Add tests and formatting for function keyword in condition directive

Author: xterao

src/test/kotlin/org/domaframework/doma/intellij/formatter/SqlFormatterTest.kt

@@ -258,6 +258,10 @@ class SqlFormatterTest : BasePlatformTestCase() {
         formatSqlFile("ComparisonOperators.sql", "ComparisonOperators$formatDataPrefix.sql")
     }
 
+    fun testFunctionKeywordInConditionDirectiveFormatter() {
+        formatSqlFile("FunctionKeywordInConditionDirective.sql", "FunctionKeywordInConditionDirective$formatDataPrefix.sql")
+    }
+
     private fun formatSqlFile(
         beforeFile: String,
         afterFile: String,

src/test/testData/sql/formatter/ComparisonOperators_format.sql

@@ -35,7 +35,7 @@ SELECT id
          -- Range operators
          date_range @> current_date AS in_range
        , int_range && int4range(1
-                          , 10) AS overlaps_range
+                                , 10) AS overlaps_range
        ,
          -- Geometric operators
          point <-> point '(0,0)' AS distance_from_origin

src/test/testData/sql/formatter/FunctionKeywordInConditionDirective.sql

@@ -0,0 +1,21 @@
+-- PostgreSQL
+SELECT extract(YEAR FROM e.hire_date) AS hire_year FROM employees e
+SELECT extract(MONTH FROM e.hire_date) AS hire_month FROM employees e
+-- Oracle
+SELECT TO_DATE('2024-01-01', 'YYYY-MM-DD') AS new_year FROM dual
+SELECT TO_CHAR(e.hire_date, 'YYYY-MM') AS hire_month FROM employees e
+SELECT CURRENT_DATE FROM dual
+--MySQL
+SELECT YEAR(e.hire_date) AS hire_year FROM employees e
+SELECT MONTH(e.hire_date) AS hire_month FROM employees e
+SELECT DATE_FORMAT(e.hire_date, '%Y-%m') AS hire_month FROM employees e
+-- SQL Server
+    SELECT DATEPART(YEAR, e.hire_date) AS hire_year FROM employees e
+SELECT DATEPART(MONTH, e.hire_date) AS hire_month FROM employees e
+SELECT CONVERT(VARCHAR, e.hire_date, 23) FROM employees e
+-- SQLite
+    SELECT strftime('%Y', e.hire_date) AS hire_year FROM employees e
+SELECT strftime('%m', e.hire_date) AS hire_month FROM employees e
+-- Standard SQL
+SELECT CURRENT_TIMESTAMP FROM employees 
+SELECT CAST(e.salary AS INTEGER) FROM employees e

src/test/testData/sql/formatter/FunctionKeywordInConditionDirective_format.sql

@@ -0,0 +1,45 @@
+-- PostgreSQL
+SELECT extract(YEAR FROM e.hire_date) AS hire_year
+  FROM employees e
+SELECT extract(MONTH FROM e.hire_date) AS hire_month
+  FROM employees e
+-- Oracle
+SELECT TO_DATE('2024-01-01'
+               , 'YYYY-MM-DD') AS new_year
+  FROM dual
+SELECT TO_CHAR(e.hire_date
+               , 'YYYY-MM') AS hire_month
+  FROM employees e
+SELECT CURRENT_DATE
+  FROM dual
+--MySQL
+SELECT YEAR(e.hire_date) AS hire_year
+  FROM employees e
+SELECT MONTH(e.hire_date) AS hire_month
+  FROM employees e
+SELECT DATE_FORMAT(e.hire_date
+                   , '%Y-%m') AS hire_month
+  FROM employees e
+-- SQL Server
+SELECT DATEPART(YEAR
+                , e.hire_date) AS hire_year
+  FROM employees e
+SELECT DATEPART(MONTH
+                , e.hire_date) AS hire_month
+  FROM employees e
+SELECT CONVERT(VARCHAR
+               , e.hire_date
+               , 23)
+  FROM employees e
+-- SQLite
+SELECT strftime('%Y'
+                , e.hire_date) AS hire_year
+  FROM employees e
+SELECT strftime('%m'
+                , e.hire_date) AS hire_month
+  FROM employees e
+-- Standard SQL
+SELECT CURRENT_TIMESTAMP
+  FROM employees
+SELECT CAST(e.salary AS INTEGER)
+  FROM employees e