msousa@417: /*
msousa@417: * matiec - a compiler for the programming languages defined in IEC 61131-3
msousa@417: *
msousa@417: * Copyright (C) 2009-2012 Mario de Sousa (msousa@fe.up.pt)
msousa@417: * Copyright (C) 2012 Manuele Conti (manuele.conti@sirius-es.it)
msousa@417: * Copyright (C) 2012 Matteo Facchinetti (matteo.facchinetti@sirius-es.it)
msousa@417: *
msousa@417: *
msousa@417: * This program is free software: you can redistribute it and/or modify
msousa@417: * it under the terms of the GNU General Public License as published by
msousa@417: * the Free Software Foundation, either version 3 of the License, or
msousa@417: * (at your option) any later version.
msousa@417: *
msousa@417: * This program is distributed in the hope that it will be useful,
msousa@417: * but WITHOUT ANY WARRANTY; without even the implied warranty of
msousa@417: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
msousa@417: * GNU General Public License for more details.
msousa@417: *
msousa@417: * You should have received a copy of the GNU General Public License
msousa@417: * along with this program. If not, see .
msousa@417: *
msousa@417: *
msousa@417: * This code is made available on the understanding that it will not be
msousa@417: * used in safety-critical situations without a full and competent review.
msousa@417: */
msousa@417:
msousa@417: /*
msousa@417: * An IEC 61131-3 compiler.
msousa@417: *
msousa@417: * Based on the
msousa@417: * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)
msousa@417: *
msousa@417: */
msousa@417:
msousa@417:
msousa@417: #include "../absyntax_utils/absyntax_utils.hh"
msousa@438: #include "datatype_functions.hh"
msousa@417:
msousa@417: class narrow_candidate_datatypes_c: public iterator_visitor_c {
msousa@417:
msousa@417: private:
msousa@417: search_varfb_instance_type_c *search_varfb_instance_type;
msousa@417: search_base_type_c search_base_type;
msousa@417: symbol_c *il_operand;
msousa@459: il_instruction_c *fake_prev_il_instruction;
msousa@459: std::vector *prev_il_instructions;
msousa@459: std::vector *prev_il_instructions_intersected_datatypes;
msousa@417:
msousa@417: bool is_widening_compatible(symbol_c *left_type, symbol_c *right_type, symbol_c *result_type, const struct widen_entry widen_table[]);
msousa@417:
msousa@456: void narrow_function_invocation(symbol_c *f_call, generic_function_call_t fcall_data);
msousa@456: void narrow_nonformal_call(symbol_c *f_call, symbol_c *f_decl, int *ext_parm_count = NULL);
msousa@456: void narrow_formal_call(symbol_c *f_call, symbol_c *f_decl, int *ext_parm_count = NULL);
msousa@456: void *narrow_implicit_il_fb_call(symbol_c *il_instruction, const char *param_name, symbol_c *&called_fb_declaration);
msousa@443: void *handle_il_instruction(symbol_c *symbol);
msousa@455: void *narrow_conditional_flow_control_IL_instruction(symbol_c *symbol);
msousa@455:
msousa@438:
msousa@417: public:
msousa@417: narrow_candidate_datatypes_c(symbol_c *ignore);
msousa@417: virtual ~narrow_candidate_datatypes_c(void);
msousa@417:
msousa@417: symbol_c *base_type(symbol_c *symbol);
msousa@417:
msousa@417: /**********************/
msousa@417: /* B 1.3 - Data types */
msousa@417: /**********************/
msousa@417: /********************************/
msousa@417: /* B 1.3.3 - Derived data types */
msousa@417: /********************************/
msousa@417: void *visit(subrange_c *symbol);
msousa@443: void *visit(simple_spec_init_c *symbol);
msousa@417:
msousa@417: /*********************/
msousa@417: /* B 1.4 - Variables */
msousa@417: /*********************/
msousa@417: /********************************************/
