// See the file "COPYING" in the main distribution directory for copyright.

#include "pac_attr.h"

#include "pac_expr.h"

bool Attr::DoTraverse(DataDepVisitor* visitor) {
    if ( expr_ && ! expr_->Traverse(visitor) )
        return false;
    return true;
}

bool Attr::RequiresAnalyzerContext() const { return (expr_ && expr_->RequiresAnalyzerContext()); }

void Attr::init() {
    expr_ = nullptr;
    seqend_ = nullptr;
    delete_expr_ = false;
}

Attr::Attr(AttrType type) : DataDepElement(DataDepElement::ATTR) {
    type_ = type;
    init();
}

Attr::Attr(AttrType type, Expr* expr) : DataDepElement(DataDepElement::ATTR) {
    type_ = type;
    init();
    expr_ = expr;
}

Attr::Attr(AttrType type, ExprList* exprlist) : DataDepElement(DataDepElement::ATTR) {
    type_ = type;
    init();
    expr_ = new Expr(exprlist);
    delete_expr_ = true;
}

Attr::Attr(AttrType type, SeqEnd* seqend) : DataDepElement(DataDepElement::ATTR) {
    type_ = type;
    init();
    seqend_ = seqend;
}

Attr::~Attr() {
    if ( delete_expr_ )
        delete expr_;
}

LetAttr::LetAttr(FieldList* letfields) : Attr(ATTR_LET) { letfields_ = letfields; }