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Author:halw

Browse Source 
Date:2008-12-01T22:45:08.000000Z


git-svn-id: https://svn.eiffel.com/eiffel-org/trunk@112 abb3cda0-5349-4a8f-a601-0c33ac3a8c38
This commit is contained in:
halw
2008-12-01 22:45:08 +00:00
parent 7312cec21e
commit bba0936e07
11 changed files with 282 additions and 252 deletions
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68
documentation/current/solutions/other-languages/cecil/cecil-interface-overview.wiki
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@@ -19,12 +19,12 @@ Generally, you should use these types when implementing external C functions bou
{{sample|Calling C external `foo' from Eiffel, which takes a pointer and an eiffel object of type OBJECT as arguments and returns an INTEGER. }}
<div>
<code>
c_foo (ptr: POINTER; obj: OBJECT): INTEGER is
external
"C | %"your_file.h%""
alias
"foo"
end
c_foo (ptr: POINTER; obj: OBJECT): INTEGER
external
"C | %"your_file.h%""
alias
"foo"
end
</code>
@@ -46,12 +46,12 @@ int foo (void *arg1, char c, FILE *file)
</code>
</div><div>To match the signature, you must declare it in Eiffel as:
<code>
c_foo (arg1: POINTER; c: CHARACTER; file: POINTER): INTEGER is
external
"C (void *, char, FILE *) : int | %""your_file.h%""
alias
"foo"
end
c_foo (arg1: POINTER; c: CHARACTER; file: POINTER): INTEGER
external
"C (void *, char, FILE *) : int | %""your_file.h%""
alias
"foo"
end
</code>
</div>
Not doing this would generally produce warnings during the C compilation, and it could crash with some C compilers.
@@ -91,12 +91,12 @@ Use ''eif_access'' to pass an Eiffel object to an Eiffel routine or to return th
'''For example, in the following external:'''
<code>
c_foo (ptr: POINTER; obj: OBJECT): INTEGER is
external
"C | %""your_file.h%""
alias
"foo"
end
c_foo (ptr: POINTER; obj: OBJECT): INTEGER
external
"C | %""your_file.h%""
alias
"foo"
end
</code>
@@ -191,18 +191,18 @@ Called within a C external, the function ''eif_adopt'' creates a user protection
In Eiffel:
<div>
<code>
c_foo (ptr: POINTER; obj: OBJECT): INTEGER is
external
"C | %"your_file.h%""
alias
"foo"
end
c_display_and_release_obj is
external
"C | %"your_file.h%""
alias
"display_and_release_obj"
end
c_foo (ptr: POINTER; obj: OBJECT): INTEGER
external
"C | %"your_file.h%""
alias
"foo"
end
c_display_and_release_obj
external
"C | %"your_file.h%""
alias
"display_and_release_obj"
end
</code>
</div>
@@ -403,10 +403,10 @@ See also <eiffel>eif_access</eiffel>.
In Eiffel:
<code>
foo : STRING is
external
"C | %"a file.h%""
end
foo : STRING
external
"C | %"a file.h%""
end
</code>
In C: