--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/stage4/generate_cc/generate_cc.cc Wed Jan 31 15:32:38 2007 +0100
@@ -0,0 +1,1010 @@
+/*
+ * (c) 2003 Mario de Sousa
+ *
+ * Offered to the public under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2 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.
+ *
+ * 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 IL and ST compiler.
+ *
+ * Based on the
+ * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)
+ *
+ */
+
+
+/*
+ * This is one of the versions available for the 4th stage.
+ *
+ * This 4th stage generates a c++ source program equivalent
+ * to the IL and ST code.
+ */
+
+
+
+
+
+
+// #include <stdio.h> /* required for NULL */
+#include <string>
+#include <iostream>
+
+#include "../../util/symtable.hh"
+#include "../../util/dsymtable.hh"
+#include "../../absyntax/visitor.hh"
+
+#include "../stage4.hh"
+
+
+
+
+
+
+
+
+//#define DEBUG
+#ifdef DEBUG
+#define TRACE(classname) printf("\n____%s____\n",classname);
+#else
+#define TRACE(classname)
+#endif
+
+
+
+#define ERROR error_exit(__FILE__,__LINE__)
+/* function defined in main.cc */
+extern void error_exit(const char *file_name, int line_no);
+
+
+
+
+
+
+
+/* A symbol table with all globally declared functions... */
+function_declaration_c null_symbol1(NULL,NULL,NULL,NULL);
+dsymtable_c<function_declaration_c *, &null_symbol1> function_symtable;
+
+/* A symbol table with all globally declared functions block types... */
+function_block_declaration_c null_symbol2(NULL,NULL,NULL,NULL);
+symtable_c<function_block_declaration_c *, &null_symbol2> function_block_type_symtable;
+
+/* A symbol table with all globally declared program types... */
+program_declaration_c null_symbol3(NULL,NULL,NULL,NULL);
+symtable_c<program_declaration_c *, &null_symbol3> program_type_symtable;
+
+/* A symbol table with all user declared type definitions... */
+/* Note that function block types and program types have their
+ * own symbol tables, so do not get placed in this symbol table!
+ */
+symbol_c null_symbol4;
+symtable_c<symbol_c *, &null_symbol4> type_symtable;
+
+
+
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+
+
+/* returns 0 if the names are equal!! */
+/* NOTE: it must ignore case!! */
+static int compare_identifiers(symbol_c *ident1, symbol_c *ident2) {
+
+ identifier_c *name1 = dynamic_cast<identifier_c *>(ident1);
+ identifier_c *name2 = dynamic_cast<identifier_c *>(ident2);
+
+ if ((name1 == NULL) || (name2 == NULL))
+ /* invalid identifiers... */
+ return -1;
+
+ if (strcasecmp(name1->value, name2->value) == 0)
+ return 0;
+
+ /* identifiers do not match! */
+ return 1;
+}
+
+
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+
+/* Unlike Programs and Configurations which get mapped onto C++ classes,
+ * Function Blocks are mapped onto a C structure containing the variables, and
+ * a C function containing the code in the FB's body. This is to allow direct allocation
+ * of a FB variable (which is really an instance of the C data structure) to
+ * a member of a union variable (note that classes with constructors cannot
+ * be mebers of a union), which is done in IL when loading a FB onto IL's
+ * default variable.
+ *
+ * So as not to clash the names of the C data structure and the C function,
+ * the C structure is given a name identical to that of the FB name, whereas
+ * the name of the function is the FB name with a constant string appended.
+ * The value of that constant string which is appended is defined in the following
+ * constant.
+ * In order not to clash with any variable in the IL and ST source codem the
+ * following constant should contain a double underscore, which is not allowed
+ * in IL and ST.
+ *
+ * e.g.: FUNTION_BLOCK TEST
+ * is mapped onto a TEST data structure, and a TEST_body__ function.
+ */
+
+#define FB_FUNCTION_SUFFIX "_body__"
+
+/* The FB body function is passed as the only parameter a pointer to the FB data
+ * structure instance. The name of this parameter is given by the following cosntant.
