fix(gradle): add compatibility for Gradle 3.2

The `canBeResolved` property was introduced in Gradle 3.3. This commit ensures compatibility with Gradle 3.2 by handling the MissingPropertyException when attempting to access this property.

Author: iseki0

module/gradle/print-dep.gradle

@@ -1,70 +1,72 @@
-def writeKey(java.io.Writer writer, String indent, boolean first, String k) {
-    writer.write(indent)
-    writer.write(first ? "- " : "  ")
-    writer.write(k)
-    writer.write(":")
-}
-
-def writeEntry(java.io.Writer writer, String indent, boolean first, String k, String v) {
-    writeKey(writer, indent, first, k)
-    writer.write(" \"")
-    writer.write(v)
-    writer.write("\"\n")
-}
+rootProject {
+    tasks.create("generateDependencyFile") {
+        doLast {
+            def writeKey = { java.io.Writer writer, String indent, boolean first, String k ->
+                writer.write(indent)
+                writer.write(first ? "- " : "  ")
+                writer.write(k)
+                writer.write(":")
+            }
 
-def writeDependencyTree(java.io.Writer writer, ResolvedDependency dependency, int depth, HashSet<Object> wrote) {
-    final def indent = "  ".repeat(depth * 2)
-    writeEntry(writer, indent, true, "group", dependency.moduleGroup)
-    writeEntry(writer, indent, false, "name", dependency.moduleName)
-    writeEntry(writer, indent, false, "version", dependency.moduleVersion)
-    final def children = dependency.children
-    try {
-        if (!children.isEmpty() && !wrote.contains(dependency)) {
-            wrote.add(dependency)
-            writeKey(writer, indent, false, "children")
-            writer.write("\n")
-            children.forEach { writeDependencyTree(writer, it, depth + 1, wrote) }
-        }
-    } finally {
-    }
-}
+            def writeEntry = { java.io.Writer writer, String indent, boolean first, String k, String v ->
+                writeKey(writer, indent, first, k)
+                writer.write(" \"")
+                writer.write(v)
+                writer.write("\"\n")
+            }
 
-def doProject(Project project) {
-    final def logger = project.logger
-    project.childProjects.values().forEach { doProject(it) }
-    logger.info("Begin processing {}...", project)
-    try {
-        final def yamlFile = new File(project.buildDir, "dependency-tree-mp.yaml")
-        logger.info("  file: {}", yamlFile)
-        yamlFile.parentFile.mkdirs()
-        final def writer = yamlFile.newWriter("utf-8")
-        try {
-            writer.write("project: \"${project.name}\"\n")
-            writer.write("configurations:\n")
-            for (final def configuration in project.configurations) {
-                if (!configuration.canBeResolved) continue
-                logger.info("  For {}", configuration)
-                final def resolved = configuration.getResolvedConfiguration()
-                writeEntry(writer, "  ", true, "configuration", configuration.name)
-                final def fld = resolved.firstLevelModuleDependencies
-                if (!fld.isEmpty()) {
-                    writeKey(writer, "  ", false, "dependencies")
-                    writer.write("\n")
-                    resolved.firstLevelModuleDependencies.forEach { writeDependencyTree(writer, it, 1, new HashSet()) }
+            def writeDependencyTree
+            writeDependencyTree = { java.io.Writer writer, ResolvedDependency dependency, int depth, HashSet<Object> wrote ->
+                final def indentBuilder = new StringBuilder(depth * 2)
+                for(int i = 0; i < depth*2; i++) indentBuilder.append("  ")
+                final def indent = indentBuilder.toString()
+                writeEntry(writer, indent, true, "group", dependency.moduleGroup)
+                writeEntry(writer, indent, false, "name", dependency.moduleName)
+                writeEntry(writer, indent, false, "version", dependency.moduleVersion)
+                final def children = dependency.children
+                try {
+                    if (!children.isEmpty() && !wrote.contains(dependency)) {
+                        wrote.add(dependency)
+                        writeKey(writer, indent, false, "children")
+                        writer.write("\n")
+                        children.forEach { writeDependencyTree(writer, it, depth + 1, wrote) }
+                    }
+                } finally {
                 }
             }
-        } finally {
-            writer.close()
-        }
-
-    } finally {
-        logger.info("End processing {}.", project)
-    }
-}
+            def doProject
+            doProject = { Project project ->
+                final def logger = project.logger
+                project.childProjects.values().forEach { doProject(it) }
+                logger.info("Begin processing {}...", project)
+                try {
+                    final def yamlFile = new File(project.buildDir, "dependency-tree-mp.yaml")
+                    logger.info("  file: {}", yamlFile)
+                    yamlFile.parentFile.mkdirs()
+                    final def writer = yamlFile.newWriter("utf-8")
+                    try {
+                        writer.write("project: \"${project.name}\"\n")
+                        writer.write("configurations:\n")
+                        for (final def configuration in project.configurations) {
+                            try { if (!configuration.canBeResolved) continue }catch(MissingPropertyException ignored){}
+                            logger.info("  For {}", configuration)
+                            final def resolved = configuration.getResolvedConfiguration()
+                            writeEntry(writer, "  ", true, "configuration", configuration.name)
+                            final def fld = resolved.firstLevelModuleDependencies
+                            if (!fld.isEmpty()) {
+                                writeKey(writer, "  ", false, "dependencies")
+                                writer.write("\n")
+                                resolved.firstLevelModuleDependencies.forEach { writeDependencyTree(writer, it, 1, new HashSet()) }
+                            }
+                        }
+                    } finally {
+                        writer.close()
+                    }
 
-rootProject {
-    tasks.create("generateDependencyFile") {
-        doLast {
+                } finally {
+                    logger.info("End processing {}.", project)
+                }
+            }
             doProject(project)
         }
     }