xo-reader2/src/expression2/DDefineExpr.cpp

87 lines
2.4 KiB
C++

/** @file DDefineExpr.cpp
*
* @author Roland Conybeare, Jan 2026
**/
#include "DDefineExpr.hpp"
#include "detail/IPrintable_DVariable.hpp"
#include <xo/printable2/Printable.hpp>
#include <xo/facet/FacetRegistry.hpp>
#include <xo/indentlog/scope.hpp>
#include <xo/indentlog/print/cond.hpp>
namespace xo {
using xo::print::APrintable;
using xo::facet::FacetRegistry;
using xo::facet::typeseq;
namespace scm {
DDefineExpr::DDefineExpr(DVariable * lhs_var,
obj<AExpression> rhs)
: lhs_var_{lhs_var}, rhs_{rhs}
{}
DDefineExpr *
DDefineExpr::make(obj<AAllocator> mm,
const DUniqueString * lhs_name,
obj<AExpression> rhs_expr)
{
void * mem = mm.alloc(typeseq::id<DDefineExpr>(),
sizeof(DDefineExpr));
TypeRef rhs_tref;
if (rhs_expr)
rhs_tref = rhs_expr.typeref();
auto lhs_var = DVariable::make(mm,
lhs_name,
rhs_tref);
return new (mem) DDefineExpr(lhs_var, rhs_expr);
}
DDefineExpr *
DDefineExpr::make_empty(obj<AAllocator> mm)
{
return make(mm,
nullptr /*lhs_name*/,
obj<AExpression>() /*rhs_expr*/);
}
const DUniqueString *
DDefineExpr::name() const noexcept
{
return lhs_var_->name();
}
void
DDefineExpr::assign_lhs_name(const DUniqueString * name)
{
lhs_var_->assign_name(name);
}
void
DDefineExpr::assign_valuetype(TypeDescr td) noexcept
{
lhs_var_->assign_valuetype(td);
}
bool
DDefineExpr::pretty(const ppindentinfo & ppii) const
{
auto lhs = obj<APrintable,DVariable>(lhs_var_);
auto rhs = FacetRegistry::instance().try_variant<APrintable,
AExpression>(rhs_);
return ppii.pps()->pretty_struct
(ppii,
"DDefineExpr",
refrtag("lhs", lhs),
refrtag("rhs", cond(rhs_, rhs, "nullptr")));
}
} /*namespace scm*/
} /*namespace xo*/
/* end DDefineExpr.cpp */