forked from OSchip/llvm-project
cdce2fe561
Summary: This patch removes delayed folding and replaces it with forward peeking. Delayed folding was previously used as a solution to the problem that declaration doesn't have a representation in the AST. For example following code: ``` int a,b; ``` is expressed in the AST as: ``` TranslationUnitDecl |-... |-VarDecl `int a` `-VarDecl `int b` ``` And in the syntax tree we need: ``` *: TranslationUnit `-SimpleDeclaration |-int |-SimpleDeclarator | `-a |-, |-SimpleDeclarator | `-b |-; ``` So in words, we need to create SimpleDeclaration to be a parent of SimpleDeclarator nodes. Previously we used delayed folding to make sure SimpleDeclarations will be eventually created. And in case multiple declarators requested declaration creation, declaration range was extended to cover all declarators. This design started to be hard to reason about, so we decided to replace it with forward peeking. The last declarator node in the chain is responsible for creating SimpleDeclaration for the whole chain. Range of the declaration corresponds to the source range of the declarator node. Declarator decides whether its the last one by peeking to the next AST node (see `isResponsibleForCreatingDeclaration`). This patch does following: * Removed delayed folding logic * Tweaks Token.dumpForTests * Moves getQualifiedNameStart inside BuildTreeVisitor * Extracts BuildTreeVisitor.ProcessDeclaratorAndDeclaration * Renames Builder.getDeclRange to Builder.getDeclarationRange and uses the method in all places. * Adds a bunch of tests Reviewers: gribozavr2 Reviewed By: gribozavr2 Subscribers: cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D76922 |
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| INPUTS | ||
| bindings | ||
| cmake | ||
| docs | ||
| examples | ||
| include | ||
| lib | ||
| runtime | ||
| test | ||
| tools | ||
| unittests | ||
| utils | ||
| www | ||
| .clang-format | ||
| .clang-tidy | ||
| .gitignore | ||
| CMakeLists.txt | ||
| CODE_OWNERS.TXT | ||
| INSTALL.txt | ||
| LICENSE.TXT | ||
| ModuleInfo.txt | ||
| NOTES.txt | ||
| README.txt | ||
README.txt
//===----------------------------------------------------------------------===// // C Language Family Front-end //===----------------------------------------------------------------------===// Welcome to Clang. This is a compiler front-end for the C family of languages (C, C++, Objective-C, and Objective-C++) which is built as part of the LLVM compiler infrastructure project. Unlike many other compiler frontends, Clang is useful for a number of things beyond just compiling code: we intend for Clang to be host to a number of different source-level tools. One example of this is the Clang Static Analyzer. If you're interested in more (including how to build Clang) it is best to read the relevant web sites. Here are some pointers: Information on Clang: http://clang.llvm.org/ Building and using Clang: http://clang.llvm.org/get_started.html Clang Static Analyzer: http://clang-analyzer.llvm.org/ Information on the LLVM project: http://llvm.org/ If you have questions or comments about Clang, a great place to discuss them is on the Clang development mailing list: http://lists.llvm.org/mailman/listinfo/cfe-dev If you find a bug in Clang, please file it in the LLVM bug tracker: http://llvm.org/bugs/