1 using System;

     2 using System.Collections.Generic;

     3 using System.Text;

     4 

     5 

     6 public abstract class Statement

     7 {

     8 }

     9 

    10 public class DeclareVariable : Statement

    11 {

    12     public string Identifier;

    13     public Expression Expression;

    14 }

    15 

    16 public class DeclareFunction : Statement 

    17 {

    18     public string FunctionName;

    19     public DeclareVariable Parameter1;

    20     public DeclareVariable Parameter2;

    21     public DeclareVariable Parameter3;

    22     public String ReturnType;

    23     public Statement Body;

    24 }

    25 

    26 public class CallFunction : Statement 

    27 {

    28     public string FunctionName;

    29     public Expression Parameter1;

    30     public Expression Parameter2;

    31     public Expression Parameter3;

    32     public Identifier ReturnVariable;

    33 }

    34 

    35 public class Write : Statement

    36 {

    37     public Expression Expression;

    38 }

    39 

    40 public class Assignment : Statement

    41 {

    42     public string Identifier;

    43     public Expression Expression;

    44 }

    45 

    46 public class For : Statement

    47 {

    48     public string Identifier;

    49     public Expression From;

    50     public Expression To;

    51     public Statement Body;

    52 }

    53 

    54 public class IfThenElse : Statement

    55 {

    56     public Expression If;

    57     public Statement Then;

    58     public Statement Else;

    59 }

    60 

    61 public class IfThen : Statement

    62 {

    63     public Expression LeftExpression;

    64     public RelationalOperands Operand;

    65     public Expression RightExpression;

    66     public Statement ThenBody;

    67     public Statement ElseBody;

    68 }

    69 

    70 public class While : Statement

    71 {

    72     public Expression LeftExpression;

    73     public RelationalOperands Operand;

    74     public Expression RightExpression;

    75     public Statement Body;

    76 }

    77 

    78 public class ReadInput : Statement

    79 {

    80     public string Identifier;

    81 }

    82 

    83 public class StatementSequence : Statement

    84 {

    85     public Statement Left;

    86     public Statement Right;

    87 }

    88 

    89 public abstract class Expression

    90 {

    91 }

    92 

    93 public class AlphaNumericValue : Expression

    94 {

    95     public string Value;

    96 }

    97 

    98 public class NumericValue : Expression

    99 {

   100     public int Value;

   101 }

   102 

   103 public class Identifier : Expression

   104 {

   105     public string IdentifierName;

   106 }

   107 

   108 public class ArithmaticExpression : Expression

   109 {

   110     public Expression Left;

   111     public Expression Right;

   112     public ArithmaticOperands Operand;

   113 }

   114 

   115 public enum ArithmaticOperands

   116 {

   117     Add,

   118     Subtract,

   119     Multiply,

   120     Division

   121 }

   122 

   123 public class LogicalExpression : Expression

   124 {

   125     public Expression Left;

   126     public Expression Right;

   127     public LogicalOperands Operand;

   128 }

   129 

   130 public enum LogicalOperands

   131 {

   132     Or,

   133     And,

   134     Xor,

   135     Not

   136 }

   137 

   138 public class RelationalExpression : Expression

   139 {

   140     public Expression Left;

   141     public Expression Right;

   142     public RelationalOperands Operand;

   143 }

   144 

   145 public class CompareVariable : Statement

   146 {

   147     public string Identifier;

   148     public Expression Expression;

   149     public RelationalOperands Operand;

   150 }

   151 

   152 public enum RelationalOperands

   153 {

   154     EqualTo,

   155     NotEqualTo,

   156     LessThan,

   157     LessThanOrEqualTo,

   158     GreaterThan,

   159     GreaterThanOrEqualTo

   160 }