Annotation of parser3/src/classes/double.C, revision 1.41
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)
1.41 ! paf 5: Author: Alexander Petrosyan <paf@design.ru> (http://paf.design.ru)
1.20 paf 6:
1.41 ! paf 7: $Id: double.C,v 1.40 2001/10/19 12:43:29 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
1.39 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)
87: val=r.process(*default_code).as_double();
88: else {
1.40 parser 89: throw Exception(0, 0,
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: result.set_name(method_name);
96: r.write_assign_lang(result);
97: }
98:
1.22 paf 99: // constructor
100:
101: MDouble::MDouble(Pool& apool) : Methoded(apool) {
102: set_name(*NEW String(pool(), DOUBLE_CLASS_NAME));
1.30 parser 103:
1.14 paf 104:
1.9 paf 105: // ^double.int[]
1.22 paf 106: add_native_method("int", Method::CT_DYNAMIC, _int, 0, 0);
1.9 paf 107:
108: // ^double.double[]
1.22 paf 109: add_native_method("double", Method::CT_DYNAMIC, _double, 0, 0);
1.9 paf 110:
1.14 paf 111: // ^double.inc[]
1.9 paf 112: // ^double.inc[offset]
1.22 paf 113: add_native_method("inc", Method::CT_DYNAMIC, _inc, 0, 1);
1.14 paf 114: // ^double.dec[]
115: // ^double.dec[offset]
1.22 paf 116: add_native_method("dec", Method::CT_DYNAMIC, _dec, 0, 1);
1.14 paf 117: // ^double.mul[k]
1.22 paf 118: add_native_method("mul", Method::CT_DYNAMIC, _mul, 1, 1);
1.14 paf 119: // ^double.div[d]
1.22 paf 120: add_native_method("div", Method::CT_DYNAMIC, _div, 1, 1);
1.14 paf 121: // ^double.mod[offset]
1.22 paf 122: add_native_method("mod", Method::CT_DYNAMIC, _mod, 1, 1);
1.12 paf 123:
1.20 paf 124: // ^double.format{format}
1.22 paf 125: add_native_method("format", Method::CT_DYNAMIC, _string_format, 1, 1);
1.29 parser 126:
1.36 parser 127: // ^sql[query]
128: // ^sql[query][$.limit(1) $.offset(2) $.default(0.0)]
1.34 parser 129: add_native_method("sql", Method::CT_STATIC, _sql, 1, 2);
1.22 paf 130: }
131: // global variable
132:
133: Methoded *double_class;
134:
135: // creator
136:
137: Methoded *MDouble_create(Pool& pool) {
138: return double_class=new(pool) MDouble(pool);
1.1 paf 139: }
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