+ * In order not to clash with any variable in the IL and ST source codem the
+ * following constant should contain a double underscore, which is not allowed
+ * in IL and ST.
+ *
+ * e.g.: the body of FUNTION_BLOCK TEST
+ * is mapped onto the C function
+ * TEST_body__(TEST *data__)
+ */
+
+#define FB_FUNCTION_PARAM "data__"
+
+
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+
+
+#include "spec_init_separator.cc"
+#include "function_param_iterator.cc"
+#include "function_call_iterator.cc"
+#include "function_call_param_iterator.cc"
+#include "type_initial_value.cc"
+#include "search_fb_instance_decl.cc"
+#include "search_base_type.cc"
+#include "search_var_instance_decl.cc"
+#include "decompose_var_instance_name.cc"
+#include "search_varfb_instance_type.cc"
+#include "search_constant_type.cc"
+
+#include "generate_cc_base.cc"
+#include "generate_cc_typedecl.cc"
+#include "generate_cc_vardecl.cc"
+#include "generate_cc_configbody.cc"
+
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+
+/* Generate a name for a temporary variable.
+ * Each new name generated is appended a different number,
+ * starting off from 0.
+ * After calling reset(), the names will start off again from 0.
+ */
+#define VAR_LEADER "__"
+#define TEMP_VAR VAR_LEADER "TMP_"
+#define SOURCE_VAR VAR_LEADER "SRC_"
+
+#include "generate_cc_tempvardecl.cc"
+
+#include "generate_cc_st.cc"
+#include "generate_cc_il.cc"
+
+#include "generate_cc.hh"
+
+
+
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+
+/* A helper class that knows how to generate code for both the IL and ST languages... */
+class generate_cc_IL_and_ST_c: public null_visitor_c {
+ private:
+ stage4out_c *s4o_ptr;
+ symbol_c *scope;
+ const char *variable_prefix;
+
+ public:
+ generate_cc_IL_and_ST_c(stage4out_c *s4o_ptr, symbol_c *scope, const char *variable_prefix = NULL) {
+ if (NULL == scope) ERROR;
+ this->s4o_ptr = s4o_ptr;
+ this->scope = scope;
+ this->variable_prefix = variable_prefix;
+ }
+
+
+ public:
+/****************************************/
+/* B.2 - Language IL (Instruction List) */
+/****************************************/
+
+/***********************************/
+/* B 2.1 Instructions and Operands */
+/***********************************/
+/*| instruction_list il_instruction */
+void *visit(instruction_list_c *symbol) {
+ generate_cc_il_c generate_cc_il(s4o_ptr, scope, variable_prefix);
+ generate_cc_il.generate(symbol);
+ return NULL;
+}
+
+/* Remainder implemented in generate_cc_il_c... */
+
+/***************************************/
+/* B.3 - Language ST (Structured Text) */
+/***************************************/
+/***********************/
+/* B 3.1 - Expressions */
+/***********************/
+/* Implemented in generate_cc_st_c */
+
+/********************/
+/* B 3.2 Statements */
+/********************/
+void *visit(statement_list_c *symbol) {
+ generate_cc_st_c generate_cc_st(s4o_ptr, scope, variable_prefix);
+ generate_cc_st.generate(symbol);
+ return NULL;
+}
+
+/* Remainder implemented in generate_cc_st_c... */
+};
+
+
+
+
+
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+
+
+class generate_cc_c: public generate_cc_typedecl_c {
+
+ public:
+ generate_cc_c(stage4out_c *s4o_ptr)
+ : generate_cc_typedecl_c(s4o_ptr) {};
+ virtual ~generate_cc_c(void) {}
+
+
+ public:
+/***************************/
+/* B 0 - Programming Model */
+/***************************/
+void *visit(library_c *symbol) {
