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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef _IDLC_ASTEXPRESSION_HXX_
#define _IDLC_ASTEXPRESSION_HXX_
#include <idlc/idlc.hxx>
// Enum to define all the different operators to combine expressions
enum ExprComb
{
EC_add, // '+'
EC_minus, // '-'
EC_mul, // '*'
EC_div, // '/'
EC_mod, // '%'
EC_or, // '|'
EC_xor, // '^'
EC_and, // '&'
EC_left, // '<<'
EC_right, // '>>'
EC_u_plus, // unary '+'
EC_u_minus, // unary '-'
EC_bit_neg, // '~'
EC_none, // No operator (missing)
EC_symbol // a symbol (function or constant name)
};
// Enum to define the different kinds of evaluation possible
enum EvalKind
{
EK_const, // Must evaluate to constant
EK_positive_int // Must evaluate to positive integer
};
// Enum to define expression type
enum ExprType
{
ET_short, // Expression value is short
ET_ushort, // Expression value is unsigned short
ET_long, // Expression value is long
ET_ulong, // Expression value is unsigned long
ET_hyper, // Expression value is hyper (64 bit)
ET_uhyper, // Expression value is unsigned hyper
ET_float, // Expression value is 32-bit float
ET_double, // Expression value is 64-bit float
ET_char, // Expression value is char
ET_byte, // Expression value is byte
ET_boolean, // Expression value is boolean
ET_string, // Expression value is char *
ET_any, // Expression value is any of above
ET_void, // Expression value is void (absent)
ET_type, // Expression value is type
ET_none // Expression value is missing
};
// Structure to describe value of constant expression and its type
struct AstExprValue
{
union
{
sal_uInt8 byval; // Contains byte expression value
sal_Int16 sval; // Contains short expression value
sal_uInt16 usval; // Contains unsigned short expr value
sal_Int32 lval; // Contains long expression value
sal_uInt32 ulval; // Contains unsigned long expr value
sal_Int64 hval; // Contains hyper expression value
sal_uInt64 uhval; // Contains unsigned hyper expr value
sal_Bool bval; // Contains boolean expression value
float fval; // Contains 32-bit float expr value
double dval; // Contains 64-bit float expr value
sal_uInt32 eval; // Contains enumeration value
} u;
ExprType et;
};
const sal_Char* SAL_CALL exprTypeToString(ExprType t);
class AstExpression
{
public:
// Constructor(s)
AstExpression(ExprComb c, AstExpression *pExpr1, AstExpression *pExpr2);
AstExpression(sal_Int32 l);
AstExpression(sal_Int32 l, ExprType et);
AstExpression(sal_Int64 h);
AstExpression(sal_uInt64 uh);
AstExpression(double d);
AstExpression(::rtl::OString* scopedName);
virtual ~AstExpression();
// Data Accessors
AstScope* getScope()
{ return m_pScope; }
void setScope(AstScope* pScope)
{ m_pScope = pScope; }
sal_Int32 getLine()
{ return m_lineNo; }
void setLine(sal_Int32 l)
{ m_lineNo = l; }
const ::rtl::OString& getFileName()
{ return m_fileName; }
void setFileName(const ::rtl::OString& fileName)
{ m_fileName = fileName; }
ExprComb getCombOperator()
{ return m_combOperator; }
void setCombOperator(ExprComb new_ec)
{ m_combOperator = new_ec; }
AstExprValue* getExprValue()
{ return m_exprValue; }
void setExprValue(AstExprValue *pEv)
{ m_exprValue = pEv; }
AstExpression* getExpr1()
{ return m_subExpr1; }
void setExpr1(AstExpression *pExpr)
{ m_subExpr1 = pExpr; }
AstExpression* getExpr2()
{ return m_subExpr2; }
void setExpr2(AstExpression *pExpr)
{ m_subExpr2 = pExpr; }
::rtl::OString* getSymbolicName()
{ return m_pSymbolicName; }
void setSymbolicName(::rtl::OString* pSymbolicName)
{ m_pSymbolicName = pSymbolicName; }
// Evaluation and value coercion
AstExprValue* coerce(ExprType type, sal_Bool bAssign=sal_True);
// Evaluate then store value inside this AstExpression
void evaluate(EvalKind ek);
// Compare to AstExpressions
sal_Bool operator==(AstExpression *pExpr);
sal_Bool compare(AstExpression *pExpr);
::rtl::OString toString();
void dump() {}
private:
// Fill out the lineno, filename and definition scope details
void fillDefinitionDetails();
// Internal evaluation
AstExprValue* eval_internal(EvalKind ek);
// Evaluate different sets of operators
AstExprValue* eval_bin_op(EvalKind ek);
AstExprValue* eval_bit_op(EvalKind ek);
AstExprValue* eval_un_op(EvalKind ek);
AstExprValue* eval_symbol(EvalKind ek);
AstScope* m_pScope; // scope defined in
sal_Int32 m_lineNo; // line number defined in
::rtl::OString m_fileName; // fileName defined in
ExprComb m_combOperator;
AstExpression* m_subExpr1;
AstExpression* m_subExpr2;
AstExprValue* m_exprValue;
::rtl::OString* m_pSymbolicName;
};
#endif // _IDLC_ASTEXPRESSION_HXX_
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