本文整理汇总了C++中ExpGenerator::genItemExpr方法的典型用法代码示例。如果您正苦于以下问题：C++ ExpGenerator::genItemExpr方法的具体用法？C++ ExpGenerator::genItemExpr怎么用？C++ ExpGenerator::genItemExpr使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类ExpGenerator的用法示例。
在下文中一共展示了ExpGenerator::genItemExpr方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: codeGen
short BiArithCount::codeGen(Generator * generator)
{
Attributes ** attr;
ExpGenerator * eg = generator->getExpGenerator();
if (eg->genItemExpr(this, &attr, (1+getArity()), -1) == 1)
return 0;
// if temp space is needed for this operation, set it.
if (attr[0]->isComplexType())
{
eg->addTempsLength(((ComplexType *)attr[0])->setTempSpaceInfo(getOperatorType(),
#pragma nowarn(1506) // warning elimination
eg->getTempsLength()));
#pragma warn(1506) // warning elimination
}
ex_arith_count_clause * arith_clause =
new(generator->getSpace())
ex_arith_count_clause(getOperatorType(),
attr,
generator->getSpace());
generator->getExpGenerator()->linkClause(this, arith_clause);
return 0;
}示例2: codeGen
short UnArith::codeGen(Generator * generator)
{
Attributes ** attr;
ExpGenerator * eg = generator->getExpGenerator();
if (eg->genItemExpr(this, &attr, (1+getArity()), -1) == 1)
return 0;
ex_arith_clause * arith_clause =
new(generator->getSpace())
ex_arith_clause(getOperatorType(), attr, generator->getSpace(),
0, FALSE);
generator->getExpGenerator()->linkClause(this, arith_clause);
return 0;
}示例3: codeGen
// ItmBlockFunction::codeGen
//
// The Block function executes the code represented by both its children and
// then returns the result of the right child (child(1)).
//
short ItmBlockFunction::codeGen(Generator * generator) {
// Get local handles...
//
Attributes **attr;
Space* space = generator->getSpace();
CollHeap *heap = generator->wHeap();
ExpGenerator *exp = generator->getExpGenerator();
// If this Block has already been codeGenned, then bug out...
// Otherwise, allocate space for the result if necessary and set
// attr[0] to point to the result attribute data. Also, mark this
// node as codeGenned.
//
if (exp->genItemExpr(this, &attr, 2, 0) == 1)
return 0;
// CodeGen the left child.
//
child(0)->codeGen(generator);
// CodeGen the right child.
//
child(1)->codeGen(generator);
// The result of the Block is the result of the right child. Set
// the src attribute for the convert (added below) to be the right child
// The dst attribute has already been set in genItemExpr().
//
attr[1] = generator->getMapInfo
(child(1)->castToItemExpr()->getValueId())->getAttr();
// Allocate a convert clause to move the result from child(1) to the
// result of this node. This move is necessary so that future
// side-effects of the result of child(1) -- if it is a local variable,
// for instance -- will not change the result of the Block.
//
ex_conv_clause * convClause =
new(generator->getSpace()) ex_conv_clause
(getOperatorType(), attr, space);
generator->getExpGenerator()->linkClause(this, convClause);
return 0;
}