generic-library/ChaiScript
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Add type generic comparison operations "eq", "gt", and "lt" and port the "contains" operation to use it

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This commit is contained in:
Jason Turner 2009-10-13 00:18:59 +00:00
parent 90f8b77171
commit 1fde71f3f4
1 changed files with 4 additions and 1 deletions
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5
include/chaiscript/language/chaiscript_prelude.hpp
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@ -12,6 +12,9 @@
#define CODE_STRING(x, y) #x ", " #y
#define chaiscript_prelude CODE_STRING(\
def lt(l, r) { if (call_exists(`<`, l, r)) { l < r } else { type_name(l) < type_name(r) } } \n\
def gt(l, r) { if (call_exists(`>`, l, r)) { l > r } else { type_name(l) > type_name(r) } } \n\
def eq(l, r) { if (call_exists(`==`, l, r)) { l == r } else { false } } \n\
def new(x) { eval(type_name(x))(); } \n\
def clone(x) : function_exists(type_name(x)) && call_exists(eval(type_name(x)), x) { eval(type_name(x))(x); } \n\
# to_string for Pair()\n\
@ -92,7 +95,7 @@ def back_inserter(container) { \n\
def contains(container, item) : call_exists(range, container) { \n\
var t_range = range(container); \n\
while (!t_range.empty()) { \n\
if (t_range.front() == item) { return true; } \n\
if ( eq(t_range.front(), item) ) { return true; } \n\
t_range.pop_front(); \n\
} \n\
return false; \n\