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Annotation of parser3/src/types/pa_vmethod_frame.C, revision 1.29

1.2       paf         1: /**    @file
                      2:        Parser: method frame class.
                      3: 
1.24      moko        4:        Copyright (c) 2001-2015 Art. Lebedev Studio (http://www.artlebedev.com)
1.2       paf         5:        Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)\
                      6: */
                      7: 
                      8: #include "pa_vmethod_frame.h"
                      9: #include "pa_request.h"
                     10: 
1.29    ! moko       11: volatile const char * IDENT_PA_VMETHOD_FRAME_C="$Id: pa_vmethod_frame.C,v 1.28 2016/05/24 15:42:43 moko Exp $" IDENT_PA_VMETHOD_FRAME_H;
1.22      misha      12: 
1.14      misha      13: VVoid void_result; // unique value to be sure the result is changed
1.2       paf        14: 
                     15: // MethodParams: methods
                     16: 
1.7       paf        17: Value& MethodParams::get_processed(Value* value, const char* msg, int index, Request& r) {
1.29    ! moko       18:                return r.process(as_junction(value, msg, index), false /*do not intercept string*/);
1.2       paf        19: }
                     20: 
1.21      misha      21: HashStringValue* MethodParams::as_hash(int index, const char* name) {
                     22:        Value* value=get(index);
                     23:        if(value) {
                     24:                if(value->get_junction())
                     25:                        throw Exception(PARSER_RUNTIME,
                     26:                                0,
                     27:                                "%s param must not be code (parameter #%d)", name ? name : "options", 1+index);
                     28:                if(!value->is_defined()) // empty hash is not defined, but we don't need it anyway
                     29:                        return 0;
                     30:                if(HashStringValue* result=value->get_hash())
                     31:                        return result;
                     32:                if(value->is_string() && value->get_string()->trim().is_empty())
                     33:                        return 0;
                     34:        }
                     35:        throw Exception(PARSER_RUNTIME,
                     36:                0,
                     37:                "%s must have hash representation (parameter #%d)", name ? name : "options", 1+index);
                     38: }
                     39: 
                     40: Table* MethodParams::as_table(int index, const char* name) {
                     41:        Value* value=get(index);
                     42:        if(value) {
                     43:                if(value->get_junction())
                     44:                        throw Exception(PARSER_RUNTIME,
                     45:                                0,
                     46:                                "%s param must not be code (parameter #%d)", name ? name : "options", 1+index);
                     47:                if(Table* result=value->get_table())
                     48:                        return result;
                     49:        }
                     50:        throw Exception(PARSER_RUNTIME,
                     51:                0,
                     52:                "%s param must have table representation (parameter #%d)", name ? name : "options", 1+index);
1.23      moko       53: }
1.21      misha      54: 
1.2       paf        55: // VMethodFrame: methods
                     56: 
1.18      moko       57: VMethodFrame::VMethodFrame(const Method& amethod, VMethodFrame *acaller, Value& aself) : 
1.16      misha      58:        WContext(0 /* no parent, junctions can be reattached only up to VMethodFrame */),
1.4       paf        59:        fcaller(acaller),
1.12      misha      60:        my(0),
1.18      moko       61:        fself(aself),
                     62:        method(amethod) {
1.2       paf        63: 
1.18      moko       64:        put_element_impl=(method.all_vars_local)?&VMethodFrame::put_element_local:&VMethodFrame::put_element_global;
1.9       misha      65: 
1.18      moko       66:        if(!method.max_numbered_params_count){ // this method uses numbered params?
1.17      misha      67:                my=new HashString<Value*>;
1.2       paf        68: 
                     69:                if(method.locals_names) { // are there any local var names?
                     70:                        // remember them
                     71:                        // those are flags that fname is local == to be looked up in 'my'
                     72:                        for(Array_iterator<const String*> i(*method.locals_names); i.has_next(); ) {
                     73:                                // speedup: not checking for clash with "result" fname
                     74:                                const String& fname=*i.next();
1.20      moko       75:                                set_my_variable(fname, *VString::empty());
1.2       paf        76:                        }
                     77:                }
1.14      misha      78: #ifdef OPTIMIZE_RESULT
1.18      moko       79:                if(method.result_optimization!=Method::RO_USE_WCONTEXT)
1.14      misha      80: #endif
1.28      moko       81:                        set_my_variable(Symbols::RESULT_SYMBOL, void_result);
1.2       paf        82:        }
                     83: }
                     84: 
                     85: Value* VMethodFrame::get_result_variable() {
1.11      misha      86:        if(!my)
                     87:                return 0;
                     88: 
1.28      moko       89:        Value* result=my->get(Symbols::RESULT_SYMBOL);
1.14      misha      90:        return result!=&void_result?result:0;
1.2       paf        91: }