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qemu: qapi: Use declarative approach for meta-type parsers in virQEMUQAPISchemaTraverse
Introduce an array of callbacks for given 'meta-type' of the QAPI schema structure rather than using code to select it. This will simplify extension for the other meta-types which are not handled yet. Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
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@ -164,12 +164,30 @@ virQEMUQAPISchemaTraverseCommand(virJSONValuePtr cur,
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}
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typedef int (*virQEMUQAPISchemaTraverseFunc)(virJSONValuePtr cur,
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struct virQEMUQAPISchemaTraverseContext *ctxt);
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struct virQEMUQAPISchemaTraverseMetaType {
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const char *metatype;
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virQEMUQAPISchemaTraverseFunc func;
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};
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static const struct virQEMUQAPISchemaTraverseMetaType traverseMetaType[] = {
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{ "object", virQEMUQAPISchemaTraverseObject },
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{ "array", virQEMUQAPISchemaTraverseArray },
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{ "command", virQEMUQAPISchemaTraverseCommand },
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{ "event", virQEMUQAPISchemaTraverseCommand },
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};
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static int
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virQEMUQAPISchemaTraverse(const char *baseName,
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struct virQEMUQAPISchemaTraverseContext *ctxt)
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{
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virJSONValuePtr cur;
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const char *metatype;
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size_t i;
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if (!(cur = virHashLookup(ctxt->schema, baseName)))
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return 0;
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@ -182,16 +200,9 @@ virQEMUQAPISchemaTraverse(const char *baseName,
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if (!(metatype = virJSONValueObjectGetString(cur, "meta-type")))
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return 0;
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if (STREQ(metatype, "array")) {
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return virQEMUQAPISchemaTraverseArray(cur, ctxt);
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} else if (STREQ(metatype, "object")) {
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return virQEMUQAPISchemaTraverseObject(cur, ctxt);
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} else if (STREQ(metatype, "command") ||
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STREQ(metatype, "event")) {
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return virQEMUQAPISchemaTraverseCommand(cur, ctxt);
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} else {
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/* alternates, basic types and enums can't be entered */
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return 0;
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for (i = 0; i < ARRAY_CARDINALITY(traverseMetaType); i++) {
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if (STREQ(metatype, traverseMetaType[i].metatype))
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return traverseMetaType[i].func(cur, ctxt);
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}
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return 0;
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