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019a818e0dbf9c63647fa1c4'>^
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//: Support literal non-integers.
//: '3.14159:literal' is ugly, so we'll just say '3.14159' for non-integers.
:(scenarios load)
:(scenario noninteger_literal)
recipe main [
1:number <- copy 3.14159
]
+parse: ingredient: {name: "3.14159", properties: ["3.14159": "literal-number"]}
:(after "reagent::reagent(string s)")
if (is_noninteger(s)) {
name = s;
types.push_back(0);
properties.push_back(pair<string, vector<string> >(name, vector<string>()));
properties.back().second.push_back("literal-number");
set_value(to_double(s));
return;
}
:(code)
bool is_noninteger(const string& s) {
return s.find_first_not_of("0123456789-.") == string::npos
&& s.find('.') != string::npos;
}
double to_double(string n) {
char* end = NULL;
// safe because string.c_str() is guaranteed to be null-terminated
double result = strtod(n.c_str(), &end);
assert(*end == '\0');
return result;
}
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