Support def

Author: utubo

autoload/vimlparser.vim

@@ -386,7 +386,9 @@ endfunction
 
 function s:JavascriptCompiler.compile_unlet(node)
   let list = map(a:node.list, 'self.compile(v:val)')
-  call self.out('delete %s;', join(list, ', '))
+  for v in list
+    call self.out('%s = undefined;', v)
+  endfor
 endfunction
 
 function s:JavascriptCompiler.compile_lockvar(node)
@@ -719,7 +721,13 @@ function s:JavascriptCompiler.compile_subscript(node)
 endfunction
 
 function s:JavascriptCompiler.compile_slice(node)
-  throw 'NotImplemented: slice'
+  let left = self.compile(a:node.left)
+  let start = a:node.rlist[0] is s:NIL ? '0' : self.compile(a:node.rlist[0])
+  if a:node.rlist[1] is s:NIL
+    return printf('%s.slice(%s)', left, start)
+  else
+    return printf('%s.slice(%s, %s + 1)', left, start, self.compile(a:node.rlist[1]))
+  endif
 endfunction
 
 function s:JavascriptCompiler.compile_dot(node)

js/jscompiler.vim

@@ -767,7 +767,10 @@ function s:PythonCompiler.compile_subscript(node)
 endfunction
 
 function s:PythonCompiler.compile_slice(node)
-  throw 'NotImplemented: slice'
+  let left = self.compile(a:node.left)
+  let rstart = a:node.rlist[0] is s:NIL ? '' : self.compile(a:node.rlist[0])
+  let rend = a:node.rlist[1] is s:NIL ? '' : (self.compile(a:node.rlist[1]) . ' + 1')
+  return printf('%s[%s:%s]', left, rstart, rend)
 endfunction
 
 function s:PythonCompiler.compile_dot(node)

js/vimlparser.js

@@ -0,0 +1,11 @@
+(excmd "vim9script")
+(def (A))
+(def (HasReturnType)
+  (return (dict (0 'a'))))
+(def (NoReturnType)
+  (return))
+(def (HasArgs a b c))
+(def (AllowedArgNames firstline lastline))
+(def (ArgsWithLineBreak a b))
+(def (NoArgsWithLineBreak))
+(def (g:GlobalScope))

py/pycompiler.vim

@@ -0,0 +1,31 @@
+vim9script
+
+def A()
+enddef
+
+def HasReturnType(): tuple<number, string>
+  return { 0: 'a' }
+enddef
+
+def NoReturnType()
+  return
+enddef
+
+def HasArgs(a: number, b: list<number>, c: tuple<string, list<number>>)
+enddef
+
+def AllowedArgNames(firstline: number, lastline: number)
+enddef
+
+def ArgsWithLineBreak(
+    a: number,
+    b: list<number>,
+)
+enddef
+
+def NoArgsWithLineBreak(
+)
+enddef
+
+def! g:GlobalScope()
+enddef

py/vimlparser.py

@@ -0,0 +1 @@
+vimlparser: E1003: Missing return value: line 3 col 3

test/test_def.ok

@@ -0,0 +1,4 @@
+vim9script
+def A(): number
+  return
+enddef

test/test_def.vim

@@ -0,0 +1 @@
+vimlparser: E1096: Returning a value in a function without a return type: line 3 col 3