Annotation of parser3/src/include/pa_value.h, revision 1.43
1.1 paf 1: /*
1.43 ! paf 2: $Id: pa_value.h,v 1.42 2001/03/07 13:55:45 paf Exp $
1.1 paf 3: */
4:
5: /*
6: data core
7: */
8:
9: #ifndef PA_VALUE_H
10: #define PA_VALUE_H
11:
1.9 paf 12: #include "pa_pool.h"
1.1 paf 13: #include "pa_string.h"
1.9 paf 14: #include "pa_array.h"
1.1 paf 15:
1.27 paf 16: #define NAME_NAME "NAME"
17:
1.9 paf 18: class Value;
19: class VClass;
20: class Junction;
21: class WContext;
1.33 paf 22: class VAliased;
1.43 ! paf 23: class Request;
! 24:
! 25: typedef void (*Native_code_ptr)(Request& request);
1.9 paf 26:
27: class Method : public Pooled {
1.1 paf 28: public:
1.11 paf 29: const String& name;
1.43 ! paf 30: Array *params_names;
! 31: Array *locals_names;
! 32: const Array *parser_code;/*OR*/Native_code_ptr native_code;
1.9 paf 33:
34: Method(
35: Pool& apool,
1.11 paf 36: const String& aname,
1.43 ! paf 37: Array *aparams_names,
! 38: Array *alocals_names,
! 39: const Array *aparser_code, Native_code_ptr anative_code) :
1.19 paf 40:
1.9 paf 41: Pooled(apool),
42: name(aname),
1.11 paf 43: params_names(aparams_names),
44: locals_names(alocals_names),
1.43 ! paf 45: parser_code(aparser_code), native_code(anative_code) {
1.9 paf 46: }
1.1 paf 47: };
48:
1.21 paf 49: class Junction : public Pooled {
1.2 paf 50: public:
51:
1.20 paf 52: Junction(Pool& apool,
1.34 paf 53: Value& aself,
1.33 paf 54: VClass *avclass, Method *amethod,
1.20 paf 55: Value *aroot,
56: Value *arcontext,
1.24 paf 57: WContext *awcontext,
1.23 paf 58: const Array *acode) : Pooled(apool),
1.20 paf 59:
1.24 paf 60: self(aself),
1.33 paf 61: vclass(avclass), method(amethod),
1.20 paf 62: root(aroot),
63: rcontext(arcontext),
1.24 paf 64: wcontext(awcontext),
1.20 paf 65: code(acode) {
66: }
67:
1.43 ! paf 68: // always present
1.34 paf 69: Value& self;
1.43 ! paf 70: // either these // so called 'method-junction'
1.33 paf 71: VClass *vclass; Method *method;
1.43 ! paf 72: // or these are present // so called 'code-junction'
1.21 paf 73: Value *root;
74: Value *rcontext;
1.24 paf 75: WContext *wcontext;
1.23 paf 76: const Array *code;
1.8 paf 77: };
78:
1.9 paf 79: class Value : public Pooled {
1.17 paf 80: public: // Value
1.9 paf 81:
82: // all: for error reporting after fail(), etc
1.13 paf 83: virtual const char *type() const =0;
1.43 ! paf 84: String& name() const { return *fname; }
1.9 paf 85:
1.40 paf 86: // unknown: false
87: // others: true
88: virtual bool get_defined() { return true; }
89:
1.13 paf 90: // string: value
1.16 paf 91: // unknown: ""
1.38 paf 92: // double: value
1.16 paf 93: // others: 0
1.13 paf 94: virtual String *get_string() { return 0; }
1.9 paf 95:
1.13 paf 96: // string: value
1.37 paf 97: // double: value
1.39 paf 98: // bool: value
1.37 paf 99: virtual double get_double() { failed("getting numerical value of '%s'"); return 0; }
1.39 paf 100:
101: // unknown: false
102: // bool: value
103: // double: 0 or !0
104: // string: empty or not
1.40 paf 105: // hash: size!=0
106: // TODO table: count!=0
107: // others: true
1.39 paf 108: virtual bool get_bool() { return true; }
1.1 paf 109:
1.9 paf 110: // junction: auto_calc,root,self,rcontext,wcontext, code
1.23 paf 111: virtual Junction *get_junction() { return 0; }
1.8 paf 112:
1.1 paf 113: // hash: (key)=value
1.2 paf 114: // object_class: (field)=STATIC.value;(STATIC)=hash;(method)=method_ref with self=object_class
1.29 paf 115: // object_instance: (field)=value;(CLASS)=vclass;(method)=method_ref
1.7 paf 116: // operator_class: (field)=value - static values only
1.24 paf 117: // codeframe: wcontext_transparent
1.30 paf 118: // methodframe: my or self_transparent
1.42 paf 119: virtual Value *get_element(const String& name) { failed("type is '%s', can not get element from it"); return 0; }
1.13 paf 120:
1.15 paf 121: // hash: (key)=value
1.9 paf 122: // object_class, operator_class: (field)=value - static values only
1.26 paf 123: // object_instance: (field)=value
1.24 paf 124: // codeframe: wcontext_transparent
1.30 paf 125: // methodframe: my or self_transparent
1.29 paf 126: virtual void put_element(const String& name, Value *value) { failed("type is '%s', can not put element to it"); }
1.5 paf 127:
128: // object_class, object_instance: object_class
1.32 paf 129: // wcontext: none yet | transparent
1.9 paf 130: virtual VClass *get_class() { return 0; }
1.34 paf 131:
132: // valiased: this
133: // wcontext: transparent
1.35 paf 134: // methodframe: self_transparent
1.36 paf 135: virtual VAliased *get_aliased() { return 0; }
1.9 paf 136:
1.17 paf 137: public: // usage
138:
1.28 paf 139: Value(Pool& apool) : Pooled(apool), fname(new(apool) String(apool)) {
140: fname->APPEND_CONST("unnamed");
141: }
1.17 paf 142:
1.27 paf 143: void set_name(String& aname) { fname=&aname; }
1.18 paf 144:
145: String& as_string() {
1.17 paf 146: String *result=get_string();
147: if(!result)
1.25 paf 148: failed("getting string of '%s'");
1.17 paf 149: return *result;
150: }
1.9 paf 151:
1.18 paf 152: private:
153:
1.27 paf 154: String *fname;
1.18 paf 155:
1.9 paf 156: private:
1.6 paf 157:
1.18 paf 158: void failed(char *action);
1.1 paf 159: };
160:
161: #endif
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