msousa@417: /* B 1.4.1 - Directly Represented Variables */
msousa@417: /********************************************/
msousa@417: /*************************************/
msousa@417: /* B 1.4.2 - Multi-element variables */
msousa@417: /*************************************/
msousa@417: void *visit(array_variable_c *symbol);
msousa@417: void *visit(subscript_list_c *symbol);
msousa@417:
msousa@417: /**************************************/
msousa@417: /* B 1.5 - Program organization units */
msousa@417: /**************************************/
msousa@417: /***********************/
msousa@417: /* B 1.5.1 - Functions */
msousa@417: /***********************/
msousa@417: void *visit(function_declaration_c *symbol);
msousa@417:
msousa@417: /*****************************/
msousa@417: /* B 1.5.2 - Function blocks */
msousa@417: /*****************************/
msousa@417: void *visit(function_block_declaration_c *symbol);
msousa@417:
msousa@417: /**********************/
msousa@417: /* B 1.5.3 - Programs */
msousa@417: /**********************/
msousa@417: void *visit(program_declaration_c *symbol);
msousa@417:
msousa@417: /********************************/
msousa@417: /* B 1.7 Configuration elements */
msousa@417: /********************************/
msousa@417: void *visit(configuration_declaration_c *symbol);
msousa@417: /****************************************/
msousa@417: /* B.2 - Language IL (Instruction List) */
msousa@417: /****************************************/
msousa@417: /***********************************/
msousa@417: /* B 2.1 Instructions and Operands */
msousa@417: /***********************************/
msousa@443: void *visit(instruction_list_c *symbol);
msousa@454: void *visit(il_instruction_c *symbol);
msousa@417: void *visit(il_simple_operation_c *symbol);
msousa@417: void *visit(il_function_call_c *symbol);
msousa@417: void *visit(il_expression_c *symbol);
msousa@417: void *visit(il_fb_call_c *symbol);
msousa@417: void *visit(il_formal_funct_call_c *symbol);
msousa@452: // void *visit(il_operand_list_c *symbol);
msousa@452: void *visit(simple_instr_list_c *symbol);
msousa@453: void *visit(il_simple_instruction_c*symbol);
msousa@452: // void *visit(il_param_list_c *symbol);
msousa@452: // void *visit(il_param_assignment_c *symbol);
msousa@452: // void *visit(il_param_out_assignment_c *symbol);
msousa@417:
msousa@417: /*******************/
msousa@417: /* B 2.2 Operators */
msousa@417: /*******************/
msousa@417: void *visit(LD_operator_c *symbol);
msousa@417: void *visit(LDN_operator_c *symbol);
msousa@417: void *visit(ST_operator_c *symbol);
msousa@417: void *visit(STN_operator_c *symbol);
msousa@417: void *visit(NOT_operator_c *symbol);
msousa@417: void *visit(S_operator_c *symbol);
msousa@417: void *visit(R_operator_c *symbol);
msousa@417: void *visit(S1_operator_c *symbol);
msousa@417: void *visit(R1_operator_c *symbol);
msousa@417: void *visit(CLK_operator_c *symbol);
msousa@417: void *visit(CU_operator_c *symbol);
msousa@417: void *visit(CD_operator_c *symbol);
msousa@417: void *visit(PV_operator_c *symbol);
msousa@417: void *visit(IN_operator_c *symbol);
msousa@417: void *visit(PT_operator_c *symbol);
msousa@417: void *visit(AND_operator_c *symbol);
msousa@417: void *visit(OR_operator_c *symbol);
msousa@417: void *visit(XOR_operator_c *symbol);
msousa@417: void *visit(ANDN_operator_c *symbol);
msousa@417: void *visit(ORN_operator_c *symbol);
msousa@417: void *visit(XORN_operator_c *symbol);
msousa@417: void *visit(ADD_operator_c *symbol);
msousa@417: void *visit(SUB_operator_c *symbol);
msousa@417: void *visit(MUL_operator_c *symbol);
msousa@417: void *visit(DIV_operator_c *symbol);
