Annotation of parser3/src/types/pa_value.C, revision 1.11
1.1 paf 1: /** @file
2: Parser: Value class.
3:
1.10 paf 4: Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com)
1.1 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.2 paf 6: */
1.1 paf 7:
1.11 ! paf 8: static const char* IDENT_VALUE_C="$Date: 2003/07/24 11:31:25 $";
1.1 paf 9:
10: #include "pa_value.h"
11: #include "pa_vstateless_class.h"
1.4 paf 12: #include "pa_vmethod_frame.h"
1.10 paf 13: #include "pa_vdate.h"
14: #include "pa_vobject.h"
15:
16: // defines for globals
17:
18: #define NAME_NAME "name"
19:
20: // globals
21:
22: const String name_name(NAME_NAME);
23:
24: const String value_name(VALUE_NAME);
25: const String content_type_name(CONTENT_TYPE_NAME);
26:
27: // methods
28:
29: VObject* Value::set_derived(VObject* /*aderived*/) { return 0; }
30:
31: Junction* Value::get_junction() { return 0; }
32:
1.11 ! paf 33: Value* Value::base_object() { return bark("is '%s', it has no base object"); }
1.10 paf 34:
35: Value* Value::get_element(const String& /*aname*/, Value& /*aself*/, bool /*looking_up*/) {
1.11 ! paf 36: return bark("is '%s', it has no elements");
1.10 paf 37: }
38:
39:
40: VFile* Value::as_vfile(String::Language /*lang*/, const Request_charsets* /*charsets*/) {
1.11 ! paf 41: bark("is '%s', it does not have file value"); return 0;
1.10 paf 42: }
1.1 paf 43:
44: /// call this before invoking to ensure proper actual numbered params count
1.10 paf 45: void Method::check_actual_numbered_params(Value& self,
46: MethodParams* actual_numbered_params) const {
1.1 paf 47:
1.10 paf 48: int actual_count=actual_numbered_params?actual_numbered_params->count():0;
1.1 paf 49: if(actual_count<min_numbered_params_count) // not proper count? bark
50: throw Exception("parser.runtime",
1.10 paf 51: 0,
1.1 paf 52: "native method of %s (%s) accepts minimum %d parameter(s) (%d present)",
1.8 paf 53: self.get_class()->name_cstr(),
54: self.type(),
1.1 paf 55: min_numbered_params_count,
56: actual_count);
57:
58: }
1.4 paf 59:
1.10 paf 60: Junction::Junction(Value& aself,
61: const Method* amethod,
62: VMethodFrame* amethod_frame,
63: Value* arcontext,
64: WContext* awcontext,
65: ArrayOperation* acode): self(aself),
1.7 paf 66: method(amethod),
1.4 paf 67: method_frame(amethod_frame),
68: rcontext(arcontext),
69: wcontext(awcontext),
70: code(acode) {
1.5 paf 71: if(wcontext)
1.10 paf 72: wcontext->attach_junction(this);
1.4 paf 73: }
74:
1.5 paf 75: void Junction::reattach(WContext *new_wcontext) {
76: if(new_wcontext)
77: wcontext=new_wcontext;
78: else {
79: method_frame=0;
80: rcontext=0;
81: wcontext=0;
82: }
1.4 paf 83: }
84:
85: /*
86: void Junction::change_context(Junction *source) {
87: if(source) {
88: method_frame=source->method_frame;
89: rcontext=source->rcontext;
90: wcontext=source->wcontext;
91: } else {
92: method_frame=rcontext=0;
93: wcontext=0;
94: }
95: }
96: */
97:
1.10 paf 98: // attributed meaning
99:
100: static String::C date_attribute(const VDate& vdate) {
101: /// http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.3
102: const char month_names[12][4]={
103: "Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};
104: const char days[7][4]={
105: "Sun","Mon","Tue","Wed","Thu","Fri","Sat"};
106:
107: time_t when=vdate.get_time();
108: struct tm *tms=gmtime(&when);
109: if(!tms)
110: throw Exception(0,
111: 0,
112: "bad time in attribute value (seconds from epoch=%ld)", when);
113:
114: char *buf=new(PointerFreeGC) char[MAX_STRING];
115: return String::C(buf,
116: snprintf(buf, MAX_STRING, "%s, %.2d %s %.4d %.2d:%.2d:%.2d GMT",
117: days[tms->tm_wday],
118: tms->tm_mday,month_names[tms->tm_mon],tms->tm_year+1900,
119: tms->tm_hour,tms->tm_min,tms->tm_sec));
120: }
121: static void append_attribute_meaning(String& result,
122: Value& value, String::Language lang, bool forced) {
123: if(const String* string=value.get_string())
124: result.append(*string, lang, forced);
125: else
126: if(Value* vdate=value.as(VDATE_TYPE, false)) {
127: String::C attribute=date_attribute(static_cast<VDate&>(*vdate));
128:
129: result.append_help_length(attribute.str, attribute.length, String::L_CLEAN);
130: } else
131: throw Exception("parser.runtime",
132: &result,
133: "trying to append here neither string nor date (%s)",
134: value.type());
135: }
136: #ifndef DOXYGEN
137: struct Attributed_meaning_info {
138: String* header; // header line being constructed
139: String::Language lang; // language in which to append to that line
140: bool forced; // do they force that lang?
141: };
142: #endif
143: static void append_attribute_subattribute(HashStringValue::key_type akey,
144: HashStringValue::value_type avalue,
145: Attributed_meaning_info *info) {
146: if(akey==VALUE_NAME)
147: return;
148:
149: // ...; charset=windows1251
150: *info->header << "; ";
151: info->header->append(String(akey, String::L_TAINTED), info->lang, info->forced);
152: *info->header << "=";
153: append_attribute_meaning(*info->header, *avalue, info->lang, info->forced);
154: }
155: const String& attributed_meaning_to_string(Value& meaning,
156: String::Language lang, bool forced) {
157: String& result=*new String;
158: if(HashStringValue *hash=meaning.get_hash()) {
159: // $value(value) $subattribute(subattribute value)
160: if(Value* value=hash->get(value_name))
161: append_attribute_meaning(result, *value, lang, forced);
162:
163: Attributed_meaning_info attributed_meaning_info={&result, lang};
164: hash->for_each(append_attribute_subattribute, &attributed_meaning_info);
165: } else // result value
166: append_attribute_meaning(result, meaning, lang, forced);
167:
168: return result;
169: }
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