virtual void visit(AstArraySel* nodep, AstNUser*) {
if (!m_assignp) return;
if (nodep->user3()) return; // Prevent recursion on just created nodes
unsigned dim = explicitDimensions(nodep);
AstVarRef* refp = nodep->user1p()->castNode()->castVarRef();
pair<uint32_t,uint32_t> arrDim = refp->varp()->dtypep()->dimensions(false);
uint32_t implicit = (arrDim.second) - dim;
if (implicit > 0) {
AstArraySel* newp = insertImplicit(nodep->cloneTree(false), dim+1, implicit);
nodep->replaceWith(newp); nodep = newp;
nodep->user3(true);
}
int clones = countClones(nodep);
if (m_assignp->user2() > 0 && m_assignp->user2() != clones) {
m_assignp->v3error("Slices of arrays in assignments must have the same unpacked dimensions");
} else if (!m_assignp->user2()) {
if (m_extend && clones > 1 && !m_assignError) {
m_assignp->v3error("Unsupported: Assignment between unpacked arrays of different dimensions");
m_assignError = true;
}
if (clones > 1 && !refp->lvalue() && refp->varp() == m_lhsVarRefp->varp()
&& !m_assignp->castAssignDly() && !m_assignError) {
// LHS Var != RHS Var for a non-delayed assignment
m_assignp->v3error("Unsupported: Slices in a non-delayed assignment with the same Var on both sides");
m_assignError = true;
}
m_assignp->user2(clones);
}
}
virtual void visit(AstConst* nodep, AstNUser*) {
m_extend = true;
if (m_assignp && m_assignp->user2() > 1 && !m_assignError) {
m_assignp->v3error("Unsupported: Assignment between a constant and an array slice");
m_assignError = true;
}
}
virtual void visit(AstSel* nodep, AstNUser*) {
m_extend = true;
if (m_assignp && m_assignp->user2() > 1 && !m_assignError) {
m_assignp->v3error("Unsupported: Assignment between unpacked arrays of different dimensions");
m_assignError = true;
}
nodep->iterateChildren(*this);
}