--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/stage1_2/create_enumtype_conversion_functions.cc Tue Nov 20 00:01:57 2012 +0100
@@ -0,0 +1,309 @@
+/*
+ * matiec - a compiler for the programming languages defined in IEC 61131-3
+ *
+ * Copyright (C) 2009-2012 Mario de Sousa (msousa@fe.up.pt)
+ * Copyright (C) 2012 Manuele Conti (conti.ma@alice.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 <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)
+ *
+ */
+
+#include <sstream>
+#include "create_enumtype_conversion_functions.hh"
+
+/* set to 1 to see debug info during execution */
+static const int debug = 0;
+
+/*
+ * functionDataType array contains all supported data type conversion.
+ */
+const char *create_enumtype_conversion_functions_c::functionDataType[] = {
+ "STRING",
+ "SINT" ,
+ "INT" ,
+ "DINT" ,
+ "LINT" ,
+ "USINT" ,
+ "UNIT" ,
+ "UDINT" ,
+ "ULINT" ,
+ NULL
+};
+
+create_enumtype_conversion_functions_c::create_enumtype_conversion_functions_c(symbol_c *ignore) {
+
+}
+
+create_enumtype_conversion_functions_c::~create_enumtype_conversion_functions_c(void) {
+
+}
+
+std::string &create_enumtype_conversion_functions_c::get_declaration(symbol_c *root) {
+ text = "";
+ if (NULL != root) {
+ root->accept(*this);
+ }
+
+ return text;
+}
+
+void *create_enumtype_conversion_functions_c::visit(identifier_c *symbol) {
+ currentToken = symbol->value;
+
+ return NULL;
+}
+
+/**********************/
+/* B 1.3 - Data types */
+/**********************/
+/********************************/
+/* B 1.3.3 - Derived data types */
+/********************************/
+void *create_enumtype_conversion_functions_c::visit(enumerated_type_declaration_c *symbol) {
+ std::string enumerateName;
+ std::string functionName;
+ std::list <std::string> enumerateValues;
+
+ symbol->enumerated_type_name->accept(*this);
+ enumerateName = currentToken;
+
+ symbol->enumerated_spec_init->accept(*this);
+ enumerateValues = currentTokenList;
+
+ printStringToEnum (enumerateName, enumerateValues);
+ printEnumToString (enumerateName, enumerateValues);
+ for (size_t s = 8; s <= 64; s*= 2) {
+ printIntegerToEnum (enumerateName, enumerateValues, true , s);
+ printEnumToInteger (enumerateName, enumerateValues, true , s);
+ printIntegerToEnum (enumerateName, enumerateValues, false, s);
+ printEnumToInteger (enumerateName, enumerateValues, false, s);
+ }
+ if (debug) std::cout << text << std::endl;
+
+ return NULL;
+}
+
+void *create_enumtype_conversion_functions_c::visit(enumerated_value_list_c *symbol) {
+ list_c *list;
+
+ currentTokenList.clear();
+ list = (list_c *)symbol;
+ for (int i = 0; i < list->n; i++) {
+ list->elements[i]->accept(*this);
+ currentTokenList.push_back(currentToken);
+ }
+
+ return NULL;
+}
+
+/*
+ * getIntegerName function generate a integer data name from signed and size.
+ */
+std::string create_enumtype_conversion_functions_c::getIntegerName(bool isSigned, size_t size) {
+ std::string integerType = "";
+ if (! isSigned) {
+ integerType = "U";
+ }
+ switch(size) {
+ case 8 : integerType += "S"; break;
+ case 16: break;
+ case 32: integerType += "D"; break;
+ case 64: integerType += "L"; break;
+ default: break;
+ }
+ integerType +="INT";
+
+ return integerType;
+}
+
+/*
+ * printStringToEnum function print conversion function from STRING to <ENUM>:
+ * ST Output:
+ *
+
+ FUNCTION STRING_TO_<ENUM> : <ENUM>
+ VAR_INPUT
+ IN: STRING;
+ END_VAR
+ IF IN = '<ENUM.VALUE_1>' THEN
+ STRING_TO_<ENUM> := <ENUM.VALUE_1>;
+ RETURN;
+ END_IF;
+ ...
+ IF IN = '<ENUM.VALU_N>' THEN
+ STRING_TO_<ENUM> := <ENUM.VALUE_N>;
+ RETURN;
+ END_IF;
+ END_FUNCTION
+
+ */
+void create_enumtype_conversion_functions_c::printStringToEnum (std::string &enumerateName, std::list<std::string> &enumerateValues) {
+ std::list <std::string>::const_iterator itr;
+ std::string functionName;
+
+ functionName = "STRING_TO_" + enumerateName;
+ text += "FUNCTION " + functionName + " : " + enumerateName;
+ text += "\nVAR_INPUT\nIN : STRING;\nEND_VAR\n";
+ for (itr = enumerateValues.begin(); itr != enumerateValues.end(); ++itr) {
+ std::string value = *itr;
+ text += "IF IN = '" + value + "' THEN\n";
+ text += " " + functionName + " := " + value + ";\n";
+ text += " RETURN;\n";
+ text += "END_IF;\n";
+ }
+ text += "END_FUNCTION\n\n";
+}
+
+/*
+ * printEnumToString function print conversion function from <ENUM> to STRING:
+ * ST Output:
+ *
+
+ FUNCTION <ENUM>_TO_STRING : STRING
+ VAR_INPUT
+ IN: <ENUM>;
+ END_VAR
+ IF IN = <ENUM.VALUE_1> THEN
+ <ENUM>_TO_STRING := '<ENUM.VALUE_1>';
+ RETURN;
+ END_IF;
+ ...
