DLX / Ruby Dynamic Loader eXtended

The Elegant Interface Between Ruby & C

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2Types

To interface Ruby and C it is necessary to have a ruby object for each variable that may exist in C. C allows variables to have several different types, all of which are covered by DLX. You can divide these types into two groups of types: simple types and composite types.

This chapter will describe how to interface ruby to C with both groups of types using DLX. It will be concluded by discussing the notion of type closures, what they are and why they are important for DLX to operate so elegantly.

2.1simple types

2.1.1direct types

2.1.2pointer types

2.2composite types

2.2.1structs

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10.times {


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    puts( "HelloWorld" )


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}


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10.times {


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    puts( "HelloWorld" )


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}


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10.times {


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    puts( "HelloWorld" )


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}


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typedef struct Foo


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{


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    int a;


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    char* c;


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} Foo*;


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void* b = (struct Foo*)malloc( sizeof( struct Foo ) );


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10.times {


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    puts( "HelloWorld" )


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}


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10.times {


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    puts( "HelloWorld" )


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}


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2.2.2unions

		
		
2.2.3pointer types

			
structs

			
arrays

			
			


Warning, this feature is not implemented yet, however the description given here will be its intended interface.



		
	
2.3type closures


		
2.3.1Forward Declarations