Method evalAndFoldString

src/ast/ast_const_folding.cpp:421–441

    }

    ExpressionPtr FoldingVisitor::evalAndFoldString ( Expression * expr ) {
        if ( expr->rtti_isStringConstant() ) return expr->clone();
        bool failed;
        vec4f value = eval(expr, failed);
        if ( !failed ) {
            auto b4ref = expr->type->ref;
            expr->type->ref = false;
            TypeInfo * pTypeInfo = helper.makeTypeInfo(nullptr,expr->type);
            expr->type->ref = b4ref;
            auto res = debug_value(value, pTypeInfo, PrintFlags::string_builder);
            auto sim = new ExprConstString(expr->at, res);
            sim->type = new TypeDecl(Type::tString);
            sim->constexpression = true;
            sim->foldedNonConst = !expr->type->constant;
            sim->at = encloseAt(expr);
            reportFolding();
            return sim;
        } else {
            return expr;
        }
    }

    ExpressionPtr FoldingVisitor::cloneWithType ( ExpressionPtr expr ) {
        auto rexpr = expr->clone();