Add svelte support, closes #410

2 files changed, 62 insertions, 1 deletions

diff --git a/syntax/svelte.vim b/syntax/svelte.vim
new file mode 100644
index 00000000..e119d605
--- /dev/null
+++ b/syntax/svelte.vim
@@ -0,0 +1,61 @@
+if exists('g:polyglot_disabled') && index(g:polyglot_disabled, 'svelte') != -1
+  finish
+endif
+
+" Vim syntax file
+" Language:   Svelte 3 (HTML/JavaScript)
+" Author:     Evan Lecklider <evan@lecklider.com>
+" Maintainer: Evan Lecklide <evan@lecklider.com>
+" Depends:    pangloss/vim-javascript
+" URL:        https://github.com/evanleck/vim-svelte
+"
+" Like vim-jsx, this depends on the pangloss/vim-javascript syntax package (and
+" is tested against it exclusively). If you're using vim-polyglot (like I am),
+" then you're all set.
+
+if exists("b:current_syntax")
+  finish
+endif
+
+" Read HTML to begin with.
+runtime! syntax/html.vim
+unlet! b:current_syntax
+
+" Expand HTML tag names to include mixed case, periods, and colons.
+syntax match htmlTagName contained "\<[a-zA-Z:\.]*\>"
+
+" Special attributes that include some kind of binding e.g. "on:click",
+" "bind:something", etc.
+syntax match svelteKeyword "\<[a-z]\+:[a-zA-Z|]\+=" contained containedin=htmlTag
+
+" The "slot" attribute has special meaning.
+syntax keyword svelteKeyword slot contained containedin=htmlTag
+
+" According to vim-jsx, you can let jsBlock take care of ending the region.
+"   https://github.com/mxw/vim-jsx/blob/master/after/syntax/jsx.vim
+"
+" ALLBUT,htmlSpecialTagName keeps Vim from marking CSS regions as jsBlock.
+syntax region svelteExpression start="{" end="" contains=jsBlock,javascriptBlock containedin=htmlString,htmlTag,htmlArg,htmlValue,htmlH1,htmlH2,htmlH3,htmlH4,htmlH5,htmlH6,htmlHead,htmlTitle,htmlBoldItalicUnderline,htmlUnderlineBold,htmlUnderlineItalicBold,htmlUnderlineBoldItalic,htmlItalicUnderline,htmlItalicBold,htmlItalicBoldUnderline,htmlItalicUnderlineBold,htmlLink,htmlLeadingSpace,htmlBold,htmlBoldUnderline,htmlBoldItalic,htmlBoldUnderlineItalic,htmlUnderline,htmlUnderlineItalic,htmlItalic,htmlStrike,javaScript
+
+" Block conditionals.
+syntax match svelteConditional "#if" contained containedin=jsBlock,javascriptBlock
+syntax match svelteConditional "/if" contained containedin=jsBlock,javascriptBlock
+syntax match svelteConditional ":else if" contained containedin=jsBlock,javascriptBlock
+syntax match svelteConditional ":else" contained containedin=jsBlock,javascriptBlock
+
+" Block keywords.
+syntax match svelteKeyword "#await" contained containedin=jsBlock,javascriptBlock
+syntax match svelteKeyword "/await" contained containedin=jsBlock,javascriptBlock
+syntax match svelteKeyword ":catch" contained containedin=jsBlock,javascriptBlock
+syntax match svelteKeyword ":then" contained containedin=jsBlock,javascriptBlock
+syntax match svelteKeyword "@html" contained containedin=jsBlock,javascriptBlock
+
+" Repeat functions.
+syntax match svelteRepeat "#each" contained containedin=jsBlock,javascriptBlock
+syntax match svelteRepeat "/each" contained containedin=jsBlock,javascriptBlock
+
+highlight def link svelteConditional Conditional
+highlight def link svelteKeyword Keyword
+highlight def link svelteRepeat Repeat
+
+let b:current_syntax = "svelte"
diff --git a/syntax/zig.vim b/syntax/zig.vim
index 05e29d5f..a4a28af8 100644
--- a/syntax/zig.vim
+++ b/syntax/zig.vim
@@ -44,7 +44,7 @@ syn match zigBuiltinFn "\v\@(noInlineCall|bitOffsetOf|byteOffsetOf|OpaqueType|pa
 syn match zigBuiltinFn "\v\@(ptrToInt|rem|returnAddress|setCold)>"
 syn match zigBuiltinFn "\v\@(setRuntimeSafety|setEvalBranchQuota|setFloatMode)>"
 syn match zigBuiltinFn "\v\@(setGlobalLinkage|setGlobalSection|shlExact|This|hasDecl)>"
-syn match zigBuiltinFn "\v\@(shlWithOverflow|shrExact|sizeOf|sqrt|bswap|subWithOverflow|intCast|floatCast|intToFloat|floatToInt|boolToInt|errSetCast)>"
+syn match zigBuiltinFn "\v\@(shlWithOverflow|shrExact|sizeOf|sqrt|byteSwap|subWithOverflow|intCast|floatCast|intToFloat|floatToInt|boolToInt|errSetCast)>"
 syn match zigBuiltinFn "\v\@(truncate|typeId|typeInfo|typeName|typeOf|atomicRmw|bytesToSlice|sliceToBytes)>"
 syn match zigBuiltinFn "\v\@(intToError|errorToInt|intToEnum|enumToInt|setAlignStack|handle|bitreverse|Vector)>"