This wiki is out of date, use the continuation of this wiki instead

From FenixWiki

Revision as of 14:57, 1 August 2007 (edit) Sandman (Talk | contribs) m (→General) ← Previous diff		Current revision (15:52, 19 August 2008) (edit) (undo) Sandman (Talk | contribs) m (→Bitwise)
(9 intermediate revisions not shown.)
Line 6:		Line 6:
	| ''Operator'' || - ''Description''		| ''Operator'' || - ''Description''
	|-		|-
-	| Type || - Get the [[ProcessTypeID]] of a [[ProcessType]] or define a new [[datatype]].	+	| Type || - Get the [[ProcessTypeID]] of a [[ProcessType]] or define a new [[datatype]]. See [[Type]].
		+	|-
		+	| . <small>(period)</small> || - Element access. <code><struct>.<element></code>. In case of a struct array, if no arrayelement is specified, it points to [0] (see [[#Example|example]]).
	|}		|}
Line 47:		Line 49:
	|-		|-
	| ~ || - BNOT.		| ~ || - BNOT.
		+	|-
		+	| << || - Bitshift left, causes bits to move left a certain number of positions.
		+	|-
		+	| >> || - Bitshift left, causes bits to move right a certain number of positions.
	|}		|}
Line 60:		Line 66:
	== Example ==		== Example ==
	<pre>		<pre>
-	Program operators;	+	Type _point
		+	int x;
		+	int y;
		+	End
		+
	Global		Global
	int int_1 = 1;		int int_1 = 1;
Line 72:		Line 82:
	byte b_5 = 5;		byte b_5 = 5;
	byte b_12 = 12;		byte b_12 = 12;
		+	Struct Person[9]
		+	string name;
		+	int age;
		+	End
		+	_point myPoint;
		+	End
		+
		+	Process Main()
	Begin		Begin
Line 117:		Line 135:
	// -------- ~		// -------- ~
	// 11110011 = 243		// 11110011 = 243
		+
		+	person.name = "Mies"; // these are the same
		+	person[0].name = "Mies"; //
		+
		+	person[1].name = "Aap";
		+	person[2].name = "Noot";
		+	// ...etc...
		+	person[9].name = "Last person"; // last array element
		+
		+	setXY(&myPoint);
	Repeat		Repeat
	frame;		frame;
-	Until(key(_esc))	+	Until(key(_ESC))
		+	End
		+
		+	Function int setXY(_point* p)
		+	Begin
		+	p.x = 3; // this is actually (*p).x = 3, but . can be used like this
		+	p.y = 5; // this is actually (*p).y = 5, but . can be used like this
		+	return 0;
	End		End
	</pre>		</pre>
-	Used in example: [[say]]()	+	Used in example: [[say]](), [[key]](), [[Global]], [[Type]], [[Struct]], [[Array]], [[Pointer]], [[period]]
	This will result in something like:<br>		This will result in something like:<br>
-	http://wwwhome.cs.utwente.nl/~bergfi/fenix/wiki/operators.PNG	+	{{Image
		+	| image = Operators.png
		+	| caption = operator results
		+	}}

---

Current revision

Contents 1 List of Operators 1.1 General 1.2 Maths 1.3 Logic 1.4 Bitwise 1.5 Memory 2 Example

[edit] List of Operators

[edit] General

Operator	- Description
Type	- Get the ProcessTypeID of a ProcessType or define a new datatype. See Type.
. (period)	- Element access. <struct>.<element>. In case of a struct array, if no arrayelement is specified, it points to [0] (see example).

[edit] Maths

Operator	- Description
+	- Addition.
-	- Deduction
*	- Multiplication.
/	- Division.

[edit] Logic

Operator	- Description
||	- OR. One or the other or both.
&&	- AND. Both.
^^	- XOR. One or the other, but not both.
!	- NOT.

[edit] Bitwise

(Logical operation per bit.)

Operator	- Description
|	- BOR. One or the other or both.
&	- BAND. Both.
^	- BXOR. One or the other, but not both.
~	- BNOT.
<<	- Bitshift left, causes bits to move left a certain number of positions.
>>	- Bitshift left, causes bits to move right a certain number of positions.

[edit] Memory

Operator	- Description
&	- OFFSET. Get the memory address of a variable. See pointer.
*	- POINTER. Get access to the variable a pointer is pointing to. See pointer.

[edit] Example

Type _point
    int x;
    int y;
End

Global
    int int_1 = 1;
    int int_3 = 3;
    int int_4 = 4;
    int someint = -5;
    String somestring = "AAP";
    String anotherstring = "BEER";
    byte somebyte = 6;
    signed byte sbyte = -2;
    byte b_5 = 5;
    byte b_12 = 12;
    Struct Person[9]
        string name;
        int age;
    End
    _point myPoint;
End

Process Main()
Begin

    say("---------- maths");

    say(int_3 + int_4);
    say(int_3 * int_4 + 1);

    say("---------- strings with numerical datatypes");

    say(somestring + anotherstring);
    say(somestring + ": " + int_3);
    say(anotherstring + ": " + int_3*sbyte);

    say("---------- mixed numberical types and typecasting");

    say(somebyte+someint);
    say((signed byte)someint);
    say((unsigned byte)someint);

    say("---------- logic");

    say(int_1&&int_4);
    say(int_4==int_3+int_1);
    say(!(somestring==anotherstring));

    say("---------- bitwise");

    say(b_5|b_12);  // 00000101
                    // 00001100
                    // -------- |
                    // 00001101 = 13

    say(b_5&b_12);  // 00000101
                    // 00001100
                    // -------- &
                    // 00000100 = 4

    say(b_5^b_12);  // 00000101
                    // 00001100
                    // -------- ^
                    // 00001001 = 9

    say(~b_12);     // 00001100
                    // -------- ~
                    // 11110011 = 243

    person.name    = "Mies"; // these are the same
    person[0].name = "Mies"; //

    person[1].name = "Aap";
    person[2].name = "Noot";
    // ...etc...
    person[9].name = "Last person"; // last array element

    setXY(&myPoint);

    Repeat
        frame;
    Until(key(_ESC))

End

Function int setXY(_point* p)
Begin
    p.x = 3; // this is actually (*p).x = 3, but . can be used like this
    p.y = 5; // this is actually (*p).y = 5, but . can be used like this
    return 0;
End

Used in example: say(), key(), Global, Type, Struct, Array, Pointer, period

This will result in something like:

operator results