map XML union to C union (and vice-versa)

[Matt Garman]

I'd like to create an XML schema that is akin to a C header file. For
example:

// C code (contrived example)
typedef double point_t[3];
typedef struct {
char n1[30];
char n2[50];
} name_t;

typedef union {
point_t pt;
name_t nt;
} my_union_t;

How can I express this in an XML schema? Essentially, I want to
restrict the type of *type* of data (as opposed to an enumeration, which
would restrict the *value* of data).

Thanks,
Matt

 

[Matt Garman]

How can I express this in an XML schema? Essentially, I want to
restrict the type of *type* of data (as opposed to an enumeration, which
would restrict the *value* of data).

Figured it out...

<xsd:choice>

http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/#element-choice
http://www.w3.org/TR/xmlschema-0/#element-choice

MG