+ TRACE("library_c");
+
+ /* Insert the header... */
+ s4o.print("/*******************************************/\n");
+ s4o.print("/* FILE GENERATED BY iec2cc */\n");
+ s4o.print("/* Editing this file is not recommended... */\n");
+ s4o.print("/*******************************************/\n");
+ s4o.print("\n\n\n\n\n");
+ s4o.print("#include \"plciec.h\"\n");
+ s4o.print("\n\n\n\n\n");
+
+ /* now do the actual code... */
+ print_list(symbol);
+ s4o.print("\n\n");
+
+ /* Finish off with the main() */
+ s4o.print("#include \"plciec.cc\"\n");
+ s4o.print("\n\n");
+
+ // function_symtable.print();
+ return NULL;
+}
+
+/*************************/
+/* B.1 - Common elements */
+/*************************/
+/*******************************************/
+/* B 1.1 - Letters, digits and identifiers */
+/*******************************************/
+ /* done in base class(es) */
+
+/*********************/
+/* B 1.2 - Constants */
+/*********************/
+ /* originally empty... */
+
+/******************************/
+/* B 1.2.1 - Numeric Literals */
+/******************************/
+ /* done in base class(es) */
+
+/*******************************/
+/* B.1.2.2 Character Strings */
+/*******************************/
+ /* done in base class(es) */
+
+/***************************/
+/* B 1.2.3 - Time Literals */
+/***************************/
+/************************/
+/* B 1.2.3.1 - Duration */
+/************************/
+ /* done in base class(es) */
+
+/************************************/
+/* B 1.2.3.2 - Time of day and Date */
+/************************************/
+ /* done in base class(es) */
+
+/**********************/
+/* B.1.3 - Data types */
+/**********************/
+/***********************************/
+/* B 1.3.1 - Elementary Data Types */
+/***********************************/
+ /* done in base class(es) */
+
+/********************************/
+/* B.1.3.2 - Generic data types */
+/********************************/
+ /* originally empty... */
+
+/********************************/
+/* B 1.3.3 - Derived data types */
+/********************************/
+ /* done in base class(es) */
+
+/*********************/
+/* B 1.4 - Variables */
+/*********************/
+ /* done in base class(es) */
+
+/********************************************/
+/* B.1.4.1 Directly Represented Variables */
+/********************************************/
+ /* done in base class(es) */
+
+/*************************************/
+/* B.1.4.2 Multi-element Variables */
+/*************************************/
+ /* done in base class(es) */
+
+/******************************************/
+/* B 1.4.3 - Declaration & Initialisation */
+/******************************************/
+ /* done in base class(es) */
+
+/**************************************/
+/* B.1.5 - Program organization units */
+/**************************************/
+/***********************/
+/* B 1.5.1 - Functions */
+/***********************/
+
+public:
+/* FUNCTION derived_function_name ':' elementary_type_name io_OR_function_var_declarations_list function_body END_FUNCTION */
+/* | FUNCTION derived_function_name ':' derived_type_name io_OR_function_var_declarations_list function_body END_FUNCTION */
+void *visit(function_declaration_c *symbol) {
+ generate_cc_vardecl_c *vardecl;
+ TRACE("function_declaration_c");
+
+ /* start off by adding this declaration to the global
+ * function declaration symbol table...
