https://tomcat.apache.org/: Common code shared by Catalina and Jasper for scanning JARS and processing XML descriptors 
public class org.apache.tomcat.util.digester.CallParamRule extends org.apache.tomcat.util.digester.Rule
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.apache.tomcat.util.digester.CallParamRule
  super_class: org.apache.tomcat.util.digester.Rule
{
  protected final java.lang.String attributeName;
    descriptor: Ljava/lang/String;
    flags: (0x0014) ACC_PROTECTED, ACC_FINAL

  protected final int paramIndex;
    descriptor: I
    flags: (0x0014) ACC_PROTECTED, ACC_FINAL

  protected final boolean fromStack;
    descriptor: Z
    flags: (0x0014) ACC_PROTECTED, ACC_FINAL

  protected final int stackIndex;
    descriptor: I
    flags: (0x0014) ACC_PROTECTED, ACC_FINAL

  protected org.apache.tomcat.util.digester.ArrayStack<java.lang.String> bodyTextStack;
    descriptor: Lorg/apache/tomcat/util/digester/ArrayStack;
    flags: (0x0004) ACC_PROTECTED
    Signature: Lorg/apache/tomcat/util/digester/ArrayStack<Ljava/lang/String;>;

  public void <init>(int);
    descriptor: (I)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // org.apache.tomcat.util.digester.CallParamRule this
        start local 1 // int paramIndex
         0: .line 44
            aload 0 /* this */
            iload 1 /* paramIndex */
            aconst_null
            invokespecial org.apache.tomcat.util.digester.CallParamRule.<init>:(ILjava/lang/String;)V
         1: .line 45
            return
        end local 1 // int paramIndex
        end local 0 // org.apache.tomcat.util.digester.CallParamRule this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    2     0        this  Lorg/apache/tomcat/util/digester/CallParamRule;
            0    2     1  paramIndex  I
    MethodParameters:
            Name  Flags
      paramIndex  

  public void <init>(int, java.lang.String);
    descriptor: (ILjava/lang/String;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=3, args_size=3
        start local 0 // org.apache.tomcat.util.digester.CallParamRule this
        start local 1 // int paramIndex
        start local 2 // java.lang.String attributeName
         0: .line 57
            aload 0 /* this */
            aload 2 /* attributeName */
            iload 1 /* paramIndex */
            iconst_0
            iconst_0
            invokespecial org.apache.tomcat.util.digester.CallParamRule.<init>:(Ljava/lang/String;IIZ)V
         1: .line 58
            return
        end local 2 // java.lang.String attributeName
        end local 1 // int paramIndex
        end local 0 // org.apache.tomcat.util.digester.CallParamRule this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    2     0           this  Lorg/apache/tomcat/util/digester/CallParamRule;
            0    2     1     paramIndex  I
            0    2     2  attributeName  Ljava/lang/String;
    MethodParameters:
               Name  Flags
      paramIndex     
      attributeName  

  private void <init>(java.lang.String, int, int, boolean);
    descriptor: (Ljava/lang/String;IIZ)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=5, args_size=5
        start local 0 // org.apache.tomcat.util.digester.CallParamRule this
        start local 1 // java.lang.String attributeName
        start local 2 // int paramIndex
        start local 3 // int stackIndex
        start local 4 // boolean fromStack
         0: .line 61
            aload 0 /* this */
            invokespecial org.apache.tomcat.util.digester.Rule.<init>:()V
         1: .line 63
            aload 0 /* this */
            aload 1 /* attributeName */
            putfield org.apache.tomcat.util.digester.CallParamRule.attributeName:Ljava/lang/String;
         2: .line 64
            aload 0 /* this */
            iload 2 /* paramIndex */
            putfield org.apache.tomcat.util.digester.CallParamRule.paramIndex:I
         3: .line 65
            aload 0 /* this */
            iload 3 /* stackIndex */
            putfield org.apache.tomcat.util.digester.CallParamRule.stackIndex:I
         4: .line 66
            aload 0 /* this */
            iload 4 /* fromStack */
            putfield org.apache.tomcat.util.digester.CallParamRule.fromStack:Z
         5: .line 67
            return
        end local 4 // boolean fromStack
        end local 3 // int stackIndex
        end local 2 // int paramIndex
        end local 1 // java.lang.String attributeName
        end local 0 // org.apache.tomcat.util.digester.CallParamRule this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    6     0           this  Lorg/apache/tomcat/util/digester/CallParamRule;
            0    6     1  attributeName  Ljava/lang/String;
            0    6     2     paramIndex  I
            0    6     3     stackIndex  I
            0    6     4      fromStack  Z
    MethodParameters:
               Name  Flags
      attributeName  
      paramIndex     
      stackIndex     
      fromStack      

