update .wast files syntax highlighting (#12741)

[Christian Brabandt]

update .wast files syntax highlighting (#12741)

Commit: https://github.com/vim/vim/commit/8f566fdb1e3452c9104d9e7af402adbfbcb463c7
Author: Linda_pp <rh...@users.noreply.github.com>
Date: Wed Aug 9 23:45:52 2023 +0900

update .wast files syntax highlighting (https://github.com/vim/vim/issues/12741)

diff --git a/runtime/syntax/wast.vim b/runtime/syntax/wast.vim
index 245d5f6f1..113d65c5a 100644
--- a/runtime/syntax/wast.vim
+++ b/runtime/syntax/wast.vim
@@ -1,7 +1,7 @@
" Vim syntax file
" Language: WebAssembly
" Maintainer: rhysd <lin9...@yahoo.co.jp>
-" Last Change: Jul 29, 2018
+" Last Change: Aug 7, 2023
" For bugs, patches and license go to https://github.com/rhysd/vim-wasm

if exists("b:current_syntax")
@@ -11,33 +11,42 @@ endif
let s:cpo_save = &cpo
set cpo&vim

-syn cluster wastCluster contains=wastModule,wastInstWithType,wastInstGeneral,wastParamInst,wastControlInst,wastString,wastNamedVar,wastUnnamedVar,wastFloat,wastNumber,wastComment,wastList,wastType
+syn cluster wastNotTop contains=wastModule,wastInstWithType,wastInstGetSet,wastInstGeneral,wastParamInst,wastControlInst,wastSimdInst,wastString,wastNamedVar,wastUnnamedVar,wastFloat,wastNumber,wastComment,wastList,wastType

" Instructions
" https://webassembly.github.io/spec/core/text/instructions.html
" Note: memarg (align=,offset=) can be added to memory instructions
syn match wastInstWithType "\%((\s*\)\@<=\<\%(i32\|i64\|f32\|f64\|memory\)\.[[:alnum:]_]\+\%(/\%(i32\|i64\|f32\|f64\)\)\=\>\%(\s\+\%(align\|offset\)=\)\=" contained display
syn match wastInstGeneral "\%((\s*\)\@<=\<[[:alnum:]_]\+\>" contained display
+syn match wastInstGetSet "\%((\s*\)\@<=\<\%(local\|global\)\.\%(get\|set\)\>" contained display
" https://webassembly.github.io/spec/core/text/instructions.html#control-instructions
-syn match wastControlInst "\%((\s*\)\@<=\<\%(block\|end\|loop\|if\|else\|unreachable\|nop\|br\|br_if\|br_table\|return\|call\|call_indirect\)\>" contained display
+syn match wastControlInst "\%((\s*\)\@<=\<\%(block\|end\|loop\|if\|then\|else\|unreachable\|nop\|br\|br_if\|br_table\|return\|call\|call_indirect\)\>" contained display
" https://webassembly.github.io/spec/core/text/instructions.html#parametric-instructions
syn match wastParamInst "\%((\s*\)\@<=\<\%(drop\|select\)\>" contained display
+" SIMD instructions
+" https://webassembly.github.io/simd/core/text/instructions.html#simd-instructions
+syn match wastSimdInst "\<\%(v128\|i8x16\|i16x8\|i32x4\|i64x2\|f32x4\|f64x2)\)\.[[:alnum:]_]\+\%(\s\+\%(i8x16\|i16x8\|i32x4\|i64x2\|f32x4\|f64x2\)\)\=\>" contained display

" Identifiers
" https://webassembly.github.io/spec/core/text/values.html#text-id
-syn match wastNamedVar "$\+[[:alnum:]!#$%&'∗./:=><?@\\^_`~+-]*" contained display
+syn match wastNamedVar "$\+[[:alnum:]!#$%&'∗./:=><?@\\^_`~+-]*" contained contains=wastEscapeUtf8
syn match wastUnnamedVar "$\+\d\+[[:alnum:]!#$%&'∗./:=><?@\\^_`~+-]\@!" contained display
+" Presuming the source text is itself encoded correctly, strings that do not
+" contain any uses of hexadecimal byte escapes are always valid names.
+" https://webassembly.github.io/spec/core/text/values.html#names
+syn match wastEscapedUtf8 "\\\x\{1,6}" contained containedin=wastNamedVar display

