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package org.zwobble.couscous.ast;
import org.zwobble.couscous.ast.visitors.ExpressionNodeMapper;
import org.zwobble.couscous.values.BooleanValue;
import org.zwobble.couscous.values.IntegerValue;
import java.util.Collections;
import java.util.List;
import java.util.function.Function;
import static java.util.Arrays.asList;
import static org.zwobble.couscous.util.ExtraLists.eagerMap;
public class MethodCallNode implements ExpressionNode {
public static ExpressionNode not(ExpressionNode value) {
if (value.getType().equals(BooleanValue.REF)) {
return methodCall(value, "negate", Collections.emptyList(), BooleanValue.REF);
} else {
throw new IllegalArgumentException("Can only negate booleans");
}
}
public static ExpressionNode integerAdd(ExpressionNode left, ExpressionNode right) {
return integerOperation(Operator.ADD.getMethodName(), left, right);
}
public static ExpressionNode integerSubtract(ExpressionNode left, ExpressionNode right) {
return integerOperation(Operator.SUBTRACT.getMethodName(), left, right);
}
public static ExpressionNode integerMultiply(ExpressionNode left, ExpressionNode right) {
return integerOperation(Operator.MULTIPLY.getMethodName(), left, right);
}
public static ExpressionNode integerDivide(ExpressionNode left, ExpressionNode right) {
return integerOperation(Operator.DIVIDE.getMethodName(), left, right);
}
public static ExpressionNode integerMod(ExpressionNode left, ExpressionNode right) {
return integerOperation(Operator.MOD.getMethodName(), left, right);
}
public static MethodCallNode integerOperation(String methodName, ExpressionNode left, ExpressionNode right) {
return methodCall(left, methodName, asList(right), IntegerValue.REF);
}
public static ExpressionNode equal(ExpressionNode left, ExpressionNode right) {
return booleanOperation(Operator.EQUALS.getMethodName(), left, right);
}
public static ExpressionNode notEqual(ExpressionNode left, ExpressionNode right) {
return booleanOperation(Operator.NOT_EQUALS.getMethodName(), left, right);
}
public static ExpressionNode greaterThan(ExpressionNode left, ExpressionNode right) {
return booleanOperation(Operator.GREATER_THAN.getMethodName(), left, right);
}
public static ExpressionNode greaterThanOrEqual(ExpressionNode left, ExpressionNode right) {
return booleanOperation(Operator.GREATER_THAN_OR_EQUAL.getMethodName(), left, right);
}
public static ExpressionNode lessThan(ExpressionNode left, ExpressionNode right) {
return booleanOperation(Operator.LESS_THAN.getMethodName(), left, right);
}
public static ExpressionNode lessThanOrEqual(ExpressionNode left, ExpressionNode right) {
return booleanOperation(Operator.LESS_THAN_OR_EQUAL.getMethodName(), left, right);
}
private static ExpressionNode booleanOperation(String methodName, ExpressionNode left, ExpressionNode right) {
return methodCall(left, methodName, asList(right), BooleanValue.REF);
}
public static MethodCallNode methodCall(
ExpressionNode receiver,
String methodName,
List<ExpressionNode> arguments,
TypeName type) {
return new MethodCallNode(receiver, methodName, arguments, type);
}
private final ExpressionNode receiver;
private final String methodName;
private final List<ExpressionNode> arguments;
private final TypeName type;
public MethodCallNode(
ExpressionNode receiver,
String methodName,
List<ExpressionNode> arguments,
TypeName type) {
this.receiver = receiver;
this.methodName = methodName;
this.arguments = arguments;
this.type = type;
}
public ExpressionNode getReceiver() {
return receiver;
}
public String getMethodName() {
return methodName;
}
public List<ExpressionNode> getArguments() {
return arguments;
}
public TypeName getType() {
return type;
}
@Override
public <T> T accept(ExpressionNodeMapper<T> visitor) {
return visitor.visit(this);
}
@Override
public ExpressionNode replaceExpressions(Function<ExpressionNode, ExpressionNode> replace) {
return new MethodCallNode(
replace.apply(receiver),
methodName,
eagerMap(arguments, replace::apply),
type);
}
@Override
public String toString() {
return "MethodCallNode(receiver=" + receiver + ", methodName="
+ methodName + ", arguments=" + arguments + ", type=" + type
+ ")";
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result
+ ((arguments == null) ? 0 : arguments.hashCode());
result = prime * result
+ ((methodName == null) ? 0 : methodName.hashCode());
result = prime * result
+ ((receiver == null) ? 0 : receiver.hashCode());
result = prime * result + ((type == null) ? 0 : type.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
MethodCallNode other = (MethodCallNode) obj;
if (arguments == null) {
if (other.arguments != null)
return false;
} else if (!arguments.equals(other.arguments))
return false;
if (methodName == null) {
if (other.methodName != null)
return false;
} else if (!methodName.equals(other.methodName))
return false;
if (receiver == null) {
if (other.receiver != null)
return false;
} else if (!receiver.equals(other.receiver))
return false;
if (type == null) {
if (other.type != null)
return false;
} else if (!type.equals(other.type))
return false;
return true;
}
}
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