2013-10-18 11:33:46 +00:00
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// ino.module.IfStmt.8632.package
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2014-09-02 08:33:54 +00:00
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package de.dhbwstuttgart.syntaxtree.statement;
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2013-10-18 11:33:46 +00:00
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// ino.end
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// ino.module.IfStmt.8632.import
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import java.util.Enumeration;
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import java.util.Hashtable;
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import java.util.Iterator;
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2014-02-09 15:07:31 +00:00
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2016-07-21 14:36:33 +00:00
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import org.apache.bcel.Constants;
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import org.apache.bcel.generic.ALOAD;
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import org.apache.bcel.generic.ASTORE;
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import org.apache.bcel.generic.BranchInstruction;
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import org.apache.bcel.generic.ClassGen;
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import org.apache.bcel.generic.GOTO;
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import org.apache.bcel.generic.GotoInstruction;
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import org.apache.bcel.generic.IFEQ;
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import org.apache.bcel.generic.IFNONNULL;
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import org.apache.bcel.generic.IfInstruction;
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import org.apache.bcel.generic.Instruction;
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import org.apache.bcel.generic.InstructionFactory;
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import org.apache.bcel.generic.InstructionHandle;
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import org.apache.bcel.generic.InstructionList;
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import org.apache.bcel.generic.NOP;
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2014-09-08 13:12:47 +00:00
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2015-06-16 12:58:27 +00:00
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import de.dhbwstuttgart.typeinference.Menge;
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2015-10-13 17:25:51 +00:00
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import de.dhbwstuttgart.bytecode.ClassGenerator;
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2015-06-16 12:58:27 +00:00
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import de.dhbwstuttgart.logger.Logger;
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2015-10-13 17:25:51 +00:00
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import de.dhbwstuttgart.logger.Section;
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2014-09-02 08:33:54 +00:00
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import de.dhbwstuttgart.syntaxtree.Class;
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2014-09-04 14:35:44 +00:00
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import de.dhbwstuttgart.syntaxtree.SyntaxTreeNode;
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2014-09-02 08:33:54 +00:00
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import de.dhbwstuttgart.syntaxtree.operator.LogOp;
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import de.dhbwstuttgart.syntaxtree.operator.Operator;
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import de.dhbwstuttgart.syntaxtree.operator.RelOp;
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import de.dhbwstuttgart.syntaxtree.type.GenericTypeVar;
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import de.dhbwstuttgart.syntaxtree.type.RefType;
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import de.dhbwstuttgart.syntaxtree.type.Type;
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import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
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import de.dhbwstuttgart.syntaxtree.type.Void;
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import de.dhbwstuttgart.typeinference.ConstraintsSet;
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import de.dhbwstuttgart.typeinference.JavaCodeResult;
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2014-09-08 13:12:47 +00:00
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import de.dhbwstuttgart.typeinference.Pair;
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2014-09-02 08:33:54 +00:00
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import de.dhbwstuttgart.typeinference.ResultSet;
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2015-11-27 15:10:35 +00:00
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import de.dhbwstuttgart.typeinference.TypeinferenceResultSet;
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2014-09-02 08:33:54 +00:00
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import de.dhbwstuttgart.typeinference.assumptions.TypeAssumptions;
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2014-10-07 13:36:18 +00:00
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import de.dhbwstuttgart.typeinference.exceptions.NotImplementedException;
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2016-04-13 16:32:09 +00:00
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import de.dhbwstuttgart.typeinference.unify.TypeUnify;
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2013-10-18 11:33:46 +00:00
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// ino.class.IfStmt.25300.declaration
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public class IfStmt extends Statement
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// ino.end
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// ino.class.IfStmt.25300.body
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{
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// ino.method.IfStmt.25304.definition
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public IfStmt(int offset, int variableLength)
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// ino.end
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// ino.method.IfStmt.25304.body
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{
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super(offset,variableLength);
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}
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// ino.end
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// ino.attribute.hamaDebug.25307.declaration
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public boolean hamaDebug = true; //hama: Debug Ausgaben von mir ein- bzw. ausschalten
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// ino.end
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// ino.attribute.expr.25310.declaration
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public Expr expr;
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// ino.end
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// ino.attribute.then_block.25313.declaration
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public Statement then_block;
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// ino.end
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// ino.attribute.else_block.25316.declaration
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public Statement else_block;
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// ino.end
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// ino.attribute.parserlog.25319.declaration
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protected static Logger parserlog = Logger.getLogger("parser");
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// ino.end
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// ino.method.set_Expr.25322.definition
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public void set_Expr(Expr exp)
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// ino.end
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// ino.method.set_Expr.25322.body
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{
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this.expr = exp;
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}
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// ino.end
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// ino.method.set_Then_block.25325.definition
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public void set_Then_block(Statement blk)
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// ino.end
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// ino.method.set_Then_block.25325.body
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{
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this.then_block = blk;
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}
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// ino.end
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// ino.method.set_Else_block.25328.definition
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public void set_Else_block(Statement blk)
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// ino.end
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// ino.method.set_Else_block.25328.body
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{
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this.else_block = blk;
