Differences

This shows you the differences between two versions of the page.

--- mpl [2016/07/11 16:36] – [Mystic Programming Language] gryphon
+++ mpl [2016/07/13 21:23] – g00r00
@@ Line 1: / Line 1: @@
 ====== Mystic Programming Language ======
-====== General Functions and Procedures =====
 ===== General Notes About Using The MPL =====
@@ Line 65: / Line 64: @@
 All variables are global to all of the program, including procedures.  The syntax for declaring a variable follows:
-  Var <VarName> : <VarType>
+  Var <Variable Name> : <Variable Type>
   Examples:
-  var dummy : byte
+  Var Dummy : Byte;
-  var str   : string
+  Var Str   : String;
-  var
+  Var
-    dummy : byte,
+    Dummy1,
-    str   : string
+    Dummy2  : Byte;
 The following variable types are supported:
@@ Line 87: / Line 86: @@
   Word            Numerical      0..65535
   LongInt         Numerical      -2147483648..214748364
+  Cardinal        Numerical      0..4294967295
   Real            Numerical      9.99
-All variables except ARRAYs can be initialized when when defined.
+All variables except ARRAYs can be initialized when when defined:
   Var TotalBases : LongInt = GetMBaseTotal(False)
@@ Line 97: / Line 97: @@
 ARRAY multi-dimensional variables are supported.  The syntax for declaring an array variable is:
-  Var <VarName> :  ARRAY[<Low>..<High>] of <VarType>
+  Var <VarName> : ARRAY[<Low>..<High>] of <VarType>
-  Var <VarName> :  ARRAY[<L>..<H>, <L>..<H>] of <VarType>
+  Var <VarName> : ARRAY[<L>..<H>, <L>..<H>] of <VarType>
-  Var <VarName> :  ARRAY[<L>..<H>, <L>..<H>, <L>..<H>] of <VarType>
+  Var <VarName> : ARRAY[<L>..<H>, <L>..<H>, <L>..<H>] of <VarType>
 Examples:
-  Var Dummy : Array[1..10] of Byte
+  Var Dummy : Array[1..10] of Byte;
-  Var Str   : Array[5..10] of String
+  Var Str   : Array[5..10] of String;
-  Var Int   : Array[1..10,1..10,1..10] of Integer
+  Var Int   : Array[1..10, 1..10, 1..10] of Integer;
-HEXIDECIMAL values are supported.  They can be used in numeric variable assignment numerical evaluation, and in numeric constant variables.  A hex value must begin with a $ character.
+HEXIDECIMAL values are supported.  They can be used in numeric variable assignment numerical evaluation, and in numeric constant variables.  A hex value must begin with a $ character:
-Some examples:
   Const
     MyHexValue = $1F;
-    Value := $10;
+  Value := $10;
-  If Value = $10 Then WriteLn('Value is 16 <in decimal>');
+  If Value = $10 Then
+    WriteLn('Value is 16 <in decimal>');
 ==== Record Structures ====
@@ Line 319: / Line 319: @@
 At the moment, constant variables cannot be used in certain places within the MPE engine.  If you are assigning a value to a variable, constant values will not be recognized.
-===== General Functions and Procedures =====
-==== Function ABS (Num: LongInt) : LongInt ====
-This function takes a signed integer and returns the absolute value.
-Example:
-  Var Int : LongInt = -1234
-  WriteLn('The absolute value of '+Int2str(Int) +' is '+Abs(Int)+'.')
-==== Function ALLOWARROW (Boolean) ====
-Used to turn on arrow key processing in the READKEY function.  It is also used outside of MPL so use with caution.
-Example:
-  AllowArrow := True
-  ReadKey