+ */
+ function_symtable.insert(symbol->derived_function_name, symbol);
+
+ /* (A) Function declaration... */
+ /* (A.1) Function return type */
+ s4o.print("// FUNCTION\n");
+ symbol->type_name->accept(*this); /* return type */
+ s4o.print(" ");
+ /* (A.2) Function name */
+ symbol->derived_function_name->accept(*this);
+ s4o.print("(");
+
+ /* (A.3) Function parameters */
+ s4o.indent_right();
+ vardecl = new generate_cc_vardecl_c(&s4o,
+ generate_cc_vardecl_c::finterface_vf,
+ generate_cc_vardecl_c::input_vt |
+ generate_cc_vardecl_c::output_vt |
+ generate_cc_vardecl_c::inoutput_vt);
+ vardecl->print(symbol->var_declarations_list);
+ delete vardecl;
+ s4o.indent_left();
+
+ s4o.print(")\n" + s4o.indent_spaces + "{\n");
+
+ /* (B) Function local variable declaration */
+ /* (B.1) Variables declared in ST source code */
+ s4o.indent_right();
+ vardecl = new generate_cc_vardecl_c(&s4o, generate_cc_vardecl_c::localinit_vf, generate_cc_vardecl_c::private_vt);
+ vardecl->print(symbol->var_declarations_list);
+ delete vardecl;
+
+ /* (B.2) Temporary variable for function's return value */
+ /* It will have the same name as the function itself! */
+ s4o.print(s4o.indent_spaces);
+ symbol->type_name->accept(*this); /* return type */
+ s4o.print(" ");
+ symbol->derived_function_name->accept(*this);
+ s4o.print(" = ");
+ {
+ /* get the default value of this variable's type */
+ symbol_c *default_value = (symbol_c *)symbol->type_name->accept(*type_initial_value_c::instance());
+ if (default_value == NULL) ERROR;
+ default_value->accept(*this);
+ }
+ s4o.print(";\n\n");
+
+ /* (C) Function body */
+ generate_cc_IL_and_ST_c generate_cc_code(&s4o, symbol);
+ symbol->function_body->accept(generate_cc_code);
+ s4o.print(s4o.indent_spaces + "return ");
+ symbol->derived_function_name->accept(*this);
+ s4o.print(";\n");
+ s4o.indent_left();
+ s4o.print(s4o.indent_spaces + "}\n\n\n");
+
+ return NULL;
+}
+
+
+/* The remaining var_declarations_list_c, function_var_decls_c
+ * and var2_init_decl_list_c are handled in the generate_cc_vardecl_c class
+ */
+
+
+/*****************************/
+/* B 1.5.2 - Function Blocks */
+/*****************************/
+public:
+/* FUNCTION_BLOCK derived_function_block_name io_OR_other_var_declarations function_block_body END_FUNCTION_BLOCK */
+//SYM_REF4(function_block_declaration_c, fblock_name, var_declarations, fblock_body, unused)
+void *visit(function_block_declaration_c *symbol) {
+ generate_cc_vardecl_c *vardecl;
+ TRACE("function_block_declaration_c");
+
+ /* start off by adding this declaration to the global
+ * function block declaration symbol table...
+ */
+ function_block_type_symtable.insert(symbol->fblock_name, symbol);
+
+ /* (A) Function Block data structure declaration... */
+ /* (A.1) Data structure declaration */
+ s4o.print("// FUNCTION_BLOCK ");
+ symbol->fblock_name->accept(*this);
+ s4o.print("\n// Data part\n");
+ s4o.print("typedef struct {\n");
+ s4o.indent_right();
+ /* (A.2) Public variables: i.e. the function parameters... */
+ s4o.print(s4o.indent_spaces + "// FB Interface - IN, OUT, IN_OUT variables\n");
+ vardecl = new generate_cc_vardecl_c(&s4o,
+ generate_cc_vardecl_c::local_vf,
+ generate_cc_vardecl_c::input_vt |
+ generate_cc_vardecl_c::output_vt |
+ generate_cc_vardecl_c::inoutput_vt);
+ vardecl->print(symbol->var_declarations);
+ delete vardecl;
+ s4o.print("\n");
