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https://github.com/c64scene-ar/llvm-6502.git
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f987425657
This patch adds a preprocessor that can expand nested for-loops for saving some copy-n-paste in *.td files. The preprocessor is not yet integrated with TGParser, and so it has no direct effect on *.td inputs. However, you may preprocess an td input (and only preprocess it). To test the proprecessor, type: tblgen -E -o $@ $< git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141079 91177308-0d34-0410-b5e6-96231b3b80d8
53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
//===- TGPreprocessor.h - Preprocessor for TableGen Files -------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This class represents the Preprocessor for tablegen files.
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//
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//===----------------------------------------------------------------------===//
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#ifndef TGPREPROCESSOR_H
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#define TGPREPROCESSOR_H
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#include <vector>
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namespace llvm {
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class MemoryBuffer;
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class SourceMgr;
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class tool_output_file;
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class TGPPLexer;
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class TGPPRange;
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class TGPPRecord;
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typedef std::vector<TGPPRecord> TGPPRecords;
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class TGPreprocessor {
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SourceMgr &SrcMgr;
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tool_output_file &Out;
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TGPPLexer *Lexer;
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TGPPRecords *CurRecords;
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bool ParseBlock(bool TopLevel);
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bool ParseForLoop();
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bool ParseRange(TGPPRange *Range);
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public:
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TGPreprocessor(SourceMgr &SM, tool_output_file &O)
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: SrcMgr(SM), Out(O), Lexer(NULL), CurRecords(NULL) {
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}
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/// PreprocessFile - Main entrypoint for preprocess a tblgen file. These
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/// preprocess routines return true on error, or false on success.
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bool PreprocessFile();
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};
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} // namespace llvm
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#endif /* TGPREPROCESSOR_H */
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