Notice: this Wiki will be going read only early in 2024 and edits will no longer be possible. Please see: https://gitlab.eclipse.org/eclipsefdn/helpdesk/-/wikis/Wiki-shutdown-plan for the plan.
Difference between revisions of "ATL Standard Library"
(improved structure wrt. both VMs, and added information about type encoding) |
(updated links to repository using Template:ATLRepositoryLink) |
||
Line 12: | Line 12: | ||
== EMF VM Implementation == | == EMF VM Implementation == | ||
− | In EMFVM, the ATL standard library is mostly implemented in the | + | In EMFVM, the ATL standard library is mostly implemented in the {{ATLRepositoryLink|plugins/org.eclipse.m2m.atl.engine.emfvm/src/org/eclipse/m2m/atl/engine/emfvm/lib/ExecEnv.java|ExecEnv}} Java class. |
Most types are not wrapped, and Java objects are used directly in many cases. | Most types are not wrapped, and Java objects are used directly in many cases. | ||
== Regular VM Implementation == | == Regular VM Implementation == | ||
− | In the Regular VM, Java objects are wrapped by specific objects (instances of subclasses of | + | In the Regular VM, Java objects are wrapped by specific objects (instances of subclasses of {{ATLRepositoryLink|plugins/org.eclipse.m2m.atl.engine.vm/src/org/eclipse/m2m/atl/engine/vm/nativelib/ASMOclAny.java|ASMOclAny}}). |
In the description that follows, for each type ''T'' a CVS link is given to the Java class implementing ''T'' in the Regular ATL virtual machine. | In the description that follows, for each type ''T'' a CVS link is given to the Java class implementing ''T'' in the Regular ATL virtual machine. | ||
In each class, operations available from the ATL language (as opposed to implementation-specific methods) are represented as Java methods located below the following comment: | In each class, operations available from the ATL language (as opposed to implementation-specific methods) are represented as Java methods located below the following comment: | ||
Line 33: | Line 33: | ||
// Additional Operations | // Additional Operations | ||
− | All of these Java classes are located in the | + | All of these Java classes are located in the {{ATLRepositoryLink|deprecated/org.atl.engine.vm/src/org/atl/engine/vm/nativelib/|org.atl.engine.vm.nativelib}} package. |
When the description given here is not complete enough, it is possible to go and read the Java implementation. | When the description given here is not complete enough, it is possible to go and read the Java implementation. | ||
− | This way, it is possible to know, for instance: the list of available operations and their semantics (e.g. operation String.regexReplaceAll(a : String, b : String) is implemented in | + | This way, it is possible to know, for instance: the list of available operations and their semantics (e.g. operation String.regexReplaceAll(a : String, b : String) is implemented in {{ATLRepositoryLink|deprecated/org.atl.engine.vm/src/org/atl/engine/vm/nativelib/ASMString.java|ASMString}} using [http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html#replaceAll(java.lang.String,%20java.lang.String) java.lang.String.replaceAll(String a, String b)]). |
Line 42: | Line 42: | ||
====Boolean==== | ====Boolean==== | ||
− | The ''Boolean'' OCL type is implemented by the | + | The ''Boolean'' OCL type is implemented by the {{ATLRepositoryLink|plugins/org.eclipse.m2m.atl.engine.vm/src/org/eclipse/m2m/atl/engine/vm/nativelib/ASMBoolean.java|ASMBoolean}} ({{ATLRepositoryLink|deprecated/org.atl.engine.vm/src/org/atl/engine/vm/nativelib/ASMBoolean.java|deprecated version}}) Java class. |
The underlying Java type is '''boolean'''. | The underlying Java type is '''boolean'''. | ||
====Integer==== | ====Integer==== | ||
− | The ''Integer'' OCL type is implemented by the | + | The ''Integer'' OCL type is implemented by the {{ATLRepositoryLink|plugins/org.eclipse.m2m.atl.engine.vm/src/org/eclipse/m2m/atl/engine/vm/nativelib/ASMInteger.java|ASMInteger}} ({{ATLRepositoryLink|deprecated/org.atl.engine.vm/src/org/atl/engine/vm/nativelib/ASMInteger.java|deprecated version}}) Java class. |
The underlying Java type is '''int'''. | The underlying Java type is '''int'''. | ||
====Real==== | ====Real==== | ||
− | The ''Real'' OCL type is implemented by the | + | The ''Real'' OCL type is implemented by the {{ATLRepositoryLink|plugins/org.eclipse.m2m.atl.engine.vm/src/org/eclipse/m2m/atl/engine/vm/nativelib/ASMReal.java|ASMReal}} ({{ATLRepositoryLink|deprecated/org.atl.engine.vm/src/org/atl/engine/vm/nativelib/ASMReal.java|deprecated version}}) Java class. |
