Fixed __SET_EXTERNAL_FB declaration in accessor.h, invoked when accessing EXTERNAL_BLOCK.VARIABLE. Macro was invoking __SET_VAR with wrong parameter count. Fixed corresponding code generator for ST. Seems similar codegen for IL is also broken, but fix would affect other (unknown) behviours -> didn't touch it.
/*
* matiec - a compiler for the programming languages defined in IEC 61131-3
*
* Copyright (C) 2003-2011 Mario de Sousa (msousa@fe.up.pt)
* Copyright (C) 2007-2011 Laurent Bessard and Edouard Tisserant
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*
* This code is made available on the understanding that it will not be
* used in safety-critical situations without a full and competent review.
*/
/*
* An IEC 61131-3 compiler.
*
* Based on the
* FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)
*
*/
/*
* Function call parameter iterator.
* It will iterate through the non-formal parameters of a function call
* (i.e. function calls using the foo(<param1>, <param2>, ...) syntax).
* and/or search through the formal parameters of a function call
* (i.e. function calls using the foo(<name1> = <param1>, <name2> = <param2>, ...) syntax).
*
* Calls to function blocks and programs are also supported.
*
* Note that calls to next_nf() will only iterate through non-formal parameters,
* calls to next_f() will only iterate through formal parameters,
* and calls to search_f() will only serach through formal parameters.
*/
#include "../absyntax/visitor.hh"
class function_call_param_iterator_c : public null_visitor_c {
private:
void *search_list(list_c *list);
void *handle_parameter_assignment(symbol_c *variable_name, symbol_c *expression) ;
public:
/* start off at the first parameter once again... */
void reset(void);
/* initialise the iterator object.
* We must be given a reference to the function/program/function block call
* that will be analysed...
*/
function_call_param_iterator_c(symbol_c *f_call);
/* Skip to the next formal parameter. After object creation,
* the object references on parameter _before_ the first, so
* this function must be called once to get the object to
* reference the first parameter...
*
* Returns the paramater name to which a value is being passed!
* You can determine the value being passed by calling
* function_call_param_iterator_c::search_f()
*/
symbol_c *next_f(void);
/* Skip to the next non-formal parameter. After object creation,
* the object references on parameter _before_ the first, so
* this function must be called once to get the object to
* reference the first parameter...
*
* Returns whatever is being passed to the parameter!
*/
symbol_c *next_nf(void);
/* Search for the value passed to the parameter named <param_name>... */
symbol_c *search_f(symbol_c *param_name);
symbol_c *search_f(const char *param_name);
/* Returns the value being passed to the current parameter. */
symbol_c *get_current_value(void);
/* A type to specify how the current parameter was assigned.
* param_name := var -> assign_in
* param_name => var -> assign_out
* -> assign_none (used when handling non formal calls, when no assignment type is used)
*/
typedef enum {assign_in, assign_out, assign_none} assign_direction_t ;
/* Returns the assignment direction of the current parameter. */
assign_direction_t get_assign_direction(void);
private:
/* a pointer to the function call
* (or function block or program call!)
*/
symbol_c *f_call;
int iterate_f_next_param, iterate_nf_next_param, param_count;
identifier_c *search_param_name;
symbol_c *current_value;
assign_direction_t current_assign_direction;
/* Which operation of the class was called:
* - iterate to the next non-formal parameter.
* - iterate to the next formal parameter.
* - search a formal parameter,
*/
typedef enum {iterate_nf_op, iterate_f_op, search_f_op} operation_t;
operation_t current_operation;
private:
/********************************/
/* B 1.7 Configuration elements */
/********************************/
/*
CONFIGURATION configuration_name
optional_global_var_declarations
(resource_declaration_list | single_resource_declaration)
optional_access_declarations
optional_instance_specific_initializations
END_CONFIGURATION
*/
/*
SYM_REF6(configuration_declaration_c, configuration_name, global_var_declarations, resource_declarations, access_declarations, instance_specific_initializations, unused)
*/
/* helper symbol for configuration_declaration */
/*
SYM_LIST(resource_declaration_list_c)
*/
/*
RESOURCE resource_name ON resource_type_name
optional_global_var_declarations
single_resource_declaration
END_RESOURCE
*/
/*
SYM_REF4(resource_declaration_c, resource_name, resource_type_name, global_var_declarations, resource_declaration)
*/
/* task_configuration_list program_configuration_list */
/*
SYM_REF2(single_resource_declaration_c, task_configuration_list, program_configuration_list)
*/
/* helper symbol for single_resource_declaration */
/*
SYM_LIST(task_configuration_list_c)
*/
/* helper symbol for single_resource_declaration */
/*
SYM_LIST(program_configuration_list_c)
*/
/* helper symbol for
* - access_path
* - instance_specific_init
*/
/*
SYM_LIST(any_fb_name_list_c)
*/
/* [resource_name '.'] global_var_name ['.' structure_element_name] */
/*
SYM_REF4(global_var_reference_c, resource_name, global_var_name, structure_element_name, unused)
*/
/* prev_declared_program_name '.' symbolic_variable */
/*