msousa@417: void *visit(MOD_operator_c *symbol);
msousa@417: void *visit(GT_operator_c *symbol);
msousa@417: void *visit(GE_operator_c *symbol);
msousa@417: void *visit(EQ_operator_c *symbol);
msousa@417: void *visit(LT_operator_c *symbol);
msousa@417: void *visit(LE_operator_c *symbol);
msousa@417: void *visit(NE_operator_c *symbol);
msousa@417: void *visit(CAL_operator_c *symbol);
msousa@417: void *visit(CALC_operator_c *symbol);
msousa@417: void *visit(CALCN_operator_c *symbol);
msousa@417: void *visit(RET_operator_c *symbol);
msousa@417: void *visit(RETC_operator_c *symbol);
msousa@417: void *visit(RETCN_operator_c *symbol);
msousa@417: void *visit(JMP_operator_c *symbol);
msousa@417: void *visit(JMPC_operator_c *symbol);
msousa@417: void *visit(JMPCN_operator_c *symbol);
msousa@417: /* Symbol class handled together with function call checks */
msousa@417: // void *visit(il_assign_operator_c *symbol, variable_name);
msousa@417: /* Symbol class handled together with function call checks */
msousa@417: // void *visit(il_assign_operator_c *symbol, option, variable_name);
msousa@417: /***************************************/
msousa@417: /* B.3 - Language ST (Structured Text) */
msousa@417: /***************************************/
msousa@417: /***********************/
msousa@417: /* B 3.1 - Expressions */
msousa@417: /***********************/
msousa@417: void *visit(or_expression_c *symbol);
msousa@417: void *visit(xor_expression_c *symbol);
msousa@417: void *visit(and_expression_c *symbol);
msousa@417: void *visit(equ_expression_c *symbol);
msousa@417: void *visit(notequ_expression_c *symbol);
msousa@417: void *visit(lt_expression_c *symbol);
msousa@417: void *visit(gt_expression_c *symbol);
msousa@417: void *visit(le_expression_c *symbol);
msousa@417: void *visit(ge_expression_c *symbol);
msousa@417: void *visit(add_expression_c *symbol);
msousa@417: void *visit(sub_expression_c *symbol);
msousa@417: void *visit(mul_expression_c *symbol);
msousa@417: void *visit(div_expression_c *symbol);
msousa@417: void *visit(mod_expression_c *symbol);
msousa@417: void *visit(power_expression_c *symbol);
msousa@417: void *visit(neg_expression_c *symbol);
msousa@417: void *visit(not_expression_c *symbol);
msousa@417:
msousa@417: void *visit(function_invocation_c *symbol);
msousa@417:
msousa@417: /*********************************/
msousa@417: /* B 3.2.1 Assignment Statements */
msousa@417: /*********************************/
msousa@417: void *visit(assignment_statement_c *symbol);
msousa@417:
msousa@423: /*****************************************/
msousa@423: /* B 3.2.2 Subprogram Control Statements */
msousa@423: /*****************************************/
msousa@423: void *visit(fb_invocation_c *symbol);
msousa@423:
msousa@417: /********************************/
msousa@417: /* B 3.2.3 Selection Statements */
msousa@417: /********************************/
msousa@417: void *visit(if_statement_c *symbol);
msousa@417: void *visit(elseif_statement_c *symbol);
msousa@417: void *visit(case_statement_c *symbol);
msousa@417: void *visit(case_element_list_c *symbol);
msousa@417: void *visit(case_element_c *symbol);
msousa@417: void *visit(case_list_c *symbol);
msousa@417:
msousa@417: /********************************/
msousa@417: /* B 3.2.4 Iteration Statements */
msousa@417: /********************************/
msousa@417: void *visit(for_statement_c *symbol);
msousa@417: void *visit(while_statement_c *symbol);
msousa@417: void *visit(repeat_statement_c *symbol);
msousa@417:
msousa@417: }; // narrow_candidate_datatypes_c
msousa@417:
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