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Using strategy instead of BiMap

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This commit is contained in:
Andrey Breslav
2014-05-29 21:13:48 +04:00
parent a0d8cefe16
commit b022395cb8
2 changed files with 22 additions and 17 deletions
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core/descriptors/src/org/jetbrains/jet/lang/resolve/OverridingUtil.java
+17 -4
View File
@@ -114,18 +114,31 @@ public class OverridingUtil {
return OverrideCompatibilityInfo.valueParameterTypeMismatch(null, null, OverrideCompatibilityInfo.Result.CONFLICT);
}
BiMap<TypeConstructor, TypeConstructor> axioms = HashBiMap.create();
final Map<TypeConstructor, TypeConstructor> matchingTypeConstructors = new HashMap<TypeConstructor, TypeConstructor>();
for (int i = 0, typeParametersSize = superTypeParameters.size(); i < typeParametersSize; i++) {
TypeParameterDescriptor superTypeParameter = superTypeParameters.get(i);
TypeParameterDescriptor subTypeParameter = subTypeParameters.get(i);
axioms.put(superTypeParameter.getTypeConstructor(), subTypeParameter.getTypeConstructor());
matchingTypeConstructors.put(superTypeParameter.getTypeConstructor(), subTypeParameter.getTypeConstructor());
}
JetTypeChecker.TypeConstructorEquality equalityAxioms = new JetTypeChecker.TypeConstructorEquality() {
@Override
public boolean equals(@NotNull TypeConstructor a, @NotNull TypeConstructor b) {
TypeConstructor img1 = matchingTypeConstructors.get(a);
TypeConstructor img2 = matchingTypeConstructors.get(b);
if (!(img1 != null && img1.equals(b)) &&
!(img2 != null && img2.equals(a))) {
return false;
}
return true;
}
};
for (int i = 0, typeParametersSize = superTypeParameters.size(); i < typeParametersSize; i++) {
TypeParameterDescriptor superTypeParameter = superTypeParameters.get(i);
TypeParameterDescriptor subTypeParameter = subTypeParameters.get(i);
if (!JetTypeChecker.INSTANCE.equalTypes(superTypeParameter.getUpperBoundsAsType(), subTypeParameter.getUpperBoundsAsType(), axioms)) {
if (!JetTypeChecker.INSTANCE.equalTypes(superTypeParameter.getUpperBoundsAsType(), subTypeParameter.getUpperBoundsAsType(), equalityAxioms)) {
return OverrideCompatibilityInfo.boundsMismatch(superTypeParameter, subTypeParameter);
}
}
@@ -135,7 +148,7 @@ public class OverridingUtil {
JetType subValueParameter = subValueParameters.get(i);
boolean bothErrors = superValueParameter.isError() && subValueParameter.isError();
if (!bothErrors && !JetTypeChecker.INSTANCE.equalTypes(superValueParameter, subValueParameter, axioms)) {
if (!bothErrors && !JetTypeChecker.INSTANCE.equalTypes(superValueParameter, subValueParameter, equalityAxioms)) {
return OverrideCompatibilityInfo.valueParameterTypeMismatch(superValueParameter, subValueParameter, OverrideCompatibilityInfo.Result.INCOMPATIBLE);
}
}
core/descriptors/src/org/jetbrains/jet/lang/types/checker/JetTypeChecker.java
+5 -13
View File
@@ -16,8 +16,6 @@
package org.jetbrains.jet.lang.types.checker;
import com.google.common.collect.BiMap;
import com.google.common.collect.HashBiMap;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.jet.lang.types.JetType;
import org.jetbrains.jet.lang.types.TypeConstructor;
@@ -25,7 +23,9 @@ import org.jetbrains.jet.lang.types.TypeConstructor;
public class JetTypeChecker {
public static final JetTypeChecker INSTANCE = new JetTypeChecker();
public static final HashBiMap<TypeConstructor, TypeConstructor> EMPTY_AXIOMS = HashBiMap.create();
public interface TypeConstructorEquality {
boolean equals(@NotNull TypeConstructor a, @NotNull TypeConstructor b);
}
private JetTypeChecker() {
}
@@ -39,19 +39,11 @@ public class JetTypeChecker {
return TYPE_CHECKER.equalTypes(a, b);
}
public boolean equalTypes(@NotNull JetType a, @NotNull JetType b, @NotNull final BiMap<TypeConstructor, TypeConstructor> equalityAxioms) {
public boolean equalTypes(@NotNull JetType a, @NotNull JetType b, @NotNull final TypeConstructorEquality equalityAxioms) {
return new TypeCheckingProcedure(new TypeCheckerTypingConstraints() {
@Override
public boolean assertEqualTypeConstructors(@NotNull TypeConstructor constructor1, @NotNull TypeConstructor constructor2) {
if (!constructor1.equals(constructor2)) {
TypeConstructor img1 = equalityAxioms.get(constructor1);
TypeConstructor img2 = equalityAxioms.get(constructor2);
if (!(img1 != null && img1.equals(constructor2)) &&
!(img2 != null && img2.equals(constructor1))) {
return false;
}
}
return true;
return constructor1.equals(constructor2) || equalityAxioms.equals(constructor1, constructor2);
}
}).equalTypes(a, b);
}