output of smali AST tree

Complete.java

package com.example;

public class Complete {
    public int i;
    private String s;

    public Complete(int i, String s) {
        this.i = i;
        this.s = s;
    }

    public void throwsEx() throws Exception {
        if (i == 1)
            throw new Exception("i is 1");
    }

    public int withWhile() {
        int sum = 0;
        int i = 0;
        while (i < 10)
            sum += i;
        return sum;
    }

    public int withSwitch() {
        int sum = 0;
        switch (i) {
            case 1:
                return i;
            case 2:
                return i * 100;
            case 3:
                sum = i + 1;
            /* fall through */
            case 4:
                sum = i + 2;
                break;
            default:
                return i;
        }
        return sum;
    }
}

Complete.smali

.class public Lcom/example/Complete;
.super Ljava/lang/Object;
.source "Complete.java"


# instance fields
.field public i:I

.field private s:Ljava/lang/String;


# direct methods
.method public constructor <init>(ILjava/lang/String;)V
    .locals 0
    .parameter
    .parameter

    .prologue
    .line 7
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    .line 8
    iput p1, p0, Lcom/example/Complete;->i:I

    .line 9
    iput-object p2, p0, Lcom/example/Complete;->s:Ljava/lang/String;

    .line 10
    return-void
.end method


# virtual methods
.method public throwsEx()V
    .locals 2
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/lang/Exception;
        }
    .end annotation

    .prologue
    .line 13
    iget v0, p0, Lcom/example/Complete;->i:I

    const/4 v1, 0x1

    if-ne v0, v1, :cond_0

    .line 14
    new-instance v0, Ljava/lang/Exception;

    const-string v1, "i is 1"

    invoke-direct {v0, v1}, Ljava/lang/Exception;-><init>(Ljava/lang/String;)V

    throw v0

    .line 15
    :cond_0
    return-void
.end method

.method public withSwitch()I
    .locals 1

    .prologue
    .line 26
    .line 27
    iget v0, p0, Lcom/example/Complete;->i:I

    packed-switch v0, :pswitch_data_0

    .line 39
    iget v0, p0, Lcom/example/Complete;->i:I

    .line 41
    :goto_0
    return v0

    .line 29
    :pswitch_0
    iget v0, p0, Lcom/example/Complete;->i:I

    goto :goto_0

    .line 31
    :pswitch_1
    iget v0, p0, Lcom/example/Complete;->i:I

    mul-int/lit8 v0, v0, 0x64

    goto :goto_0

    .line 33
    :pswitch_2
    iget v0, p0, Lcom/example/Complete;->i:I

    add-int/lit8 v0, v0, 0x1

    .line 36
    :pswitch_3
    iget v0, p0, Lcom/example/Complete;->i:I

    add-int/lit8 v0, v0, 0x2

    .line 37
    goto :goto_0

    .line 27
    nop

    :pswitch_data_0
    .packed-switch 0x1
        :pswitch_0
        :pswitch_1
        :pswitch_2
        :pswitch_3
    .end packed-switch
.end method

.method public withWhile()I
    .locals 0

    .prologue
    .line 18
    .line 21
    :goto_0
    goto/32 :goto_0
.end method

Main.java

package com.example;

public class Main {
    public static void main(String[] args) {
        Complete com = new Complete(1, "Hello world");
        try {
            com.throwsEx();
        } catch (Exception e) {
            e.printStackTrace();
        }
        System.out.println(com.withWhile());
        System.out.println(com.withSwitch());
    }
}

Main.smali

.class public Lcom/example/Main;
.super Ljava/lang/Object;
.source "Main.java"


# direct methods
.method public constructor <init>()V
    .locals 0

    .prologue
    .line 3
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    return-void
.end method

.method public static main([Ljava/lang/String;)V
    .locals 3
    .parameter

    .prologue
    .line 5
    new-instance v0, Lcom/example/Complete;

    const/4 v1, 0x1

    const-string v2, "Hello world"

    invoke-direct {v0, v1, v2}, Lcom/example/Complete;-><init>(ILjava/lang/String;)V

    .line 7
    :try_start_0
    invoke-virtual {v0}, Lcom/example/Complete;->throwsEx()V
    :try_end_0
    .catch Ljava/lang/Exception; {:try_start_0 .. :try_end_0} :catch_0

