add code examples

docs/analysisinput.md

@@ -1,40 +1,148 @@
 # Analysis Input
-i.e. What should be analyzed - an `AnalysisInputLocation` points to code input SootUp can analyze.
-We ship multiple Subclasses that can handle different code input.
+i.e. What should be analyzed. An `AnalysisInputLocation` points to code input SootUp can analyze.
+We ship multiple Implementations that can handle different input.
 
-You can specify a SourceType - which e.g. determines how far an analysis will go.
-Additionally you can specify a List of [BodyInterceptors](bodyinterceptors.md), which will optimize the raw Jimple IR that was transformed from the input.
+Additionally you can specify a SourceType. This determines what is considered e.g. in the CallGraphs generation.
+Further you can specify a List of [BodyInterceptors](bodyinterceptors.md), which will optimize the raw Jimple IR that was transformed from the input.
 
 ### Java Runtime
-points to the runtime library of the executing JVM.
-
-- Java <=8: `DefaultRTJaAnalysisInputLocation` points to the rt.jar of the executing JVM.
-- To include a different Java Runtime library point to any rt.jar via a `JavaClassPathAnalysisInputLocation` as its a usual .jar file.
-- Java >=9: `JRTFilesystemAnalysisInputLocation` points to the jigsawed java runtime of the executing jvm.  
+#### Java <=8
+`DefaultRTJaAnalysisInputLocation` points to the rt.jar of the executing JVM.
 
-If you have errors like Java.lang.String, Java.lang.Object, ... you are most likely missing this AnalysisInput.
+
+```java
+// points to the runtime library of the current jvm 
+AnalysisInputLocation inputLocation = new DefaultRTJaAnalysisInputLocation();
+JavaView view = new JavaView(inputLocation);
+```
+
+To include a different Java Runtime library point to any rt.jar via a `JavaClassPathAnalysisInputLocation` as its a usual .jar file.
+
+#### Java >=9
+`JRTFilesystemAnalysisInputLocation` points to the jigsawed java runtime of the executing JVM.  
+
+```java
+// points to the runtime library of the current jvm 
+AnalysisInputLocation inputLocation = new JrtFileSystemAnalysisInputLocation(); 
+JavaView view = new JavaView(inputLocation);
+```
+
+
+!!! info  "If you have errors like Java.lang.String, Java.lang.Object, ... you are most likely missing this AnalysisInputLocation."
 
 ### Java Bytecode
 File-Extensions: `.class, .jar, .war`
 
-- `JavaClassPathAnalysisInputLocation` - its the equivalent of the classpath you would pass to the java executable i.e. point to root(s) of package(s).
+`JavaClassPathAnalysisInputLocation` its the equivalent of the classpath you would pass to the java executable i.e. point to root(s) of package(s).
+
+=== "Directory"
+    ```java
+    AnalysisInputLocation inputLocation =
+            new JavaClassPathAnalysisInputLocation("target/");  // points to
+    JavaView view = new JavaView(inputLocation);
+    ```
+
+=== ".jar File"
+    ```java
+    AnalysisInputLocation inputLocation = new JavaClassPathAnalysisInputLocation("myCode.jar");
+    JavaView view1 = new JavaView(inputLocation);
+
+    // if you want to analyze a specific language level of a multi release jar
+    AnalysisInputLocation inputLocation =
+            new MultiReleaseJarAnalysisInputLocation("myCode.jar", new JavaLanguage(10) );
+    JavaView view2 = new JavaView(inputLocation);
+    ```
+
+=== ".class File"
+    ```java
+    // if you omit the package structure while pointing to a file,
+    // you have to pass the omitted directories as a parameter
+    AnalysisInputLocation inputLocation = new PathBasedAnalysisInputLocation.
+                ClassFileBasedAnalysisInputLocation("Banana.class", "packageName.subPackage", SourceType.Application);
+    JavaView view = new JavaView(inputLocation);
+    ```
+
+=== "Complete class path"
+    ```java
+    String cp = "myCode.jar" + File.pathSeparator + "dependency.jar" + File.pathSeparator + "target/classes/";
+    AnalysisInputLocation inputLocation = new JavaClassPathAnalysisInputLocation(cp);
+    JavaView view = new JavaView(inputLocation);
+    ```
 
