Commit b2cd7dee authored by Paolo Bonzini's avatar Paolo Bonzini
Browse files

qom: add generic string parsing/printing 



Add generic property accessors that take a string and parse it
appropriately for the property type.  All the magic here is done
by the new string-based visitors.

Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 2d7799f2

include/qemu/object.h

+24 −0
Original line number Diff line number Diff line
@@ -729,6 +729,30 @@ int64_t object_property_get_int(Object *obj, const char *name, 
void object_property_set(Object *obj, struct Visitor *v, const char *name,

                         struct Error **errp);



/**

 * object_property_parse:

 * @obj: the object

 * @string: the string that will be used to parse the property value.

 * @name: the name of the property

 * @errp: returns an error if this function fails

 *

 * Parses a string and writes the result into a property of an object.

 */

void object_property_parse(Object *obj, const char *string,

                           const char *name, struct Error **errp);



/**

 * object_property_print:

 * @obj: the object

 * @name: the name of the property

 * @errp: returns an error if this function fails

 *

 * Returns a string representation of the value of the property.  The

 * caller shall free the string.

 */

char *object_property_print(Object *obj, const char *name,

                            struct Error **errp);



/**

 * object_property_get_type:

 * @obj: the object

qom/object.c

+25 −0
Original line number Diff line number Diff line
@@ -13,6 +13,8 @@ 
#include "qemu/object.h"

#include "qemu-common.h"

#include "qapi/qapi-visit-core.h"

#include "qapi/string-input-visitor.h"

#include "qapi/string-output-visitor.h"



/* TODO: replace QObject with a simpler visitor to avoid a dependency

 * of the QOM core on QObject?  */
@@ -782,6 +784,29 @@ int64_t object_property_get_int(Object *obj, const char *name, 
    return retval;

}



void object_property_parse(Object *obj, const char *string,

                           const char *name, Error **errp)

{

    StringInputVisitor *mi;

    mi = string_input_visitor_new(string);

    object_property_set(obj, string_input_get_visitor(mi), name, errp);



    string_input_visitor_cleanup(mi);

}



char *object_property_print(Object *obj, const char *name,

                            Error **errp)

{

    StringOutputVisitor *mo;

    char *string;



    mo = string_output_visitor_new();

    object_property_get(obj, string_output_get_visitor(mo), name, NULL);

    string = string_output_get_string(mo);

    string_output_visitor_cleanup(mo);

    return string;

}



const char *object_property_get_type(Object *obj, const char *name, Error **errp)

{

    ObjectProperty *prop = object_property_find(obj, name);