Delegate text coordinates to the tokens

pmd-lang-test/src/main/kotlin/net/sourceforge/pmd/lang/ast/test/NodeExtensions.kt

@@ -4,6 +4,8 @@
 
 package net.sourceforge.pmd.lang.ast.test
 
+import net.sourceforge.pmd.lang.ast.AbstractNode
+import net.sourceforge.pmd.lang.ast.GenericToken
 import net.sourceforge.pmd.lang.ast.Node
 import java.util.*
 
@@ -22,6 +24,16 @@ val Node.childIndex: Int
 val Node.parent: Node?
     get() = this.jjtGetParent()
 
+val Node.containingFile: Node
+    get() = generateSequence(this) { it.parent }.last()
+
+
+val Node.firstToken: GenericToken
+    get() = (this as AbstractNode).jjtGetFirstToken()
+
+val Node.lastToken: GenericToken
+    get() = (this as AbstractNode).jjtGetLastToken()
+
 
 fun Node.getChild(i: Int) = jjtGetChild(i)
 
@@ -84,4 +96,4 @@ data class TextRange(val beginPos: TextPosition, val endPos: TextPosition) {
     /** Result makes no sense if either of those text bounds is not ordered. */
     operator fun contains(other: TextRange): Boolean = other.beginPos in this && other.endPos in this
 
-}
+}