" String literals
" https://webassembly.github.io/spec/core/text/values.html#strings
syn region wastString start=+"+ skip=+\\\\\|\\"+ end=+"+ contained contains=wastStringSpecial
-syn match wastStringSpecial "\\\x\x\|\\[tnr'\\\"]\|\\u\x\+" contained containedin=wastString
+syn match wastStringSpecial "\\\x\x\|\\[tnr'\\\"]\|\\u\x\+" contained containedin=wastString display

" Float literals
" https://webassembly.github.io/spec/core/text/values.html#floating-point
syn match wastFloat "\<-\=\d\%(_\=\d\)*\%(\.\d\%(_\=\d\)*\)\=\%([eE][-+]\=\d\%(_\=\d\)*\)\=" display contained
-syn match wastFloat "\<-\=0x\x\%(_\=\d\)*\%(\.\x\%(_\=\x\)*\)\=\%([pP][-+]\=\d\%(_\=\d\)*\)\=" display contained
+syn match wastFloat "\<-\=0x\x\%(_\=\x\)*\%(\.\x\%(_\=\x\)*\)\=\%([pP][-+]\=\d\%(_\=\d\)*\)\=" display contained
syn keyword wastFloat inf nan contained
+syn match wastFloat "nan:0x\x\%(_\=\x\)*" display contained

" Integer literals
" https://webassembly.github.io/spec/core/text/values.html#integers
@@ -46,14 +55,15 @@ syn match wastNumber "\<-\=0x\x\%(_\=\x\)*\>" display contained

" Comments
" https://webassembly.github.io/spec/core/text/lexical.html#comments
-syn region wastComment start=";;" end="$" display
+syn region wastComment start=";;" end="$"
syn region wastComment start="(;;\@!" end=";)"

-syn region wastList matchgroup=wastListDelimiter start="(;\@!" matchgroup=wastListDelimiter end=";\@<!)" contains=@wastCluster
+syn region wastList matchgroup=wastListDelimiter start="(;\@!" matchgroup=wastListDelimiter end=";\@<!)" contains=@wastNotTop

" Types
" https://webassembly.github.io/spec/core/text/types.html
-syn keyword wastType i64 i32 f64 f32 param result anyfunc mut contained
+" Note: `mut` was changed to `const`/`var` at Wasm 2.0
+syn keyword wastType i64 i32 f64 f32 param result funcref func externref extern mut v128 const var contained
syn match wastType "\%((\_s*\)\@<=func\%(\_s*[()]\)\@=" display contained

" Modules
@@ -61,13 +71,15 @@ syn match wastType "\%((\_s*\)\@<=func\%(\_s*[()]\)\@=" display conta
syn keyword wastModule module type export import table memory global data elem contained
syn match wastModule "\%((\_s*\)\@<=func\%(\_s\+\$\)\@=" display contained

-syn sync lines=100
+syn sync maxlines=100

hi def link wastModule PreProc
hi def link wastListDelimiter Delimiter
hi def link wastInstWithType Operator
+hi def link wastInstGetSet Operator
hi def link wastInstGeneral Operator
hi def link wastControlInst Statement
+hi def link wastSimdInst Operator
hi def link wastParamInst Conditional
hi def link wastString String
hi def link wastStringSpecial Special
@@ -77,6 +89,7 @@ hi def link wastFloat Float
hi def link wastNumber Number
hi def link wastComment Comment
hi def link wastType Type
+hi def link wastEscapedUtf8 Special

let b:current_syntax = "wast"

[Christian Brabandt]

On Mi, 09 Aug 2023, Christian Brabandt wrote:

[patch content]

Let me know if this is useful or not. I can disable this again, if you
think this is junk.

Thanks,
Christian
--
Gravity brings me down.