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authortpearson <tpearson@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2010-02-24 01:49:02 +0000
committertpearson <tpearson@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2010-02-24 01:49:02 +0000
commit5de3dd4762ca33a0f92e79ffa4fe2ff67069d531 (patch)
treebad482b7afa4cdf47422d60a5dd2c61c7e333b09 /src/flowparts/varcomparison.cpp
downloadktechlab-5de3dd4762ca33a0f92e79ffa4fe2ff67069d531.tar.gz
ktechlab-5de3dd4762ca33a0f92e79ffa4fe2ff67069d531.zip
Added KDE3 version of ktechlab
git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/ktechlab@1095338 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
Diffstat (limited to 'src/flowparts/varcomparison.cpp')
-rw-r--r--src/flowparts/varcomparison.cpp170
1 files changed, 170 insertions, 0 deletions
diff --git a/src/flowparts/varcomparison.cpp b/src/flowparts/varcomparison.cpp
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+/***************************************************************************
+ * Copyright (C) 2003 by David Saxton *
+ * david@bluehaze.org *
+ * *
+ * 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 2 of the License, or *
+ * (at your option) any later version. *
+ ***************************************************************************/
+
+#include "varcomparison.h"
+
+#include "libraryitem.h"
+#include "flowcode.h"
+
+#include <klocale.h>
+
+Item* VarComparison::construct( ItemDocument *itemDocument, bool newItem, const char *id )
+{
+ return new VarComparison( (ICNDocument*)itemDocument, newItem, id );
+}
+
+LibraryItem* VarComparison::libraryItem()
+{
+ return new LibraryItem(
+ QString("flow/varcomparison"),
+ i18n("Comparison"),
+ i18n("Variables"),
+ "branch.png",
+ LibraryItem::lit_flowpart,
+ VarComparison::construct );
+}
+
+VarComparison::VarComparison( ICNDocument *icnDocument, bool newItem, const char *id )
+ : FlowPart( icnDocument, newItem, (id) ? id : "varcomparison" )
+{
+ m_name = i18n("Variable Comparison");
+ m_desc = i18n("Conditional branch point, depending on the comparison of two values. The supported comparisons are:<ul><li><b>x == y</b> - Equality: true if x has the same value as y.</li><li><b>x &lt; y</b> - Less than: true if x is smaller than y.</li><li><b>x &gt; y</b> - Greater than: true if x is bigger than y.</li><li><b>x &lt;= y</b> - Less than or equal: true if x is less than or equal to y.</li><li><b>x &gt;= y</b> - Greater than or equal: true if x is greater than or equal to y.</li><li><b>x != y</b> - Does not equal: true if x does not have the same value as y.</li></ul>");
+ initDecisionSymbol();
+ createStdInput();
+ createStdOutput();
+ createAltOutput();
+
+ createProperty( "0var1", Variant::Type::Combo );
+ property("0var1")->setCaption( i18n("Variable") );
+ property("0var1")->setValue("x");
+
+ createProperty( "1op", Variant::Type::Select );
+ property("1op")->setAllowed( QStringList::split( ',', "==,<,>,<=,>=,!=" ) );
+ property("1op")->setValue("==");
+ property("1op")->setToolbarCaption(" ");
+ property("1op")->setEditorCaption( i18n("Operation") );
+
+ createProperty( "2var2", Variant::Type::Combo );
+ property("2var2")->setToolbarCaption(" ");
+ property("2var2")->setEditorCaption( i18n("Value") );
+ property("2var2")->setValue("0");
+
+ addDisplayText( "output_false", QRect( offsetX()+width(), 2, 40, 20 ), "No" );
+ addDisplayText( "output_true", QRect( 0, offsetY()+height(), 50, 20 ), "Yes" );
+}
+
+VarComparison::~VarComparison()
+{
+}
+
+void VarComparison::dataChanged()
+{
+ setCaption( dataString("0var1") + " " + dataString("1op") + " " + dataString("2var2") + " ?" );
