Annotation of parser3/src/classes/double.C, revision 1.53.2.8
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:
1.53.2.8! paf 8: static const char* IDENT_DOUBLE_C="$Date: 2003/02/20 14:53:32 $";
1.1 paf 9:
1.24 paf 10: #include "classes.h"
1.53.2.3 paf 11: #include "pa_vmethod_frame.h"
12:
1.1 paf 13: #include "pa_request.h"
14: #include "pa_vdouble.h"
15: #include "pa_vint.h"
16:
1.22 paf 17: // externs
1.1 paf 18:
1.53.2.7 paf 19: void _string_format(Request& r, StringPtr method_name, MethodParams* /*params*/);
1.22 paf 20:
21: // class
22:
1.53.2.6 paf 23: class MDouble: public Methoded {
1.22 paf 24: public:
1.53.2.4 paf 25: MDouble();
1.26 paf 26: public: // Methoded
1.30 parser 27: bool used_directly() { return true; }
1.22 paf 28: };
1.1 paf 29:
1.53.2.4 paf 30: // global variable
31:
1.53.2.8! paf 32: DECLARE_CLASS_VAR(double, new MDouble, 0);
1.53.2.4 paf 33:
1.1 paf 34: // methods
35:
1.53.2.7 paf 36: static void _int(Request& r, StringPtr method_name, MethodParams* params) {
1.52 paf 37: // just checking (default) syntax validity, never really using it here, just for string.int compatibility
1.53.2.7 paf 38: if(params->count()>0)
39: params->as_junction(0, "default must be int");
1.45 paf 40:
1.53.2.4 paf 41: VDouble& vdouble=*static_cast<VDouble *>(r.get_self().get());
42: r.write_no_lang(ValuePtr(new VInt(vdouble.as_int())));
1.1 paf 43: }
44:
1.53.2.7 paf 45: static void _double(Request& r, StringPtr method_name, MethodParams* params) {
1.52 paf 46: // just checking (default) syntax validity, never really using it here, just for string.doube compatibility
1.53.2.7 paf 47: if(params->count()>0)
48: params->as_junction(0, "default must be double");
1.45 paf 49:
1.53.2.4 paf 50: VDouble& vdouble=*static_cast<VDouble *>(r.get_self().get());
51: r.write_no_lang(ValuePtr(new VDouble(vdouble.as_double())));
1.1 paf 52: }
53:
1.14 paf 54: typedef void (*vdouble_op_func_ptr)(VDouble& vdouble, double param);
55:
56: static void __inc(VDouble& vdouble, double param) { vdouble.inc(param); }
57: static void __dec(VDouble& vdouble, double param) { vdouble.inc(-param); }
58: static void __mul(VDouble& vdouble, double param) { vdouble.mul(param); }
59: static void __div(VDouble& vdouble, double param) { vdouble.div(param); }
60: static void __mod(VDouble& vdouble, double param) { vdouble.mod((int)param); }
61:
1.53.2.7 paf 62: static void vdouble_op(Request& r, MethodParams* params,
1.14 paf 63: vdouble_op_func_ptr func) {
1.53.2.4 paf 64: VDouble& vdouble=*static_cast<VDouble *>(r.get_self().get());
1.53.2.7 paf 65: double param=params->count()?
66: params->as_double(0, "param must be double", r):1/*used in inc/dec*/;
1.53.2.4 paf 67: (*func)(vdouble, param);
1.1 paf 68: }
69:
1.53.2.7 paf 70: static void _inc(Request& r, StringPtr /*method_name*/, MethodParams* params) { vdouble_op(r, params, &__inc); }
71: static void _dec(Request& r, StringPtr /*method_name*/, MethodParams* params) { vdouble_op(r, params, &__dec); }
72: static void _mul(Request& r, StringPtr /*method_name*/, MethodParams* params) { vdouble_op(r, params, &__mul); }
73: static void _div(Request& r, StringPtr /*method_name*/, MethodParams* params) { vdouble_op(r, params, &__div); }
74: static void _mod(Request& r, StringPtr /*method_name*/, MethodParams* params) { vdouble_op(r, params, &__mod); }
1.16 paf 75:
1.29 parser 76: // from string.C
77: extern
1.53.2.7 paf 78: StringPtr sql_result_string(Request& r, StringPtr method_name, MethodParams* params,
1.53.2.5 paf 79: HashStringValue*& options, ValuePtr& default_code);
1.29 parser 80:
1.53.2.7 paf 81: static void _sql(Request& r, StringPtr method_name, MethodParams* params) {
1.35 parser 82: double val;
1.53.2.5 paf 83: HashStringValue* options;
1.53.2.4 paf 84: ValuePtr default_code;
85: if(StringPtr 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)
1.53.2.4 paf 89: val=r.process_to_value(default_code)->as_double();
1.39 parser 90: else {
1.44 paf 91: throw Exception("parser.runtime",
1.53.2.4 paf 92: method_name,
1.39 parser 93: "produced no result, but no default option specified");
1.35 parser 94: val=0; //calm, compiler
95: }
1.53.2.4 paf 96: r.write_no_lang(ValuePtr(new VDouble(val)));
1.29 parser 97: }
98:
1.22 paf 99: // constructor
100:
1.53.2.4 paf 101: MDouble::MDouble(): Methoded("double") {
1.9 paf 102: // ^double.int[]
1.45 paf 103: add_native_method("int", Method::CT_DYNAMIC, _int, 0, 1);
1.9 paf 104:
105: // ^double.double[]
1.45 paf 106: add_native_method("double", Method::CT_DYNAMIC, _double, 0, 1);
1.9 paf 107:
1.14 paf 108: // ^double.inc[]
1.9 paf 109: // ^double.inc[offset]
1.22 paf 110: add_native_method("inc", Method::CT_DYNAMIC, _inc, 0, 1);
1.14 paf 111: // ^double.dec[]
112: // ^double.dec[offset]
1.22 paf 113: add_native_method("dec", Method::CT_DYNAMIC, _dec, 0, 1);
1.14 paf 114: // ^double.mul[k]
1.22 paf 115: add_native_method("mul", Method::CT_DYNAMIC, _mul, 1, 1);
1.14 paf 116: // ^double.div[d]
1.22 paf 117: add_native_method("div", Method::CT_DYNAMIC, _div, 1, 1);
1.14 paf 118: // ^double.mod[offset]
1.22 paf 119: add_native_method("mod", Method::CT_DYNAMIC, _mod, 1, 1);
1.12 paf 120:
1.20 paf 121: // ^double.format{format}
1.22 paf 122: add_native_method("format", Method::CT_DYNAMIC, _string_format, 1, 1);
1.29 parser 123:
1.36 parser 124: // ^sql[query]
125: // ^sql[query][$.limit(1) $.offset(2) $.default(0.0)]
1.34 parser 126: add_native_method("sql", Method::CT_STATIC, _sql, 1, 2);
1.1 paf 127: }
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