+ /* (A.3) Private internal variables */
+ s4o.print(s4o.indent_spaces + "// FB private variables - TEMP, private and located variables\n");
+ vardecl = new generate_cc_vardecl_c(&s4o,
+ generate_cc_vardecl_c::local_vf,
+ generate_cc_vardecl_c::temp_vt |
+ generate_cc_vardecl_c::private_vt |
+ generate_cc_vardecl_c::located_vt);
+ vardecl->print(symbol->var_declarations);
+ delete vardecl;
+ s4o.print("\n");
+
+ /* (A.4) Function Block data structure type name. */
+ s4o.indent_left();
+ s4o.print("} ");
+ symbol->fblock_name->accept(*this);
+ s4o.print(";\n\n");
+
+
+ /* (B) Function with FB body */
+ /* (B.1) Function declaration */
+ s4o.print("// Code part\n");
+ /* function interface */
+ s4o.print("void ");
+ symbol->fblock_name->accept(*this);
+ s4o.print(FB_FUNCTION_SUFFIX);
+ s4o.print("(");
+ /* first and only parameter is a pointer to the data */
+ symbol->fblock_name->accept(*this);
+ s4o.print(" *");
+ s4o.print(FB_FUNCTION_PARAM);
+ s4o.print(") {\n");
+ s4o.indent_right();
+
+ /* (B.2) Initialize TEMP variables */
+ /* function body */
+ s4o.print(s4o.indent_spaces + "// Initialise TEMP variables\n");
+ vardecl = new generate_cc_vardecl_c(&s4o,
+ generate_cc_vardecl_c::init_vf,
+ generate_cc_vardecl_c::temp_vt);
+ vardecl->print(symbol->var_declarations, NULL, FB_FUNCTION_PARAM"->");
+ delete vardecl;
+ s4o.print("\n");
+
+ /* (B.3) Function code */
+ generate_cc_IL_and_ST_c generate_cc_code(&s4o, symbol, FB_FUNCTION_PARAM"->");
+ symbol->fblock_body->accept(generate_cc_code);
+ s4o.indent_left();
+ s4o.print(s4o.indent_spaces + "} // ");
+ symbol->fblock_name->accept(*this);
+ s4o.print(FB_FUNCTION_SUFFIX);
+ s4o.print(s4o.indent_spaces + "() \n\n");
+
+
+
+
+
+
+
+#if 0
+
++++++++++++++++++++++++++++++++++++++
+ s4o.print(s4o.indent_spaces + "class ");
+ symbol->fblock_name->accept(*this);
+ s4o.print(" {\n");
+ s4o.indent_right();
+
+ /* (A.2) Public variables: i.e. the function parameters... */
+ s4o.print(s4o.indent_spaces + "public:\n");
+ s4o.indent_right();
+ vardecl = new generate_cc_vardecl_c(&s4o,
+ generate_cc_vardecl_c::local_vf,
+ generate_cc_vardecl_c::input_vt |
+ generate_cc_vardecl_c::output_vt |
+ generate_cc_vardecl_c::inoutput_vt);
+ vardecl->print(symbol->var_declarations);
+ delete vardecl;
+ s4o.indent_left();
+ s4o.print("\n");
+
+ /* (A.3) Private internal variables */
+ s4o.print(s4o.indent_spaces + "private:\n");
+ s4o.indent_right();
+ vardecl = new generate_cc_vardecl_c(&s4o,
+ generate_cc_vardecl_c::local_vf,
+ generate_cc_vardecl_c::private_vt |
+ generate_cc_vardecl_c::located_vt);
+ vardecl->print(symbol->var_declarations);
+ delete vardecl;
+ s4o.indent_left();
+ s4o.print("\n");
+
+---------------------------------
+ /* (B) Constructor */
+ s4o.print(s4o.indent_spaces + "public:\n");
+ s4o.indent_right();
+ s4o.print(s4o.indent_spaces);
+ symbol->fblock_name->accept(*this);
+ s4o.print("(void)\n");
+ s4o.indent_right();
+ s4o.print(s4o.indent_spaces);
+ vardecl = new generate_cc_vardecl_c(&s4o,
+ generate_cc_vardecl_c::constructorinit_vf,
+ generate_cc_vardecl_c::input_vt |
+ generate_cc_vardecl_c::output_vt |
+ generate_cc_vardecl_c::inoutput_vt |
+ generate_cc_vardecl_c::private_vt);
+ vardecl->print(symbol->var_declarations);
+ delete vardecl;
+ s4o.print("\n" + s4o.indent_spaces + "{}\n\n");
+ s4o.indent_left();
+ s4o.indent_left();
+---------------------------------
+
+
+ /* (C) Public Function*/