+}
+
+QString VarComparison::oppOp( const QString &op )
+{
+ if ( op == "==" ) return "!=";
+ if ( op == "!=" ) return "==";
+ else if ( op == "<" ) return ">=";
+ else if ( op == ">=" ) return "<";
+ else if ( op == ">" ) return "<=";
+ else if ( op == "<=" ) return ">";
+ else return "__UNKNOWN_OP__";
+}
+
+void VarComparison::generateMicrobe( FlowCode *code )
+{
+ QString var1 = dataString("0var1");
+ QString var2 = dataString("2var2");
+ QString test = dataString("1op");
+
+ handleIfElse( code, var1+" "+test+" "+var2, var1+" "+oppOp(test)+" "+var2, "stdoutput", "altoutput" );
+
+#if 0
+ code->addCode( "if "+var1+" "+test+" "+var2+"\n{\n" );
+ code->addCodeBranch( outputPart("stdoutput") );
+ code->addCode("}");
+ if ( outputPart("altoutput") )
+ {
+ code->addCode("else\n{");
+ code->addCodeBranch( outputPart("altoutput") );
+ code->addCode("}");
+ }
+#endif
+
+#if 0
+ QString newCode;
+
+ if ( FlowCode::isLiteral(var2) ) newCode += "movlw " + var2 + " ; Move literal to register w\n";
+ else
+ {
+ code->addVariable(var2);
+ newCode += "movf " + var2 + ",0 ; Move " + var2 + " to register w\n";
+ }
+
+ if ( FlowCode::isLiteral(var1) ) newCode += "sublw " + var1 + " ; Subtract register w from " + var1 + ", placing result in w\n";
+ else
+ {
+ code->addVariable(var1);
+ newCode += "subwf " + var1 + ",0 ; Subtract register w from " + var1 + ", placing result in w\n";
+ }
+
+
+ if ( test == "==" )
+ {
+ // check: works
+ newCode += "btfss STATUS,2 ; Check if zero flag is set\n";
+ newCode += gotoCode("altoutput") + " ; Result from calculation was non-zero; hence comparison is false\n";
+ newCode += gotoCode("stdoutput") + " ; Ouput was zero; hence comparison is true, so continue from this point\n";
+ }
+ else if ( test == "!=" )
+ {
+ // check: works
+ newCode += "btfsc STATUS,2 ; Check if zero flag is clear\n";
+ newCode += gotoCode("altoutput") + " ; Result from calculation was zero; hence comparison is false\n";
+ newCode += gotoCode("stdoutput") + " ; Output was non-zero; hence comparison is true, so continue from this point\n";
+ }
+ else if ( test == ">=" )
+ {
+ // check: works
+ newCode += "btfss STATUS,0 ; Check if carry flag is set\n";
+ newCode += gotoCode("altoutput") + " ; Result from calculation is negative; hence comparison is false\n";
+ newCode += gotoCode("stdoutput") + " ; Result from calculation is positive or zero; so continue from this point\n";
+ }
+ else if ( test == ">" )
+ {
+ // check: works
+ newCode += "btfss STATUS,0 ; Check if carry flag is set\n";
+ newCode += gotoCode("altoutput") + " ; Result is negative; hence comparison is false\n";
+ newCode += "btfsc STATUS,2 ; Check if zero flag is set\n";
+ newCode += gotoCode("altoutput") + " ; Result is zero; hence comparison is false\n";
+ newCode += gotoCode("stdoutput") + " ; Comparison is true, so continue from this point\n";
+ }
+ else if ( test == "<" )
+ {
+ // check: works
+ newCode += "btfsc STATUS,0 ; Check if carry flag is set\n";
+ newCode += gotoCode("altoutput");
+ newCode += gotoCode("stdoutput");
+ }
+ else if ( test == "<=" )
+ {
+ // check: works
+ newCode += "btfsc STATUS,2 ; Check if result is zero\n";
+ newCode += gotoCode("stdoutput") + " ; Result is zero; hence comparison is true\n";
+ newCode += "btfsc STATUS,0 ; Check if carry flag is set\n";
+ newCode += gotoCode("altoutput") + " ; Result is positive (not zero, has already tested for this); hence comparison is false\n";
+ newCode += gotoCode("stdoutput") + " ; Result is negative, hence comparison is true\n";
+ }
+
+ code->addCodeBlock( id(), newCode );
+#endif
+}