    .line 11
    :goto_0
    sget-object v1, Ljava/lang/System;->out:Ljava/io/PrintStream;

    invoke-virtual {v0}, Lcom/example/Complete;->withWhile()I

    move-result v2

    invoke-virtual {v1, v2}, Ljava/io/PrintStream;->println(I)V

    .line 12
    sget-object v1, Ljava/lang/System;->out:Ljava/io/PrintStream;

    invoke-virtual {v0}, Lcom/example/Complete;->withSwitch()I

    move-result v0

    invoke-virtual {v1, v0}, Ljava/io/PrintStream;->println(I)V

    .line 13
    return-void

    .line 8
    :catch_0
    move-exception v1

    .line 9
    invoke-virtual {v1}, Ljava/lang/Exception;->printStackTrace()V

    goto :goto_0
.end method

output

(I_CLASS_DEF
 Lcom/example/Complete;
 (I_ACCESS_LIST public)
 (I_SUPER Ljava/lang/Object;)
 (I_SOURCE "Complete.java")

 (I_METHODS
  (I_METHOD
   <init>
   (I_METHOD_PROTOTYPE
    (I_METHOD_RETURN_TYPE V)
    I Ljava/lang/String;)
   (I_ACCESS_LIST public constructor)
   (I_LOCALS 0)
   I_LABELS
   I_PACKED_SWITCH_DECLARATIONS
   I_SPARSE_SWITCH_DECLARATIONS
   (I_STATEMENTS
    (I_STATEMENT_FORMAT35c_METHOD
     invoke-direct
     (I_REGISTER_LIST p0)
     Ljava/lang/Object;
     <init>
     (I_METHOD_PROTOTYPE (I_METHOD_RETURN_TYPE V)))
    (I_STATEMENT_FORMAT22c_FIELD iput p1 p0 Lcom/example/Complete; i I)
    (I_STATEMENT_FORMAT22c_FIELD iput-object p2 p0 Lcom/example/Complete; s Ljava/lang/String;)
    (I_STATEMENT_FORMAT10x return-void))
   I_CATCHES
   (I_PARAMETERS (I_PARAMETER I_ANNOTATIONS) (I_PARAMETER I_ANNOTATIONS))
   (I_ORDERED_DEBUG_DIRECTIVES (I_PROLOGUE 0) (I_LINE 7 0) (I_LINE 8 3) (I_LINE 9 5) (I_LINE 10 7))
    I_ANNOTATIONS)

    (I_METHOD throwsEx (I_METHOD_PROTOTYPE (I_METHOD_RETURN_TYPE V))
     (I_ACCESS_LIST public)
     (I_LOCALS 2)
     (I_LABELS (I_LABEL cond_0 13))
     I_PACKED_SWITCH_DECLARATIONS
     I_SPARSE_SWITCH_DECLARATIONS
     (I_STATEMENTS
      (I_STATEMENT_FORMAT22c_FIELD iget v0 p0 Lcom/example/Complete; i I)
      (I_STATEMENT_FORMAT11n const/4 v1 0x1)
      (I_STATEMENT_FFORMAT22t if-ne v0 v1 cond_0)
      (I_STATEMENT_FORMAT21c new-instance v0 Ljava/lang/Exception;)
      (I_STATEMENT_FORMAT21c_STRING const-string v1 "i is 1")
      (I_STATEMENT_FORMAT35c_METHOD
       invoke-direct
       (I_REGISTER_LIST v0 v1)
       Ljava/lang/Exception;
       <init>
       (I_METHOD_PROTOTYPE (I_METHOD_RETURN_TYPE V) Ljava/lang/String;))
      (I_STATEMENT_FORMAT11x throw v0)
      (I_STATEMENT_FORMAT10x return-void))
     I_CATCHES
     I_PARAMETERS
     (I_ORDERED_DEBUG_DIRECTIVES (I_PROLOGUE 0) (I_LINE 13 0) (I_LINE 14 5) (I_LINE 15 13))
     (I_ANNOTATIONS
      (I_ANNOTATION system (I_SUBANNOTATION Ldalvik/annotation/Throws; (I_ANNOTATION_ELEMENT value (I_ENCODED_ARRAY Ljava/lang/Exception;))))))

