Annotation of parser3/src/classes/double.C, revision 1.45
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)
1.20 paf 6:
1.45 ! paf 7: $Id: double.C,v 1.44 2002/03/27 15:30:33 paf 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:
1.45 ! paf 34: static void _int(Request& r, const String& method_name, MethodParams *params) {
1.1 paf 35: Pool& pool=r.pool();
1.45 ! paf 36: Value *default_code=params->size()>0?
! 37: default_code=¶ms->as_junction(0, "default must be int"):0; // (default)
! 38:
1.1 paf 39: VDouble *vdouble=static_cast<VDouble *>(r.self);
1.28 parser 40: Value& result=*new(pool) VInt(pool, vdouble->as_int());
1.27 paf 41: result.set_name(method_name);
42: r.write_no_lang(result);
1.1 paf 43: }
44:
1.45 ! paf 45: static void _double(Request& r, const String& method_name, MethodParams *params) {
1.1 paf 46: Pool& pool=r.pool();
1.45 ! paf 47: Value *default_code=params->size()>0?
! 48: default_code=¶ms->as_junction(0, "default must be double"):0; // (default)
! 49:
1.1 paf 50: VDouble *vdouble=static_cast<VDouble *>(r.self);
1.27 paf 51: Value& result=*new(pool) VDouble(pool, vdouble->as_double());
52: result.set_name(method_name);
53: r.write_no_lang(result);
1.1 paf 54: }
55:
1.14 paf 56: typedef void (*vdouble_op_func_ptr)(VDouble& vdouble, double param);
57:
58: static void __inc(VDouble& vdouble, double param) { vdouble.inc(param); }
59: static void __dec(VDouble& vdouble, double param) { vdouble.inc(-param); }
60: static void __mul(VDouble& vdouble, double param) { vdouble.mul(param); }
61: static void __div(VDouble& vdouble, double param) { vdouble.div(param); }
62: static void __mod(VDouble& vdouble, double param) { vdouble.mod((int)param); }
63:
1.21 paf 64: static void vdouble_op(Request& r, MethodParams *params,
1.14 paf 65: vdouble_op_func_ptr func) {
1.1 paf 66: VDouble *vdouble=static_cast<VDouble *>(r.self);
1.14 paf 67: double param=params->size()?
1.38 parser 68: params->as_double(0, "param must be double", r):1/*used in inc/dec*/;
1.14 paf 69: (*func)(*vdouble, param);
1.1 paf 70: }
71:
1.21 paf 72: static void _inc(Request& r, const String&, MethodParams *params) { vdouble_op(r, params, &__inc); }
73: static void _dec(Request& r, const String&, MethodParams *params) { vdouble_op(r, params, &__dec); }
74: static void _mul(Request& r, const String&, MethodParams *params) { vdouble_op(r, params, &__mul); }
75: static void _div(Request& r, const String&, MethodParams *params) { vdouble_op(r, params, &__div); }
76: static void _mod(Request& r, const String&, MethodParams *params) { vdouble_op(r, params, &__mod); }
1.16 paf 77:
1.29 parser 78: // from string.C
79: extern
1.39 parser 80: const String* sql_result_string(Request& r, const String& method_name, MethodParams *params,
81: Hash *& options, Value *& default_code);
1.29 parser 82:
83: static void _sql(Request& r, const String& method_name, MethodParams *params) {
84: Pool& pool=r.pool();
85:
1.35 parser 86: double val;
1.36 parser 87: Hash *options;
1.39 parser 88: Value *default_code;
89: if(const String *string=sql_result_string(r, method_name, params, options, default_code))
1.35 parser 90: val=string->as_double();
91: else
1.39 parser 92: if(default_code)
93: val=r.process(*default_code).as_double();
94: else {
1.44 paf 95: throw Exception("parser.runtime",
1.35 parser 96: &method_name,
1.39 parser 97: "produced no result, but no default option specified");
1.35 parser 98: val=0; //calm, compiler
99: }
1.29 parser 100: VDouble& result=*new(pool) VDouble(pool, val);
101: result.set_name(method_name);
102: r.write_assign_lang(result);
103: }
104:
1.22 paf 105: // constructor
106:
107: MDouble::MDouble(Pool& apool) : Methoded(apool) {
108: set_name(*NEW String(pool(), DOUBLE_CLASS_NAME));
1.30 parser 109:
1.14 paf 110:
1.9 paf 111: // ^double.int[]
1.45 ! paf 112: add_native_method("int", Method::CT_DYNAMIC, _int, 0, 1);
1.9 paf 113:
114: // ^double.double[]
1.45 ! paf 115: add_native_method("double", Method::CT_DYNAMIC, _double, 0, 1);
1.9 paf 116:
1.14 paf 117: // ^double.inc[]
1.9 paf 118: // ^double.inc[offset]
1.22 paf 119: add_native_method("inc", Method::CT_DYNAMIC, _inc, 0, 1);
1.14 paf 120: // ^double.dec[]
121: // ^double.dec[offset]
1.22 paf 122: add_native_method("dec", Method::CT_DYNAMIC, _dec, 0, 1);
1.14 paf 123: // ^double.mul[k]
1.22 paf 124: add_native_method("mul", Method::CT_DYNAMIC, _mul, 1, 1);
1.14 paf 125: // ^double.div[d]
1.22 paf 126: add_native_method("div", Method::CT_DYNAMIC, _div, 1, 1);
1.14 paf 127: // ^double.mod[offset]
1.22 paf 128: add_native_method("mod", Method::CT_DYNAMIC, _mod, 1, 1);
1.12 paf 129:
1.20 paf 130: // ^double.format{format}
1.22 paf 131: add_native_method("format", Method::CT_DYNAMIC, _string_format, 1, 1);
1.29 parser 132:
1.36 parser 133: // ^sql[query]
134: // ^sql[query][$.limit(1) $.offset(2) $.default(0.0)]
1.34 parser 135: add_native_method("sql", Method::CT_STATIC, _sql, 1, 2);
1.22 paf 136: }
137: // global variable
138:
139: Methoded *double_class;
140:
141: // creator
142:
143: Methoded *MDouble_create(Pool& pool) {
144: return double_class=new(pool) MDouble(pool);
1.1 paf 145: }
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