orm: support lowercase operators like, in, not in etc (fix #25032) (#25035)

Author: Delta456

vlib/orm/orm_func.v

@@ -93,17 +93,18 @@ fn (mut ss MyTextScanner) next_tok() string {
 	mut ret := ''
 	ss.skip_whitespace()
 	ss.last_tok_start = ss.pos
+	ss_upper := ss.input.to_upper()
 
 	// check for longest token first
-	if ss.input[ss.pos..].starts_with('IS NOT NULL') {
+	if ss_upper[ss.pos..].starts_with('IS NOT NULL') {
 		ss.pos += 11
 		return 'IS NOT NULL'
 	}
-	if ss.input[ss.pos..].starts_with('IS NULL') {
+	if ss_upper[ss.pos..].starts_with('IS NULL') {
 		ss.pos += 7
 		return 'IS NULL'
 	}
-	if ss.input[ss.pos..].starts_with('NOT IN') {
+	if ss_upper[ss.pos..].starts_with('NOT IN') {
 		ss.pos += 6
 		return 'NOT IN'
 	}
@@ -186,7 +187,7 @@ fn (qb_ &QueryBuilder[T]) parse_conditions(conds string, params []Primitive) ! {
 				}
 			}
 			.op {
-				current_op = match tok {
+				current_op = match tok.to_upper() {
 					'=' {
 						OperationKind.eq
 					}

vlib/orm/orm_func_test.v

@@ -86,6 +86,12 @@ fn test_orm_func_where() {
 	qb.where('(salary >= ? AND (age <= ? OR title LIKE ?))', 50000, 35, '%Manager%')!
 	assert qb.where.parentheses == [[1, 2], [0, 2]]
 
+	// test lowercase `like`
+	qb.reset()
+	qb.where('(salary >= ? AND (age <= ? OR title like ?))', 50000, 35, '%Manager%')!
+	assert qb.where.parentheses == [[1, 2], [0, 2]]
+	assert qb.where.kinds == [.ge, .le, .orm_like]
+
 	// complex_nesting
 	qb.reset()
 	qb.where('((age = ? OR (salary > ? AND id < ?)) AND (name LIKE ?))', 1, 2, 3, '%test%')!
@@ -96,6 +102,12 @@ fn test_orm_func_where() {
 	qb.where('name IN ? AND age NOT IN ?', ['Tom'], [2])!
 	assert qb.where.fields == ['name', 'age']
 	assert qb.where.kinds == [.in, .not_in]
+
+	// lowercase in and not in
+	qb.reset()
+	qb.where('name in ? AND age not in ?', ['Tom'], [2])!
+	assert qb.where.fields == ['name', 'age']
+	assert qb.where.kinds == [.in, .not_in]
 }
 
 fn test_orm_func_stmts() {
@@ -503,6 +515,12 @@ fn test_orm_func_stmts() {
 	assert selected_users[0].name == 'Silly'
 	assert selected_users.len == 1
 
+	// complex select with lowercase `is null` and `like`
+	selected_users1 := qb.where('created_at is null && ((salary > ? && age < ?) || (role like ?))',
+		2000, 30, '%employee%')!.query()!
+	assert selected_users1[0].name == 'Silly'
+	assert selected_users1.len == 1
+
 	// chain where
 	and_where := qb.where('salary > ?', 2000)!.where('age > ?', 40)!.query()!
 	assert and_where.len == 1