http://www.antlr.org: A framework for constructing recognizers, compilers, and translators from grammatical descriptions containing Java, C#, C++, or Python actions. (ANTLR) 
public abstract class org.antlr.runtime.misc.LookaheadStream<T> extends org.antlr.runtime.misc.FastQueue<T>
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: org.antlr.runtime.misc.LookaheadStream
  super_class: org.antlr.runtime.misc.FastQueue
{
  public static final int UNINITIALIZED_EOF_ELEMENT_INDEX;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 2147483647

  protected int currentElementIndex;
    descriptor: I
    flags: (0x0004) ACC_PROTECTED

  protected T prevElement;
    descriptor: Ljava/lang/Object;
    flags: (0x0004) ACC_PROTECTED
    Signature: TT;

  public T eof;
    descriptor: Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Signature: TT;

  protected int lastMarker;
    descriptor: I
    flags: (0x0004) ACC_PROTECTED

  protected int markDepth;
    descriptor: I
    flags: (0x0004) ACC_PROTECTED

  static final boolean $assertionsDisabled;
    descriptor: Z
    flags: (0x1018) ACC_STATIC, ACC_FINAL, ACC_SYNTHETIC

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 36
            ldc Lorg/antlr/runtime/misc/LookaheadStream;
            invokevirtual java.lang.Class.desiredAssertionStatus:()Z
            ifne 1
            iconst_1
            goto 2
      StackMap locals:
      StackMap stack:
         1: iconst_0
      StackMap locals:
      StackMap stack: int
         2: putstatic org.antlr.runtime.misc.LookaheadStream.$assertionsDisabled:Z
         3: .line 37
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.antlr.runtime.misc.LookaheadStream this
         0: .line 36
            aload 0 /* this */
            invokespecial org.antlr.runtime.misc.FastQueue.<init>:()V
         1: .line 42
            aload 0 /* this */
            iconst_0
            putfield org.antlr.runtime.misc.LookaheadStream.currentElementIndex:I
         2: .line 52
            aload 0 /* this */
            aconst_null
            putfield org.antlr.runtime.misc.LookaheadStream.eof:Ljava/lang/Object;
         3: .line 58
            aload 0 /* this */
            iconst_0
            putfield org.antlr.runtime.misc.LookaheadStream.markDepth:I
         4: .line 36
            return
        end local 0 // org.antlr.runtime.misc.LookaheadStream this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    5     0  this  Lorg/antlr/runtime/misc/LookaheadStream<TT;>;

  public void reset();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.antlr.runtime.misc.LookaheadStream this
         0: .line 62
            aload 0 /* this */
            invokespecial org.antlr.runtime.misc.FastQueue.reset:()V
         1: .line 63
            aload 0 /* this */
            iconst_0
            putfield org.antlr.runtime.misc.LookaheadStream.currentElementIndex:I
         2: .line 64
            aload 0 /* this */
            iconst_0
            putfield org.antlr.runtime.misc.LookaheadStream.p:I
         3: .line 65
            aload 0 /* this */
            aconst_null
            putfield org.antlr.runtime.misc.LookaheadStream.prevElement:Ljava/lang/Object;
         4: .line 66
            return
        end local 0 // org.antlr.runtime.misc.LookaheadStream this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    5     0  this  Lorg/antlr/runtime/misc/LookaheadStream<TT;>;

  public abstract T nextElement();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: ()TT;

  public abstract boolean isEOF();
    descriptor: (Ljava/lang/Object;)Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: (TT;)Z
    MethodParameters:
      Name  Flags
      o     

