Apply @file:Suppress on all toplevel declarations

CHANGELOG.md

@@ -8,11 +8,10 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 * Do not add trailing comma in empty parameter/argument list with comments (`trailing-comma-on-call-site`, `trailing-comma-on-declaration-site`) ([#1602](https://github.com/pinterest/ktlint/issue/1602))
 * Fix class cast exception when specifying a non-string editorconfig setting in the default ".editorconfig" ([#1627](https://github.com/pinterest/ktlint/issue/1627))
 * Fix indentation before semi-colon when it is pushed down after inserting a trailing comma  ([#1609](https://github.com/pinterest/ktlint/issue/1609))
-
-Do not show deprecation warning about property "disabled_rules" when using CLi-parameter `--disabled-rules` ([#1599](https://github.com/pinterest/ktlint/issues/1599)) 
-
+* Do not show deprecation warning about property "disabled_rules" when using CLi-parameter `--disabled-rules` ([#1599](https://github.com/pinterest/ktlint/issues/1599))
 * Traversing directory hierarchy at Windows ([#1600](https://github.com/pinterest/ktlint/issues/1600))
 * Ant-style path pattern support ([#1601](https://github.com/pinterest/ktlint/issues/1601))
+* Apply `@file:Suppress` on all toplevel declarations ([#1623](https://github.com/pinterest/ktlint/issues/1623)) 
 
 ### Added
 

ktlint-core/src/main/kotlin/com/pinterest/ktlint/core/KtLint.kt

@@ -205,7 +205,9 @@ public object KtLint {
     ) {
         if (rule.shouldContinueTraversalOfAST()) {
             try {
-                rule.beforeVisitChildNodes(node, autoCorrect, emit)
+                if (!suppressedRegionLocator(node.startOffset, fqRuleId, node === rootNode)) {
+                    rule.beforeVisitChildNodes(node, autoCorrect, emit)
+                }
                 if (!rule.runsOnRootNodeOnly() && rule.shouldContinueTraversalOfAST()) {
                     node
                         .getChildren(null)
@@ -218,7 +220,9 @@ public object KtLint {
                             }
                         }
                 }
-                rule.afterVisitChildNodes(node, autoCorrect, emit)
+                if (!suppressedRegionLocator(node.startOffset, fqRuleId, node === rootNode)) {
+                    rule.afterVisitChildNodes(node, autoCorrect, emit)
+                }
             } catch (e: Exception) {
                 if (autoCorrect) {
                     // line/col cannot be reliably mapped as exception might originate from a node not present in the

ktlint-core/src/main/kotlin/com/pinterest/ktlint/core/internal/SuppressionLocatorBuilder.kt

@@ -44,7 +44,7 @@ internal object SuppressionLocatorBuilder {
     }
 
     private fun toSuppressedRegionsLocator(hintsList: List<SuppressionHint>): SuppressionLocator =
-        { offset, ruleId, isRoot ->
+        { offset, ruleId, isRoot -> // TODO: Remove unused parameter isRoot
             hintsList
                 .filter { offset in it.range }
                 .any { hint -> hint.disabledRules.isEmpty() || hint.disabledRules.contains(ruleId) }

ktlint-core/src/test/kotlin/com/pinterest/ktlint/core/KtLintTest.kt

@@ -1437,6 +1437,30 @@ class KtLintTest {
             )
         }
     }
+
+    @Test
+    fun `Issue 1623 - Given a file with multiple top-level declarations then a file suppression annotation should be applied on each top level declaration`() {
+        val code =
+            """
+            @file:Suppress("ktlint:auto-correct")
+            val foo = "${AutoCorrectErrorRule.STRING_VALUE_TO_BE_AUTOCORRECTED}" // Won't be auto corrected due to suppress annotation
+            val bar = "${AutoCorrectErrorRule.STRING_VALUE_TO_BE_AUTOCORRECTED}" // Won't be auto corrected due to suppress annotation
+            """.trimIndent()
+        val actualFormattedCode = KtLint.format(
+            KtLint.ExperimentalParams(
+                text = code,
+                ruleProviders = setOf(
+                    RuleProvider { AutoCorrectErrorRule() },
+                ),
+                userData = emptyMap(),
+                cb = { _, _ -> },
+                script = false,
+                editorConfigPath = null,
+                debug = false,
+            ),
+        )
+        assertThat(actualFormattedCode).isEqualTo(code)
+    }
 }
 
 private class DummyRuleWithCustomEditorConfigProperty :