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starmath: Make DoProduct()/DoSum()/DoRelation() return SmNode

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to reduce an excessive number of stack operations.

Change-Id: Ia4ef08dce76d318c56bf7d112f686e13d1b2660e
Reviewed-on: https://gerrit.libreoffice.org/35551
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Takeshi Abe <tabe@fixedpoint.jp>
This commit is contained in:
Takeshi Abe
2017-03-23 12:10:46 +09:00
parent 1670cc25bc
commit faeda4e29e
2 changed files with 22 additions and 37 deletions
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6
starmath/inc/parse.hxx
View File

@@ -64,9 +64,9 @@ class SmParser
SmTableNode *DoTable();
void DoLine();
SmNode *DoExpression();
void DoRelation();
void DoSum();
void DoProduct();
SmNode *DoRelation();
SmNode *DoSum();
SmNode *DoProduct();
SmNode *DoSubSup(TG nActiveGroup, SmNode *pGivenNode);
SmNode *DoOpSubSup();
SmNode *DoPower();

53
starmath/source/parse.cxx
View File

@@ -1037,15 +1037,9 @@ SmNode *SmParser::DoExpression()
}
SmNodeArray RelationArray;
DoRelation();
RelationArray.push_back(popOrZero(m_aNodeStack));
RelationArray.push_back(DoRelation());
while (m_aCurToken.nLevel >= 4)
{
DoRelation();
RelationArray.push_back(popOrZero(m_aNodeStack));
}
RelationArray.push_back(DoRelation());
if (RelationArray.size() > 1)
{
@@ -1061,41 +1055,35 @@ SmNode *SmParser::DoExpression()
}
}
void SmParser::DoRelation()
SmNode *SmParser::DoRelation()
{
DoSum();
SmNode *pFirst = DoSum();
while (TokenInGroup(TG::Relation))
{
std::unique_ptr<SmStructureNode> pSNode(new SmBinHorNode(m_aCurToken));
SmNode *pFirst = popOrZero(m_aNodeStack);
SmNode *pSecond = DoOpSubSup();
DoSum();
pSNode->SetSubNodes(pFirst, pSecond, popOrZero(m_aNodeStack));
m_aNodeStack.push_front(std::move(pSNode));
SmNode *pThird = DoSum();
pSNode->SetSubNodes(pFirst, pSecond, pThird);
pFirst = pSNode.release();
}
return pFirst;
}
void SmParser::DoSum()
SmNode *SmParser::DoSum()
{
DoProduct();
SmNode *pFirst = DoProduct();
while (TokenInGroup(TG::Sum))
{
std::unique_ptr<SmStructureNode> pSNode(new SmBinHorNode(m_aCurToken));
SmNode *pFirst = popOrZero(m_aNodeStack);
SmNode *pSecond = DoOpSubSup();
DoProduct();
pSNode->SetSubNodes(pFirst, pSecond, popOrZero(m_aNodeStack));
m_aNodeStack.push_front(std::move(pSNode));
SmNode *pThird = DoProduct();
pSNode->SetSubNodes(pFirst, pSecond, pThird);
pFirst = pSNode.release();
}
return pFirst;
}
void SmParser::DoProduct()
SmNode *SmParser::DoProduct()
{
SmNode *pFirst = DoPower();
@@ -1165,7 +1153,7 @@ void SmParser::DoProduct()
}
pFirst = pSNode;
}
m_aNodeStack.emplace_front(pFirst);
return pFirst;
}
SmNode *SmParser::DoSubSup(TG nActiveGroup, SmNode *pGivenNode)
@@ -1197,7 +1185,7 @@ SmNode *SmParser::DoSubSup(TG nActiveGroup, SmNode *pGivenNode)
if (eType == TFROM || eType == TTO)
{
// parse limits in old 4.0 and 5.0 style
DoRelation();
m_aNodeStack.emplace_front(DoRelation());
}
else
m_aNodeStack.emplace_front(DoTerm(true));
@@ -2072,11 +2060,8 @@ SmTableNode *SmParser::DoBinom()
NextToken();
DoSum();
DoSum();
SmNode *pSecond = popOrZero(m_aNodeStack);
SmNode *pFirst = popOrZero(m_aNodeStack);
SmNode *pFirst = DoSum();
SmNode *pSecond = DoSum();
pSNode->SetSubNodes(pFirst, pSecond);
return pSNode.release();
}