Define procedure bodies as ConditionalStatements rather than empty tokens

- this further consolidates with existing patterns

Author: aharpervc

src/ast/mod.rs

@@ -3826,7 +3826,7 @@ pub enum Statement {
         or_alter: bool,
         name: ObjectName,
         params: Option<Vec<ProcedureParam>>,
-        body: BeginEndStatements,
+        body: ConditionalStatements,
     },
     /// ```sql
     /// CREATE MACRO

src/parser/mod.rs

@@ -15475,27 +15475,13 @@ impl<'a> Parser<'a> {
         let params = self.parse_optional_procedure_parameters()?;
         self.expect_keyword_is(Keyword::AS)?;
 
-        let begin_token: AttachedToken = self
-            .expect_keyword(Keyword::BEGIN)
-            .map(AttachedToken)
-            .unwrap_or_else(|_| AttachedToken::empty());
-        let statements = self.parse_statement_list(&[Keyword::END])?;
-        let end_token = match &begin_token.0.token {
-            Token::Word(w) if w.keyword == Keyword::BEGIN => {
-                AttachedToken(self.expect_keyword(Keyword::END)?)
-            }
-            _ => AttachedToken::empty(),
-        };
+        let body = self.parse_conditional_statements(&[Keyword::END])?;
 
         Ok(Statement::CreateProcedure {
             name,
             or_alter,
             params,
-            body: BeginEndStatements {
-                begin_token,
-                statements,
-                end_token,
-            },
+            body,
         })
     }
 

tests/sqlparser_mssql.rs

@@ -106,8 +106,7 @@ fn parse_create_procedure() {
         ms().verified_stmt(sql),
         Statement::CreateProcedure {
             or_alter: true,
-            body: BeginEndStatements {
-                begin_token: AttachedToken::empty(),
+            body: ConditionalStatements::Sequence {
                 statements: vec![Statement::Query(Box::new(Query {
                     with: None,
                     limit_clause: None,
@@ -144,7 +143,6 @@ fn parse_create_procedure() {
                         flavor: SelectFlavor::Standard,
                     })))
                 }))],
-                end_token: AttachedToken::empty(),
             },
             params: Some(vec![
                 ProcedureParam {