Annotation of parser3/src/classes/double.C, revision 1.53.2.1
1.20 paf 1: /** @file
2: Parser: @b double parser class.
3:
1.53.2.1! paf 4: Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com)
1.43 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.48 paf 6: */
1.20 paf 7:
1.53.2.1! paf 8: static const char* IDENT_DOUBLE_C="$Date: 2003/01/21 15:51:06 $";
1.1 paf 9:
1.24 paf 10: #include "classes.h"
1.1 paf 11: #include "pa_request.h"
12: #include "pa_vdouble.h"
13: #include "pa_vint.h"
14:
1.22 paf 15: // externs
1.1 paf 16:
1.22 paf 17: void _string_format(Request& r, const String& method_name, MethodParams *);
18:
19: // class
20:
21: class MDouble : public Methoded {
22: public:
23: MDouble(Pool& pool);
1.26 paf 24: public: // Methoded
1.30 parser 25: bool used_directly() { return true; }
1.22 paf 26: };
1.1 paf 27:
28: // methods
29:
1.45 paf 30: static void _int(Request& r, const String& method_name, MethodParams *params) {
1.1 paf 31: Pool& pool=r.pool();
1.52 paf 32: // just checking (default) syntax validity, never really using it here, just for string.int compatibility
33: if(params->size()>0)
34: params->as_junction(0, "default must be int");
1.45 paf 35:
1.51 paf 36: VDouble *vdouble=static_cast<VDouble *>(r.get_self());
1.28 parser 37: Value& result=*new(pool) VInt(pool, vdouble->as_int());
1.27 paf 38: r.write_no_lang(result);
1.1 paf 39: }
40:
1.45 paf 41: static void _double(Request& r, const String& method_name, MethodParams *params) {
1.1 paf 42: Pool& pool=r.pool();
1.52 paf 43: // just checking (default) syntax validity, never really using it here, just for string.doube compatibility
44: if(params->size()>0)
45: params->as_junction(0, "default must be double");
1.45 paf 46:
1.51 paf 47: VDouble *vdouble=static_cast<VDouble *>(r.get_self());
1.27 paf 48: Value& result=*new(pool) VDouble(pool, vdouble->as_double());
49: r.write_no_lang(result);
1.1 paf 50: }
51:
1.14 paf 52: typedef void (*vdouble_op_func_ptr)(VDouble& vdouble, double param);
53:
54: static void __inc(VDouble& vdouble, double param) { vdouble.inc(param); }
55: static void __dec(VDouble& vdouble, double param) { vdouble.inc(-param); }
56: static void __mul(VDouble& vdouble, double param) { vdouble.mul(param); }
57: static void __div(VDouble& vdouble, double param) { vdouble.div(param); }
58: static void __mod(VDouble& vdouble, double param) { vdouble.mod((int)param); }
59:
1.21 paf 60: static void vdouble_op(Request& r, MethodParams *params,
1.14 paf 61: vdouble_op_func_ptr func) {
1.51 paf 62: VDouble *vdouble=static_cast<VDouble *>(r.get_self());
1.14 paf 63: double param=params->size()?
1.38 parser 64: params->as_double(0, "param must be double", r):1/*used in inc/dec*/;
1.14 paf 65: (*func)(*vdouble, param);
1.1 paf 66: }
67:
1.21 paf 68: static void _inc(Request& r, const String&, MethodParams *params) { vdouble_op(r, params, &__inc); }
69: static void _dec(Request& r, const String&, MethodParams *params) { vdouble_op(r, params, &__dec); }
70: static void _mul(Request& r, const String&, MethodParams *params) { vdouble_op(r, params, &__mul); }
71: static void _div(Request& r, const String&, MethodParams *params) { vdouble_op(r, params, &__div); }
72: static void _mod(Request& r, const String&, MethodParams *params) { vdouble_op(r, params, &__mod); }
1.16 paf 73:
1.29 parser 74: // from string.C
75: extern
1.39 parser 76: const String* sql_result_string(Request& r, const String& method_name, MethodParams *params,
77: Hash *& options, Value *& default_code);
1.29 parser 78:
79: static void _sql(Request& r, const String& method_name, MethodParams *params) {
80: Pool& pool=r.pool();
81:
1.35 parser 82: double val;
1.36 parser 83: Hash *options;
1.39 parser 84: Value *default_code;
85: if(const String *string=sql_result_string(r, method_name, params, options, default_code))
1.35 parser 86: val=string->as_double();
87: else
1.39 parser 88: if(default_code)
1.46 paf 89: val=r.process_to_value(*default_code).as_double();
1.39 parser 90: else {
1.44 paf 91: throw Exception("parser.runtime",
1.35 parser 92: &method_name,
1.39 parser 93: "produced no result, but no default option specified");
1.35 parser 94: val=0; //calm, compiler
95: }
1.29 parser 96: VDouble& result=*new(pool) VDouble(pool, val);
1.50 paf 97: r.write_no_lang(result);
1.29 parser 98: }
99:
1.22 paf 100: // constructor
101:
1.47 paf 102: MDouble::MDouble(Pool& apool) : Methoded(apool, "double") {
1.9 paf 103: // ^double.int[]
1.45 paf 104: add_native_method("int", Method::CT_DYNAMIC, _int, 0, 1);
1.9 paf 105:
106: // ^double.double[]
1.45 paf 107: add_native_method("double", Method::CT_DYNAMIC, _double, 0, 1);
1.9 paf 108:
1.14 paf 109: // ^double.inc[]
1.9 paf 110: // ^double.inc[offset]
1.22 paf 111: add_native_method("inc", Method::CT_DYNAMIC, _inc, 0, 1);
1.14 paf 112: // ^double.dec[]
113: // ^double.dec[offset]
1.22 paf 114: add_native_method("dec", Method::CT_DYNAMIC, _dec, 0, 1);
1.14 paf 115: // ^double.mul[k]
1.22 paf 116: add_native_method("mul", Method::CT_DYNAMIC, _mul, 1, 1);
1.14 paf 117: // ^double.div[d]
1.22 paf 118: add_native_method("div", Method::CT_DYNAMIC, _div, 1, 1);
1.14 paf 119: // ^double.mod[offset]
1.22 paf 120: add_native_method("mod", Method::CT_DYNAMIC, _mod, 1, 1);
1.12 paf 121:
1.20 paf 122: // ^double.format{format}
1.22 paf 123: add_native_method("format", Method::CT_DYNAMIC, _string_format, 1, 1);
1.29 parser 124:
1.36 parser 125: // ^sql[query]
126: // ^sql[query][$.limit(1) $.offset(2) $.default(0.0)]
1.34 parser 127: add_native_method("sql", Method::CT_STATIC, _sql, 1, 2);
1.22 paf 128: }
129: // global variable
130:
131: Methoded *double_class;
132:
133: // creator
134:
135: Methoded *MDouble_create(Pool& pool) {
136: return double_class=new(pool) MDouble(pool);
1.1 paf 137: }
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