 ### Java Sourcecode
 File-Extensions: `.java`
 
-- `OTFCompileAnalysisInputLocation` - you can point directly to .java files or pass a String with Java sourcecode, SootUp delegates to the `JavaCompiler` and transform the bytecode from the compiler to Jimple
-- `JavaSourcePathInputLocation` [***experimental!***]{Has huge problems with exceptional flow!} - points to a directory that is the root source directory (containing the package directory structure).
+`OTFCompileAnalysisInputLocation`
+you can point directly to .java files or pass a String with Java sourcecode, SootUp delegates to the `JavaCompiler` and transform the bytecode from the compiler to Jimple
+
+=== "Single File"
+    ```java
+    AnalysisInputLocation inputLocation = new OTFCompileAnalysisInputLocation("Banana.java");
+    JavaView view = new JavaView(inputLocation);
+    ```
+
+=== "Multiple Files"
+    ```java
+    List<Path> files = Arrays.asList(Paths.get("Apple.java"), Paths.get("Banana.java"));
+    AnalysisInputLocation inputLocation = new OTFCompileAnalysisInputLocation(files);
+    JavaView view = new JavaView(inputLocation);
+    ```
+=== "File as String"
+    ```java
+    String content = "public class B{ }";
+    AnalysisInputLocation location = new OTFCompileAnalysisInputLocation("B.java", content );
+    JavaView view = new JavaView(location);
+    ```
+
+`JavaSourcePathInputLocation` [***experimental!***]{Has huge problems with exceptional flow!} - points to a directory that is the root source directory (containing the package directory structure).
 
 ### Jimple
 File-Extensions: `.jimple`
 
-- `JimpleAnalysisInputLocation` - needs a Path to a .jimple file or a directory.
+`JimpleAnalysisInputLocation` needs a Path to a .jimple file or a directory.
+
+```java
+Path path = Paths.get("Banana.java");
+AnalysisInputLocation jimpleLocation = new JimpleAnalysisInputLocation(path);
+JavaView view = new JavaView(jimpleLocation);
+```
+
 
 ### Android Bytecode
 File-Extensions: `.apk`
 
-- `ApkAnalysisInputLocation` - currently uses dex2jar internally - A SootUp solution to directly generate Jimple is WIP!
+`ApkAnalysisInputLocation` currently uses dex2jar internally - A SootUp solution to directly generate Jimple is WIP!
+
+```java
+Path path = Paths.get("Banana.apk");
+AnalysisInputLocation inputLocation = new ApkAnalysisInputLocation(path);
+JavaView view = new JavaView(inputLocation);
+```
+
+
+
+### Combining Multiple AnalysisInputLocations
+But what if I want to point to multiple AnalysisInputLocations?
+
+```java
+AnalysisInputLocation mainJar = new JavaClassPathAnalysisInputLocation("myCode.jar");
+AnalysisInputLocation jarA = new JavaClassPathAnalysisInputLocation("dependencyA.jar");
+AnalysisInputLocation jarB = new JavaClassPathAnalysisInputLocation("dependencyB.jar");
+
+List<AnalysisInputLocation> inputlocationList = Arrays.asList(mainJar, jarA, jarB);
+
+JavaView view = new JavaView(inputlocationList);
+```
+!!! note "Of course you can combine different types of `AnalysisInputLocation`s as well!"
+
+
+### Maven Project as Analysis Input in SootUp
+This uses `#!shell mvn compile` + `JavaClassPathAnalysisInputLocation` under the hood to include a maven project.
+```java
+    TODO: let the code sail with the upstream boat to this doc.
+```
 
+Unfortunately its harder to extract the path of the binary result of Gradle projects in a unified way for all kinds of models - If you have a solution are looking forward to merge your contribution :-). 
 
 ### Java cli arguments to configure SootUp
 We created a [Utility](tool_setup.md) that parses a String of java command line arguments and configures SootUp respectively.

sootup.java.bytecode/src/main/java/sootup/java/bytecode/inputlocation/DefaultRTJarAnalysisInputLocation.java

@@ -31,6 +31,9 @@
  * Refers to the rt.jar from <=Java8 as an AnalysisInputLocation requires: JAVA_HOME to be set
  * and expects the jar in the "lib/" subdirectory. If you need to include the rt.jar from a custom
  * Location please make use of JavaClassPathAnalysisInputLocation.
+ *
+ * <p>Info: This only works if you are running java 8 or older. Otherwise use {@link
+ * JrtFileSystemAnalysisInputLocation}.
  */
 public class DefaultRTJarAnalysisInputLocation extends ArchiveBasedAnalysisInputLocation {
 

sootup.java.bytecode/src/main/java/sootup/java/bytecode/inputlocation/OTFCompileAnalysisInputLocation.java

@@ -108,7 +108,6 @@ public SourceType getSourceType() {
   @Nonnull
   @Override
   public List<BodyInterceptor> getBodyInterceptors() {
-    // hint: all referenced inputlocations have the same settings
     return inputLocation.getBodyInterceptors();
   }