Ejemplo n.º 1
0
void DeclarationBuilder::visitAliasStatement(Ast *node)
{
    Ast *right = new Ast(node->tree->r, node->context);
    QualifiedIdentifier id = QualifiedIdentifier(QString(right->tree->name));
    const RangeInRevision &range = editorFindRange(right, right);
    DeclarationPointer decl = getDeclaration(id, range, DUContextPointer(currentContext()));

    if (is_global_var(node->tree->l) && is_global_var(right->tree)) {
        DUChainWriteLocker wlock;
        // If the global variable on the right is not declared, declare it as nil
        if (!decl) {
            AbstractType::Ptr type = topContext()->findDeclarations(QualifiedIdentifier("NilClass")).first()->abstractType();
            VariableDeclaration *vDecl = openDefinition<VariableDeclaration>(id, range);
            vDecl->setVariableKind(right->tree);
            vDecl->setKind(Declaration::Instance);
            vDecl->setType(type);
            eventuallyAssignInternalContext();
            DeclarationBuilderBase::closeDeclaration();
            decl = vDecl;
        }
        node->tree = node->tree->l;
        QualifiedIdentifier aid = getIdentifier(node);
        AbstractType::Ptr type = decl->abstractType();
        declareVariable(aid, type, node);
    } else if (decl && decl->isFunctionDeclaration()) {
        DUChainWriteLocker wlock;
        MethodDeclaration *md = dynamic_cast<MethodDeclaration *>(decl.data());
        node->tree = node->tree->l;
        const RangeInRevision & arange = editorFindRange(node, node);
        QualifiedIdentifier aid = getIdentifier(node);
        aliasMethodDeclaration(aid, arange, md);
    } else
        appendProblem(node->tree, i18n("undefined method `%1'", id.toString()));
}