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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">You don’t need a plugin for the alternate spellings, just use –fno-operator-names. If you really need to detect them, find the IdentiferInfo object, and check
isCPlusPlusOperatorKeyword.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">I don’t see anything Digraph specific however…<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><a name="_MailEndCompose"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></a></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> cfe-dev [mailto:cfe-dev-bounces@lists.llvm.org]
<b>On Behalf Of </b>Jacob Bandes-Storch via cfe-dev<br>
<b>Sent:</b> Friday, June 15, 2018 9:36 AM<br>
<b>To:</b> Clang Dev <cfe-dev@lists.llvm.org><br>
<b>Subject:</b> [cfe-dev] Diagnosing alternative operator spellings & digraphs from a plugin<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I'm interested in writing a plugin to disallow <a href="https://en.cppreference.com/w/cpp/language/operator_alternative">
alternative spelling</a>/digraphs for operators and tokens. However I haven't been able to find a way to access this information from a PluginASTAction.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I see that the digraphs (<: %: etc.) are handled in Lexer.cpp, but perhaps the only way to get the original spelling is Lexer::getSpelling(). Would I be able to get access to the Lexer, SourceLocation, SourceManager, etc. from a PluginASTAction
in order to call this?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I also found the `CXX_KEYWORD_OPERATOR`s in TokenKinds.def, but it looks like these get mapped to the same token kinds as the regular operator spellings so I'm not sure how to distinguish them after the AST is built.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Any recommendations would be appreciated, thanks!<o:p></o:p></p>
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<p class="MsoNormal">Jacob<o:p></o:p></p>
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