+ /* (C.1) Public Function declaration */
+ s4o.print(s4o.indent_spaces + "public:\n");
+ s4o.indent_right();
+ s4o.print(s4o.indent_spaces + "void f(void) {\n");
+
+ /* (C.2) Temporary variables */
+ s4o.indent_right();
+ vardecl = new generate_cc_vardecl_c(&s4o, generate_cc_vardecl_c::localinit_vf, generate_cc_vardecl_c::temp_vt);
+ vardecl->print(symbol->var_declarations);
+ delete vardecl;
+ s4o.indent_left();
+ s4o.print("\n");
+
+ /* (C.3) Public Function body */
+ s4o.indent_right();
+ this->current_scope = symbol;
+ symbol->fblock_body->accept(*this);
+ this->current_scope = NULL;
+ s4o.indent_left();
+ s4o.print(s4o.indent_spaces + "} /* f() */\n\n");
+ s4o.indent_left();
+
+ /* (D) Close the class declaration... */
+ s4o.indent_left();
+ s4o.print(s4o.indent_spaces + "}; /* class ");
+ symbol->fblock_name->accept(*this);
+ s4o.print(" */\n");
+
+---------------------------------
+ /* (E) Initialise the static member variables... */
+ vardecl = new generate_cc_vardecl_c(&s4o,
+ generate_cc_vardecl_c::globalinit_vf,
+ generate_cc_vardecl_c::located_vt);
+ vardecl->print(symbol->var_declarations, symbol->fblock_name);
+ delete vardecl;
+
+#endif
+
+ s4o.indent_left();
+ s4o.print("\n\n\n\n");
+
+ return NULL;
+}
+
+
+/* The remaining temp_var_decls_c, temp_var_decls_list_c
+ * and non_retentive_var_decls_c are handled in the generate_cc_vardecl_c class
+ */
+
+
+/**********************/
+/* B 1.5.3 - Programs */
+/**********************/
+
+
+
+public:
+/* PROGRAM program_type_name program_var_declarations_list function_block_body END_PROGRAM */
+//SYM_REF4(program_declaration_c, program_type_name, var_declarations, function_block_body, unused)
+void *visit(program_declaration_c *symbol) {
+ generate_cc_vardecl_c *vardecl;
+ TRACE("program_declaration_c");
+
+ /* start off by adding this declaration to the global
+ * program declaration symbol table...
+ */
+ program_type_symtable.insert(symbol->program_type_name, symbol);
+
+ /* (A) Class (Function Block) declaration... */
+ /* (A.1) Class (Function Block) name */
+ s4o.print("// PROGRAM\n");
+ s4o.print(s4o.indent_spaces + "class ");
+ symbol->program_type_name->accept(*this);
+ s4o.print(" {\n");
+ s4o.indent_right();
+
+ /* (A.2) Public variables: i.e. the program parameters... */
+ s4o.print(s4o.indent_spaces + "public:\n");
+ s4o.indent_right();
+ vardecl = new generate_cc_vardecl_c(&s4o,
+ generate_cc_vardecl_c::local_vf,
+ generate_cc_vardecl_c::input_vt |
+ generate_cc_vardecl_c::output_vt |
+ generate_cc_vardecl_c::inoutput_vt);
+ vardecl->print(symbol->var_declarations);
+ delete vardecl;
+ s4o.indent_left();
+ s4o.print("\n");
+
+ /* (A.3) Private internal variables */
+ s4o.print(s4o.indent_spaces + "private:\n");
+ s4o.indent_right();
+ vardecl = new generate_cc_vardecl_c(&s4o,
+ generate_cc_vardecl_c::local_vf,
+ generate_cc_vardecl_c::private_vt |
+ generate_cc_vardecl_c::located_vt |
+ generate_cc_vardecl_c::external_vt);
+ vardecl->print(symbol->var_declarations);
+ delete vardecl;
+ s4o.indent_left();
+ s4o.print("\n");
+
+ /* (B) Constructor */
+ /* (B.1) Constructor name... */
+ s4o.print(s4o.indent_spaces + "public:\n");
+ s4o.indent_right();
+ s4o.print(s4o.indent_spaces);
+ symbol->program_type_name->accept(*this);
+
+ /* (B.2) Constructor parameters (i.e. the external variables)... */
+ s4o.print("(");
+ s4o.indent_right();