The underlying Java type is '''double'''. | The underlying Java type is '''double'''. | ||
====String==== | ====String==== | ||
− | The ''String'' OCL type is implemented by the | + | The ''String'' OCL type is implemented by the {{ATLRepositoryLink|plugins/org.eclipse.m2m.atl.engine.vm/src/org/eclipse/m2m/atl/engine/vm/nativelib/ASMString.java|ASMString}} ({{ATLRepositoryLink|deprecated/org.atl.engine.vm/src/org/atl/engine/vm/nativelib/ASMString.java|deprecated version}}) Java class. |
The underlying Java type is [http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html java.lang.String]. | The underlying Java type is [http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html java.lang.String]. | ||
Line 64: | Line 64: | ||
====Collection==== | ====Collection==== | ||
− | The ''Collection'' OCL type is implemented by the | + | The ''Collection'' OCL type is implemented by the {{ATLRepositoryLink|plugins/org.eclipse.m2m.atl.engine.vm/src/org/eclipse/m2m/atl/engine/vm/nativelib/ASMCollection.java|ASMCollection}} ({{ATLRepositoryLink|deprecated/org.atl.engine.vm/src/org/atl/engine/vm/nativelib/ASMCollection.java|deprecated version}}) Java class. |
There is no underlying Java type for this abstract type. | There is no underlying Java type for this abstract type. | ||
However, all concrete collection types are implemented by sub-classes of [http://java.sun.com/j2se/1.4.2/docs/api/java/util/Collection.html java.util.Collection]. | However, all concrete collection types are implemented by sub-classes of [http://java.sun.com/j2se/1.4.2/docs/api/java/util/Collection.html java.util.Collection]. | ||
Line 70: | Line 70: | ||
====Bag==== | ====Bag==== | ||
− | The ''Bag'' OCL type is implemented by the | + | The ''Bag'' OCL type is implemented by the {{ATLRepositoryLink|plugins/org.eclipse.m2m.atl.engine.vm/src/org/eclipse/m2m/atl/engine/vm/nativelib/ASMBag.java|ASMBag}} ({{ATLRepositoryLink|deprecated/org.atl.engine.vm/src/org/atl/engine/vm/nativelib/ASMBag.java|deprecated version}}) Java class. |
The underlying Java type is [http://java.sun.com/j2se/1.4.2/docs/api/java/util/ArrayList.html java.util.ArrayList]. | The underlying Java type is [http://java.sun.com/j2se/1.4.2/docs/api/java/util/ArrayList.html java.util.ArrayList]. | ||
====OrderedSet==== | ====OrderedSet==== | ||
− | The ''OrderedSet'' OCL type is implemented by the | + | The ''OrderedSet'' OCL type is implemented by the {{ATLRepositoryLink|plugins/org.eclipse.m2m.atl.engine.vm/src/org/eclipse/m2m/atl/engine/vm/nativelib/ASMOrderedSet.java|ASMOrderedSet}} ({{ATLRepositoryLink|deprecated/org.atl.engine.vm/src/org/atl/engine/vm/nativelib/ASMOrderedSet.java|deprecated version}}) Java class. |
The underlying Java type is [http://java.sun.com/j2se/1.4.2/docs/api/java/util/LinkedHashSet.html java.util.LinkedHashSet]. | The underlying Java type is [http://java.sun.com/j2se/1.4.2/docs/api/java/util/LinkedHashSet.html java.util.LinkedHashSet]. | ||
====Sequence==== | ====Sequence==== | ||
− | The ''Sequence'' OCL type is implemented by the | + | The ''Sequence'' OCL type is implemented by the {{ATLRepositoryLink|plugins/org.eclipse.m2m.atl.engine.vm/src/org/eclipse/m2m/atl/engine/vm/nativelib/ASMSequence.java|ASMSequence}} ({{ATLRepositoryLink|deprecated/org.atl.engine.vm/src/org/atl/engine/vm/nativelib/ASMSequence.java|deprecated version}}) Java class. |
The underlying Java type is [http://java.sun.com/j2se/1.4.2/docs/api/java/util/ArrayList.html java.util.ArrayList]. | The underlying Java type is [http://java.sun.com/j2se/1.4.2/docs/api/java/util/ArrayList.html java.util.ArrayList]. | ||
====Set==== | ====Set==== | ||
− | The ''Set'' OCL type is implemented by the | + | The ''Set'' OCL type is implemented by the {{ATLRepositoryLink|plugins/org.eclipse.m2m.atl.engine.vm/src/org/eclipse/m2m/atl/engine/vm/nativelib/ASMSet.java|ASMSet}} ({{ATLRepositoryLink|deprecated/org.atl.engine.vm/src/org/atl/engine/vm/nativelib/ASMSet.java|deprecated version}}) Java class. |
The underlying Java type is [http://java.sun.com/j2se/1.4.2/docs/api/java/util/HashSet.html java.util.HashSet]. | The underlying Java type is [http://java.sun.com/j2se/1.4.2/docs/api/java/util/HashSet.html java.util.HashSet]. | ||
Line 94: | Line 94: | ||
====Map==== | ====Map==== | ||
− | The ''Map'' OCL type is implemented by the | + | The ''Map'' OCL type is implemented by the {{ATLRepositoryLink|plugins/org.eclipse.m2m.atl.engine.vm/src/org/eclipse/m2m/atl/engine/vm/nativelib/ASMMap.java|ASMMap}} ({{ATLRepositoryLink|deprecated/org.atl.engine.vm/src/org/atl/engine/vm/nativelib/ASMMap.java|deprecated version}}) Java class. |
