first commit

plugin/filter/helpers.go

@@ -0,0 +1,25 @@
+package filter
+
+import (
+	"context"
+	"fmt"
+)
+
+// AppendConditions compiles the provided filters and appends the resulting SQL fragments and args.
+func AppendConditions(ctx context.Context, engine *Engine, filters []string, dialect DialectName, where *[]string, args *[]any) error {
+	for _, filterStr := range filters {
+		stmt, err := engine.CompileToStatement(ctx, filterStr, RenderOptions{
+			Dialect:           dialect,
+			PlaceholderOffset: len(*args),
+		})
+		if err != nil {
+			return err
+		}
+		if stmt.SQL == "" {
+			continue
+		}
+		*where = append(*where, fmt.Sprintf("(%s)", stmt.SQL))
+		*args = append(*args, stmt.Args...)
+	}
+	return nil
+}