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Annotation of parser3/src/types/pa_method.h, revision 1.1.2.3

1.1.2.1   paf         1: /** @file
                      2:        Parser: Method class decl.
                      3: 
                      4:        Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com)
                      5:        Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
                      6: */
                      7: 
                      8: #ifndef PA_METHOD_H
                      9: #define PA_METHOD_H
                     10: 
1.1.2.3 ! paf        11: static const char* IDENT_METHOD_H="$Date: 2003/02/04 09:44:28 $";
1.1.2.1   paf        12: 
                     13: #include "pa_pool.h"
                     14: /*#include "pa_string.h"
                     15: #include "pa_array.h"
                     16: #include "pa_exception.h"
                     17: */
                     18: #include "pa_operation.h"
                     19: 
                     20: /**
                     21:        native code method
                     22:        params can be NULL when 
                     23:        method min&max params (see VStateless_class::add_native_method)
                     24:        counts are zero.        
                     25: */
                     26: typedef void (*NativeCodePtr)(Request& request, 
                     27:                                                                StringPtr method_name, 
                     28:                                                                MethodParams& params);
                     29: 
                     30: 
                     31: /** 
                     32:        class method.
                     33: 
                     34:        methods can have 
                     35:        - named or
                     36:        - numbered parameters
                     37: 
                     38:        methods can be
                     39:        - parser or 
                     40:        - native onces
                     41: 
                     42:        holds
                     43:        - parameter names or number limits
                     44:        - local names
                     45:        - code [parser or native]
                     46: */
                     47: class Method: public PA_Object {
                     48: public:
                     49: 
                     50:        /// allowed method call types
                     51:        enum Call_type {
                     52:                CT_ANY, ///< method can be called either statically or dynamically
                     53:                CT_STATIC, ///< method can be called only statically
                     54:                CT_DYNAMIC ///< method can be called only dynamically
                     55:        };
                     56:        
                     57:        /// name for error reporting
                     58:        StringPtr name;
                     59:        ///
                     60:        Call_type call_type;
                     61:        //@{
                     62:        /// @name either numbered params // for native-code methods = operators
                     63:        int min_numbered_params_count, max_numbered_params_count;
                     64:        //@}
                     65:        //@{
                     66:        /// @name or named params&locals // for parser-code methods
                     67:        ArrayStringPtr params_names;  ArrayStringPtr locals_names;
                     68:        //@}
                     69:        //@{
                     70:        /// @name the Code
                     71:        ArrayOperationPtr parser_code;/*OR*/NativeCodePtr native_code;
                     72:        //@}
                     73: 
                     74:        Method::Method(
                     75:                StringPtr aname,
                     76:                Call_type call_type,
                     77:                int amin_numbered_params_count, int amax_numbered_params_count,
                     78:                ArrayStringPtr aparams_names, ArrayStringPtr alocals_names,
                     79:                ArrayOperationPtr aparser_code, NativeCodePtr anative_code) : 
                     80: 
                     81:                name(aname),
                     82:                call_type(call_type),
                     83:                min_numbered_params_count(amin_numbered_params_count),
                     84:                max_numbered_params_count(amax_numbered_params_count),
                     85:                params_names(aparams_names), locals_names(alocals_names),
                     86:                parser_code(aparser_code), native_code(anative_code) {
                     87:        }
                     88: 
                     89:        /// call this before invoking to ensure proper actual numbered params count
                     90:        void check_actual_numbered_params(
                     91:                Value& self, StringPtr actual_name, MethodParams& actual_numbered_params) const;
                     92: };
                     93: 
                     94: ///    Auto-object used for temporarily substituting/removing elements
                     95: class Temp_value_element {
                     96:        Value& fwhere;
                     97:        StringPtr fname;
                     98:        ValuePtr saved;
                     99: public:
                    100:        Temp_value_element(Value& awhere, StringPtr aname, ValuePtr awhat) : 
                    101:                fwhere(awhere),
                    102:                fname(aname),
                    103:                saved(awhere.get_element(aname, awhere, false)) {
                    104:                fwhere.put_element(aname, awhat, false);
                    105:        }
                    106:        ~Temp_value_element() { 
                    107:                fwhere.put_element(fname, saved, false);
                    108:        }
                    109: };
                    110: 
                    111: 
                    112: #endif