public class JPL
extends java.lang.Object
Copyright (C) 1998 Fred Dushin
This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library Public License for more details.
Modifier and Type | Field and Description |
---|---|
protected static boolean |
DEBUG |
static Term |
JFALSE |
static Term |
JNULL |
static Term |
JTRUE |
static Term |
JVOID |
static Atom |
LIST_NIL |
protected static Atom |
LIST_NIL_MODERN |
protected static Atom |
LIST_NIL_TRADITIONAL |
static java.lang.String |
LIST_PAIR |
protected static java.lang.String |
LIST_PAIR_MODERN |
protected static java.lang.String |
LIST_PAIR_TRADITIONAL |
protected static boolean |
modeDontTellMe |
Constructor and Description |
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JPL() |
Modifier and Type | Method and Description |
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static java.lang.String[] |
getActualInitArgs()
Returns, in an array of String, the sequence of command-line arguments that were actually used when the Prolog engine was formerly initialised.
|
static java.lang.String[] |
getDefaultInitArgs()
Returns, in an array of String, the sequence of command-line arguments that would be used if the Prolog engine were to be initialised now.
|
static java.lang.String |
getSyntax() |
static void |
halt()
Deprecated.
|
static boolean |
init()
Initialises the Prolog engine using the current default initialisation parameters, and returns 'true' (or 'false' if already initialised).
|
static boolean |
init(java.lang.String[] args)
Initializes the Prolog engine, using the String argument parameters passed.
|
protected static boolean |
isSimpleName(java.lang.String s) |
static boolean |
isTag(java.lang.String s)
whether the String arg is a plausible tag, e.g.
|
static java.lang.String |
jarPath() |
static void |
loadNativeLibrary() |
static void |
main(java.lang.String[] args) |
static Term |
newJRef(java.lang.Object obj)
returns a new Term instance which represents the given object
|
protected static java.lang.String |
quotedName(java.lang.String name)
Returns a quoted (iff necessary) form of the Atom's name, as understood by Prolog read/1
|
static void |
setDefaultInitArgs(java.lang.String[] args)
Specifies, in an array of String, the sequence of command-line arguments that should be used if the Prolog engine is subsequently initialised.
|
static void |
setDTMMode(boolean dtm)
Sets the global "dont-tell-me" mode (default value: true).
|
static java.lang.String |
setNativeLibraryDir(java.lang.String newDir) |
static java.lang.String |
setNativeLibraryName(java.lang.String newName) |
static java.lang.String |
setNativeLibraryPath(java.lang.String newPath) |
static void |
setTraditional() |
static void |
setTraditionalAnyway() |
static java.lang.String |
version_string()
Returns a String (eg "3.0.0-alpha") identifying this version of JPL.
|
static Version |
version()
Returns (as a Version) an identification of this version of JPL.
|
protected static final boolean DEBUG
public static final Term JFALSE
public static final Term JTRUE
public static final Term JNULL
public static final Term JVOID
protected static boolean modeDontTellMe
protected static final Atom LIST_NIL_MODERN
protected static final Atom LIST_NIL_TRADITIONAL
public static Atom LIST_NIL
protected static final java.lang.String LIST_PAIR_MODERN
protected static final java.lang.String LIST_PAIR_TRADITIONAL
public static java.lang.String LIST_PAIR
public static java.lang.String setNativeLibraryName(java.lang.String newName)
public static java.lang.String setNativeLibraryDir(java.lang.String newDir)
public static java.lang.String setNativeLibraryPath(java.lang.String newPath)
public static void loadNativeLibrary()
public static java.lang.String jarPath()
public static void setDTMMode(boolean dtm)
This method should be regarded as experimental, and may subsequently be deprecated in favour of some more general mechanism for setting options, perhaps per-Query and per-call as well as globally.
dtm
- new "dont-tell-me" mode valuepublic static void setTraditional()
public static void setTraditionalAnyway()
public static java.lang.String getSyntax()
public static java.lang.String[] getDefaultInitArgs()
getActualInitArgs()
public static void setDefaultInitArgs(java.lang.String[] args)
args
- new default initialization argumentspublic static java.lang.String[] getActualInitArgs()
public static boolean init(java.lang.String[] args)
This method must be called before making any queries.
args
- Initialization parameter listpublic static boolean init()
protected static boolean isSimpleName(java.lang.String s)
s
- public static boolean isTag(java.lang.String s)
public static Term newJRef(java.lang.Object obj)
protected static java.lang.String quotedName(java.lang.String name)
public static void halt()
Note. This method calls the FLI halt() method with a status of 0, but the halt method currently is a no-op in SWI.
public static Version version()
public static java.lang.String version_string()
public static void main(java.lang.String[] args)