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100 lines
3.8 KiB
C++
100 lines
3.8 KiB
C++
//===- SourceLanguage.h - Interact with source languages --------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the abstract SourceLanguage interface, which is used by the
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// LLVM debugger to parse source-language expressions and render program objects
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// into a human readable string. In general, these classes perform all of the
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// analysis and interpretation of the language-specific debugger information.
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//
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// This interface is designed to be completely stateless, so all methods are
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// const.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_DEBUGGER_SOURCELANGUAGE_H
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#define LLVM_DEBUGGER_SOURCELANGUAGE_H
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#include <string>
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namespace llvm {
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class GlobalVariable;
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class SourceFileInfo;
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class SourceFunctionInfo;
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class ProgramInfo;
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class RuntimeInfo;
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struct SourceLanguage {
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virtual ~SourceLanguage() {}
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/// getSourceLanguageName - This method is used to implement the 'show
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/// language' command in the debugger.
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virtual const char *getSourceLanguageName() const = 0;
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//===------------------------------------------------------------------===//
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// Methods used to implement debugger hooks.
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//
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/// printInfo - Implementing this method allows the debugger to use
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/// language-specific 'info' extensions, e.g., 'info selectors' for objc.
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/// This method should return true if the specified string is recognized.
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///
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virtual bool printInfo(const std::string &What) const {
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return false;
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}
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/// lookupFunction - Given a textual function name, return the
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/// SourceFunctionInfo descriptor for that function, or null if it cannot be
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/// found. If the program is currently running, the RuntimeInfo object
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/// provides information about the current evaluation context, otherwise it
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/// will be null.
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///
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virtual SourceFunctionInfo *lookupFunction(const std::string &FunctionName,
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ProgramInfo &PI,
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RuntimeInfo *RI = 0) const {
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return 0;
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}
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//===------------------------------------------------------------------===//
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// Methods used to parse various pieces of program information.
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//
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/// createSourceFileInfo - This method can be implemented by the front-end
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/// if it needs to keep track of information beyond what the debugger
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/// requires.
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virtual SourceFileInfo *
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createSourceFileInfo(const GlobalVariable *Desc, ProgramInfo &PI) const;
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/// createSourceFunctionInfo - This method can be implemented by the derived
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/// SourceLanguage if it needs to keep track of more information than the
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/// SourceFunctionInfo has.
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virtual SourceFunctionInfo *
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createSourceFunctionInfo(const GlobalVariable *Desc, ProgramInfo &PI) const;
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//===------------------------------------------------------------------===//
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// Static methods used to get instances of various source languages.
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//
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/// get - This method returns a source-language instance for the specified
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/// Dwarf 3 language identifier. If the language is unknown, an object is
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/// returned that can support some minimal operations, but is not terribly
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/// bright.
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static const SourceLanguage &get(unsigned ID);
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/// get*Instance() - These methods return specific instances of languages.
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///
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static const SourceLanguage &getCFamilyInstance();
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static const SourceLanguage &getCPlusPlusInstance();
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static const SourceLanguage &getUnknownLanguageInstance();
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};
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}
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#endif
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