feat: add java importing pattern util

.grit/patterns/java/_test_java_imports.md

@@ -0,0 +1,336 @@
+---
+title: import util for java
+tag: [java]
+---
+
+# Test remove statement
+
+```grit
+language java
+file($body) where {
+    $delete_import = "import a.b.Text;",
+    $body<: maybe contains remove_import_statement($delete_import)
+}
+```
+
+## test remove one import statements when there are more than one import statements
+
+```java
+package xx;
+
+import a.b.Text;
+import a.b.Form;
+
+public class AClass {
+    private Text str;
+
+    private Text getStr() {
+        return str;
+    }
+    private Text setStr(Form form) {
+        this.str = form.toText();
+    }
+}
+```
+
+```java
+package xx;
+
+import a.b.Form;
+
+public class AClass {
+    private Text str;
+
+    private Text getStr() {
+        return str;
+    }
+    private Text setStr(Form form) {
+        this.str = form.toText();
+    }
+}
+```
+
+## test remove one import statements when there are only one import statements
+
+```java
+package xx;
+
+import a.b.Text;
+
+public class AClass {
+    private Text str;
+
+    private Text getStr() {
+        return str;
+    }
+    private Text setStr(Text text) {
+        this.str = text;
+    }
+}
+```
+
+```java
+package xx;
+
+
+public class AClass {
+    private Text str;
+
+    private Text getStr() {
+        return str;
+    }
+    private Text setStr(Text text) {
+        this.str = text;
+    }
+}
+```
+
+# Test ensure_import_statement
+
+```grit
+language java
+file($body) where {
+    $new_import = "import a.b.Text;",
+    $body<: maybe contains ensure_import_statement($new_import)
+}
+```
+
+## test `ensure_import_statement` when there already have one
+
+```java
+package xx;
+
+import a.b.Text;
+
+public class AClass {
+    private Text str;
+
+    private Text getStr() {
+        return str;
+    }
+    private Text setStr(Text text) {
+        this.str = text;
+    }
+}
+```
+
+```java
+package xx;
+
+import a.b.Text;
+
+public class AClass {
+    private Text str;
+
+    private Text getStr() {
+        return str;
+    }
+    private Text setStr(Text text) {
+        this.str = text;
+    }
+}
+```
+
+
+
+## test `ensure_import_statement` when missing import
+
+```java
+package xx;
+
+public class AClass {
+    private Text str;
+
+    private Text getStr() {
+        return str;
+    }
+    private Text setStr(Text text) {
+        this.str = text;
+    }
+}
+```
+
+```java
+package xx;
+
+import a.b.Text;
+
+public class AClass {
+    private Text str;
+
+    private Text getStr() {
+        return str;
+    }
+    private Text setStr(Text text) {
+        this.str = text;
+    }
+}
+```
+
+# Testing `replace_import_statement`
+
+```grit
+language java
+replace_import_statement("import a.b.Text;", "import a.c.Text;")
+```
+
+## test `replace_import_statement` when have
+
+```java
+package xx;
+
+import a.b.Text;
+import a.b.Form;
+
+import a.b.Text;
+
+public class AClass {
+    private Text str;
+
+    private Text getStr() {
+        return str;
+    }
+    private Text setStr(Form form) {
+        this.str = form.toText();
+    }
+}
+```
+
+```java
+package xx;
+
+import a.c.Text;
+import a.b.Form;
+
+import a.c.Text;
+
+public class AClass {
+    private Text str;
+
+    private Text getStr() {
+        return str;
+    }
+    private Text setStr(Form form) {
+        this.str = form.toText();
+    }
+}
+```
+
+
+# Testing `remove_duplicate_import_statements`
+
+```grit
+language java
+remove_duplicate_import_statements()
+```
+
+## test `remove_duplicate_import_statements` when there are some duplicates
+
+```java
+package xx;
+
+import a.b.Text;
+import a.b.Form;
+
+import a.b.Text;
+
+public class AClass {
+    private Text str;
+
+    private Text getStr() {
+        return str;
+    }
+    private Text setStr(Form form) {
+        this.str = form.toText();
+    }
+}
+```
+
+```java
+package xx;
+
+import a.b.Text;
+import a.b.Form;
+
+
+public class AClass {
+    private Text str;
+
+    private Text getStr() {
+        return str;
+    }
+    private Text setStr(Form form) {
+        this.str = form.toText();
+    }
+}
+```
+
+## test `replace_import_statement` when there are none duplicates
+
+```java
+package xx;
+
+import a.b.Text;
+import a.b.Form;
+
+public class AClass {
+    private Text str;
+
+    private Text getStr() {
+        return str;
+    }
+    private Text setStr(Form form) {
+        this.str = form.toText();
+    }
+}
+```
+
+```java
+package xx;
+
+import a.b.Text;
+import a.b.Form;
+
+public class AClass {
+    private Text str;
+
+    private Text getStr() {
+        return str;
+    }
+    private Text setStr(Form form) {
+        this.str = form.toText();
+    }
+}
+```
+
+## test `replace_import_statement` when there are none import statements.
+
+```java
+package xx;
+
+public class AClass {
+    private Text str;
+
+    private Text getStr() {
+        return str;
+    }
+    private Text setStr(Form form) {
+        this.str = form.toText();
+    }
+}
+```
+
+```java
+package xx;
+
+public class AClass {
+    private Text str;
+
+    private Text getStr() {
+        return str;
+    }
+    private Text setStr(Form form) {
+        this.str = form.toText();
+    }
+}
+```

.grit/patterns/java/import.grit

@@ -0,0 +1,39 @@
+language java
+
+pattern remove_duplicate_import_statements() {
+    $_ where {
+        $GLOBAL_REMOVE_DUPLICATE_EXIST_IMPORTS = true,
+    }
+}
+
+pattern ensure_import_statement($import_decl) {
+    $_ where {
+        $GLOBAL_EXIST_IMPORTS <: not some $import_decl,
+        $GLOBAL_EXIST_IMPORTS += $import_decl,
+        $GLOBAL_NEW_FROM_IMPORTS += $import_decl,
+        $GLOBAL_NEW_FROM_IMPORTS = distinct($GLOBAL_NEW_FROM_IMPORTS)
+    }
+}
+
+pattern replace_import_statement($old_import, $new_import) {
+    $body where {
+        $find_all_import = [],
+        $body <: program(statements = $statements),
+        $statements <: bubble($find_all_import, $old_import, $new_import) every {
+            or {
+                bubble($old_import, $new_import, $find_all_import) import_declaration() as $this_import where {
+                    if ($this_import <: $old_import) {
+                        $this_import => `$new_import`
+                    }
+                },
+                $_
+            }
+        },
+    }
+}
+
+pattern remove_import_statement($import_statement) {
+    $_ where {
+        $GLOBAL_REMOVE_IMPORTS += $import_statement
+    }
+}