feat: functions blocks, parenthesed JSON Expressions

- fixes JSQLParser#1792, the very complex example
- fixes JSQLParser#1477
- cosmetics

src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt

@@ -4067,7 +4067,6 @@ JsonExpression JsonExpression() : {
  CastExpression castExpr = null;
 }
 {
- { System.out.println("Complex:" + getAsBoolean(Feature.allowComplexParsing));}
  (
  LOOKAHEAD(3, {!interrupted}) expr=CaseWhenExpression()
  |
@@ -4092,7 +4091,6 @@ JsonExpression JsonExpression() : {
  LOOKAHEAD(ParenthesedExpression(), {getAsBoolean(Feature.allowComplexParsing)} ) expr = ParenthesedExpression()
  |
  LOOKAHEAD( 3, {getAsBoolean(Feature.allowComplexParsing) && !interrupted}) expr=ParenthesedSelect()
-
  )
 
  (
@@ -6714,6 +6712,9 @@ List<String> captureFunctionBody() {
  tok = getToken(1);
  int l = tokens.size();
  if( tok.kind == EOF || ( foundEnd && tok.kind == ST_SEMICOLON) ) {
+ if (tok.kind == ST_SEMICOLON) {
+ tokens.add(tok.image);
+ }
  break;
  } else if ( l>0 && ( tok.image.equals(".") || tokens.get(l-1).endsWith(".")) ) {
  tokens.set(l-1, tokens.get(l-1) + tok.image);

src/test/java/net/sf/jsqlparser/statement/select/SelectTest.java

@@ -61,7 +61,6 @@
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.logging.Level;
 
 import static net.sf.jsqlparser.test.TestUtils.assertDeparse;
 import static net.sf.jsqlparser.test.TestUtils.assertExpressionCanBeDeparsedAs;