+ vardecl = new generate_cc_vardecl_c(&s4o,
+ generate_cc_vardecl_c::finterface_vf,
+ generate_cc_vardecl_c::external_vt);
+ vardecl->print(symbol->var_declarations);
+ delete vardecl;
+ s4o.print(")\n");
+ s4o.indent_left();
+
+ /* (B.2) Member initializations... */
+ s4o.indent_right();
+ s4o.print(s4o.indent_spaces);
+ vardecl = new generate_cc_vardecl_c(&s4o,
+ generate_cc_vardecl_c::constructorinit_vf,
+ generate_cc_vardecl_c::input_vt |
+ generate_cc_vardecl_c::output_vt |
+ generate_cc_vardecl_c::inoutput_vt |
+ generate_cc_vardecl_c::private_vt |
+ generate_cc_vardecl_c::external_vt);
+ vardecl->print(symbol->var_declarations);
+ delete vardecl;
+ s4o.print("\n" + s4o.indent_spaces + "{}\n\n");
+ s4o.indent_left();
+ s4o.indent_left();
+
+ /* (C) Public Function*/
+ /* (C.1) Public Function declaration */
+ s4o.print(s4o.indent_spaces + "public:\n");
+ s4o.indent_right();
+ s4o.print(s4o.indent_spaces + "void f(void) {\n");
+
+ /* (C.2) Temporary variables */
+ s4o.indent_right();
+ vardecl = new generate_cc_vardecl_c(&s4o, generate_cc_vardecl_c::localinit_vf, generate_cc_vardecl_c::temp_vt);
+ vardecl->print(symbol->var_declarations);
+ delete vardecl;
+ s4o.indent_left();
+ s4o.print("\n");
+
+ /* (C.3) Public Function body */
+ s4o.indent_right();
+ generate_cc_IL_and_ST_c generate_cc_code(&s4o, symbol);
+ symbol->function_block_body->accept(generate_cc_code);
+ s4o.indent_left();
+ s4o.print(s4o.indent_spaces + "} /* f() */\n\n");
+ s4o.indent_left();
+
+ /* (D) Close the class declaration... */
+ s4o.indent_left();
+ s4o.print(s4o.indent_spaces + "}; /* class ");
+ symbol->program_type_name->accept(*this);
+ s4o.print(" */\n\n\n");
+
+ /* (E) Initialise the static member variables... */
+ vardecl = new generate_cc_vardecl_c(&s4o,
+ generate_cc_vardecl_c::globalinit_vf,
+ generate_cc_vardecl_c::located_vt);
+ vardecl->print(symbol->var_declarations, symbol->program_type_name);
+ delete vardecl;
+ s4o.print("\n\n\n\n");
+
+ return NULL;
+}
+
+
+/* intermediate helper symbol for program_declaration_c */
+/* { io_var_declarations | other_var_declarations } */
+/*
+ * NOTE: we re-use the var_declarations_list_c
+ */
+
+/*********************************************/
+/* B.1.6 Sequential function chart elements */
+/*********************************************/
+
+/********************************/
+/* B 1.7 Configuration elements */
+/********************************/
+
+
+public:
+/*
+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)
+*/
+void *visit(configuration_declaration_c *symbol) {
+ static int configuration_count = 0;
+ generate_cc_vardecl_c *vardecl;
+ TRACE("configuration_declaration_c");
+
+ configuration_count++;
+ if (configuration_count == 1) {
+ /* the first configuration is the one we will use!! */
+ s4o.print("#define __configuration_c ");
+ symbol->configuration_name->accept(*this);
+ s4o.print("\n" + s4o.indent_spaces);
+ }
+
+ /* (A) Class (__configuration) declaration... */
+ /* (A.1) configuration name in comment */
+ s4o.print("// CONFIGURATION\n" + s4o.indent_spaces);
+ s4o.print("class ");
+ symbol->configuration_name->accept(*this);
+ s4o.print(" {\n");
+ s4o.indent_right();
+
+ /* (A.2) Global variables
+ * AND
+ * (A.3) Programs in the Configuration
+ */
+ /* Programs types are mapped onto classes,
+ * and programs are then instantiated inside the configuration
+ * as objects of the appropriate class!
