diff -r 0c2ef191b22a -r d48f53715f77 stage3/print_datatypes_error.hh --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/stage3/print_datatypes_error.hh Wed Feb 01 19:49:11 2012 +0000 @@ -0,0 +1,303 @@ +/* + * matiec - a compiler for the programming languages defined in IEC 61131-3 + * + * Copyright (C) 2009-2011 Mario de Sousa (msousa@fe.up.pt) + * Copyright (C) 2011-2012 Manuele Conti (manuele.conti@sirius-es.it) + * Copyright (C) 2011-2012 Matteo Facchinetti (matteo.facchinetti@sirius-es.it) + * + * + * 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 . + * + * + * 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) + * + */ + + +#include "../absyntax_utils/absyntax_utils.hh" + +class print_datatypes_error_c: public iterator_visitor_c { + + private: + search_varfb_instance_type_c *search_varfb_instance_type; + search_base_type_c search_base_type; + /* When calling a function block, we must first find it's type, + * by searching through the declarations of the variables currently + * in scope. + * This class does just that... + * A new object instance is instantiated whenever we start checking semantics + * for a function block type declaration, or a program declaration. + * This object instance will then later be called while the + * function block's or the program's body is being handled. + * + * Note that functions cannot contain calls to function blocks, + * so we do not create an object instance when handling + * a function declaration. + */ + + /* In IL code, once we find a type mismatch error, it is best to + * ignore any further errors until the end of the logical operation, + * i.e. until the next LD. + * However, we cannot clear the il_error flag on all LD operations, + * as these may also be used within parenthesis. LD operations + * within parenthesis may not clear the error flag. + * We therefore need a counter to know how deep inside a parenthesis + * structure we are. + */ + int il_parenthesis_level; + bool il_error; + bool error_found; + + /* the current data type of the data stored in the IL stack, i.e. the default variable */ + symbol_c *prev_il_instruction; + /* the current IL operand being analyzed - its symbol and its data type */ + symbol_c *il_operand_type; + symbol_c *il_operand; + + + public: + print_datatypes_error_c(symbol_c *ignore); + virtual ~print_datatypes_error_c(void); + int get_error_found(); + + /* a helper function... */ + symbol_c *base_type(symbol_c *symbol); + + /*********************/ + /* B 1.2 - Constants */ + /*********************/ + /******************************/ + /* B 1.2.1 - Numeric Literals */ + /******************************/ + void *visit(real_c *symbol); + void *visit(integer_c *symbol); + void *visit(neg_real_c *symbol); + void *visit(neg_integer_c *symbol); + void *visit(binary_integer_c *symbol); + void *visit(octal_integer_c *symbol); + void *visit(hex_integer_c *symbol); + void *visit(integer_literal_c *symbol); + void *visit(real_literal_c *symbol); + void *visit(bit_string_literal_c *symbol); + void *visit(boolean_literal_c *symbol); + void *visit(boolean_true_c *symbol); + void *visit(boolean_false_c *symbol); + + /*******************************/ + /* B.1.2.2 Character Strings */ + /*******************************/ + void *visit(double_byte_character_string_c *symbol); + void *visit(single_byte_character_string_c *symbol); + + /***************************/ + /* B 1.2.3 - Time Literals */ + /***************************/ + /************************/ + /* B 1.2.3.1 - Duration */ + /************************/ + void *visit(duration_c *symbol); + + /************************************/ + /* B 1.2.3.2 - Time of day and Date */ + /************************************/ + void *visit(time_of_day_c *symbol); + void *visit(date_c *symbol); + void *visit(date_and_time_c *symbol); + + /**********************/ + /* B 1.3 - Data types */ + /**********************/ + /********************************/ + /* B 1.3.3 - Derived data types */ + /********************************/ + void *visit(data_type_declaration_c *symbol); + void *visit(enumerated_value_c *symbol); + + /*********************/ + /* B 1.4 - Variables */ + /*********************/ + void *visit(symbolic_variable_c *symbol); + + /********************************************/ + /* B 1.4.1 - Directly Represented Variables */ + /********************************************/ + void *visit(direct_variable_c *symbol); + + /*************************************/ + /* B 1.4.2 - Multi-element variables */ + /*************************************/ + void *visit(array_variable_c *symbol); + void *visit(structured_variable_c *symbol); + + /**************************************/ + /* B 1.5 - Program organization units */ + /**************************************/ + /***********************/ + /* B 1.5.1 - Functions */ + /***********************/ + void *visit(function_declaration_c *symbol); + + /*****************************/ + /* B 1.5.2 - Function blocks */ + /*****************************/ + void *visit(function_block_declaration_c *symbol); + + /**********************/ + /* B 1.5.3 - Programs */ + /**********************/ + void *visit(program_declaration_c *symbol); + + /********************************/ + /* B 1.7 Configuration elements */ + /********************************/ + void *visit(configuration_declaration_c *symbol); + + /****************************************/ + /* B.2 - Language IL (Instruction List) */ + /****************************************/ + /***********************************/ + /* B 2.1 Instructions and Operands */ + /***********************************/ + // void *visit(instruction_list_c *symbol); + void *visit(il_simple_operation_c *symbol); + void *visit(il_function_call_c *symbol); + void *visit(il_expression_c *symbol); + void *visit(il_fb_call_c *symbol); + void *visit(il_formal_funct_call_c *symbol); + /* + void *visit(il_operand_list_c *symbol); + void *visit(simple_instr_list_c *symbol); + void *visit(il_param_list_c *symbol); + void *visit(il_param_assignment_c *symbol); + void *visit(il_param_out_assignment_c *symbol); + */ + + /*******************/ + /* B 2.2 Operators */ + /*******************/ + void *visit(LD_operator_c *symbol); + void *visit(LDN_operator_c *symbol); + void *visit(ST_operator_c *symbol); + void *visit(STN_operator_c *symbol); + void *visit(NOT_operator_c *symbol); + void *visit(S_operator_c *symbol); + void *visit(R_operator_c *symbol); + void *visit(S1_operator_c *symbol); + void *visit(R1_operator_c *symbol); + void *visit(CLK_operator_c *symbol); + void *visit(CU_operator_c *symbol); + void *visit(CD_operator_c *symbol); + void *visit(PV_operator_c *symbol); + void *visit(IN_operator_c *symbol); + void *visit(PT_operator_c *symbol); + void *visit(AND_operator_c *symbol); + void *visit(OR_operator_c *symbol); + void *visit(XOR_operator_c *symbol); + void *visit(ANDN_operator_c *symbol); + void *visit(ORN_operator_c *symbol); + void *visit(XORN_operator_c *symbol); + void *visit(ADD_operator_c *symbol); + void *visit(SUB_operator_c *symbol); + void *visit(MUL_operator_c *symbol); + void *visit(DIV_operator_c *symbol); + void *visit(MOD_operator_c *symbol); + void *visit(GT_operator_c *symbol); + void *visit(GE_operator_c *symbol); + void *visit(EQ_operator_c *symbol); + void *visit(LT_operator_c *symbol); + void *visit(LE_operator_c *symbol); + void *visit(NE_operator_c *symbol); + void *visit(CAL_operator_c *symbol); + void *visit(CALC_operator_c *symbol); + void *visit(CALCN_operator_c *symbol); + void *visit(RET_operator_c *symbol); + void *visit(RETC_operator_c *symbol); + void *visit(RETCN_operator_c *symbol); + void *visit(JMP_operator_c *symbol); + void *visit(JMPC_operator_c *symbol); + void *visit(JMPCN_operator_c *symbol); + /* Symbol class handled together with function call checks */ + // void *visit(il_assign_operator_c *symbol, variable_name); + /* Symbol class handled together with function call checks */ + // void *visit(il_assign_operator_c *symbol, option, variable_name); + + /***************************************/ + /* B.3 - Language ST (Structured Text) */ + /***************************************/ + /***********************/ + /* B 3.1 - Expressions */ + /***********************/ + void *visit(or_expression_c *symbol); + void *visit(xor_expression_c *symbol); + void *visit(and_expression_c *symbol); + void *visit(equ_expression_c *symbol); + void *visit(notequ_expression_c *symbol); + void *visit(lt_expression_c *symbol); + void *visit(gt_expression_c *symbol); + void *visit(le_expression_c *symbol); + void *visit(ge_expression_c *symbol); + void *visit(add_expression_c *symbol); + void *visit(sub_expression_c *symbol); + void *visit(mul_expression_c *symbol); + void *visit(div_expression_c *symbol); + void *visit(mod_expression_c *symbol); + void *visit(power_expression_c *symbol); + void *visit(neg_expression_c *symbol); + void *visit(not_expression_c *symbol); + void *visit(function_invocation_c *symbol); + + /*********************************/ + /* B 3.2.1 Assignment Statements */ + /*********************************/ + void *visit(assignment_statement_c *symbol); + + /*****************************************/ + /* B 3.2.2 Subprogram Control Statements */ + /*****************************************/ + //void *visit(fb_invocation_c *symbol); + + /********************************/ + /* B 3.2.3 Selection Statements */ + /********************************/ + void *visit(if_statement_c *symbol); + // void *visit(elseif_statement_list_c *symbol); + void *visit(elseif_statement_c *symbol); + void *visit(case_statement_c *symbol); + // void *visit(case_element_list_c *symbol); + // void *visit(case_element_c *symbol); + // void *visit(case_list_c *symbol); + + /********************************/ + /* B 3.2.4 Iteration Statements */ + /********************************/ + void *visit(for_statement_c *symbol); + void *visit(while_statement_c *symbol); + void *visit(repeat_statement_c *symbol); + +}; // print_datatypes_error_c + + + + + + +