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}
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// ino.end
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// ino.method.wandleRefTypeAttributes2GenericAttributes.25349.definition
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2015-04-22 19:40:22 +00:00
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public void wandleRefTypeAttributes2GenericAttributes(Menge<Type> paralist, Menge<GenericTypeVar> genericMethodParameters)
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2013-10-18 11:33:46 +00:00
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// ino.end
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// ino.method.wandleRefTypeAttributes2GenericAttributes.25349.body
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{
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if(then_block!=null){
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then_block.wandleRefTypeAttributes2GenericAttributes(paralist,genericMethodParameters);
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}
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if(else_block!=null){
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else_block.wandleRefTypeAttributes2GenericAttributes(paralist,genericMethodParameters);
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}
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}
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// ino.end
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@Override
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public ConstraintsSet TYPEStmt(TypeAssumptions assumptions) {
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ConstraintsSet ret = new ConstraintsSet();
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2014-02-11 15:30:38 +00:00
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this.setType(TypePlaceholder.fresh(this));
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2013-10-18 11:33:46 +00:00
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2015-05-12 17:49:27 +00:00
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ret.add(expr.TYPEExpr(assumptions)); // die Constraints für (expressionDesIfStmt)
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2013-10-18 11:33:46 +00:00
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ret.add(this.then_block.TYPEStmt(assumptions));
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if(else_block!=null){
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ret.add(this.else_block.TYPEStmt(assumptions));
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2016-04-01 14:12:30 +00:00
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if(!(else_block.getType() instanceof Void))ret.add(ConstraintsSet.createSingleConstraint(else_block.getType().TYPE(assumptions, this),this.getType().TYPE(assumptions, this)));
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2013-10-18 11:33:46 +00:00
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}
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2016-04-01 14:12:30 +00:00
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ret.add(ConstraintsSet.createSingleConstraint(expr.getType().TYPE(assumptions, this),new RefType("Boolean",this,0).TYPE(assumptions, this))); //(expressionDesIfStmt)<.boolean
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if(!(then_block.getType() instanceof Void))ret.add(ConstraintsSet.createSingleConstraint(then_block.getType().TYPE(assumptions, this),this.getType().TYPE(assumptions, this)));
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2014-02-11 15:30:38 +00:00
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if(then_block.getType() instanceof Void &&
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2014-09-14 16:38:43 +00:00
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(else_block == null || else_block.getType() instanceof Void))this.setType(new Void(this,this.getOffset()));
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2013-10-18 11:33:46 +00:00
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return ret;
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}
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public int getTypeLineNumber() {
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throw new NotImplementedException();
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}
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@Override
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public JavaCodeResult printJavaCode(ResultSet resultSet) {
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JavaCodeResult ret = new JavaCodeResult("If(").attach(this.expr.printJavaCode(resultSet)).attach("){\n");
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if(this.then_block!=null)ret.attach(this.then_block.printJavaCode(resultSet));
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ret.attach("\n}else{\n");
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if(this.else_block!=null)ret.attach(this.else_block.printJavaCode(resultSet));
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ret.attach("\n}");
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return ret;
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}
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2014-02-19 22:04:48 +00:00
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@Override
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2015-04-22 19:40:22 +00:00
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public Menge<SyntaxTreeNode> getChildren() {
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Menge<SyntaxTreeNode> ret = new Menge<SyntaxTreeNode>();
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2014-02-19 22:04:48 +00:00
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if(this.expr!=null)ret.add(this.expr);
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if(this.else_block!=null)ret.add(this.else_block);
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if(this.then_block!=null)ret.add(this.then_block);
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return ret;
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}
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2015-06-16 12:58:27 +00:00
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@Override
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2015-11-27 15:10:35 +00:00
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public InstructionList genByteCode(ClassGenerator _cg, TypeinferenceResultSet rs) {
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2015-10-15 20:16:18 +00:00
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InstructionFactory _factory = _cg.getInstructionFactory();
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2015-10-13 17:25:51 +00:00
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InstructionList il = new InstructionList();
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IfInstruction ifInstruction = new IFEQ(null);
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2015-11-27 15:10:35 +00:00
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il.append(expr.genByteCode(_cg, rs));
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2015-10-15 14:15:13 +00:00
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//Anmerkung: expr ist vom Typ java.lang.Boolean (per Definition)
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2016-07-21 14:36:33 +00:00
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il.append(_factory.createInvoke("java.lang.Boolean", "booleanValue", org.apache.bcel.generic.Type.BOOLEAN, org.apache.bcel.generic.Type.NO_ARGS, Constants.INVOKEVIRTUAL));
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2015-10-13 17:25:51 +00:00
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il.append(ifInstruction);
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2015-11-27 15:10:35 +00:00
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il.append(then_block.genByteCode(_cg, rs));
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2015-10-13 17:25:51 +00:00
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if(else_block != null && !(else_block instanceof EmptyStmt)){
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2016-02-18 17:28:08 +00:00
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//GotoInstruction gotoInstruction = new GOTO(null);
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//il.append(gotoInstruction);
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2015-11-27 15:10:35 +00:00
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ifInstruction.setTarget(il.append(else_block.genByteCode(_cg, rs)));
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2016-02-18 17:28:08 +00:00
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//gotoInstruction.setTarget(il.append(new NOP()));
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2015-10-13 17:25:51 +00:00
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}else{
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ifInstruction.setTarget(il.append(new NOP()));
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}
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2015-06-16 12:58:27 +00:00
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2015-10-13 17:25:51 +00:00
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return il;
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2015-06-16 12:58:27 +00:00
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}
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2013-10-18 11:33:46 +00:00
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}
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// ino.end
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