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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_IDLC_INC_IDLC_ASTEXPRESSION_HXX
#define INCLUDED_IDLC_INC_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 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
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(OString* scopedName);
virtual ~AstExpression();
// Data Accessors
ExprComb getCombOperator()
{ return m_combOperator; }
AstExprValue* getExprValue()
{ return m_exprValue; }
// Evaluation and value coercion
bool coerce(ExprType type);
// Evaluate then store value inside this AstExpression
void evaluate();
// Compare to AstExpressions
bool operator==(AstExpression *pExpr);
bool compare(AstExpression *pExpr);
OString toString();
private:
// Fill out the lineno, filename and definition scope details
void fillDefinitionDetails();
// Evaluate different sets of operators
AstExprValue* eval_bin_op();
AstExprValue* eval_bit_op();
AstExprValue* eval_un_op();
AstExprValue* eval_symbol();
AstScope* m_pScope; // scope defined in
sal_Int32 m_lineNo; // line number defined in
OString m_fileName; // fileName defined in
ExprComb m_combOperator;
AstExpression* m_subExpr1;
AstExpression* m_subExpr2;
AstExprValue* m_exprValue;
OString* m_pSymbolicName;
};
#endif // INCLUDED_IDLC_INC_IDLC_ASTEXPRESSION_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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