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/*
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* (c) 2003 Mario de Sousa
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*
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* Offered to the public under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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* Public License for more details.
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*
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* This code is made available on the understanding that it will not be
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* used in safety-critical situations without a full and competent review.
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*/
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/*
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* An IEC 61131-3 IL and ST compiler.
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*
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* Based on the
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* FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)
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*
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*/
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/*
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* Function call parameter iterator.
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*
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* This is part of the 4th stage that generates
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* a c++ source program equivalent to the IL and ST
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* code.
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*/
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#include "../absyntax/visitor.hh"
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/* given a function_body_c, iterate through each
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* function in/out/inout parameter, returning the name
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* of each parameter...
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*/
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class function_call_iterator_c : public iterator_visitor_c {
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private:
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symbol_c *start_symbol;
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int next_fcall, fcall_count;
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symbol_c *current_fcall_name;
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symbol_c *current_finvocation;
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public:
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/* initialise the iterator object.
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* We must be given a reference to the function declaration
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* that will be analysed...
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*/
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function_call_iterator_c(symbol_c *symbol);
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/* Skip to the next function call. After object creation,
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* the object references _before_ the first, so
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* this function must be called once to get the object to
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* reference the first function call...
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*
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* Returns the function_invocation_c!
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*/
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symbol_c *next(void);
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/* Returns the name of the currently referenced function invocation */
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identifier_c *fname(void);
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private:
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/***************************************/
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/* B.3 - Language ST (Structured Text) */
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/***************************************/
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/***********************/
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/* B 3.1 - Expressions */
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/***********************/
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void *visit(function_invocation_c *symbol);
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/****************************************/
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/* B.2 - Language IL (Instruction List) */
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/****************************************/
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/***********************************/
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/* B 2.1 Instructions and Operands */
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/***********************************/
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/* | function_name [il_operand_list] */
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// SYM_REF2(il_function_call_c, function_name, il_operand_list)
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void *visit(il_function_call_c *symbol);
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/* | function_name '(' eol_list [il_param_list] ')' */
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// SYM_REF2(il_formal_funct_call_c, function_name, il_param_list)
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void *visit(il_formal_funct_call_c *symbol);
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}; // class function_call_iterator_c
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