://,:\\\\
+ set formatoptions=tcqor
+endif
diff --git a/indent/zig.vim b/indent/zig.vim
@@ -0,0 +1,76 @@
+" indent/zig.vim
+
+" Only load this indent file when no other was loaded.
+if exists("b:did_indent")
+ finish
+endif
+let b:did_indent = 1
+
+if (!has("cindent") || !has("eval"))
+ finish
+endif
+
+setlocal cindent
+
+" L0 -> 0 indent for jump labels (i.e. case statement in c).
+" j1 -> indenting for "javascript object declarations"
+" J1 -> see j1
+" w1 -> starting a new line with `(` at the same indent as `(`
+" m1 -> if `)` starts a line, match its indent with the first char of its
+" matching `(` line
+" (s -> use one indent, when starting a new line after a trailing `(`
+setlocal cinoptions=L0,m1,(s,j1,J1,l1
+
+" cinkeys: controls what keys trigger indent formatting
+" 0{ -> {
+" 0} -> }
+" 0) -> )
+" 0] -> ]
+" !^F -> make CTRL-F (^F) reindent the current line when typed
+" o -> when <CR> or `o` is used
+" O -> when the `O` command is used
+setlocal cinkeys=0{,0},0),0],!^F,o,O
+
+setlocal indentexpr=GetZigIndent(v:lnum)
+
+function! GetZigIndent(lnum)
+ let curretLineNum = a:lnum
+ let currentLine = getline(a:lnum)
+
+ " cindent doesn't handle multi-line strings properly, so force no indent
+ if currentLine =~ '^\s*\\\\.*'
+ return -1
+ endif
+
+ let prevLineNum = prevnonblank(a:lnum-1)
+ let prevLine = getline(prevLineNum)
+
+ " for lines that look line
+ " },
+ " };
+ " try treat them the same as a }
+ if prevLine =~ '\v^\s*},$'
+ if currentLine =~ '\v^\s*};$' || currentLine =~ '\v^\s*}$'
+ return indent(prevLineNum) - 4
+ endif
+ return indent(prevLineNum-1) - 4
+ endif
+ if currentLine =~ '\v^\s*},$'
+ return indent(prevLineNum) - 4
+ endif
+ if currentLine =~ '\v^\s*};$'
+ return indent(prevLineNum) - 4
+ endif
+
+
+ " cindent doesn't handle this case correctly:
+ " switch (1): {
+ " 1 => true,
+ " ~
+ " ^---- indents to here
+ if prevLine =~ '.*=>.*,$' && currentLine !~ '.*}$'
+ return indent(prevLineNum)
+ endif
+
+ return cindent(a:lnum)
+endfunction
