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research:jtransformer:api:java:pefs:4.2:omit_lambdaparametertypest [2018/05/09 01:59] (current)
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 +{{page>​prologast_bodypef_index&​fullpage&​nofooter}}
 +----
  
 +=== omit_lambdaParameterTypesT(#​id) ===
 +
 +This fact is only used for preserving the original appearance of the source code after transformations. It declares that the types of the parameters of a lambda expression are omitted in the code. This behaviour is applied to ALL parameters of a specific lambda expression.
 +
 +<Code lang-java>​(e) -> System.out.println("​button pressed"​));​ </​Code>​
 +instead of
 +<Code lang-java>​(ActionEvent e) -> System.out.println("​button pressed"​));​ </​Code>​
 +
 +=== Arguments ===
 +== ==
 +**#id:** [[lambdat|lambdaT]]\\ ​
 +ID of the lambdaT element.
 +
 +
 +=== Sample Java Source ===
 +
 +==  ==
 +
 +<Code lang-java>​
 +JButton button = new JButton();
 +button.addActionListener((e) -> System.out.println("​button pressed"​));​
 +</​Code>​
 +
 +
 +=== Its PEF Representation ===
 +
 +==  ==
 +<​Code>​
 +localT(#​Button,​ ..., '​button',​ ...).
 +...
 +callT(#​Parent,​ ..., [#Lambda], #​RefToAddActionListener,​ [], ...).
 +lambdaT(#​Lambda,​ #Parent, #Enclosing, [#​Parameter],​ #Body).
 +omit_lambdaParameterTypesT(#​Lamba).
 +paramT(#​Parameter,​ #Lambda, #​RefToActionEvent '​e'​). ​            // Paramter of the lambda expression
 +callT(#​Body,​ #Lambda, #Lambda, ...).                            // Sysout call (Body of the lambda expression)
 +</​Code>​
 +
 +=== AST Specification ===
 +== ==
 +<​Code>​
 +ast_relation_type_spec(omit_lambdaParameterTypesT,​[
 + ast_arg(id,​ mult(1,​1,​no ), id, [lambdaT])
 +]).
 +</​Code>​
research/jtransformer/api/java/pefs/4.2/omit_lambdaparametertypest.txt · Last modified: 2018/05/09 01:59 (external edit)

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