+ */
+ s4o.print(s4o.indent_spaces + "private:\n");
+ s4o.indent_right();
+ vardecl = new generate_cc_vardecl_c(&s4o,
+ generate_cc_vardecl_c::local_vf,
+ generate_cc_vardecl_c::global_vt |
+ generate_cc_vardecl_c::program_vt |
+ generate_cc_vardecl_c::resource_vt);
+ vardecl->print(symbol);
+ delete vardecl;
+ s4o.indent_left();
+ s4o.print("\n");
+
+
+
+ /* (B) Constructor */
+ /* (B.1) Constructor name... */
+ s4o.print(s4o.indent_spaces + "public:\n");
+ s4o.indent_right();
+ s4o.print(s4o.indent_spaces);
+ symbol->configuration_name->accept(*this);
+ s4o.print("(void)\n");
+
+ /* (B.2) Member initializations... */
+ s4o.indent_right();
+ s4o.print(s4o.indent_spaces);
+ vardecl = new generate_cc_vardecl_c(&s4o,
+ generate_cc_vardecl_c::constructorinit_vf,
+ generate_cc_vardecl_c::program_vt |
+ generate_cc_vardecl_c::global_vt |
+ generate_cc_vardecl_c::resource_vt);
+ vardecl->print(symbol);
+ delete vardecl;
+
+ /* (B.3) Constructor Body... */
+ s4o.print("\n" + s4o.indent_spaces + "{}\n\n");
+ s4o.indent_left();
+ s4o.indent_left();
+
+ /* (C) Public Function*/
+ /* (C.1) Public Function declaration */
+ s4o.print(s4o.indent_spaces + "public:\n");
+ s4o.indent_right();
+ s4o.print(s4o.indent_spaces + "void run(void) {\n");
+
+ /* (C.2) Public Function body */
+ /* Invoke each program in the configuration */
+ s4o.indent_right();
+ generate_cc_configbody_c *configbody = new generate_cc_configbody_c(&s4o);
+ symbol->accept(*configbody);
+ delete configbody;
+ s4o.indent_left();
+
+ /* (C.3) Close Public Function body */
+ s4o.print(s4o.indent_spaces + "} /* f() */\n\n");
+ s4o.indent_left();
+
+ /* (D) Close the class declaration... */
+ s4o.indent_left();
+ s4o.print(s4o.indent_spaces + "}; /* class ");
+ symbol->configuration_name->accept(*this);
+ s4o.print(" */\n\n\n");
+
+ return NULL;
+}
+
+
+
+
+
+
+
+#if 0
+
+/* 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)
+
+/* prog_conf_elements ',' prog_conf_element */
+SYM_LIST(prog_conf_elements_c)
+
+/* 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)
+
+/* any_symbolic_variable SENDTO data_sink */
+SYM_REF2(prog_cnxn_sendto_c, symbolic_variable, prog_data_source)
+
+/* VAR_CONFIG instance_specific_init_list END_VAR_BOGUS */
+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)
+
+#endif
+
+
+}; /* generate_cc_c */
+
+
+
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+/***********************************************************************/
+
+
+
+
+visitor_c *new_code_generator(stage4out_c *s4o) {return new generate_cc_c(s4o);}
+void delete_code_generator(visitor_c *code_generator) {delete code_generator;}
+
+