  public T remove();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=1
        start local 0 // org.antlr.runtime.misc.LookaheadStream this
         0: .line 83
            aload 0 /* this */
            iconst_0
            invokevirtual org.antlr.runtime.misc.LookaheadStream.elementAt:(I)Ljava/lang/Object;
            astore 1 /* o */
        start local 1 // java.lang.Object o
         1: .line 84
            aload 0 /* this */
            dup
            getfield org.antlr.runtime.misc.LookaheadStream.p:I
            iconst_1
            iadd
            putfield org.antlr.runtime.misc.LookaheadStream.p:I
         2: .line 86
            aload 0 /* this */
            getfield org.antlr.runtime.misc.LookaheadStream.p:I
            aload 0 /* this */
            getfield org.antlr.runtime.misc.LookaheadStream.data:Ljava/util/List;
            invokeinterface java.util.List.size:()I
            if_icmpne 5
            aload 0 /* this */
            getfield org.antlr.runtime.misc.LookaheadStream.markDepth:I
            ifne 5
         3: .line 87
            aload 0 /* this */
            aload 1 /* o */
            putfield org.antlr.runtime.misc.LookaheadStream.prevElement:Ljava/lang/Object;
         4: .line 89
            aload 0 /* this */
            invokevirtual org.antlr.runtime.misc.LookaheadStream.clear:()V
         5: .line 91
      StackMap locals: java.lang.Object
      StackMap stack:
            aload 1 /* o */
            areturn
        end local 1 // java.lang.Object o
        end local 0 // org.antlr.runtime.misc.LookaheadStream this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lorg/antlr/runtime/misc/LookaheadStream<TT;>;
            1    6     1     o  TT;
    Signature: ()TT;

  public void consume();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.antlr.runtime.misc.LookaheadStream this
         0: .line 96
            aload 0 /* this */
            iconst_1
            invokevirtual org.antlr.runtime.misc.LookaheadStream.syncAhead:(I)V
         1: .line 97
            aload 0 /* this */
            invokevirtual org.antlr.runtime.misc.LookaheadStream.remove:()Ljava/lang/Object;
            pop
         2: .line 98
            aload 0 /* this */
            dup
            getfield org.antlr.runtime.misc.LookaheadStream.currentElementIndex:I
            iconst_1
            iadd
            putfield org.antlr.runtime.misc.LookaheadStream.currentElementIndex:I
         3: .line 99
            return
        end local 0 // org.antlr.runtime.misc.LookaheadStream this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lorg/antlr/runtime/misc/LookaheadStream<TT;>;

  protected void syncAhead(int);
    descriptor: (I)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // org.antlr.runtime.misc.LookaheadStream this
        start local 1 // int need
         0: .line 106
            aload 0 /* this */
            getfield org.antlr.runtime.misc.LookaheadStream.p:I
            iload 1 /* need */
            iadd
            iconst_1
            isub
            aload 0 /* this */
            getfield org.antlr.runtime.misc.LookaheadStream.data:Ljava/util/List;
            invokeinterface java.util.List.size:()I
            isub
            iconst_1
            iadd
            istore 2 /* n */
        start local 2 // int n
         1: .line 107
            iload 2 /* n */
            ifle 2
            aload 0 /* this */
            iload 2 /* n */
            invokevirtual org.antlr.runtime.misc.LookaheadStream.fill:(I)V
         2: .line 108
      StackMap locals: int
      StackMap stack:
            return
        end local 2 // int n
        end local 1 // int need
        end local 0 // org.antlr.runtime.misc.LookaheadStream this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/antlr/runtime/misc/LookaheadStream<TT;>;
            0    3     1  need  I
            1    3     2     n  I
    MethodParameters:
      Name  Flags
      need  

