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Better don't touch stack.

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--HG--
branch : develop
This commit is contained in:
Roman Telezhynskyi 2015-10-28 18:37:36 +02:00
parent 84f1c4e10f
commit ba89a2856d
1 changed files with 33 additions and 34 deletions
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47
src/libs/qmuparser/qmuparserbase.cpp
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@ -841,13 +841,13 @@ void QmuParserBase::ApplyIfElse(QStack<token_type> &a_stOpt, QStack<token_type>
while (a_stOpt.size() && a_stOpt.top().GetCode()==cmELSE) while (a_stOpt.size() && a_stOpt.top().GetCode()==cmELSE)
{ {
token_type opElse = a_stOpt.pop(); token_type opElse = a_stOpt.pop();
Q_ASSERT(a_stOpt.size()>0); //-V654 Q_ASSERT(a_stOpt.size()>0);
// Take the value associated with the else branch from the value stack // Take the value associated with the else branch from the value stack
token_type vVal2 = a_stVal.pop(); token_type vVal2 = a_stVal.pop();
Q_ASSERT(a_stOpt.size()>0); //-V654 Q_ASSERT(a_stOpt.size()>0);
Q_ASSERT(a_stVal.size()>=2); //-V654 Q_ASSERT(a_stVal.size()>=2);
// it then else is a ternary operator Pop all three values from the value s // it then else is a ternary operator Pop all three values from the value s
// tack and just return the right value // tack and just return the right value
@ -857,8 +857,8 @@ void QmuParserBase::ApplyIfElse(QStack<token_type> &a_stOpt, QStack<token_type>
a_stVal.push( (qFuzzyCompare(vExpr.GetVal()+1, 1+0)==false) ? vVal1 : vVal2); a_stVal.push( (qFuzzyCompare(vExpr.GetVal()+1, 1+0)==false) ? vVal1 : vVal2);
token_type opIf = a_stOpt.pop(); token_type opIf = a_stOpt.pop();
Q_ASSERT(opElse.GetCode()==cmELSE); //-V654 Q_ASSERT(opElse.GetCode()==cmELSE);
Q_ASSERT(opIf.GetCode()==cmIF); //-V654 Q_ASSERT(opIf.GetCode()==cmIF);
m_vRPN.AddIfElse(cmENDIF); m_vRPN.AddIfElse(cmENDIF);
} // while pending if-else-clause found } // while pending if-else-clause found
@ -877,7 +877,7 @@ void QmuParserBase::ApplyBinOprt(QStack<token_type> &a_stOpt, QStack<token_type>
} }
else else
{ {
Q_ASSERT(a_stVal.size()>=2); //-V654 Q_ASSERT(a_stVal.size()>=2);
token_type valTok1 = a_stVal.pop(), token_type valTok1 = a_stVal.pop(),
valTok2 = a_stVal.pop(), valTok2 = a_stVal.pop(),
optTok = a_stOpt.pop(), optTok = a_stOpt.pop(),
@ -913,9 +913,10 @@ void QmuParserBase::ApplyBinOprt(QStack<token_type> &a_stOpt, QStack<token_type>
*/ */
void QmuParserBase::ApplyRemainingOprt(QStack<token_type> &stOpt, QStack<token_type> &stVal) const void QmuParserBase::ApplyRemainingOprt(QStack<token_type> &stOpt, QStack<token_type> &stVal) const
{ {
const ECmdCode code = stOpt.top().GetCode(); while (stOpt.size() && stOpt.top().GetCode() != cmBO && stOpt.top().GetCode() != cmIF)
while (stOpt.size() && code != cmBO && code != cmIF)
{ {
const ECmdCode code = stOpt.top().GetCode();
if ((code >= cmLE && code <= cmASSIGN) || code == cmOPRT_INFIX || code == cmOPRT_BIN) if ((code >= cmLE && code <= cmASSIGN) || code == cmOPRT_INFIX || code == cmOPRT_BIN)
{ {
if (code==cmOPRT_INFIX) if (code==cmOPRT_INFIX)
@ -1175,7 +1176,7 @@ qreal QmuParserBase::ParseCmdCodeBulk(int nOffset, int nThreadID) const
// The index of the string argument in the string table // The index of the string argument in the string table
int iIdxStack = pTok->Fun.idx; int iIdxStack = pTok->Fun.idx;
Q_ASSERT( iIdxStack>=0 && iIdxStack<m_vStringBuf.size() ); //-V654 Q_ASSERT( iIdxStack>=0 && iIdxStack<m_vStringBuf.size() );
switch (pTok->Fun.argc) // switch according to argument count switch (pTok->Fun.argc) // switch according to argument count
{ {
@ -1395,8 +1396,7 @@ void QmuParserBase::CreateRPN() const
ApplyRemainingOprt(stOpt, stVal); ApplyRemainingOprt(stOpt, stVal);
