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-rw-r--r--include/llvm/ValueSymbolTable.h133
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diff --git a/include/llvm/ValueSymbolTable.h b/include/llvm/ValueSymbolTable.h
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-//===-- llvm/ValueSymbolTable.h - Implement a Value Symtab ------*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements the name/Value symbol table for LLVM.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_VALUE_SYMBOL_TABLE_H
-#define LLVM_VALUE_SYMBOL_TABLE_H
-
-#include "llvm/Value.h"
-#include "llvm/ADT/StringMap.h"
-#include "llvm/Support/DataTypes.h"
-
-namespace llvm {
- template<typename ValueSubClass, typename ItemParentClass>
- class SymbolTableListTraits;
- class BasicBlock;
- class Function;
- class NamedMDNode;
- class Module;
- class StringRef;
-
-/// This class provides a symbol table of name/value pairs. It is essentially
-/// a std::map<std::string,Value*> but has a controlled interface provided by
-/// LLVM as well as ensuring uniqueness of names.
-///
-class ValueSymbolTable {
- friend class Value;
- friend class SymbolTableListTraits<Argument, Function>;
- friend class SymbolTableListTraits<BasicBlock, Function>;
- friend class SymbolTableListTraits<Instruction, BasicBlock>;
- friend class SymbolTableListTraits<Function, Module>;
- friend class SymbolTableListTraits<GlobalVariable, Module>;
- friend class SymbolTableListTraits<GlobalAlias, Module>;
-/// @name Types
-/// @{
-public:
- /// @brief A mapping of names to values.
- typedef StringMap<Value*> ValueMap;
-
- /// @brief An iterator over a ValueMap.
- typedef ValueMap::iterator iterator;
-
- /// @brief A const_iterator over a ValueMap.
- typedef ValueMap::const_iterator const_iterator;
-
-/// @}
-/// @name Constructors
-/// @{
-public:
-
- ValueSymbolTable() : vmap(0), LastUnique(0) {}
- ~ValueSymbolTable();
-
-/// @}
-/// @name Accessors
-/// @{
-public:
-
- /// This method finds the value with the given \p Name in the
- /// the symbol table.
- /// @returns the value associated with the \p Name
- /// @brief Lookup a named Value.
- Value *lookup(StringRef Name) const { return vmap.lookup(Name); }
-
- /// @returns true iff the symbol table is empty
- /// @brief Determine if the symbol table is empty
- inline bool empty() const { return vmap.empty(); }
-
- /// @brief The number of name/type pairs is returned.
- inline unsigned size() const { return unsigned(vmap.size()); }
-
- /// This function can be used from the debugger to display the
- /// content of the symbol table while debugging.
- /// @brief Print out symbol table on stderr
- void dump() const;
-
-/// @}
-/// @name Iteration
-/// @{
-public:
- /// @brief Get an iterator that from the beginning of the symbol table.
- inline iterator begin() { return vmap.begin(); }
-
- /// @brief Get a const_iterator that from the beginning of the symbol table.
- inline const_iterator begin() const { return vmap.begin(); }
-
- /// @brief Get an iterator to the end of the symbol table.
- inline iterator end() { return vmap.end(); }
-
- /// @brief Get a const_iterator to the end of the symbol table.
- inline const_iterator end() const { return vmap.end(); }
-
-/// @}
-/// @name Mutators
-/// @{
-private:
- /// This method adds the provided value \p N to the symbol table. The Value
- /// must have a name which is used to place the value in the symbol table.
- /// If the inserted name conflicts, this renames the value.
- /// @brief Add a named value to the symbol table
- void reinsertValue(Value *V);
-
- /// createValueName - This method attempts to create a value name and insert
- /// it into the symbol table with the specified name. If it conflicts, it
- /// auto-renames the name and returns that instead.
- ValueName *createValueName(StringRef Name, Value *V);
-
- /// This method removes a value from the symbol table. It leaves the
- /// ValueName attached to the value, but it is no longer inserted in the
- /// symtab.
- void removeValueName(ValueName *V);
-
-/// @}
-/// @name Internal Data
-/// @{
-private:
- ValueMap vmap; ///< The map that holds the symbol table.
- mutable uint32_t LastUnique; ///< Counter for tracking unique names
-
-/// @}
-};
-
-} // End llvm namespace
-
-#endif