  public void fill(int);
    descriptor: (I)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=4, args_size=2
        start local 0 // org.antlr.runtime.misc.LookaheadStream this
        start local 1 // int n
         0: .line 112
            iconst_1
            istore 2 /* i */
        start local 2 // int i
         1: goto 6
         2: .line 113
      StackMap locals: int
      StackMap stack:
            aload 0 /* this */
            invokevirtual org.antlr.runtime.misc.LookaheadStream.nextElement:()Ljava/lang/Object;
            astore 3 /* o */
        start local 3 // java.lang.Object o
         3: .line 114
            aload 0 /* this */
            aload 3 /* o */
            invokevirtual org.antlr.runtime.misc.LookaheadStream.isEOF:(Ljava/lang/Object;)Z
            ifeq 4
            aload 0 /* this */
            aload 3 /* o */
            putfield org.antlr.runtime.misc.LookaheadStream.eof:Ljava/lang/Object;
         4: .line 115
      StackMap locals: java.lang.Object
      StackMap stack:
            aload 0 /* this */
            getfield org.antlr.runtime.misc.LookaheadStream.data:Ljava/util/List;
            aload 3 /* o */
            invokeinterface java.util.List.add:(Ljava/lang/Object;)Z
            pop
        end local 3 // java.lang.Object o
         5: .line 112
            iinc 2 /* i */ 1
      StackMap locals:
      StackMap stack:
         6: iload 2 /* i */
            iload 1 /* n */
            if_icmple 2
        end local 2 // int i
         7: .line 117
            return
        end local 1 // int n
        end local 0 // org.antlr.runtime.misc.LookaheadStream this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    8     0  this  Lorg/antlr/runtime/misc/LookaheadStream<TT;>;
            0    8     1     n  I
            1    7     2     i  I
            3    5     3     o  TT;
    MethodParameters:
      Name  Flags
      n     

  public int size();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.antlr.runtime.misc.LookaheadStream this
         0: .line 121
            new java.lang.UnsupportedOperationException
            dup
            ldc "streams are of unknown size"
            invokespecial java.lang.UnsupportedOperationException.<init>:(Ljava/lang/String;)V
            athrow
        end local 0 // org.antlr.runtime.misc.LookaheadStream this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/antlr/runtime/misc/LookaheadStream<TT;>;

  public T LT();
    descriptor: (I)Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // org.antlr.runtime.misc.LookaheadStream this
        start local 1 // int k
         0: .line 124
            iload 1 /* k */
            ifne 2
         1: .line 125
            aconst_null
            areturn
         2: .line 127
      StackMap locals:
      StackMap stack:
            iload 1 /* k */
            ifge 3
            aload 0 /* this */
            iload 1 /* k */
            ineg
            invokevirtual org.antlr.runtime.misc.LookaheadStream.LB:(I)Ljava/lang/Object;
            areturn
         3: .line 129
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            iload 1 /* k */
            invokevirtual org.antlr.runtime.misc.LookaheadStream.syncAhead:(I)V
         4: .line 130
            aload 0 /* this */
            getfield org.antlr.runtime.misc.LookaheadStream.p:I
            iload 1 /* k */
            iadd
            iconst_1
            isub
            aload 0 /* this */
            getfield org.antlr.runtime.misc.LookaheadStream.data:Ljava/util/List;
            invokeinterface java.util.List.size:()I
            if_icmple 5
            aload 0 /* this */
            getfield org.antlr.runtime.misc.LookaheadStream.eof:Ljava/lang/Object;
            areturn
         5: .line 131
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            iload 1 /* k */
            iconst_1
            isub
            invokevirtual org.antlr.runtime.misc.LookaheadStream.elementAt:(I)Ljava/lang/Object;
            areturn
        end local 1 // int k
        end local 0 // org.antlr.runtime.misc.LookaheadStream this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lorg/antlr/runtime/misc/LookaheadStream<TT;>;
            0    6     1     k  I
    Signature: (I)TT;
    MethodParameters:
      Name  Flags
      k     

  public int index();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.antlr.runtime.misc.LookaheadStream this
         0: .line 134
            aload 0 /* this */
            getfield org.antlr.runtime.misc.LookaheadStream.currentElementIndex:I
            ireturn
        end local 0 // org.antlr.runtime.misc.LookaheadStream this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/antlr/runtime/misc/LookaheadStream<TT;>;

