Annotation of parser3/src/classes/double.C, revision 1.38
1.20 paf 1: /** @file
2: Parser: @b double parser class.
3:
1.4 paf 4: Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
1.37 parser 5: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.20 paf 6:
1.38 ! parser 7: $Id: double.C,v 1.37 2001/09/26 10:32:25 parser Exp $
1.1 paf 8: */
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: // defines
20:
21: #define DOUBLE_CLASS_NAME "double"
22:
23: // class
24:
25: class MDouble : public Methoded {
26: public:
27: MDouble(Pool& pool);
1.26 paf 28: public: // Methoded
1.30 parser 29: bool used_directly() { return true; }
1.22 paf 30: };
1.1 paf 31:
32: // methods
33:
1.27 paf 34: static void _int(Request& r, const String& method_name, MethodParams *) {
1.1 paf 35: Pool& pool=r.pool();
36: VDouble *vdouble=static_cast<VDouble *>(r.self);
1.28 parser 37: Value& result=*new(pool) VInt(pool, vdouble->as_int());
1.27 paf 38: result.set_name(method_name);
39: r.write_no_lang(result);
1.1 paf 40: }
41:
1.27 paf 42: static void _double(Request& r, const String& method_name, MethodParams *) {
1.1 paf 43: Pool& pool=r.pool();
44: VDouble *vdouble=static_cast<VDouble *>(r.self);
1.27 paf 45: Value& result=*new(pool) VDouble(pool, vdouble->as_double());
46: result.set_name(method_name);
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
1.33 parser 74: const String* sql_result_string(Request& r, const String& method_name,
1.36 parser 75: MethodParams *params,
76: Hash *&options);
1.29 parser 77:
78: static void _sql(Request& r, const String& method_name, MethodParams *params) {
79: Pool& pool=r.pool();
80:
1.35 parser 81: double val;
1.36 parser 82: Hash *options;
83: if(const String *string=sql_result_string(r, method_name, params, options))
1.35 parser 84: val=string->as_double();
85: else
1.36 parser 86: if(options) {
87: if(Value *vdefault=(Value *)options->get(*sql_default_name))
88: val=r.process(*vdefault).as_double();
89: else {
90: PTHROW(0, 0,
91: &method_name,
92: "produced no result, but no default option specified");
93: val=0; //calm, compiler
94: }
95: } else {
1.35 parser 96: PTHROW(0, 0,
97: &method_name,
1.36 parser 98: "produced no result, but no options (no default) specified");
1.35 parser 99: val=0; //calm, compiler
100: }
1.29 parser 101: VDouble& result=*new(pool) VDouble(pool, val);
102: result.set_name(method_name);
103: r.write_assign_lang(result);
104: }
105:
1.22 paf 106: // constructor
107:
108: MDouble::MDouble(Pool& apool) : Methoded(apool) {
109: set_name(*NEW String(pool(), DOUBLE_CLASS_NAME));
1.30 parser 110:
1.14 paf 111:
1.9 paf 112: // ^double.int[]
1.22 paf 113: add_native_method("int", Method::CT_DYNAMIC, _int, 0, 0);
1.9 paf 114:
115: // ^double.double[]
1.22 paf 116: add_native_method("double", Method::CT_DYNAMIC, _double, 0, 0);
1.9 paf 117:
1.14 paf 118: // ^double.inc[]
1.9 paf 119: // ^double.inc[offset]
1.22 paf 120: add_native_method("inc", Method::CT_DYNAMIC, _inc, 0, 1);
1.14 paf 121: // ^double.dec[]
122: // ^double.dec[offset]
1.22 paf 123: add_native_method("dec", Method::CT_DYNAMIC, _dec, 0, 1);
1.14 paf 124: // ^double.mul[k]
1.22 paf 125: add_native_method("mul", Method::CT_DYNAMIC, _mul, 1, 1);
1.14 paf 126: // ^double.div[d]
1.22 paf 127: add_native_method("div", Method::CT_DYNAMIC, _div, 1, 1);
1.14 paf 128: // ^double.mod[offset]
1.22 paf 129: add_native_method("mod", Method::CT_DYNAMIC, _mod, 1, 1);
1.12 paf 130:
1.20 paf 131: // ^double.format{format}
1.22 paf 132: add_native_method("format", Method::CT_DYNAMIC, _string_format, 1, 1);
1.29 parser 133:
1.36 parser 134: // ^sql[query]
135: // ^sql[query][$.limit(1) $.offset(2) $.default(0.0)]
1.34 parser 136: add_native_method("sql", Method::CT_STATIC, _sql, 1, 2);
1.22 paf 137: }
138: // global variable
139:
140: Methoded *double_class;
141:
142: // creator
143:
144: Methoded *MDouble_create(Pool& pool) {
145: return double_class=new(pool) MDouble(pool);
1.1 paf 146: }
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