The underlying Java type is [http://java.sun.com/j2se/1.4.2/docs/api/java/util/HashMap.html java.util.HashMap]. | The underlying Java type is [http://java.sun.com/j2se/1.4.2/docs/api/java/util/HashMap.html java.util.HashMap]. | ||
==In the Bytecode Files (.asm)== | ==In the Bytecode Files (.asm)== | ||
− | Types are encoded using a scheme described in the Javadoc of class | + | Types are encoded using a scheme described in the Javadoc of class {{ATLRepositoryLink|plugins/org.eclipse.m2m.atl.engine.vm/src/org/eclipse/m2m/atl/engine/vm/ASMInterpreter.java|ASMInterpreter}}. |
− | This type encoding is also implemented at the beginning of | + | This type encoding is also implemented at the beginning of {{ATLRepositoryLink|dsls/ATL/Compiler/ATL.acg|the ATL compiler}}. |
[[Category:ATL]] | [[Category:ATL]] |
Revision as of 13:39, 3 June 2013
< To: ATL
The ATL standard library consists of the types built into ATL and of their operations. It is based on the OCL 2.0 standard library as described in chapter 11 of the UML 2.0 OCL Final Adopted specification. However, some extensions have been made (see ATL_FAQ#How_close_is_ATL_navigation_language_from_the_OCL_2.0_standard.3F).
This page describes how the ATL standard library is implemented in the two ATL Virtual Machines (VMs) available from Eclipse.org.
Contents
EMF VM Implementation
In EMFVM, the ATL standard library is mostly implemented in the ExecEnv Java class. Most types are not wrapped, and Java objects are used directly in many cases.
Regular VM Implementation
In the Regular VM, Java objects are wrapped by specific objects (instances of subclasses of ASMOclAny). In the description that follows, for each type T a CVS link is given to the Java class implementing T in the Regular ATL virtual machine. In each class, operations available from the ATL language (as opposed to implementation-specific methods) are represented as Java methods located below the following comment:
// Native Operations Below
In some of these classes, there are two additional comments delimiting:
- Operations specified by OCL 2.0:
// OCL Operations
- Operations added in ATL:
// Additional Operations
All of these Java classes are located in the org.atl.engine.vm.nativelib package.
When the description given here is not complete enough, it is possible to go and read the Java implementation. This way, it is possible to know, for instance: the list of available operations and their semantics (e.g. operation String.regexReplaceAll(a : String, b : String) is implemented in ASMString using java.lang.String.replaceAll(String a, String b)).
Primitive Types
Boolean
The Boolean OCL type is implemented by the ASMBoolean (deprecated version) Java class. The underlying Java type is boolean.
Integer
The Integer OCL type is implemented by the ASMInteger (deprecated version) Java class. The underlying Java type is int.
Real
The Real OCL type is implemented by the ASMReal (deprecated version) Java class. The underlying Java type is double.
String
The String OCL type is implemented by the ASMString (deprecated version) Java class. The underlying Java type is java.lang.String.
Collection Types
Collection
The Collection OCL type is implemented by the ASMCollection (deprecated version) Java class. There is no underlying Java type for this abstract type. However, all concrete collection types are implemented by sub-classes of java.util.Collection.
Bag
The Bag OCL type is implemented by the ASMBag (deprecated version) Java class. The underlying Java type is java.util.ArrayList.
OrderedSet
The OrderedSet OCL type is implemented by the ASMOrderedSet (deprecated version) Java class. The underlying Java type is java.util.LinkedHashSet.
Sequence
The Sequence OCL type is implemented by the ASMSequence (deprecated version) Java class. The underlying Java type is java.util.ArrayList.
Set
The Set OCL type is implemented by the ASMSet (deprecated version) Java class. The underlying Java type is java.util.HashSet.
Additional Types
The types described in this section are not part of the OCL 2.0 specification.
Map
The Map OCL type is implemented by the ASMMap (deprecated version) Java class. The underlying Java type is java.util.HashMap.
In the Bytecode Files (.asm)
Types are encoded using a scheme described in the Javadoc of class ASMInterpreter. This type encoding is also implemented at the beginning of the ATL compiler.