  public void begin(java.lang.String, java.lang.String, org.xml.sax.Attributes);
    descriptor: (Ljava/lang/String;Ljava/lang/String;Lorg/xml/sax/Attributes;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=6, args_size=4
        start local 0 // org.apache.tomcat.util.digester.CallParamRule this
        start local 1 // java.lang.String namespace
        start local 2 // java.lang.String name
        start local 3 // org.xml.sax.Attributes attributes
         0: .line 118
            aconst_null
            astore 4 /* param */
        start local 4 // java.lang.Object param
         1: .line 120
            aload 0 /* this */
            getfield org.apache.tomcat.util.digester.CallParamRule.attributeName:Ljava/lang/String;
            ifnull 4
         2: .line 122
            aload 3 /* attributes */
            aload 0 /* this */
            getfield org.apache.tomcat.util.digester.CallParamRule.attributeName:Ljava/lang/String;
            invokeinterface org.xml.sax.Attributes.getValue:(Ljava/lang/String;)Ljava/lang/String;
            astore 4 /* param */
         3: .line 124
            goto 12
      StackMap locals: java.lang.Object
      StackMap stack:
         4: aload 0 /* this */
            getfield org.apache.tomcat.util.digester.CallParamRule.fromStack:Z
            ifeq 12
         5: .line 126
            aload 0 /* this */
            getfield org.apache.tomcat.util.digester.CallParamRule.digester:Lorg/apache/tomcat/util/digester/Digester;
            aload 0 /* this */
            getfield org.apache.tomcat.util.digester.CallParamRule.stackIndex:I
            invokevirtual org.apache.tomcat.util.digester.Digester.peek:(I)Ljava/lang/Object;
            astore 4 /* param */
         6: .line 128
            aload 0 /* this */
            getfield org.apache.tomcat.util.digester.CallParamRule.digester:Lorg/apache/tomcat/util/digester/Digester;
            getfield org.apache.tomcat.util.digester.Digester.log:Lorg/apache/juli/logging/Log;
            invokeinterface org.apache.juli.logging.Log.isDebugEnabled:()Z
            ifeq 12
         7: .line 130
            new java.lang.StringBuilder
            dup
            ldc "[CallParamRule]{"
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            astore 5 /* sb */
        start local 5 // java.lang.StringBuilder sb
         8: .line 131
            aload 5 /* sb */
            aload 0 /* this */
            getfield org.apache.tomcat.util.digester.CallParamRule.digester:Lorg/apache/tomcat/util/digester/Digester;
            getfield org.apache.tomcat.util.digester.Digester.match:Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
         9: .line 132
            aload 5 /* sb */
            ldc "} Save from stack; from stack?"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            aload 0 /* this */
            getfield org.apache.tomcat.util.digester.CallParamRule.fromStack:Z
            invokevirtual java.lang.StringBuilder.append:(Z)Ljava/lang/StringBuilder;
            pop
        10: .line 133
            aload 5 /* sb */
            ldc "; object="
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            aload 4 /* param */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/Object;)Ljava/lang/StringBuilder;
            pop
        11: .line 134
            aload 0 /* this */
            getfield org.apache.tomcat.util.digester.CallParamRule.digester:Lorg/apache/tomcat/util/digester/Digester;
            getfield org.apache.tomcat.util.digester.Digester.log:Lorg/apache/juli/logging/Log;
            aload 5 /* sb */
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokeinterface org.apache.juli.logging.Log.debug:(Ljava/lang/Object;)V
        end local 5 // java.lang.StringBuilder sb
        12: .line 144
      StackMap locals:
      StackMap stack:
            aload 4 /* param */
            ifnull 15
        13: .line 145
            aload 0 /* this */
            getfield org.apache.tomcat.util.digester.CallParamRule.digester:Lorg/apache/tomcat/util/digester/Digester;
            invokevirtual org.apache.tomcat.util.digester.Digester.peekParams:()Ljava/lang/Object;
            checkcast java.lang.Object[]
            astore 5 /* parameters */
        start local 5 // java.lang.Object[] parameters
        14: .line 146
            aload 5 /* parameters */
            aload 0 /* this */
            getfield org.apache.tomcat.util.digester.CallParamRule.paramIndex:I
            aload 4 /* param */
            aastore
        end local 5 // java.lang.Object[] parameters
        15: .line 148
      StackMap locals:
      StackMap stack:
            return
        end local 4 // java.lang.Object param
        end local 3 // org.xml.sax.Attributes attributes
        end local 2 // java.lang.String name
        end local 1 // java.lang.String namespace
        end local 0 // org.apache.tomcat.util.digester.CallParamRule this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0   16     0        this  Lorg/apache/tomcat/util/digester/CallParamRule;
            0   16     1   namespace  Ljava/lang/String;
            0   16     2        name  Ljava/lang/String;
            0   16     3  attributes  Lorg/xml/sax/Attributes;
            1   16     4       param  Ljava/lang/Object;
            8   12     5          sb  Ljava/lang/StringBuilder;
           14   15     5  parameters  [Ljava/lang/Object;
    Exceptions:
      throws java.lang.Exception
    MethodParameters:
            Name  Flags
      namespace   
      name        
      attributes  

