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qapi: Better error messages for duplicated expressions The previous commit demonstrated that the generator overlooked duplicate expressions: - a complex type or command reusing a built-in type name - redeclaration of a type name, whether by the same or different metatype - redeclaration of a command or event - collision of a type with implicit 'Kind' enum for a union - collision with an implicit MAX enum constant Since the c_type() function in the generator treats all names as being in the same namespace, this patch adds a global array to track all known names and their source, to prevent collisions before it can cause further problems. While valid .json files won't trigger any of these cases, we might as well be nicer to developers that make a typo while trying to add new QAPI code. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>

2015-05-04 23:05:17 +08:00

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