1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
/* -*- 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_BASIC_SOURCE_INC_EXPR_HXX
#define INCLUDED_BASIC_SOURCE_INC_EXPR_HXX
#include <memory>
#include "opcodes.hxx"
#include "token.hxx"
#include <vector>
class SbiExprNode;
class SbiExpression;
class SbiExprList;
class SbiParser;
class SbiCodeGen;
class SbiSymDef;
class SbiProcDef;
typedef std::unique_ptr<SbiExprList> SbiExprListPtr;
typedef std::vector<SbiExprListPtr> SbiExprListVector;
struct SbVar {
SbiExprNode* pNext; // next element (for structures)
SbiSymDef* pDef; // symbol definition
SbiExprList* pPar; // optional parameters (is deleted)
SbiExprListVector* pvMorePar; // Array of arrays foo(pPar)(avMorePar[0])(avMorePar[1])...
};
struct KeywordSymbolInfo
{
OUString m_aKeywordSymbol;
SbxDataType m_eSbxDataType;
};
enum SbiExprType { // expression types:
SbSTDEXPR, // normal expression
SbLVALUE, // any lValue
SbSYMBOL, // any composite symbol
SbOPERAND // variable/function
};
enum SbiExprMode { // Expression context:
EXPRMODE_STANDARD, // default
EXPRMODE_STANDALONE, // a param1, param2 OR a( param1, param2 ) = 42
EXPRMODE_LPAREN_PENDING, // start of parameter list with bracket, special handling
EXPRMODE_LPAREN_NOT_NEEDED, // pending LPAREN has not been used
EXPRMODE_ARRAY_OR_OBJECT, // '=' or '(' or '.' found after ')' on ParenLevel 0, stopping
// expression, assuming array syntax a(...)[(...)] = ?
// or a(...).b(...)
EXPRMODE_EMPTY_PAREN // It turned out that the paren don't contain anything: a()
};
enum SbiNodeType {
SbxNUMVAL, // nVal = value
SbxSTRVAL, // aStrVal = value, before #i59791/#i45570: nStringId = value
SbxVARVAL, // aVar = value
SbxTYPEOF, // TypeOf ObjExpr Is Type
SbxNODE, // Node
SbxNEW, // new <type> expression
SbxDUMMY
};
enum RecursiveMode
{
UNDEFINED,
FORCE_CALL,
PREVENT_CALL
};
class SbiExprNode final { // operators (and operands)
friend class SbiExpression;
friend class SbiConstExpression;
union {
sal_uInt16 nTypeStrId; // pooled String-ID, #i59791/#i45570 Now only for TypeOf
double nVal; // numeric value
SbVar aVar; // or variable
};
OUString aStrVal; // #i59791/#i45570 Store string directly
std::unique_ptr<SbiExprNode> pLeft; // left branch
std::unique_ptr<SbiExprNode> pRight; // right branch (NULL for unary ops)
SbiExprNode* pWithParent; // node, whose member is "this per with"
SbiNodeType eNodeType;
SbxDataType eType;
SbiToken eTok;
bool bError; // true: error
void FoldConstants(SbiParser*);
void FoldConstantsBinaryNode(SbiParser*);
void FoldConstantsUnaryNode(SbiParser*);
void CollectBits(); // converting numbers to strings
bool IsOperand()
{ return eNodeType != SbxNODE && eNodeType != SbxTYPEOF && eNodeType != SbxNEW; }
bool IsNumber();
bool IsLvalue(); // true, if usable as Lvalue
void GenElement( SbiCodeGen&, SbiOpcode );
public:
SbiExprNode();
SbiExprNode( double, SbxDataType );
SbiExprNode( const OUString& );
SbiExprNode( const SbiSymDef&, SbxDataType, SbiExprListPtr = nullptr );
SbiExprNode( SbiExprNode*, SbiToken, SbiExprNode* );
SbiExprNode( SbiExprNode*, sal_uInt16 ); // #120061 TypeOf
SbiExprNode( sal_uInt16 ); // new <type>
~SbiExprNode();
bool IsValid() { return !bError; }
bool IsConstant() // true: constant operand
{ return eNodeType == SbxSTRVAL || eNodeType == SbxNUMVAL; }
void ConvertToIntConstIfPossible();
bool IsVariable();