  public void body(java.lang.String, java.lang.String, java.lang.String);
    descriptor: (Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=4, args_size=4
        start local 0 // org.apache.tomcat.util.digester.CallParamRule this
        start local 1 // java.lang.String namespace
        start local 2 // java.lang.String name
        start local 3 // java.lang.String bodyText
         0: .line 165
            aload 0 /* this */
            getfield org.apache.tomcat.util.digester.CallParamRule.attributeName:Ljava/lang/String;
            ifnonnull 4
            aload 0 /* this */
            getfield org.apache.tomcat.util.digester.CallParamRule.fromStack:Z
            ifne 4
         1: .line 169
            aload 0 /* this */
            getfield org.apache.tomcat.util.digester.CallParamRule.bodyTextStack:Lorg/apache/tomcat/util/digester/ArrayStack;
            ifnonnull 3
         2: .line 170
            aload 0 /* this */
            new org.apache.tomcat.util.digester.ArrayStack
            dup
            invokespecial org.apache.tomcat.util.digester.ArrayStack.<init>:()V
            putfield org.apache.tomcat.util.digester.CallParamRule.bodyTextStack:Lorg/apache/tomcat/util/digester/ArrayStack;
         3: .line 172
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.apache.tomcat.util.digester.CallParamRule.bodyTextStack:Lorg/apache/tomcat/util/digester/ArrayStack;
            aload 3 /* bodyText */
            invokevirtual java.lang.String.trim:()Ljava/lang/String;
            invokevirtual org.apache.tomcat.util.digester.ArrayStack.push:(Ljava/lang/Object;)Ljava/lang/Object;
            pop
         4: .line 175
      StackMap locals:
      StackMap stack:
            return
        end local 3 // java.lang.String bodyText
        end local 2 // java.lang.String name
        end local 1 // java.lang.String namespace
        end local 0 // org.apache.tomcat.util.digester.CallParamRule this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    5     0       this  Lorg/apache/tomcat/util/digester/CallParamRule;
            0    5     1  namespace  Ljava/lang/String;
            0    5     2       name  Ljava/lang/String;
            0    5     3   bodyText  Ljava/lang/String;
    Exceptions:
      throws java.lang.Exception
    MethodParameters:
           Name  Flags
      namespace  
      name       
      bodyText   