+ IF IN = <ENUM.VALUE_N> THEN
+ <ENUM>_TO_STRING := '<ENUM.VALUE_N>';
+ RETURN;
+ END_IF;
+ END_FUNCTION
+
+ */
+void create_enumtype_conversion_functions_c::printEnumToString (std::string &enumerateName, std::list<std::string> &enumerateValues) {
+ std::list <std::string>::const_iterator itr;
+ std::string functionName;
+
+ functionName = enumerateName + "_TO_STRING";
+ text += "FUNCTION " + functionName + " : STRING";
+ text += "\nVAR_INPUT\nIN : " + enumerateName + ";\nEND_VAR\n";
+ for (itr = enumerateValues.begin(); itr != enumerateValues.end(); ++itr) {
+ std::string value = *itr;
+ text += "IF IN = " + value + " THEN\n";
+ text += " " + functionName + " := '" + value + "';\n";
+ text += " RETURN;\n";
+ text += "END_IF;\n";
+ }
+ text += "END_FUNCTION\n\n";
+}
+
+/*
+ * printIntegerToEnum function print conversion function from <INTEGER> to <ENUM>:
+ * ST Output:
+ *
+
+ FUNCTION <INTEGER>_TO_<ENUM> : <ENUM>
+ VAR_INPUT
+ IN: <INTEGER>;
+ END_VAR
+ IF IN = 1 THEN
+ <INTEGER>_TO_<ENUM> := <ENUM.VALUE_1>;
+ RETURN;
+ END_IF;
+ ...
+ IF IN = N THEN
+ <INTEGER>_TO_<ENUM> := <ENUM.VALUE_N>;
+ RETURN;
+ END_IF;
+ END_FUNCTION
+
+ */
+void create_enumtype_conversion_functions_c::printIntegerToEnum (std::string &enumerateName, std::list<std::string> &enumerateValues, bool isSigned, size_t size) {
+ std::list <std::string>::const_iterator itr;
+ std::string functionName;
+ std::string integerType;
+ int count;
+
+ integerType = getIntegerName(isSigned, size);
+ functionName = integerType + "_TO_" + enumerateName;
+ text += "FUNCTION " + functionName + " : " + enumerateName;
+ text += "\nVAR_INPUT\nIN : " + integerType + ";\nEND_VAR\n";
+ count = 0;
+ for (itr = enumerateValues.begin(); itr != enumerateValues.end(); ++itr) {
+ std::string value = *itr;
+ std::stringstream out;
+ out << count;
+ text += "IF IN = " + out.str() + " THEN\n";
+ text += " " + functionName + " := " + value + ";\n";
+ text += " RETURN;\n";
+ text += "END_IF;\n";
+ count++;
+ }
+ text += "END_FUNCTION\n\n";
+}
+
+/*
+ * printEnumToInteger function print conversion function from <ENUM> to <INTEGER>:
+ * ST Output:
+ *
+
+ FUNCTION <ENUM>_TO_<INTEGER> : <INTEGER>
+ VAR_INPUT
+ IN: <INTEGER>;
+ END_VAR
+ IF IN = <ENUM.VALUE_1> THEN
+ <ENUM>_TO_<INTEGER> := 1;
+ RETURN;
+ END_IF;
+ ...
+ IF IN = <ENUM.VALUE_N> THEN
+ <ENUM>_TO_<INTEGER> := N;
+ RETURN;
+ END_IF;
+ END_FUNCTION
+
+ */
+void create_enumtype_conversion_functions_c::printEnumToInteger (std::string &enumerateName, std::list<std::string> &enumerateValues, bool isSigned, size_t size) {
+ std::list <std::string>::const_iterator itr;
+ std::string functionName;
+ std::string integerType;
+ int count;
+
+ integerType = getIntegerName(isSigned, size);
+ functionName = enumerateName + "_TO_" + integerType;
+ text += "FUNCTION " + functionName + " : " + integerType;
+ text += "\nVAR_INPUT\nIN : " + enumerateName + ";\nEND_VAR\n";
+ count = 0;
+ for (itr = enumerateValues.begin(); itr != enumerateValues.end(); ++itr) {
+ std::string value = *itr;
+ std::stringstream out;
+ out << count;
+ text += "IF IN = " + value + " THEN\n";
+ text += " " + functionName + " := " + out.str() + ";\n";
+ text += " RETURN;\n";
+ text += "END_IF;\n";
+ count++;
+ }
+ text += "END_FUNCTION\n\n";
+}
+
+
+