Merlyn - Pascal and Delphi Words

Pascal and Delphi Words

This shows, very briefly, ways in which each Pascal or Delphi reserved word or directive is used; it cannot act as a tutorial in their use, but may serve as a reminder of words and usage. Where the entry is "*", I have as yet thought of nothing short and useful.

Notes :-

BV* are booleans, I..N are ordinals, P are pointers, ...; the types shown are possible, but not necessarily necessary.

The "In" column shows a version that I know the word to be in, and for which the example applies. Normally, it will be in all subsequent versions.

Versions considered are TP1..TP7, BP7, D1..; TPW & BPW are ignored.

The lists should be complete for BP7 & D3.

Descriptions are fairly complete for BP7 (RSVP); but not for D3.

See also at Pascaland (Fr.).

**Reserved Words**
In	Reserved Word	Example of usage
BP7	and	BV := BV1 and BV2 ; J := K and L
BP7	array	var X : array [type] of type
D3	as
BP7	asm	asm assembler code end
BP7	begin	begin statements end
BP7	case	case N of 1: statement; 2: statement; else statement end
D3	class
BP7	const	const X=3; const Y: byte=4
BP7	constructor	constructor Method (<parameter list>)
BP7	destructor	destructor Method
D3	dispinterface
BP7	div	I := J div K
BP7	do	see for, while, with
BP7	downto	for J := 5 downto 1 do statement
BP7	else	see case, if
BP7	end	see asm, begin, case, object, record
D3	except
BP7	exports	*
BP7	file	var F : file ; G : file of type
D3	finalization
D3	finally
BP7	for	for J := 1 to 5 do statement
BP7	function	function Q(const C:char; J:shortint) : char
BP7	goto	goto L
BP7	if	if BV then statement else statement
BP7	implementation	*
BP7	in	BV := element in set
BP7	inherited	*
D3	initialization
BP7	inline	inline($9C) ; inline($58/$F7/$E8)
BP7	interface	*
D3	is
BP7	label	label L
BP7	library	library DLLname
BP7	mod	I := J mod K
BP7	nil	P := nil
BP7	not	BV := not BV1
BP7	object	type Tob = object (Tx) W:word; B,C:byte end
BP7	of	see array, case, file, set
BP7	or	BV := BV1 or BV2 ; J := K or L
D3	out
BP7	packed	var X : packed record ... end
BP7	procedure	procedure A(var B:byte; const C:char; J:shortint)
BP7	program	program ProgName
D3	property
D3	raise
BP7	record	type Tr = record W:word; B,C:byte end
BP7	repeat	repeat statements until BV
D3	resourcestring
BP7	set	type Ts = set of 'A'..'Z'
BP7	shl	J := K shl 3
BP7	shr	J := K shr 3
BP7	string	var S1:string; S2: string[33]
D3	stringresource
BP7	then	see if
D3	threadvar
BP7	to	for J := 1 to 5 do statement
D3	try
BP7	type	type Tx = 1..7 ; Ty = (red, green, blue)
BP7	unit	unit UnitName
BP7	until	repeat statements until BV
BP7	uses	uses Dos, Crt
BP7	var	var J : integer
BP7	while	while BV do statement
BP7	with	with P^ do statement
BP7	xor	BV := BV1 xor BV2 ; J := K xor L

Reserved Words

Reserved Word

Example of usage

BP7

and

BV := BV1 and BV2 ; J := K and L

BP7

array

var X : array [type] of type

BP7

asm

asm assembler code end

BP7

begin

begin statements end

BP7

case

case N of 1: statement; 2: statement; else statement end

class

BP7

const

const X=3; const Y: byte=4

BP7

constructor

constructor Method (<parameter list>)

BP7

destructor

destructor Method

dispinterface

BP7

div

I := J div K

BP7

see for, while, with

BP7

downto

for J := 5 downto 1 do statement

BP7

else

see case, if

BP7

end

see asm, begin, case, object, record

except

BP7

exports

BP7

file

var F : file ; G : file of type

finalization

finally

BP7

for

for J := 1 to 5 do statement

BP7

function

function Q(const C:char; J:shortint) : char

BP7

goto

goto L

BP7

if BV then statement else statement

BP7

implementation

BP7

BV := element in set

BP7

inherited

initialization

BP7

inline

inline($9C) ; inline($58/$F7/$E8)

BP7

interface

BP7

label

label L

BP7

library

library DLLname

BP7

mod

I := J mod K

BP7

nil

P := nil

BP7

not

BV := not BV1

BP7

object

type Tob = object (Tx) W:word; B,C:byte end

BP7

see array, case, file, set

BP7

BV := BV1 or BV2 ; J := K or L

out

BP7

packed

var X : packed record ... end

BP7

procedure

procedure A(var B:byte; const C:char; J:shortint)

BP7

program

program ProgName

property

raise

BP7

record

type Tr = record W:word; B,C:byte end

BP7

repeat

repeat statements until BV

resourcestring

BP7

set

type Ts = set of 'A'..'Z'

BP7

shl

J := K shl 3

BP7

shr

J := K shr 3

BP7

string

var S1:string; S2: string[33]

stringresource

BP7

then

see if

threadvar

BP7

for J := 1 to 5 do statement

try

BP7

type

type Tx = 1..7 ; Ty = (red, green, blue)

BP7

unit

unit UnitName

BP7

until

repeat statements until BV

BP7

uses

uses Dos, Crt

BP7

var

var J : integer

BP7

while

while BV do statement

BP7

with

with P^ do statement

BP7

xor

BV := BV1 xor BV2 ; J := K xor L

Note that names such as byte, real, ... (see Pascal / Delphi / + Types) and those of the standard procedures & functions are not reserved words; but it is usually bad practice to redefine them.

**Directives**
In	Directive	Example of usage
BP7	absolute	var Tix : word absolute $40:$6C ; Tox : byte absolute Tix
D3	abstract
BP7	assembler	procedure directive
D3	automated
D3	cdecl
D6	deprecated	const S = 'V' deprecated ;
D3	default
D3	dispid
D3	dynamic
BP7	export	procedure directive
BP7	external	procedure directive
BP7	far	procedure directive
BP7	forward	procedure directive
BP7	index	used in an exports clause
BP7	interrupt	procedure directive (not D3)
D3	message
D3	name
BP7	near	procedure directive
D3	nodefault
D3	override
D3	pascal
BP7	private	used in objects
D3	protected
BP7	public	used in objects
D3	published
D3	read
D3	readonly
D3	register
BP7	resident	used in an exports clause
D3	safecall
D3	stdcall
D3	stored
BP7	virtual	procedure directive
D3	write
D3	writeonly

Directives

Directive

Example of usage

BP7

absolute

var Tix : word absolute $40:$6C ; Tox : byte absolute Tix

abstract

BP7

assembler

procedure directive

automated

cdecl

deprecated

const S = 'V' deprecated ;

default

dispid

dynamic

BP7

export

procedure directive

BP7

external

procedure directive

BP7

far

procedure directive

BP7

forward

procedure directive

BP7

index

used in an exports clause

BP7

interrupt

procedure directive (not D3)

message

name

BP7

near

procedure directive

nodefault

override

pascal

BP7

private

used in objects

protected

BP7

public

used in objects

published

read

readonly

BP7

resident

used in an exports clause

safecall

stdcall

stored

BP7

virtual

procedure directive

write

writeonly

Directives can, but should not, be redefined.

**Keywords**
In	Keyword	Example of usage
D6

Keywords

Keyword

Example of usage

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Pascal and Delphi Words.

Pascal and Delphi Words

Pascal and Delphi Words .