  public void end(java.lang.String, java.lang.String);
    descriptor: (Ljava/lang/String;Ljava/lang/String;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=4, args_size=3
        start local 0 // org.apache.tomcat.util.digester.CallParamRule this
        start local 1 // java.lang.String namespace
        start local 2 // java.lang.String name
         0: .line 182
            aload 0 /* this */
            getfield org.apache.tomcat.util.digester.CallParamRule.bodyTextStack:Lorg/apache/tomcat/util/digester/ArrayStack;
            ifnull 3
            aload 0 /* this */
            getfield org.apache.tomcat.util.digester.CallParamRule.bodyTextStack:Lorg/apache/tomcat/util/digester/ArrayStack;
            invokevirtual org.apache.tomcat.util.digester.ArrayStack.empty:()Z
            ifne 3
         1: .line 184
            aload 0 /* this */
            getfield org.apache.tomcat.util.digester.CallParamRule.digester:Lorg/apache/tomcat/util/digester/Digester;
            invokevirtual org.apache.tomcat.util.digester.Digester.peekParams:()Ljava/lang/Object;
            checkcast java.lang.Object[]
            astore 3 /* parameters */
        start local 3 // java.lang.Object[] parameters
         2: .line 185
            aload 3 /* parameters */
            aload 0 /* this */
            getfield org.apache.tomcat.util.digester.CallParamRule.paramIndex:I
            aload 0 /* this */
            getfield org.apache.tomcat.util.digester.CallParamRule.bodyTextStack:Lorg/apache/tomcat/util/digester/ArrayStack;
            invokevirtual org.apache.tomcat.util.digester.ArrayStack.pop:()Ljava/lang/Object;
            aastore
        end local 3 // java.lang.Object[] parameters
         3: .line 187
      StackMap locals:
      StackMap stack:
            return
        end local 2 // java.lang.String name
        end local 1 // java.lang.String namespace
        end local 0 // org.apache.tomcat.util.digester.CallParamRule this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    4     0        this  Lorg/apache/tomcat/util/digester/CallParamRule;
            0    4     1   namespace  Ljava/lang/String;
            0    4     2        name  Ljava/lang/String;
            2    3     3  parameters  [Ljava/lang/Object;
    MethodParameters:
           Name  Flags
      namespace  
      name       

  public java.lang.String toString();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=1
        start local 0 // org.apache.tomcat.util.digester.CallParamRule this
         0: .line 194
            new java.lang.StringBuilder
            dup
            ldc "CallParamRule["
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            astore 1 /* sb */
        start local 1 // java.lang.StringBuilder sb
         1: .line 195
            aload 1 /* sb */
            ldc "paramIndex="
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
         2: .line 196
            aload 1 /* sb */
            aload 0 /* this */
            getfield org.apache.tomcat.util.digester.CallParamRule.paramIndex:I
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
            pop
         3: .line 197
            aload 1 /* sb */
            ldc ", attributeName="
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
         4: .line 198
            aload 1 /* sb */
            aload 0 /* this */
            getfield org.apache.tomcat.util.digester.CallParamRule.attributeName:Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
         5: .line 199
            aload 1 /* sb */
            ldc ", from stack="
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
         6: .line 200
            aload 1 /* sb */
            aload 0 /* this */
            getfield org.apache.tomcat.util.digester.CallParamRule.fromStack:Z
            invokevirtual java.lang.StringBuilder.append:(Z)Ljava/lang/StringBuilder;
            pop
         7: .line 201
            aload 1 /* sb */
            ldc "]"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
         8: .line 202
            aload 1 /* sb */
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            areturn
        end local 1 // java.lang.StringBuilder sb
        end local 0 // org.apache.tomcat.util.digester.CallParamRule this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    9     0  this  Lorg/apache/tomcat/util/digester/CallParamRule;
            1    9     1    sb  Ljava/lang/StringBuilder;
}
SourceFile: "CallParamRule.java"