// Check if the bracket content has been evaluated completely // Check if the bracket content has been evaluated completely
token_type &topToken = stOpt.top(); if (stOpt.size() && stOpt.top().GetCode()==cmBO)
if (stOpt.size() && topToken.GetCode()==cmBO)
{ {
// if opt is ")" and opta is "(" the bracket has been evaluated, now its time to check // if opt is ")" and opta is "(" the bracket has been evaluated, now its time to check
// if there is either a function or a sign pending // if there is either a function or a sign pending
@ -1409,17 +1409,17 @@ void QmuParserBase::CreateRPN() const
stOpt.pop(); // Take opening bracket from stack stOpt.pop(); // Take opening bracket from stack
if (iArgCount>1 && ( stOpt.size()==0 || (topToken.GetCode()!=cmFUNC && if (iArgCount>1 && ( stOpt.size()==0 || (stOpt.top().GetCode()!=cmFUNC &&
topToken.GetCode()!=cmFUNC_BULK && stOpt.top().GetCode()!=cmFUNC_BULK &&
topToken.GetCode()!=cmFUNC_STR) ) ) stOpt.top().GetCode()!=cmFUNC_STR) ) )
{ {
Error(ecUNEXPECTED_ARG, m_pTokenReader->GetPos()); Error(ecUNEXPECTED_ARG, m_pTokenReader->GetPos());
} }
// The opening bracket was popped from the stack now check if there // The opening bracket was popped from the stack now check if there
// was a function before this bracket // was a function before this bracket
if (stOpt.size() && topToken.GetCode()!=cmOPRT_INFIX && topToken.GetCode()!=cmOPRT_BIN && if (stOpt.size() && stOpt.top().GetCode()!=cmOPRT_INFIX && stOpt.top().GetCode()!=cmOPRT_BIN &&
topToken.GetFuncAddr()!=0) stOpt.top().GetFuncAddr()!=0)
{ {
ApplyFunc(stOpt, stVal, iArgCount); ApplyFunc(stOpt, stVal, iArgCount);
} }
@ -1453,16 +1453,16 @@ void QmuParserBase::CreateRPN() const
case cmLOR: case cmLOR:
case cmASSIGN: case cmASSIGN:
case cmOPRT_BIN: case cmOPRT_BIN:
// A binary operator (user defined or built in) has been found.
while ( stOpt.size() && stOpt.top().GetCode() != cmBO && stOpt.top().GetCode() != cmELSE &&
stOpt.top().GetCode() != cmIF)
{ {
const token_type &topToken = stOpt.top(); const token_type &topToken = stOpt.top();
// A binary operator (user defined or built in) has been found.
while ( stOpt.size() && topToken.GetCode() != cmBO && topToken.GetCode() != cmELSE &&
topToken.GetCode() != cmIF)
{
int nPrec1 = GetOprtPrecedence(topToken), int nPrec1 = GetOprtPrecedence(topToken),
nPrec2 = GetOprtPrecedence(opt); nPrec2 = GetOprtPrecedence(opt);
if (topToken.GetCode()==opt.GetCode()) const ECmdCode code = topToken.GetCode();
if (code==opt.GetCode())
{ {
// Deal with operator associativity // Deal with operator associativity
EOprtAssociativity eOprtAsct = GetOprtAssociativity(opt); EOprtAssociativity eOprtAsct = GetOprtAssociativity(opt);
@ -1477,7 +1477,7 @@ void QmuParserBase::CreateRPN() const
// In case the operators are not equal the precedence decides alone... // In case the operators are not equal the precedence decides alone...
break; break;
} }
if (topToken.GetCode()==cmOPRT_INFIX) if (code==cmOPRT_INFIX)
{ {
ApplyFunc(stOpt, stVal, 1); ApplyFunc(stOpt, stVal, 1);
} }
@ -1495,7 +1495,6 @@ void QmuParserBase::CreateRPN() const
// The operator can't be evaluated right now, push back to the operator stack // The operator can't be evaluated right now, push back to the operator stack
stOpt.push(opt); stOpt.push(opt);
break; break;
}
// //
// Last section contains functions and operators implicitely mapped to functions // Last section contains functions and operators implicitely mapped to functions
// //
@ -1552,7 +1551,7 @@ void QmuParserBase::CreateRPN() const
} }
// get the last value (= final result) from the stack // get the last value (= final result) from the stack
Q_ASSERT(stArgCount.size()==1); //-V654 Q_ASSERT(stArgCount.size()==1);
m_nFinalResultIdx = stArgCount.top(); m_nFinalResultIdx = stArgCount.top();
if (m_nFinalResultIdx==0) if (m_nFinalResultIdx==0)
{ {