Turbo_Prolog_Owners_Handbook_1987

SYSTEM liMITS

• The range and format of real numbers follows the 8-byte IEEE standard. The expo-

A ASCII Character Codes

Following are the ASCII character codes as understood by Turbo Prolog.

ASCII Character Set

201

ASCII Character Set (continued)

The following characters are non-printable.

Unprintable ASCII Characters

B Error Messages

Following is a comprehensive list of the error codes returned by Turbo Prolog.

I Illegal character

3Illegal keyword

4Use the format CODE=dddd or TRAIL=ddd

5This size must not exceed 64

10Illegal character

II Character constants should be terminated by a '

12The comment is not terminated by 1/

14The name is too long. (max. 250 characters)

15The textstring is too long. (max. 250 characters)

16The textstring should be terminated with a " in the same line

17Real constant is out of range

100 Undeclared domain (or misspelling)

102Standard domains must not be declared

103This domain was declared previously

104Syntax error: = or , expected

105Name expected (either a domain or a functor)

106Alternatives in a list declaration are illegal

107This functor has already been used in the domain declaration

108Functor name expected

109Domain name expected

110Syntax error in domain declaration: ) or , expected

III WARNING: Domain used as a functor (F 10=Ok, Esc=Abort)

112 WARNING: Domain declaration with a single functor (F 10=Ok, Esc=Abort)

200Illegal start of domain declaration

201This name is reserved for a standard predicate

202This predicate is already declared

204Domain name or ) expected

205Undeclared domain or misspelling

206Too many parameters used in this predicate

205

208Syntax error in predicate declaration: ) or , expected

209Illegal number of parameters

210Only one database predicate declaration is allowed

211This predicate is declared as a database predicate

220Syntax error in declaration of global predicates: - expected

221Syntax error: ( expected

222Syntax error in flow pattern: i or 0 expected

223Flow pattern has the wrong length

226Syntax error: predicates or domains expected

227Project name expected

228At most one internal goal may be specified

229The include file does not exist

230Include files may not be used recursively; this file is already included

231Too many include files; the maximum is 10

232The include file is too big

233database declarations must precede predicates

234Global predicates must be declared first

400Syntax error (Illegal start of predicate declaration)

401No clauses for this predicate

402Syntax error. AND , or . expected

403Predicate name expected

404Undeclared predicate or misspelling

405( expected

406) or, expected

407Illegal number of parameters: refer to declaration

408This sign should be followed by a number

409Syntax error-this token is misplaced

410Variable expected

411, expected

412Syntax error

413Syntax error: , Ior] expected

414Number or variable expected

415Clauses for the same predicate should be grouped

416 Comparison operator expected i.e., one of < <= >= >< <>

417Text after. is prohibited here

418Unexpected end of text

419Syntax error in clause body

420WARNING: the variable is only used once. ( FIO=Ok, Esc=Abort)

421The parameter is missing

422.:- or IF expected

423, or ) expected

424This facility is not implemented in this version

425A list should be terminated by a]

426Initializing a "database" is not allowed in a submodule

427To generate an object module the program must contain a goal

600Too many domain names

601Too many alternatives in the domain declaration

602Too many predicate names

603Too many parameters in this clause

604Too many literals in this clause

605Too many clauses

606Too many arguments

607Too many domain names on the left side of a domain declaration

608Too many database predicates

610Code array too small: use code=size to get more space

611Trail array too small: use trail=size to get more space

612Overflow: too many structures in clause

701 An internal system error has occurred; please contact your dealer

1000 The parameters in makewindow are illegal

1001 The cursor values are illegal

1002 Stack overflow; re-configure with Setup if necessary 1003 Heap overflow; not enough memory or an endless loop 1004 Arithmetic overflow.

1005 The window referred to is unknown

1006 There is not enough room in the editor for the text 1007 Heap overflow; not enough memory or an endless loop 1008 Code overflow; use code=size to get more space

1009 Trail overflow; use trail=size to get more space

1010 Attempt to open a previously opened file

1011 Attempt to re-assign input device to a unopened file 1012 Attempt to re-assign output device to a unopened file

1013 'system'call tries to execute a program which is too big or resident 1014 Division by zero

1015 Illegal window number

1016 Maximum number of windows exceeded

1018 The file isn'topen

1020 Free variables are not allowed here

2000 Not enough storage space for the text

2001 Can'texecute a write operation

2002 Impossible to open

2003 Impossible to erase

2004 Illegal disk

2005 >>> Text buffer full <<<

2006 Can'texecute a read operation

2200 Type error

2201 Free variable in expression

2202 The free variable in findall can only be used inside findall 2203 The free variable in findall does not occur in the predicate 2204 This is the first occurrence of this variable

2205 Type error: illiegal variable type for this position

2206 Type error: the functor does not belong to the domain

2207 Type error: the compound object has the wrong number of arguments 2208 Expressions may not contain objects of this type

2209 Comparisons may only be made between standard types

2210 Objects from these domains cannot be compared

2211 There is no corresponding list domain

2212 Type error: This parameter can'thandle compound objects

2213 Type error: This argument can'tbe a real

3001 WARNING: Variable used twice with output flow pattern. (F 10=Ok, Esc=Abort)

3002 WARNING: Composite flow pattern. (FIO=Ok, Esc=Abort)

3003 This flow pattern doesn'texist for the standard predicate

3004 Free variable in NOT

3005 Free variables are not allowed in WRITE

3006 The last variable in FINDALL must be free

3007 WARNING: The variable is not bound in this clause (FIO=Ok, Esc=Abort) 3008 Free variable in expression

3009 WARNING: two free variables in expression. (FIO=Ok, Esc=Abort)

3010 Loop in the flow analysis; don'tuse a compound flow pattern here 3011 WARNING: this will create a free variable. (FIO=Ok,.Esc=Abort) 4001 WARNING: non-deterministic clause. (FIO=Ok, Esc=Abort)

4002 WARNING: non-deterministic predicate. (FIO=Ok, Esc=Abort)

5001 Error in reading symbol table

5003 Error in writing symbol table

5103 Row number too small

5104 Row number too big

5105 Column number too small

5106 Column number too big

5107 Illegal screen mode (should be in range 1-6) 5109 Direction should be 0 or I

5114 The line is outside the window

C PLINK

USE OF THE FILE PLINK.BAT

PLlNK.BAT is a batch file that is executed when PLINK is invoked from within the Turbo Prolog system (the auto-link feature), or when the user gives a PLINK command from DOS.

PLINK can be given up to three parameters, which are referred to in PLINK via the symbolic variables % I, %2, %3:

%I The name of the project or module.

%2 A drive and path description for the directory to which the EXE generated file is to be added.

%3 A drive and path description specifying the directory where the files INIT.OBJ and PROLOG.LlB are to be found.

When used by the Turbo Prolog system (during auto-link), PLINK is given all three parameters automatically:

% I The name of the project or program

%2 The current path for the EXE directory

%3 The current path for the Turbo directory

When PLINK is initiated from DOS, at least the first parameter must be given. If the second and third parameters are omitted, the current default directory will be used, thus giving the command:

PLINK MYPROJ

when in the directory C\MYDIR has the same effect as giving the command

PLINK MYPROJ C:\MYDIR C:\MYDIR

PLINK checks whether an appropriate .SYM file exists and distinguishes between linking a project or a single OBJ file by means of the DOS EXISTS command.

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