Support leading comma in projections

travisbrown · travisbrown · commit ce2d47cd3352 · 2020-07-29T16:25:27.000+02:00
diff --git a/modules/parser/src/main/javacc/JavaCCParser.jj b/modules/parser/src/main/javacc/JavaCCParser.jj
@@ -601,7 +601,7 @@ Expr.Parsed PROJECTION_EXPRESSION(Expr.Parsed base, Token whsp0, Token whsp): {
   Token last;
 } {
   (
-    <BRACE_OPEN> [<WHSP>]
+    <BRACE_OPEN> [<WHSP>] [<COMMA> [<WHSP>]]
     (
       current=ANY_LABEL_OR_SOME() { labels.add(current); }
       [<WHSP>]

Original file line number	Diff line number	Diff line change
`@@ -601,7 +601,7 @@ Expr.Parsed PROJECTION_EXPRESSION(Expr.Parsed base, Token whsp0, Token whsp): {`
`601`	`601`	`Token last;`
`602`	`602`	`} {`
`603`	`603`	`(`
`604`		`- <BRACE_OPEN> [<WHSP>]`
	`604`	`+ <BRACE_OPEN> [<WHSP>] [<COMMA> [<WHSP>]]`
`605`	`605`	`(`
`606`	`606`	`current=ANY_LABEL_OR_SOME() { labels.add(current); }`
`607`	`607`	`[<WHSP>]`