  public int mark();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.antlr.runtime.misc.LookaheadStream this
         0: .line 137
            aload 0 /* this */
            dup
            getfield org.antlr.runtime.misc.LookaheadStream.markDepth:I
            iconst_1
            iadd
            putfield org.antlr.runtime.misc.LookaheadStream.markDepth:I
         1: .line 138
            aload 0 /* this */
            aload 0 /* this */
            getfield org.antlr.runtime.misc.LookaheadStream.p:I
            putfield org.antlr.runtime.misc.LookaheadStream.lastMarker:I
         2: .line 139
            aload 0 /* this */
            getfield org.antlr.runtime.misc.LookaheadStream.lastMarker:I
            ireturn
        end local 0 // org.antlr.runtime.misc.LookaheadStream this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/antlr/runtime/misc/LookaheadStream<TT;>;

  public void release(int);
    descriptor: (I)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=0, locals=2, args_size=2
        start local 0 // org.antlr.runtime.misc.LookaheadStream this
        start local 1 // int marker
         0: .line 144
            return
        end local 1 // int marker
        end local 0 // org.antlr.runtime.misc.LookaheadStream this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    1     0    this  Lorg/antlr/runtime/misc/LookaheadStream<TT;>;
            0    1     1  marker  I
    MethodParameters:
        Name  Flags
      marker  

  public void rewind(int);
    descriptor: (I)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=2
        start local 0 // org.antlr.runtime.misc.LookaheadStream this
        start local 1 // int marker
         0: .line 147
            aload 0 /* this */
            dup
            getfield org.antlr.runtime.misc.LookaheadStream.markDepth:I
            iconst_1
            isub
            putfield org.antlr.runtime.misc.LookaheadStream.markDepth:I
         1: .line 148
            aload 0 /* this */
            getfield org.antlr.runtime.misc.LookaheadStream.p:I
            iload 1 /* marker */
            isub
            istore 2 /* delta */
        start local 2 // int delta
         2: .line 149
            aload 0 /* this */
            dup
            getfield org.antlr.runtime.misc.LookaheadStream.currentElementIndex:I
            iload 2 /* delta */
            isub
            putfield org.antlr.runtime.misc.LookaheadStream.currentElementIndex:I
         3: .line 150
            aload 0 /* this */
            iload 1 /* marker */
            putfield org.antlr.runtime.misc.LookaheadStream.p:I
         4: .line 151
            return
        end local 2 // int delta
        end local 1 // int marker
        end local 0 // org.antlr.runtime.misc.LookaheadStream this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    5     0    this  Lorg/antlr/runtime/misc/LookaheadStream<TT;>;
            0    5     1  marker  I
            2    5     2   delta  I
    MethodParameters:
        Name  Flags
      marker  

  public void rewind();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=1
        start local 0 // org.antlr.runtime.misc.LookaheadStream this
         0: .line 155
            aload 0 /* this */
            getfield org.antlr.runtime.misc.LookaheadStream.p:I
            aload 0 /* this */
            getfield org.antlr.runtime.misc.LookaheadStream.lastMarker:I
            isub
            istore 1 /* delta */
        start local 1 // int delta
         1: .line 156
            aload 0 /* this */
            dup
            getfield org.antlr.runtime.misc.LookaheadStream.currentElementIndex:I
            iload 1 /* delta */
            isub
            putfield org.antlr.runtime.misc.LookaheadStream.currentElementIndex:I
         2: .line 157
            aload 0 /* this */
            aload 0 /* this */
            getfield org.antlr.runtime.misc.LookaheadStream.lastMarker:I
            putfield org.antlr.runtime.misc.LookaheadStream.p:I
         3: .line 158
            return
        end local 1 // int delta
        end local 0 // org.antlr.runtime.misc.LookaheadStream this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    4     0   this  Lorg/antlr/runtime/misc/LookaheadStream<TT;>;
            1    4     1  delta  I