      (I_METHOD
       withSwitch
       (I_METHOD_PROTOTYPE (I_METHOD_RETURN_TYPE I))
       (I_ACCESS_LIST public)
       (I_LOCALS 1)
       (I_LABELS (I_LABEL goto_0 7) (I_LABEL pswitch_0 8) (I_LABEL pswitch_1 11) (I_LABEL pswitch_2 16) (I_LABEL pswitch_3 20) (I_LABEL pswitch_data_0 26))
       (I_PACKED_SWITCH_DECLARATIONS (I_PACKED_SWITCH_DECLARATION 2 pswitch_data_0))
       I_SPARSE_SWITCH_DECLARATIONS
       (I_STATEMENTS
        (I_STATEMENT_FORMAT22c_FIELD iget v0 p0 Lcom/example/Complete; i I)
        (I_STATEMENT_FORMAT31t packed-switch v0 pswitch_data_0)
        (I_STATEMENT_FORMAT22c_FIELD iget v0 p0 Lcom/example/Complete; i I)
        (I_STATEMENT_FORMAT11x return v0)
        (I_STATEMENT_FORMAT22c_FIELD iget v0 p0 Lcom/example/Complete; i I)
        (I_STATEMENT_FORMAT10t goto goto_0)
        (I_STATEMENT_FORMAT22c_FIELD iget v0 p0 Lcom/example/Complete; i I)
        (I_STATEMENT_FORMAT22b mul-int/lit8 v0 v0 0x64)
        (I_STATEMENT_FORMAT10t goto goto_0)
        (I_STATEMENT_FORMAT22c_FIELD iget v0 p0 Lcom/example/Complete; i I)
        (I_STATEMENT_FORMAT22b add-int/lit8 v0 v0 0x1)
        (I_STATEMENT_FORMAT22c_FIELD iget v0 p0 Lcom/example/Complete; i I)
        (I_STATEMENT_FORMAT22b add-int/lit8 v0 v0 0x2)
        (I_STATEMENT_FORMAT10t goto goto_0)
        (I_STATEMENT_FORMAT10x nop)
        (I_STATEMENT_PACKED_SWITCH
         (I_PACKED_SWITCH_START_KEY 0x1)
         (I_PACKED_SWITCH_TARGETS 4 pswitch_0 pswitch_1 pswitch_2 pswitch_3)))
    I_CATCHES
    I_PARAMETERS
    (I_ORDERED_DEBUG_DIRECTIVES (I_PROLOGUE 0) (I_LINE 26 0) (I_LINE 27 0) (I_LINE 39 5) (I_LINE 41 7) (I_LINE 29 8) (I_LINE 31 11) (I_LINE 33 16) (I_LINE 36 20) (I_LINE 37 24) (I_LINE 27 25))
    I_ANNOTATIONS)

    (I_METHOD
     withWhile
     (I_METHOD_PROTOTYPE (I_METHOD_RETURN_TYPE I))
     (I_ACCESS_LIST public)
     (I_LOCALS 0)
     (I_LABELS (I_LABEL goto_0 0))
     I_PACKED_SWITCH_DECLARATIONS
     I_SPARSE_SWITCH_DECLARATIONS
     (I_STATEMENTS (I_STATEMENT_FORMAT30t goto/32 goto_0))
     I_CATCHES
     I_PARAMETERS
     (I_ORDERED_DEBUG_DIRECTIVES (I_PROLOGUE 0) (I_LINE 18 0) (I_LINE 21 0))
     I_ANNOTATIONS))

     (I_FIELDS (I_FIELD i (I_ACCESS_LIST public) (I_FIELD_TYPE I) I_ANNOTATIONS) (I_FIELD s (I_ACCESS_LIST private) (I_FIELD_TYPE Ljava/lang/String;) I_ANNOTATIONS))
     I_ANNOTATIONS)

(I_CLASS_DEF
 Lcom/example/Main;
 (I_ACCESS_LIST public)
 (I_SUPER Ljava/lang/Object;)
 (I_SOURCE "Main.java")

 (I_METHODS
  (I_METHOD
   <init>
   (I_METHOD_PROTOTYPE (I_METHOD_RETURN_TYPE V))
   (I_ACCESS_LIST public constructor)
   (I_LOCALS 0)
   I_LABELS
   I_PACKED_SWITCH_DECLARATIONS
   I_SPARSE_SWITCH_DECLARATIONS
   (I_STATEMENTS
    (I_STATEMENT_FORMAT35c_METHOD
     invoke-direct
     (I_REGISTER_LIST p0)
     Ljava/lang/Object;
     <init>
     (I_METHOD_PROTOTYPE (I_METHOD_RETURN_TYPE V)))
    (I_STATEMENT_FORMAT10x return-void))
   I_CATCHES
   I_PARAMETERS
   (I_ORDERED_DEBUG_DIRECTIVES (I_PROLOGUE 0) (I_LINE 3 0))
   I_ANNOTATIONS)

