Disabled parameter indentation checking (#26)

Author: shyiko

ktlint-ruleset-standard/src/main/kotlin/com/gihub/shyiko/ktlint/ruleset/standard/IndentationRule.kt

@@ -4,12 +4,13 @@ import com.github.shyiko.ktlint.core.Rule
 import org.jetbrains.kotlin.com.intellij.lang.ASTNode
 import org.jetbrains.kotlin.com.intellij.psi.PsiComment
 import org.jetbrains.kotlin.com.intellij.psi.PsiWhiteSpace
+import org.jetbrains.kotlin.psi.KtParameterList
 
 class IndentationRule : Rule("indent") {
 
     override fun visit(node: ASTNode, autoCorrect: Boolean,
             emit: (offset: Int, errorMessage: String, canBeAutoCorrected: Boolean) -> Unit) {
-        if (node is PsiWhiteSpace && !node.isPartOf(PsiComment::class)) {
+        if (node is PsiWhiteSpace && !node.isPartOf(PsiComment::class) && !node.isPartOf(KtParameterList::class)) {
             val split = node.getText().split("\n")
             if (split.size > 1) {
                 var offset = node.startOffset + split.first().length + 1

ktlint-ruleset-standard/src/test/kotlin/com/github/shyiko/ktlint/ruleset/standard/IndentationRuleTest.kt

@@ -37,4 +37,35 @@ class IndentationRuleTest {
             LintError(12, 1, "indent", "Unexpected indentation (3)")
         ))
     }
+
+    @Test
+    fun testParameterIndentationIsNotEnforced() {
+        assertThat(IndentationRule().lint(
+            """
+            data class D(val a: Any,
+                         val b: Any,
+                         val c: Any) {
+            }
+
+            data class D2(
+                val a: Any,
+                val b: Any,
+                val c: Any
+            ) {
+            }
+
+            fun f(val a: Any,
+                  val b: Any,
+                  val c: Any) {
+            }
+
+            fun f2(
+                val a: Any,
+                val b: Any,
+                val c: Any
+            ) {
+            }
+            """.trimIndent()
+        )).isEmpty()
+    }
 }