support closures in dependency declarations

fixes #204

Author: RBusarow

.gitignore

@@ -63,3 +63,5 @@ libs/
 
 # all build dirs at any level
 **/build
+
+**/*.hprof

modulecheck-core/src/main/kotlin/modulecheck/core/internal/project2.kt

@@ -31,6 +31,7 @@ fun Project2.statementOrNullIn(
     .parse(dependentBuildFile)
     .firstNotNullOfOrNull { block ->
       block.getOrEmpty(path, configuration.value)
+        .takeIf { it.isNotEmpty() }
     }
     ?.firstOrNull()
     ?.statementWithSurroundingText

modulecheck-parsing/api/src/main/kotlin/modulecheck/parsing/DependenciesBlock.kt

@@ -107,10 +107,69 @@ abstract class DependenciesBlock(var contentString: String) {
       .orEmpty()
   }
 
-  protected abstract fun findOriginalStringIndex(parsedString: String): Int
+  /**
+   * Compares the target parsed string to the un-parsed lines of the original dependencies block,
+   * and returns the index of **the last row** which matches the parsed string.
+   *
+   * So, given the target:
+   * ```
+   * api(projects.foo.bar) {
+   *   exclude(group = "androidx.appcompat")
+   * }
+   * ```
+   * And given the dependencies lines:
+   * ```
+   * <blank line>
+   * // Remove leaking AppCompat dependency
+   * api(projects.foo.bar) {
+   *   exclude(group = "androidx.appcompat")
+   * }                                                // this is index 4
+   * api(libs.junit)
+   * ```
+   *
+   * This function would return index `4`, because rows 2-4 match the target parsed string.
+   *
+   * From this value, [getOriginalString] will return a multi-line string which includes
+   * the blank line and the comment.
+   */
+  private fun findLastMatchingRowIndex(parsedString: String): Int {
+    val targetLines = parsedString.lines()
+      .map { it.trimStart() }
+
+    // index is incremented at least once (if the first line is a match), so start at -1
+    var index = -1
+
+    var matched: Boolean
+
+    do {
+      val candidates = originalLines
+        .drop(index + 1)
+        .take(targetLines.size)
+        .map { it.trimStart() }
+
+      matched = candidates.zip(targetLines)
+        .all { (candidate, target) ->
+          originalLineMatchesParsed(candidate, target)
+        }
+
+      if (matched) {
+        index += targetLines.size
+      } else {
+
+        index++
+      }
+    } while (!matched)
+
+    return index
+  }
+
+  protected abstract fun originalLineMatchesParsed(
+    originalLine: String,
+    parsedString: String
+  ): Boolean
 
-  protected fun getOriginalString(parsedString: String): String {
-    val originalStringIndex = findOriginalStringIndex(parsedString)
+  private fun getOriginalString(parsedString: String): String {
+    val originalStringIndex = findLastMatchingRowIndex(parsedString)
 
     val originalStringLines = List(originalStringIndex + 1) {
       originalLines.removeFirst()

modulecheck-parsing/groovy-antlr/src/main/kotlin/modulecheck/parsing/groovy/antlr/GroovyDependenciesBlock.kt

@@ -21,13 +21,16 @@ class GroovyDependenciesBlock(
   contentString: String
 ) : DependenciesBlock(contentString) {
 
-  override fun findOriginalStringIndex(parsedString: String) = originalLines
-    .indexOfFirst { originalLine ->
-      originalLine.collapseBlockComments()
-        .trimEachLineStart()
-        .trimLinesLikeAntlr()
-        .lines()
-        .any { it.startsWith(parsedString) }
+  override fun originalLineMatchesParsed(
+    originalLine: String,
+    parsedString: String
+  ) = originalLine.collapseBlockComments()
+    .trimEachLineStart()
+    .trimLinesLikeAntlr()
+    .lines()
+    .any { str ->
+
+      str.startsWith(parsedString)
     }
 
   override fun toString(): String {

modulecheck-parsing/groovy-antlr/src/main/kotlin/modulecheck/parsing/groovy/antlr/GroovyDependencyBlockParser.kt

@@ -95,7 +95,6 @@ class GroovyDependencyBlockParser {
           val blockStatementVisitor = object : GroovyParserBaseVisitor<Unit>() {
 
             override fun visitBlockStatement(ctx: BlockStatementContext) {
-              super.visitBlockStatement(ctx)
 
               val config = ctx.start.text