Objeck Documentation

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Bundle Core runtime library providing primitive types (Bool, Byte, Char, Int, Float, String), base collections, and system utilities. Every Objeck program links against this bundle automatically via lang.obl.

Runtime

Provides access to runtime system

Operations

Assert
Command
CommandOutput
Copy
Exit
GetEnvironmentVariable
GetInstallDir
GetLibraryDir
GetPlatform
GetProperty
GetTempDir
GetTime
GetUserDir
GetUuid
GetVersion
HasEnvironmentVariable
HasProperty
RaiseSignal
SetEnvironmentVariable
SetLocale
SetProperty
SetSignal

Assert # function

Asserts runtime value to be true. If false, program exits with stack trace.

function : Assert(assert:Bool) ~ Nil

Parameters

Name	Type	Description
assert	Bool	value to assert

Command # function

Executes a system command

function : Command(c:System.String) ~ Int

Parameters

Name	Type	Description
c	String	system command

Return

Type	Description
Int	command status code

CommandOutput # function

Executes a system command

function : CommandOutput(c:System.String) ~ CommandOutput

Parameters

Name	Type	Description
c	String	system command

Return

Type	Description
CommandOutput	output from command

CommandOutput # function

Executes a system command

function : CommandOutput(c:System.String, e:String[]) ~ CommandOutput

Parameters

Name	Type	Description
c	String	system command
e	String	array of environment variables

Return

Type	Description
CommandOutput	output from command

Copy # function

Copies data between two byte arrays

function : Copy(dest:Byte[], dest_offset:Int, src:Byte[], src_offset:Int, len:Int) ~ Bool

Parameters

Name	Type	Description
dest	Byte	destination array
dest_offset	Int	destination array copy offset
src	Byte	source array
src_offset	Int	source array copy offset
len	Int	number of bytes to copy

Return

Type	Description
Bool	true if successful, false otherwise

Copy # function

Copies data between two character arrays

function : Copy(dest:Char[], dest_offset:Int, src:Char[], src_offset:Int, len:Int) ~ Bool

Parameters

Name	Type	Description
dest	Char	destination array
dest_offset	Int	destination array copy offset
src	Char	source array
src_offset	Int	source array copy offset
len	Int	number of characters to copy

Return

Type	Description
Bool	true if successful, false otherwise

Copy # function

Copies data between two integer arrays

function : Copy(dest:Int[], dest_offset:Int, src:Int[], src_offset:Int, len:Int) ~ Bool

Parameters

Name	Type	Description
dest	Int	destination array
dest_offset	Int	destination array copy offset
src	Int	source array
src_offset	Int	source array copy offset
len	Int	number of values to copy

Return

Type	Description
Bool	true if successful, false otherwise

Copy # function

Copies data between two Base arrays

function : Copy(dest:Base[], dest_offset:Int, src:Base[], src_offset:Int, len:Int) ~ Bool

Parameters

Name	Type	Description
dest	Base	destination array
dest_offset	Int	destination array copy offset
src	Base	source array
src_offset	Int	source array copy offset
len	Int	number of values to copy

Return

Type	Description
Bool	true if successful, false otherwise

Copy # function

Copies data between two Compare arrays

function : Copy(dest:Compare[], dest_offset:Int, src:Compare[], src_offset:Int, len:Int) ~ Bool

Parameters

Name	Type	Description
dest	Compare	destination array
dest_offset	Int	destination array copy offset
src	Compare	source array
src_offset	Int	source array copy offset
len	Int	number of values to copy

Return

Type	Description
Bool	true if successful, false otherwise

Copy # function

Copies data between two float arrays

function : Copy(dest:Float[], dest_offset:Int, src:Float[], src_offset:Int, len:Int) ~ Bool

Parameters

Name	Type	Description
dest	Float	destination array
dest_offset	Int	destination array copy offset
src	Float	source array
src_offset	Int	source array copy offset
len	Int	number of values to copy

Return

Type	Description
Bool	true if successful, false otherwise

Exit # function

Causes the executing program to halt

function : Exit(code:Int) ~ Nil

Parameters

Name	Type	Description
code	Int	exit code

GetEnvironmentVariable # function

Fetches a runtime environment variable.

function : GetEnvironmentVariable(key:String) ~ String

Parameters

Name	Type	Description
key	String	variable key

Return

Type	Description
String	runtime environment variable

GetInstallDir # function

Returns the installation directory

function : GetInstallDir() ~ String

Return

Type	Description
String	installation directory

GetLibraryDir # function

Returns the library directory

function : GetLibraryDir() ~ String

Return

Type	Description
String	installation directory

GetPlatform # function

Returns an OS platform string

function : GetPlatform() ~ String

Return

Type	Description
String	OS platform string

GetProperty # function

Fetches a runtime property. System properties include: 'user_dir', temp_dir and 'install_dir'.

function : GetProperty(key:String) ~ String

Parameters

Name	Type	Description
key	String	property key

Return

Type	Description
String	runtime property

GetTempDir # function

Returns the system's temporary directory

function : GetTempDir() ~ String

Return

Type	Description
String	system's temporary directory

GetTime # function

Returns the current time

function : GetTime(gmt:Bool) ~ Time.Date

Parameters

Name	Type	Description
gmt	Bool	true of time is in GMT, false for local time zone

Return

Type	Description
Time.Date	current time

GetUserDir # function

Returns the current user's working directory

function : GetUserDir() ~ String

Return

Type	Description
String	current user's working directory

GetUuid # function

Generates a RFC 4122 version-4 UUID string

function : GetUuid() ~ String

Return

Type	Description
String	UUID string

GetVersion # function

Returns the package version string

function : GetVersion() ~ String

Return

Type	Description
String	package version string

HasEnvironmentVariable # function

Checks if an environment variable exists

function : HasEnvironmentVariable(key:String) ~ Bool

Parameters

Name	Type	Description
key	String	variable key

Return

Type	Description
Bool	true if it exists, false otherwise

HasProperty # function

Checks if a property exists

function : HasProperty(key:String) ~ Bool

Parameters

Name	Type	Description
key	String	property key

Return

Type	Description
Bool	true if it exists, false otherwise

RaiseSignal # function

Raises a system signal

function : RaiseSignal(type:Runtime->Signal) ~ Nil

Parameters

Name	Type	Description
type	Runtime->Signal	signal type

SetEnvironmentVariable # function

Sets a runtime environment variable

function : SetEnvironmentVariable(key:String, value:String) ~ Nil

Parameters

Name	Type	Description
key	String	variable key
value	String	environment value

SetLocale # function

Sets the runtime locale

function : SetLocale(locale:String) ~ Nil

Parameters

Name	Type	Description
locale	String	locale string

SetProperty # function

Sets a runtime property

function : SetProperty(key:String, value:String) ~ Nil

Parameters

Name	Type	Description
key	String	property key
value	String	property value

SetSignal # function

Sets a system signal

function : SetSignal(type:Runtime->Signal, func:(Int)~Nil) ~ Nil

Parameters

Name	Type	Description
type	Runtime->Signal	signal type
func	(Int)~Nil	function handler for signal