Annotation of parser3/src/classes/double.C, revision 1.49
1.20 paf 1: /** @file
2: Parser: @b double parser class.
3:
1.42 paf 4: Copyright (c) 2001, 2002 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:
1.49 ! paf 8: static const char* IDENT_DOUBLE_C="$Date: double.C,v 1.48 2002/08/01 11:26:43 paf Exp $";
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();
1.45 paf 32: Value *default_code=params->size()>0?
33: default_code=¶ms->as_junction(0, "default must be int"):0; // (default)
34:
1.1 paf 35: VDouble *vdouble=static_cast<VDouble *>(r.self);
1.28 parser 36: Value& result=*new(pool) VInt(pool, vdouble->as_int());
1.27 paf 37: r.write_no_lang(result);
1.1 paf 38: }
39:
1.45 paf 40: static void _double(Request& r, const String& method_name, MethodParams *params) {
1.1 paf 41: Pool& pool=r.pool();
1.45 paf 42: Value *default_code=params->size()>0?
43: default_code=¶ms->as_junction(0, "default must be double"):0; // (default)
44:
1.1 paf 45: VDouble *vdouble=static_cast<VDouble *>(r.self);
1.27 paf 46: Value& result=*new(pool) VDouble(pool, vdouble->as_double());
47: r.write_no_lang(result);
1.1 paf 48: }
49:
1.14 paf 50: typedef void (*vdouble_op_func_ptr)(VDouble& vdouble, double param);
51:
52: static void __inc(VDouble& vdouble, double param) { vdouble.inc(param); }
53: static void __dec(VDouble& vdouble, double param) { vdouble.inc(-param); }
54: static void __mul(VDouble& vdouble, double param) { vdouble.mul(param); }
55: static void __div(VDouble& vdouble, double param) { vdouble.div(param); }
56: static void __mod(VDouble& vdouble, double param) { vdouble.mod((int)param); }
57:
1.21 paf 58: static void vdouble_op(Request& r, MethodParams *params,
1.14 paf 59: vdouble_op_func_ptr func) {
1.1 paf 60: VDouble *vdouble=static_cast<VDouble *>(r.self);
1.14 paf 61: double param=params->size()?
1.38 parser 62: params->as_double(0, "param must be double", r):1/*used in inc/dec*/;
1.14 paf 63: (*func)(*vdouble, param);
1.1 paf 64: }
65:
1.21 paf 66: static void _inc(Request& r, const String&, MethodParams *params) { vdouble_op(r, params, &__inc); }
67: static void _dec(Request& r, const String&, MethodParams *params) { vdouble_op(r, params, &__dec); }
68: static void _mul(Request& r, const String&, MethodParams *params) { vdouble_op(r, params, &__mul); }
69: static void _div(Request& r, const String&, MethodParams *params) { vdouble_op(r, params, &__div); }
70: static void _mod(Request& r, const String&, MethodParams *params) { vdouble_op(r, params, &__mod); }
1.16 paf 71:
1.29 parser 72: // from string.C
73: extern
1.39 parser 74: const String* sql_result_string(Request& r, const String& method_name, MethodParams *params,
75: Hash *& options, Value *& default_code);
1.29 parser 76:
77: static void _sql(Request& r, const String& method_name, MethodParams *params) {
78: Pool& pool=r.pool();
79:
1.35 parser 80: double val;
1.36 parser 81: Hash *options;
1.39 parser 82: Value *default_code;
83: if(const String *string=sql_result_string(r, method_name, params, options, default_code))
1.35 parser 84: val=string->as_double();
85: else
1.39 parser 86: if(default_code)
1.46 paf 87: val=r.process_to_value(*default_code).as_double();
1.39 parser 88: else {
1.44 paf 89: throw Exception("parser.runtime",
1.35 parser 90: &method_name,
1.39 parser 91: "produced no result, but no default option specified");
1.35 parser 92: val=0; //calm, compiler
93: }
1.29 parser 94: VDouble& result=*new(pool) VDouble(pool, val);
95: r.write_assign_lang(result);
96: }
97:
1.22 paf 98: // constructor
99:
1.47 paf 100: MDouble::MDouble(Pool& apool) : Methoded(apool, "double") {
1.9 paf 101: // ^double.int[]
1.45 paf 102: add_native_method("int", Method::CT_DYNAMIC, _int, 0, 1);
1.9 paf 103:
104: // ^double.double[]
1.45 paf 105: add_native_method("double", Method::CT_DYNAMIC, _double, 0, 1);
1.9 paf 106:
1.14 paf 107: // ^double.inc[]
1.9 paf 108: // ^double.inc[offset]
1.22 paf 109: add_native_method("inc", Method::CT_DYNAMIC, _inc, 0, 1);
1.14 paf 110: // ^double.dec[]
111: // ^double.dec[offset]
1.22 paf 112: add_native_method("dec", Method::CT_DYNAMIC, _dec, 0, 1);
1.14 paf 113: // ^double.mul[k]
1.22 paf 114: add_native_method("mul", Method::CT_DYNAMIC, _mul, 1, 1);
1.14 paf 115: // ^double.div[d]
1.22 paf 116: add_native_method("div", Method::CT_DYNAMIC, _div, 1, 1);
1.14 paf 117: // ^double.mod[offset]
1.22 paf 118: add_native_method("mod", Method::CT_DYNAMIC, _mod, 1, 1);
1.12 paf 119:
1.20 paf 120: // ^double.format{format}
1.22 paf 121: add_native_method("format", Method::CT_DYNAMIC, _string_format, 1, 1);
1.29 parser 122:
1.36 parser 123: // ^sql[query]
124: // ^sql[query][$.limit(1) $.offset(2) $.default(0.0)]
1.34 parser 125: add_native_method("sql", Method::CT_STATIC, _sql, 1, 2);
1.22 paf 126: }
127: // global variable
128:
129: Methoded *double_class;
130:
131: // creator
132:
133: Methoded *MDouble_create(Pool& pool) {
134: return double_class=new(pool) MDouble(pool);
1.1 paf 135: }
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