Recomendados
Mais conteúdo relacionado
Mais procurados
Mais procurados (20)
Destaque
Semelhante a Construction Techniques For Domain Specific Languages
Semelhante a Construction Techniques For Domain Specific Languages (20)
Mais de ThoughtWorks
Mais de ThoughtWorks (20)
Último
Último (20)
Construction Techniques For Domain Specific Languages
- 1. Construction Techniques for Domain-Specific Languages Brian Guthrie bguthrie@thoughtworks.com http://twitter.com/bguthrie
- 3. “a computer programming language of limited expressiveness focused on a particular domain.”
- 4. “a computer programming language of limited expressiveness focused on a particular domain.”
- 5. “a computer programming language of limited expressiveness focused on a particular domain.”
- 6. “a computer programming language of limited expressiveness focused on a particular domain.” “iced quad venti (with whip) skinny caramel macchiato”
- 7. “a computer programming language of limited expressiveness focused on a particular domain.” “iced quad venti (with whip) skinny caramel macchiato”
- 8. “a computer programming language of limited expressiveness focused on a particular domain.”
- 9. “a computer programming language of limited expressiveness focused on a particular domain.”
- 10. “a computer programming language of limited expressiveness focused on a particular domain.”
- 11. “a computer programming language of limited expressiveness focused on a particular domain.”
- 12. “a computer programming language of limited expressiveness focused on a particular domain.”
- 13. “a computer programming language of limited expressiveness focused on a particular domain.”
- 14. “a computer programming language of limited expressiveness focused on a particular domain.”
- 15. “a computer programming language of limited expressiveness focused on a particular domain.” <target name="test" depends="compile" description="Runs tests"> <javac destdir="${classes.dir}" debug="true" source="${javac.version}" target="${javac.version}"> <classpath refid="build.classpath"/> <src path="${test.dir}"/> <include name="**/*.java"/> </javac> </target>
- 16. “a computer programming language of limited expressiveness focused on a particular domain.” <target name="test" depends="compile" description="Runs tests"> <javac destdir="${classes.dir}" debug="true" source="${javac.version}" target="${javac.version}"> <classpath refid="build.classpath"/> <src path="${test.dir}"/> <include name="**/*.java"/> </javac> </target>
- 17. “a computer programming language of limited expressiveness focused on a particular domain.” <target name="test" depends="compile" description="Runs tests"> <javac destdir="${classes.dir}" debug="true" source="${javac.version}" target="${javac.version}"> <classpath refid="build.classpath"/> <src path="${test.dir}"/> <include name="**/*.java"/> </javac> </target>
- 18. 2 flavors internal external
- 19. 2 flavors internal external
- 20. 2 flavors internal external
- 21. API
- 23. fluent interface
- 24. a behavior capable of relaying or maintaining the instruction context for a series of method calls
- 25. methods make little sense out of context
- 26. [example]
- 28. a good candidate source: http://lobobrowser.org/cobra/java-html-parser.jsp
- 29. forces CHOICES early and often
- 30. be DECLARATIVE
- 31. be accepting
- 32. every API is a conversation http://www.flickr.com/photos/11739182@N03/1263985679/
- 33. with yourself
- 34. with your team members
- 37. example one method chaining | type transmogrification
- 38. example one method chaining | type transmogrification make modifier methods return the host object so that multiple modifiers can be invoked in a single expression.
- 39. example one method chaining | type transmogrification
- 40. example one method chaining | type transmogrification transform types as needed as part of a fluent interface call
- 41. start with the goal http://www.flickr.com/photos/keylosa/184606430/
- 42. Calendar
- 46. Mocha
- 48. what does expects return?
- 49. mocha/mock.rb (ArgumentIterator#each returns the Expectation-trust me)
- 51. the finishing problem when will it all end?
- 52. implied contract type transformations are hidden from the caller the system will arrive at some desired state
- 53. example two nested closures | semantic model
- 54. example two nested closures | semantic model
- 55. example two nested closures | semantic model express statement sub- elements of a function call by putting them into a closure in an argument
- 56. example two nested closures | semantic model
- 57. example two nested closures | semantic model the domain model underpinning the DSL
- 58. Awsymandias look on my racks, oh ye mighty, and despair. http://github.com/bguthrie/awsymandias http://www.flickr.com/photos/stuckincustoms/197905054/
- 60. persist metadata to S3
- 61. spin up in EC2
- 64. DSL is a wrapper for a rich domain model don’t corrupt it!
- 68. important definition != domain model
- 69. domain model dsl definition
- 70. A DSL is a language parse its inputs! keep your domain model clean!
- 72. example three literal extension | string polishing
- 73. example three literal extension | string polishing add methods to program literals “monkey patching”
- 74. example three literal extension | string polishing simple string substitutions to convert nearly code to actual code
- 75. the problem
- 77. the goal
- 78. web page to object model
- 80. org.w3c.Node
- 81. org.w3c.Node java.util.List
- 82. groovy already extends Node
- 83. DOMCategory
- 87. shotgun approach to open classes
- 90. irb
- 94. use (DOMCategory) { children(), attributes(), Element text(), name(), parent(), depthFirst(), breadthFirst() NodeList size(), list(), text(), child }
- 95. this is awesome!
- 96. and speaking of which...
- 97. we can do better!
- 101. search?
- 105. example four literal extension | method chaining
- 108. literal extension at the object level
- 109. jQuery objects act like arrays
- 110. jQuery objects are arrays
- 112. example five method chaining andChaining andChaining
- 114. message chains
- 115. mimic: cloning is expected and encouraged
- 117. “iced quad venti (with whip) skinny caramel macchiato”
- 122. calories http://www.flickr.com/photos/lifeontheedge/2077384723/ “the leaning tower of bacon”
- 126. a DSL is: - an API - a language - a conversation
- 127. be DECLARATIVE
- 128. know your audience
- 129. fluent interface
- 130. message chains
- 132. include use extend eval