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[Lua] Added contract support for requiring that unsigned numbers are >=0

Browse source 
Rewrote much of Examples/Lua/embed3. 
Added a lot of to the Lua documentation.

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@11061 626c5289-ae23-0410-ae9c-e8d60b6d4f22
This commit is contained in:
Mark Gossage 2009-01-13 01:42:25 +00:00
commit e604e46b17
4 changed files with 309 additions and 27 deletions
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25
Lib/lua/luatypemaps.swg
View file

@ -20,11 +20,15 @@
to reflect the number of values returned (normally SWIG_arg++; will do)
*/
// numbers
%typemap(in,checkfn="lua_isnumber") int,short,long,
unsigned int,unsigned short,unsigned long,
signed char,unsigned char,
float,double
%typemap(in,checkfn="lua_isnumber") int, short, long,
signed char, float, double
%{$1 = ($type)lua_tonumber(L, $input);%}
// additional check for unsigned numbers, to not permit negative input
%typemap(in,checkfn="lua_isnumber") unsigned int,
unsigned short, unsigned long, unsigned char
%{SWIG_contract_assert((lua_tonumber(L,$input)>=0),"number must not be negative")
$1 = ($type)lua_tonumber(L, $input);%}
%typemap(out) int,short,long,
unsigned int,unsigned short,unsigned long,
@ -41,15 +45,20 @@
%typemap(in,checkfn="lua_isnumber") const int&($basetype temp)
%{ temp=($basetype)lua_tonumber(L,$input); $1=&temp;%}
%typemap(out) const int&
%typemap(in,checkfn="lua_isnumber") const unsigned int&($basetype temp)
%{SWIG_contract_assert((lua_tonumber(L,$input)>=0),"number must not be negative")
temp=($basetype)lua_tonumber(L,$input); $1=&temp;%}
%typemap(out) const int&, const unsigned int&
%{ lua_pushnumber(L, (lua_Number) *$1); SWIG_arg++;%}
// for the other numbers we can just use an apply statement to cover them
%apply const int & {const short&,const long&,
const unsigned int&,const unsigned short&,const unsigned long&,
const signed char&,const unsigned char&,
%apply const int & {const short&,const long&,const signed char&,
const float&,const double&};
%apply const unsigned int & {const unsigned short&,const unsigned long&,
const unsigned char&};
/* enums have to be handled slightly differently
VC++ .net will not allow a cast from lua_Number(double) to enum directly.
*/