mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 19:23:23 +01:00
139 lines
4.2 KiB
C++
139 lines
4.2 KiB
C++
//===-- llvm/ValueSymbolTable.h - Implement a Value Symtab ------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by Reid Spencer based on the original SymbolTable.h
|
|
// written by the LLVM research group and re-written by Reid Spencer.
|
|
// It 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 <map>
|
|
|
|
namespace llvm {
|
|
|
|
/// 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 {
|
|
|
|
/// @name Types
|
|
/// @{
|
|
public:
|
|
|
|
/// @brief A mapping of names to values.
|
|
typedef std::map<const std::string, 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() : 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(const std::string &name) const;
|
|
|
|
/// @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()); }
|
|
|
|
/// Given a base name, return a string that is either equal to it or
|
|
/// derived from it that does not already occur in the symbol table
|
|
/// for the specified type.
|
|
/// @brief Get a name unique to this symbol table
|
|
std::string getUniqueName(const std::string &BaseName) const;
|
|
|
|
/// 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
|
|
/// @{
|
|
public:
|
|
|
|
/// This method will strip the symbol table of its names.
|
|
/// @brief Strip the symbol table.
|
|
bool strip();
|
|
|
|
/// 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.
|
|
/// @brief Add a named value to the symbol table
|
|
void insert(Value *Val);
|
|
|
|
/// This method removes a value from the symbol table. The name of the
|
|
/// Value is extracted from \p Val and used to lookup the Value in the
|
|
/// symbol table. If the Value is not in the symbol table, this method
|
|
/// returns false.
|
|
/// @returns true if \p Val was successfully erased, false otherwise
|
|
/// @brief Remove a value from the symbol table.
|
|
bool erase(Value* Val);
|
|
|
|
/// Given a value with a non-empty name, remove its existing
|
|
/// entry from the symbol table and insert a new one for Name. This is
|
|
/// equivalent to doing "remove(V), V->Name = Name, insert(V)".
|
|
/// @brief Rename a value in the symbol table
|
|
bool rename(Value *V, const std::string &Name);
|
|
|
|
/// @}
|
|
/// @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
|