| 1 | package de.uka.ipd.sdq.stoex.analyser.visitors; |
| 2 | |
| 3 | import java.util.ArrayList; |
| 4 | import java.util.Collection; |
| 5 | |
| 6 | import de.uka.ipd.sdq.errorhandling.IIssue; |
| 7 | import de.uka.ipd.sdq.stoex.BooleanOperatorExpression; |
| 8 | import de.uka.ipd.sdq.stoex.IfElseExpression; |
| 9 | import de.uka.ipd.sdq.stoex.NotExpression; |
| 10 | import de.uka.ipd.sdq.stoex.ProductExpression; |
| 11 | import de.uka.ipd.sdq.stoex.TermExpression; |
| 12 | import de.uka.ipd.sdq.stoex.analyser.exceptions.ExpectedTypeMismatchIssue; |
| 13 | import de.uka.ipd.sdq.stoex.util.StoexSwitch; |
| 14 | |
| 15 | public class TypeCheckVisitor extends StoexSwitch<Object> { |
| 16 | |
| 17 | private ExpressionInferTypeVisitor typeVisitor; |
| 18 | private ArrayList<IIssue> issues = new ArrayList<IIssue>(); |
| 19 | |
| 20 | public TypeCheckVisitor(NonProbabilisticExpressionInferTypeVisitor typeVisitor) { |
| 21 | this.typeVisitor = typeVisitor; |
| 22 | } |
| 23 | |
| 24 | @Override |
| 25 | public Object caseBooleanOperatorExpression(BooleanOperatorExpression object) { |
| 26 | if (!typesCompatible(typeVisitor.getType(object.getLeft()),TypeEnum.BOOL)) |
| 27 | issues.add(new ExpectedTypeMismatchIssue(TypeEnum.BOOL,typeVisitor.getType(object.getLeft()))); |
| 28 | if (!typesCompatible(typeVisitor.getType(object.getRight()),TypeEnum.BOOL)) |
| 29 | issues.add(new ExpectedTypeMismatchIssue(TypeEnum.BOOL,typeVisitor.getType(object.getRight()))); |
| 30 | return super.caseBooleanOperatorExpression(object); |
| 31 | } |
| 32 | |
| 33 | @Override |
| 34 | public Object caseIfElseExpression(IfElseExpression object) { |
| 35 | if (!typesCompatible(typeVisitor.getType(object.getConditionExpression()),TypeEnum.BOOL)) |
| 36 | issues.add(new ExpectedTypeMismatchIssue(TypeEnum.BOOL,typeVisitor.getType(object.getConditionExpression()))); |
| 37 | return super.caseIfElseExpression(object); |
| 38 | } |
| 39 | |
| 40 | @Override |
| 41 | public Object caseNotExpression(NotExpression object) { |
| 42 | if (!typesCompatible(typeVisitor.getType(object.getInner()),TypeEnum.BOOL)) |
| 43 | issues.add(new ExpectedTypeMismatchIssue(TypeEnum.BOOL,typeVisitor.getType(object.getInner()))); |
| 44 | return super.caseNotExpression(object); |
| 45 | } |
| 46 | |
| 47 | @Override |
| 48 | public Object caseProductExpression(ProductExpression object) { |
| 49 | if (!isNummericType(typeVisitor.getType(object.getLeft()))) |
| 50 | issues.add(new ExpectedTypeMismatchIssue("Numeric",typeVisitor.getType(object.getLeft()))); |
| 51 | if (!isNummericType(typeVisitor.getType(object.getRight()))) |
| 52 | issues.add(new ExpectedTypeMismatchIssue("Numeric",typeVisitor.getType(object.getRight()))); |
| 53 | return super.caseProductExpression(object); |
| 54 | } |
| 55 | |
| 56 | @Override |
| 57 | public Object caseTermExpression(TermExpression object) { |
| 58 | if (!isNummericType(typeVisitor.getType(object.getLeft()))) |
| 59 | issues.add(new ExpectedTypeMismatchIssue("Numeric",typeVisitor.getType(object.getLeft()))); |
| 60 | if (!isNummericType(typeVisitor.getType(object.getRight()))) |
| 61 | issues.add(new ExpectedTypeMismatchIssue("Numeric",typeVisitor.getType(object.getRight()))); |
| 62 | return super.caseTermExpression(object); |
| 63 | } |
| 64 | |
| 65 | public static boolean typesCompatible(TypeEnum expectedType, TypeEnum foundType) { |
| 66 | if (expectedType == TypeEnum.ANY) |
| 67 | return true; |
| 68 | if (expectedType == foundType) |
| 69 | return true; |
| 70 | if (foundType == TypeEnum.ANY) // Can only decide at run time... |
| 71 | return true; |
| 72 | if (expectedType == TypeEnum.DOUBLE && (foundType == TypeEnum.INT || foundType == TypeEnum.DOUBLE)) |
| 73 | return true; |
| 74 | return false; |
| 75 | } |
| 76 | |
| 77 | private boolean isNummericType(TypeEnum type) { |
| 78 | if (type == TypeEnum.INT || |
| 79 | type == TypeEnum.DOUBLE || |
| 80 | type == TypeEnum.ANY) |
| 81 | return true; |
| 82 | return false; |
| 83 | } |
| 84 | |
| 85 | public Collection<IIssue> getIssues() { |
| 86 | return this.issues; |
| 87 | } |
| 88 | |
| 89 | } |