c1a4554c67
Change-Id: Ib30fe34123ad7e5d892e8db9c742e08c4ca8fcd2 Reviewed-on: https://gerrit.libreoffice.org/85477 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
139 lines
4.6 KiB
C++
139 lines
4.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_IDLC_INC_ASTEXPRESSION_HXX
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#define INCLUDED_IDLC_INC_ASTEXPRESSION_HXX
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#include <sal/config.h>
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#include <memory>
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#include "idlc.hxx"
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#include <o3tl/optional.hxx>
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// Enum to define all the different operators to combine expressions
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enum class ExprComb
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{
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Add, // '+'
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Minus, // '-'
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Mul, // '*'
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Div, // '/'
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Mod, // '%'
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Or, // '|'
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Xor, // '^'
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And, // '&'
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Left, // '<<'
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Right, // '>>'
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UPlus, // unary '+'
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UMinus, // unary '-'
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NONE, // No operator (missing)
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Symbol // a symbol (function or constant name)
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};
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// Enum to define expression type
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enum ExprType
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{
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ET_short, // Expression value is short
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ET_ushort, // Expression value is unsigned short
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ET_long, // Expression value is long
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ET_ulong, // Expression value is unsigned long
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ET_hyper, // Expression value is hyper (64 bit)
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ET_uhyper, // Expression value is unsigned hyper
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ET_float, // Expression value is 32-bit float
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ET_double, // Expression value is 64-bit float
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ET_char, // Expression value is char
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ET_byte, // Expression value is byte
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ET_boolean, // Expression value is boolean
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ET_string, // Expression value is char *
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ET_any, // Expression value is any of above
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ET_void, // Expression value is void (absent)
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ET_type, // Expression value is type
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ET_none // Expression value is missing
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};
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// Structure to describe value of constant expression and its type
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struct AstExprValue
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{
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union
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{
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sal_uInt8 byval; // Contains byte expression value
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sal_Int16 sval; // Contains short expression value
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sal_uInt16 usval; // Contains unsigned short expr value
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sal_Int32 lval; // Contains long expression value
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sal_uInt32 ulval; // Contains unsigned long expr value
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sal_Int64 hval; // Contains hyper expression value
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sal_uInt64 uhval; // Contains unsigned hyper expr value
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bool bval; // Contains boolean expression value
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float fval; // Contains 32-bit float expr value
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double dval; // Contains 64-bit float expr value
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} u;
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ExprType et;
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};
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const char* exprTypeToString(ExprType t);
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class AstExpression final
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{
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public:
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// Constructor(s)
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AstExpression(ExprComb c, AstExpression *pExpr1, AstExpression *pExpr2);
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AstExpression(sal_Int32 l);
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AstExpression(sal_Int32 l, ExprType et);
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AstExpression(sal_Int64 h);
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AstExpression(sal_uInt64 uh);
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AstExpression(double d);
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AstExpression(OString* scopedName);
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~AstExpression();
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// Data Accessors
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AstExprValue* getExprValue()
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{ return m_exprValue.get(); }
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// Evaluation and value coercion
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bool coerce(ExprType type);
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// Evaluate then store value inside this AstExpression
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void evaluate();
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// Compare LONG AstExpression values
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bool compareLong(AstExpression *pExpr);
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OString toString();
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private:
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// Evaluate different sets of operators
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std::unique_ptr<AstExprValue> eval_bin_op();
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std::unique_ptr<AstExprValue> eval_bit_op();
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std::unique_ptr<AstExprValue> eval_un_op();
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std::unique_ptr<AstExprValue> eval_symbol();
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ExprComb m_combOperator;
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std::unique_ptr<AstExpression>
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m_subExpr1;
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std::unique_ptr<AstExpression>
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m_subExpr2;
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std::unique_ptr<AstExprValue>
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m_exprValue;
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o3tl::optional<OString>
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m_xSymbolicName;
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};
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#endif // INCLUDED_IDLC_INC_ASTEXPRESSION_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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