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/* $Id$
*
* BuiltinSymbolTable: SymbolTable preloaded with symbols from std.standard.
*
* Copyright (C) 2008-2009 FAUmachine Team <info@faumachine.org>.
* This program is free software. You can redistribute it and/or modify it
* under the terms of the GNU General Public License, either version 2 of
* the License, or (at your option) any later version. See COPYING.
*/
#ifndef __BUILTIN_SYMBOL_TABLE_HPP_INCLUDED
#define __BUILTIN_SYMBOL_TABLE_HPP_INCLUDED
#include "frontend/misc/SymbolTable.hpp"
namespace ast {
/** boolean values as represented in the builtin symbol table
* note: true is 0 in vhdl
*/
enum vhdl_bool_vals {
/** integer value of boolean false in VHDL */
VHDL_FALSE = 0,
/** integer value of boolean true in VHDL */
VHDL_TRUE = 1,
};
//! the SymbolTable with predefined internal symbols.
/** This class predefines all symbols from std.standard.
* (or at least to the extent the current implementation for the framework
* allows).
*/
class BuiltinSymbolTable : public SymbolTable {
public:
//! c'tor
BuiltinSymbolTable();
/** create a new region and push it onto the stack. should be
* called when entering a nested declarative region.
*
* If the regionStack has the size 1, it must be a library unit.
* Hence the library std and the package standard will be made
* visible.
*/
virtual void pushNewRegion(void);
private:
/** register all builtins of std.standard.
* Will call addStandardStd to add the actual
* symbols.
*
*/
void registerBuiltinSymbols(void);
/** add all symbols of std.standard. SymbolTable needs to
* have entered the package standard of library std already.
*
* @param standardSyms (empty) list to which all declarations
* should get attached to (to be correctly stored in the
* AST).
*/
void addStandardStd(std::list<SymbolDeclaration*> &standardSyms);
/** add all internal attributes to __attributes__ */
void addAttributes(void);
/** add time to std.standard.
* @param standardSyms list of package symbols of standard
*/
void addStdStandardTime(std::list<SymbolDeclaration*> &standardSyms);
/** register a physical type unit in std.standard */
void addPhysUnit(
std::list<SymbolDeclaration*> &standardSyms,
std::list<PhysicalTypeUnit*> &units,
const char *name,
universal_integer factor,
const char *refName
);
/** add character enumeration literal c to Enumeration element list.
* @param elems list of enumeration elements
* @param c character literal
*/
static void
addEnumChar(std::list<FunctionDeclaration*> &elems, char c);
/** add string enumeration literal s to Enumeration element list.
* @param elems list of enumeration elements
* @param c string literal.
*/
static void
addEnumStr(std::list<FunctionDeclaration*> &elems, const char *s);
/** register the "foreign" attribute
* @param stringT type declaration of "string"
* @param standardSyms list of packages symbols of standard
*/
void
addForeignAttribute(
const TypeDeclaration *stringT,
std::list<SymbolDeclaration*> &standardSyms);
/** register given attribute.
* @param name name of the attribute
* @param stdType return type (in std.standard) of the
* attribute.
*/
void
addAttributeDecl(
const char *name,
const char *stdType);
/** should we import std.standard when registering a LibUnit? */
bool mayAddStdStandard;
};
}; /* namespace ast */
#endif /* __BUILTIN_SYMBOL_TABLE_HPP_INCLUDED */
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