  (I_METHOD
   main
   (I_METHOD_PROTOTYPE (I_METHOD_RETURN_TYPE V) [Ljava/lang/String;)
   (I_ACCESS_LIST public static)
   (I_LOCALS 3)
   (I_LABELS (I_LABEL try_start_0 8) (I_LABEL try_end_0 11) (I_LABEL goto_0 11) (I_LABEL catch_0 30))
   I_PACKED_SWITCH_DECLARATIONS
   I_SPARSE_SWITCH_DECLARATIONS
   (I_STATEMENTS
    (I_STATEMENT_FORMAT21c new-instance v0 Lcom/example/Complete;)
    (I_STATEMENT_FORMAT11n const/4 v1 0x1)
    (I_STATEMENT_FORMAT21c_STRING const-string v2 "Hello world")
    (I_STATEMENT_FORMAT35c_METHOD
     invoke-direct
     (I_REGISTER_LIST v0 v1 v2)
     Lcom/example/Complete;
     <init>
     (I_METHOD_PROTOTYPE (I_METHOD_RETURN_TYPE V) I Ljava/lang/String;))
    (I_STATEMENT_FORMAT35c_METHOD
     invoke-virtual
     (I_REGISTER_LIST v0)
     Lcom/example/Complete;
     throwsEx
     (I_METHOD_PROTOTYPE (I_METHOD_RETURN_TYPE V)))
    (I_STATEMENT_FORMAT21c_FIELD sget-object v1 Ljava/lang/System; out Ljava/io/PrintStream;)
    (I_STATEMENT_FORMAT35c_METHOD
     invoke-virtual
     (I_REGISTER_LIST v0)
     Lcom/example/Complete;
     withWhile
     (I_METHOD_PROTOTYPE (I_METHOD_RETURN_TYPE I)))
    (I_STATEMENT_FORMAT11x move-result v2)
    (I_STATEMENT_FORMAT35c_METHOD
     invoke-virtual
     (I_REGISTER_LIST v1 v2)
     Ljava/io/PrintStream;
     println
     (I_METHOD_PROTOTYPE (I_METHOD_RETURN_TYPE V) I))
    (I_STATEMENT_FORMAT21c_FIELD sget-object v1 Ljava/lang/System; out Ljava/io/PrintStream;)
    (I_STATEMENT_FORMAT35c_METHOD
     invoke-virtual
     (I_REGISTER_LIST v0)
     Lcom/example/Complete;
     withSwitch
     (I_METHOD_PROTOTYPE (I_METHOD_RETURN_TYPE I)))
    (I_STATEMENT_FORMAT11x move-result v0)
    (I_STATEMENT_FORMAT35c_METHOD
     invoke-virtual
     (I_REGISTER_LIST v1 v0)
     Ljava/io/PrintStream;
     println
     (I_METHOD_PROTOTYPE (I_METHOD_RETURN_TYPE V) I))
    (I_STATEMENT_FORMAT10x return-void)
    (I_STATEMENT_FORMAT11x move-exception v1)
    (I_STATEMENT_FORMAT35c_METHOD
     invoke-virtual
     (I_REGISTER_LIST v1)
     Ljava/lang/Exception;
     printStackTrace
     (I_METHOD_PROTOTYPE (I_METHOD_RETURN_TYPE V)))
    (I_STATEMENT_FORMAT10t goto goto_0)
    (I_CATCHES (I_CATCH 11 Ljava/lang/Exception; try_start_0 try_end_0 catch_0))
    (I_PARAMETERS (I_PARAMETER I_ANNOTATIONS))
    (I_ORDERED_DEBUG_DIRECTIVES (I_PROLOGUE 0) (I_LINE 5 0) (I_LINE 7 8) (I_LINE 11 11) (I_LINE 12 20) (I_LINE 13 29) (I_LINE 8 30) (I_LINE 9 31))
    I_ANNOTATIONS))

    I_FIELDS
    I_ANNOTATIONS)

And I also do not kown how to traverse the AST , so I can not output it . Can you tell me how to modify the code ?