SYM_REF2(program_output_reference_c, program_name, symbolic_variable)
*/
/* TASK task_name task_initialization */
/*
SYM_REF2(task_configuration_c, task_name, task_initialization)
*/
/* '(' [SINGLE ASSIGN data_source ','] [INTERVAL ASSIGN data_source ','] PRIORITY ASSIGN integer ')' */
/*
SYM_REF4(task_initialization_c, single_data_source, interval_data_source, priority_data_source, unused)
*/
/* PROGRAM [RETAIN | NON_RETAIN] program_name [WITH task_name] ':' program_type_name ['(' prog_conf_elements ')'] */
// SYM_REF6(program_configuration_c, retain_option, program_name, task_name, program_type_name, prog_conf_elements, unused)
void *visit(program_configuration_c *symbol);
/* prog_conf_elements ',' prog_conf_element */
// SYM_LIST(prog_conf_elements_c)
void *visit(prog_conf_elements_c *symbol);
/* fb_name WITH task_name */
/*
SYM_REF2(fb_task_c, fb_name, task_name)
*/
/* any_symbolic_variable ASSIGN prog_data_source */
// SYM_REF2(prog_cnxn_assign_c, symbolic_variable, prog_data_source)
void *visit(prog_cnxn_assign_c *symbol);
/* any_symbolic_variable SENDTO data_sink */
// SYM_REF2(prog_cnxn_sendto_c, symbolic_variable, prog_data_source)
void *visit(prog_cnxn_sendto_c *symbol);
/* VAR_CONFIG instance_specific_init_list END_VAR */
/*
SYM_REF2(instance_specific_initializations_c, instance_specific_init_list, unused)
*/
/* helper symbol for instance_specific_initializations */
/*
SYM_LIST(instance_specific_init_list_c)
*/
/* resource_name '.' program_name '.' {fb_name '.'}
((variable_name [location] ':' located_var_spec_init) | (fb_name ':' fb_initialization))
*/
/*
SYM_REF6(instance_specific_init_c, resource_name, program_name, any_fb_name_list, variable_name, location, initialization)
*/
/* helper symbol for instance_specific_init */
/* function_block_type_name ':=' structure_initialization */
/*
SYM_REF2(fb_initialization_c, function_block_type_name, structure_initialization)
*/
/****************************************/
/* B.2 - Language IL (Instruction List) */
/****************************************/
/***********************************/
/* B 2.1 Instructions and Operands */
/***********************************/
/* | function_name [il_operand_list] */
// SYM_REF2(il_function_call_c, function_name, il_operand_list)
void *visit(il_function_call_c *symbol);
/* | function_name '(' eol_list [il_param_list] ')' */
// SYM_REF2(il_formal_funct_call_c, function_name, il_param_list)
void *visit(il_formal_funct_call_c *symbol);
/* il_call_operator prev_declared_fb_name
* | il_call_operator prev_declared_fb_name '(' ')'
* | il_call_operator prev_declared_fb_name '(' eol_list ')'
* | il_call_operator prev_declared_fb_name '(' il_operand_list ')'
* | il_call_operator prev_declared_fb_name '(' eol_list il_param_list ')'
*/
// SYM_REF4(il_fb_call_c, il_call_operator, fb_name, il_operand_list, il_param_list)
void *visit(il_fb_call_c *symbol);
/* | il_operand_list ',' il_operand */
// SYM_LIST(il_operand_list_c)
void *visit(il_operand_list_c *symbol);
/* | il_initial_param_list il_param_instruction */
// SYM_LIST(il_param_list_c)
void *visit(il_param_list_c *symbol);
/* il_assign_operator il_operand
* | il_assign_operator '(' eol_list simple_instr_list ')'
*/
// SYM_REF4(il_param_assignment_c, il_assign_operator, il_operand, simple_instr_list, unused)
void *visit(il_param_assignment_c *symbol);
/* il_assign_out_operator variable */
// SYM_REF2(il_param_out_assignment_c, il_assign_out_operator, variable);
void *visit(il_param_out_assignment_c *symbol);
/*******************/
/* B 2.2 Operators */
/*******************/
/* any_identifier ASSIGN */
// SYM_REF1(il_assign_operator_c, variable_name)
void *visit(il_assign_operator_c *symbol);
/*| [NOT] any_identifier SENDTO */
// SYM_REF2(il_assign_out_operator_c, option, variable_name)
void *visit(il_assign_out_operator_c *symbol);
/***************************************/
/* B.3 - Language ST (Structured Text) */
/***************************************/
/***********************/
/* B 3.1 - Expressions */
/***********************/
/*
SYM_REF2(function_invocation_c, function_name, parameter_assignment_list)
*/
void *visit(function_invocation_c *symbol);
/********************/
/* B 3.2 Statements */
/********************/
/*********************************/
/* B 3.2.1 Assignment Statements */
/*********************************/
/*
SYM_REF2(assignment_statement_c, l_exp, r_exp)
*/
/*****************************************/
/* B 3.2.2 Subprogram Control Statements */
/*****************************************/
/* RETURN */
// SYM_REF0(return_statement_c)
/* fb_name '(' [param_assignment_list] ')' */
/* param_assignment_list -> may be NULL ! */
// SYM_REF2(fb_invocation_c, fb_name, param_assignment_list)
void *visit(fb_invocation_c *symbol);
/* helper symbol for fb_invocation */
/* param_assignment_list ',' param_assignment */
// SYM_LIST(param_assignment_list_c)
void *visit(param_assignment_list_c *symbol);
/* variable_name ASSIGN expression */
// SYM_REF2(input_variable_param_assignment_c, variable_name, expression)
void *visit(input_variable_param_assignment_c *symbol);
/* [NOT] variable_name '=>' variable */
// SYM_REF4(output_variable_param_assignment_c, not_param, variable_name, variable, unused)
void *visit(output_variable_param_assignment_c *symbol);
/* helper CLASS for output_variable_param_assignment */
// SYM_REF0(not_paramassign_c)
// TODO... ???
}; // function_call_param_iterator_c