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< > BotCompany Repo | #1002534 // Has Default Constructor Bot

JavaX source code [tags: use-pretranspiled] - run with: x30.jar

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!752
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!include #1002529 // Explain
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answer {
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  if "does this class have a default constructor: *" exceptionToUser {
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   S java = m.unq(0);
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    Explain explain = jExplainFull(java, "source");
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    // make sure it's actually a class declaration
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    //assertTrue("Bad class: " + explain.className(), litlist("classdecl", "emptyclass").contains(explain.className()));
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    // go to class declaration instead
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    Explain e2 = explain.findFirst("classdecl");
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    if (e2 == null)
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      ret "oops " + structure(explain);
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    explain = e2;
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    L<Explain> ctors = explain.findAll2("constructordecl");
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    if (empty(ctors)) ret "Yes - an invisible one.";
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    for (Explain ctor : ctors) {
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      Explain args = ctor.findFirst("argsdecl2");
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      if (args.findFirst("argsdecl") != null) // has arguments - not the default constructor
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        continue;
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      ret "Yes.";
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    }
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    ret "No.";
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  }
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}

Author comment

Began life as a copy of #1002532

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Snippet ID: #1002534
Snippet name: Has Default Constructor Bot
Eternal ID of this version: #1002534/1
Text MD5: ab5c01fb757a961fd9d17ca4f7f32226
Transpilation MD5: df56e82046c8294070b53cc5e9823085
Author: stefan
Category: eleu / thinking about javax
Type: JavaX source code
Public (visible to everyone): Yes
Archived (hidden from active list): No
Created/modified: 2016-02-02 03:21:26
Source code size: 936 bytes / 32 lines
Pitched / IR pitched: No / No
Views / Downloads: 572 / 995
Referenced in: [show references]