  public void seek(int);
    descriptor: (I)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=2
        start local 0 // org.antlr.runtime.misc.LookaheadStream this
        start local 1 // int index
         0: .line 175
            iload 1 /* index */
            ifge 2
         1: .line 176
            new java.lang.IllegalArgumentException
            dup
            ldc "can't seek before the beginning of the input"
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 179
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.antlr.runtime.misc.LookaheadStream.currentElementIndex:I
            iload 1 /* index */
            isub
            istore 2 /* delta */
        start local 2 // int delta
         3: .line 180
            aload 0 /* this */
            getfield org.antlr.runtime.misc.LookaheadStream.p:I
            iload 2 /* delta */
            isub
            ifge 5
         4: .line 181
            new java.lang.UnsupportedOperationException
            dup
            ldc "can't seek before the beginning of this stream's buffer"
            invokespecial java.lang.UnsupportedOperationException.<init>:(Ljava/lang/String;)V
            athrow
         5: .line 184
      StackMap locals: int
      StackMap stack:
            aload 0 /* this */
            dup
            getfield org.antlr.runtime.misc.LookaheadStream.p:I
            iload 2 /* delta */
            isub
            putfield org.antlr.runtime.misc.LookaheadStream.p:I
         6: .line 185
            aload 0 /* this */
            iload 1 /* index */
            putfield org.antlr.runtime.misc.LookaheadStream.currentElementIndex:I
         7: .line 186
            return
        end local 2 // int delta
        end local 1 // int index
        end local 0 // org.antlr.runtime.misc.LookaheadStream this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    8     0   this  Lorg/antlr/runtime/misc/LookaheadStream<TT;>;
            0    8     1  index  I
            3    8     2  delta  I
    MethodParameters:
       Name  Flags
      index  

  protected T LB();
    descriptor: (I)Ljava/lang/Object;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=3, locals=3, args_size=2
        start local 0 // org.antlr.runtime.misc.LookaheadStream this
        start local 1 // int k
         0: .line 189
            getstatic org.antlr.runtime.misc.LookaheadStream.$assertionsDisabled:Z
            ifne 1
            iload 1 /* k */
            ifgt 1
            new java.lang.AssertionError
            dup
            invokespecial java.lang.AssertionError.<init>:()V
            athrow
         1: .line 191
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.antlr.runtime.misc.LookaheadStream.p:I
            iload 1 /* k */
            isub
            istore 2 /* index */
        start local 2 // int index
         2: .line 192
            iload 2 /* index */
            iconst_m1
            if_icmpne 4
         3: .line 193
            aload 0 /* this */
            getfield org.antlr.runtime.misc.LookaheadStream.prevElement:Ljava/lang/Object;
            areturn
         4: .line 198
      StackMap locals: int
      StackMap stack:
            iload 2 /* index */
            iflt 6
         5: .line 199
            aload 0 /* this */
            getfield org.antlr.runtime.misc.LookaheadStream.data:Ljava/util/List;
            iload 2 /* index */
            invokeinterface java.util.List.get:(I)Ljava/lang/Object;
            areturn
         6: .line 202
      StackMap locals:
      StackMap stack:
            iload 2 /* index */
            iconst_m1
            if_icmpge 8
         7: .line 203
            new java.lang.UnsupportedOperationException
            dup
            ldc "can't look more than one token before the beginning of this stream's buffer"
            invokespecial java.lang.UnsupportedOperationException.<init>:(Ljava/lang/String;)V
            athrow
         8: .line 206
      StackMap locals:
      StackMap stack:
            new java.lang.UnsupportedOperationException
            dup
            ldc "can't look past the end of this stream's buffer using LB(int)"
            invokespecial java.lang.UnsupportedOperationException.<init>:(Ljava/lang/String;)V
            athrow
        end local 2 // int index
        end local 1 // int k
        end local 0 // org.antlr.runtime.misc.LookaheadStream this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    9     0   this  Lorg/antlr/runtime/misc/LookaheadStream<TT;>;
            0    9     1      k  I
            2    9     2  index  I
    Signature: (I)TT;
    MethodParameters:
      Name  Flags
      k     
}
Signature: <T:Ljava/lang/Object;>Lorg/antlr/runtime/misc/FastQueue<TT;>;
SourceFile: "LookaheadStream.java"