void SetWithParent( SbiExprNode* p ) { pWithParent = p; }
SbxDataType GetType() { return eType; }
void SetType( SbxDataType eTp ) { eType = eTp; }
SbiNodeType GetNodeType() { return eNodeType; }
SbiSymDef* GetVar();
SbiSymDef* GetRealVar(); // last variable in x.y.z
SbiExprNode* GetRealNode(); // last node in x.y.z
const OUString& GetString() { return aStrVal; }
short GetNumber() { return static_cast<short>(nVal); }
SbiExprList* GetParameters() { return aVar.pPar; }
void Optimize(SbiParser*); // tree matching
void Gen( SbiCodeGen& rGen, RecursiveMode eRecMode = UNDEFINED ); // giving out a node
};
class SbiExpression {
friend class SbiExprList;
protected:
OUString aArgName;
SbiParser* pParser;
std::unique_ptr<SbiExprNode> pExpr; // expression tree
SbiExprType eCurExpr; // type of expression
SbiExprMode m_eMode; // expression context
bool bBased; // true: easy DIM-part (+BASE)
bool bError;
bool bByVal; // true: ByVal-Parameter
bool bBracket; // true: Parameter list with brackets
sal_uInt16 nParenLevel;
SbiExprNode* Term( const KeywordSymbolInfo* pKeywordSymbolInfo = nullptr );
SbiExprNode* ObjTerm( SbiSymDef& );
SbiExprNode* Operand( bool bUsedForTypeOf = false );
SbiExprNode* Unary();
SbiExprNode* Exp();
SbiExprNode* MulDiv();
SbiExprNode* IntDiv();
SbiExprNode* Mod();
SbiExprNode* AddSub();
SbiExprNode* Cat();
SbiExprNode* Like();
SbiExprNode* VBA_Not();
SbiExprNode* Comp();
SbiExprNode* Boolean();
public:
SbiExpression( SbiParser*, SbiExprType = SbSTDEXPR,
SbiExprMode eMode = EXPRMODE_STANDARD, const KeywordSymbolInfo* pKeywordSymbolInfo = nullptr ); // parsing Ctor
SbiExpression( SbiParser*, double, SbxDataType );
SbiExpression( SbiParser*, const SbiSymDef&, SbiExprListPtr = nullptr );
~SbiExpression();
OUString& GetName() { return aArgName; }
void SetBased() { bBased = true; }
bool IsBased() { return bBased; }
void SetByVal() { bByVal = true; }
bool IsBracket() { return bBracket; }
bool IsValid() { return pExpr->IsValid(); }
bool IsVariable() { return pExpr->IsVariable(); }
bool IsLvalue() { return pExpr->IsLvalue(); }
void ConvertToIntConstIfPossible() { pExpr->ConvertToIntConstIfPossible(); }
const OUString& GetString() { return pExpr->GetString(); }
SbiSymDef* GetRealVar() { return pExpr->GetRealVar(); }
SbiExprNode* GetExprNode() { return pExpr.get(); }
SbxDataType GetType() { return pExpr->GetType(); }
void Gen( RecursiveMode eRecMode = UNDEFINED );
};
class SbiConstExpression : public SbiExpression {
double nVal;
OUString aVal;
SbxDataType eType;
public: // numeric constant
SbiConstExpression( SbiParser* );
SbxDataType GetType() { return eType; }
const OUString& GetString() { return aVal; }
double GetValue() { return nVal; }
short GetShortValue();
};
class SbiExprList final { // class for parameters and dims
std::vector<std::unique_ptr<SbiExpression>> aData;
short nDim;
bool bError;
bool bBracket;
public:
SbiExprList();
~SbiExprList();
static SbiExprListPtr ParseParameters(SbiParser*, bool bStandaloneExpression = false, bool bPar = true);
static SbiExprListPtr ParseDimList( SbiParser* );
bool IsBracket() { return bBracket; }
bool IsValid() { return !bError; }
short GetSize() { return aData.size(); }
short GetDims() { return nDim; }
SbiExpression* Get( size_t );
void Gen( SbiCodeGen& rGen); // code generation
void addExpression( std::unique_ptr<SbiExpression>&& pExpr );
};
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
