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-rw-r--r--runtime/indent/zig.vim80
1 files changed, 80 insertions, 0 deletions
diff --git a/runtime/indent/zig.vim b/runtime/indent/zig.vim
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+++ b/runtime/indent/zig.vim
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+" Vim filetype indent file
+" Language: Zig
+" Upstream: https://github.com/ziglang/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)
+
+let b:undo_indent = "setlocal cindent< cinkeys< cinoptions< indentexpr<"
+
+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 like
+ " },
+ " };
+ " try treating 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