Annotation of parser3/src/types/pa_vmframe.h, revision 1.7
1.1 paf 1: /*
2: Parser
3: Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
1.2 paf 4: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.1 paf 5:
1.7 ! paf 6: $Id: pa_vmframe.h,v 1.6 2001/03/13 13:43:32 paf Exp $
1.1 paf 7: */
8:
9: #ifndef PA_VMFRAME_H
10: #define PA_VMFRAME_H
11:
12: #include "pa_wcontext.h"
13: #include "pa_vunknown.h"
14: #include "pa_vjunction.h"
15:
16: class VMethodFrame : public WContext {
17: public: // Value
18:
19: // all: for error reporting after fail(), etc
20: const char *type() const { return "method_frame"; }
21: // frame: my or self_transparent
22: Value *get_element(const String& name) {
23: if(my) {
24: Value *result=static_cast<Value *>(my->get(name));
25: if(result)
26: return result;
27: }
28: return fself->get_element(name);
29: }
30: // frame: my or self_transparent
31: void put_element(const String& name, Value *value){
32: if(!(my && my->put_replace(name, value)))
33: fself->put_element(name, value);
34: }
35:
36: // frame: self_transparent
1.6 paf 37: VStateless_class* get_class() { return fself->get_class(); }
1.1 paf 38:
39: // methodframe: self_transparent
40: VAliased *get_aliased() { return fself->get_aliased(); }
41:
42: public: // usage
43:
44: VMethodFrame(Pool& apool, const Junction& ajunction/*info: always method-junction*/) :
45: WContext(apool, 0 /* empty */, false /* not constructing */),
46:
47: junction(ajunction),
48: store_param_index(0),
49: my(0), fnumbered_params(0),
50: fself(0) {
51:
1.5 paf 52: const Method &method=*junction.method;
1.1 paf 53:
54: if(method.max_numbered_params_count) // are this method params numbered?
55: fnumbered_params=NEW Array(pool()); // create storage
56: else // named params
57: my=NEW Hash(pool()); // create storage
58:
59: if(method.locals_names) { // there are any local var names?
60: // remember them
61: // those are flags that name is local == to be looked up in 'my'
62: for(int i=0; i<method.locals_names->size(); i++) {
63: Value *value=NEW VUnknown(pool());
1.4 paf 64: const String& name=*method.locals_names->get_string(i);
1.1 paf 65: my->put(name, value);
66: value->set_name(name);
67: }
68: }
69: }
70:
71: void set_self(Value& aself) { fself=&aself; }
72:
1.3 paf 73: void store_param(const String& actual_method_name, Value *value) {
1.5 paf 74: const Method& method=*junction.method;
1.1 paf 75: int max_params=
76: method.max_numbered_params_count?method.max_numbered_params_count:
77: method.params_names?method.params_names->size():
78: 0;
79: if(store_param_index==max_params)
80: THROW(0,0,
1.3 paf 81: &actual_method_name,
82: "method of %s (%s) accepts maximum %d parameter(s)",
83: junction.self.name().cstr(),
1.1 paf 84: junction.self.type(),
85: max_params);
86:
87: if(method.max_numbered_params_count) { // are this method params numbered?
88: *fnumbered_params+=value;
89: } else { // named param
1.7 ! paf 90: const String& name=*method.params_names->get_string(store_param_index);
1.1 paf 91: my->put(name, value); // remember param
92: value->set_name(name); // set param's 'name'
93: }
1.7 ! paf 94: store_param_index++;
1.1 paf 95: }
96: void fill_unspecified_params() {
1.5 paf 97: const Method &method=*junction.method;
1.1 paf 98: if(method.params_names) // there are any named parameters might need filling?
99: for(; store_param_index<method.params_names->size(); store_param_index++) {
100: Value *value=NEW VUnknown(pool());
1.4 paf 101: const String& name=*method.params_names->get_string(store_param_index);
1.1 paf 102: my->put(name, value);
103: value->set_name(name);
104: }
105: }
106:
107: Array *numbered_params() { return fnumbered_params; }
108:
109: public:
110:
111: const Junction& junction;
112:
113: private:
114: int store_param_index;
115: Hash *my;/*OR*/Array *fnumbered_params;
116: Value *fself;
117:
118: };
119:
120: #endif
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