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LevelStatement.java
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LevelStatement.java
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package org.marble.level;
import com.jme3.math.Vector3f;
import com.google.common.base.Objects;
import com.google.common.base.Optional;
import com.google.common.collect.ImmutableList;
/**
* Expresses a statement in the abstract language that describes a level.
*/
public abstract class LevelStatement {
private final Integer location;
protected LevelStatement(final Integer location) {
this.location = location;
}
/**
* The location (index) in the source code that this statement occurs at.
*/
public Integer getLocation() {
return location;
}
/**
* A class alias definition.
*/
static class Alias extends LevelStatement {
private final String alias;
private final String aliasedClass;
public Alias(final Integer location, final String alias,
final String aliasedClass) {
super(location);
this.alias = alias;
this.aliasedClass = aliasedClass;
}
@Override
public boolean equals(final Object that) {
return that instanceof Alias
&& Objects.equal(alias, ((Alias) that).alias)
&& Objects.equal(aliasedClass, ((Alias) that).aliasedClass);
}
/**
* The alias name.
*/
public String getAlias() {
return alias;
}
/**
* The class for which the alias should be.
*/
public String getAliasedClass() {
return aliasedClass;
}
@Override
public int hashCode() {
return Objects.hashCode(alias, aliasedClass);
}
@Override
public String toString() {
return Objects.toStringHelper(this).add("name", alias)
.add("aliasedClass", aliasedClass).toString();
}
}
/**
* A connection definition between two entities, moving the first entity to
* line up with the specified connection to the second entity.
*/
static class Connection extends LevelStatement {
private final String nameLeft, nameRight;
private final String connectorLeft, connectorRight;
public Connection(final Integer location, final String nameLeft,
final String connectorLeft, final String nameRight,
final String connectorRight) {
super(location);
this.nameLeft = nameLeft;
this.connectorLeft = connectorLeft;
this.nameRight = nameRight;
this.connectorRight = connectorRight;
}
@Override
public boolean equals(final Object obj) {
if (obj instanceof Connection) {
final Connection that = (Connection) obj;
return Objects.equal(nameLeft, that.nameLeft)
&& Objects.equal(connectorLeft, that.connectorLeft)
&& Objects.equal(nameRight, that.nameRight)
&& Objects.equal(connectorRight, that.connectorRight);
} else
return false;
}
/**
* The connector for the moved entity.
*/
public String getConnectorLeft() {
return connectorLeft;
}
/**
* The connector for the base entity.
*/
public String getConnectorRight() {
return connectorRight;
}
/**
* The moved entity.
*/
public String getNameLeft() {
return nameLeft;
}
/**
* The base entity.
*/
public String getNameRight() {
return nameRight;
}
@Override
public int hashCode() {
return Objects.hashCode(nameLeft, connectorLeft, nameRight,
connectorRight);
}
@Override
public String toString() {
return Objects.toStringHelper(this).add("nameLeft", nameLeft)
.add("connectorLeft", connectorLeft)
.add("nameRight", nameRight)
.add("connectorRight", connectorRight).toString();
}
}
/**
* An entity definition for creating new entities.
*/
static class Declaration extends LevelStatement {
private final String name;
private final String className;
private final ImmutableList<Object> initArgs;
public Declaration(final Integer location, final String name,
final String className, final ImmutableList<Object> initArgs) {
super(location);
this.name = name;
this.className = className;
this.initArgs = initArgs;
}
@Override
public boolean equals(final Object obj) {
if (obj instanceof Declaration) {
final Declaration that = (Declaration) obj;
return Objects.equal(name, that.name)
&& Objects.equal(className, that.className)
&& Objects.equal(initArgs, that.initArgs);
} else
return false;
}
/**
* The name or alias of the class to instantiate.
*/
public String getClassName() {
return className;
}
/**
* The initialization arguments that should be passed to the entity's
* constructor.
*/
public ImmutableList<Object> getInitArgs() {
return initArgs;
}
/**
* The variable name of the entity.
*/
public String getName() {
return name;
}
@Override
public int hashCode() {
return Objects.hashCode(name, className, initArgs);
}
@Override
public String toString() {
return Objects.toStringHelper(this).add("name", name)
.add("className", className).add("initArgs", initArgs)
.toString();
}
}
/**
* A positioning statement that moves an entity to some location.
*/
static class Position extends LevelStatement {
private final String name;
private final Vector3f position;
private final Optional<String> relativeTo;
public Position(final Integer location, final String name,
final Vector3f position, final Optional<String> relativeTo,
final Optional<String> connectorName) {
super(location);
this.name = name;
this.position = position;
this.relativeTo = relativeTo;
}
@Override
public boolean equals(final Object obj) {
if (obj instanceof Position) {
final Position that = (Position) obj;
return Objects.equal(name, that.name)
&& Objects.equal(position, that.position)
&& Objects.equal(relativeTo, that.relativeTo);
} else
return false;
}
/**
* The name of the entity to position.
*/
public String getName() {
return name;
}
/**
* The position to use when positioning the entity.
*/
public Vector3f getPosition() {
return position;
}
/**
* An optional parameter specifying an entity relative to which the
* positioning should happen.
*/
public Optional<String> getRelativeTo() {
return relativeTo;
}
public Optional<String> getConnector() {
retr
}
@Override
public int hashCode() {
return Objects.hashCode(name, position, relativeTo);
}
@Override
public String toString() {
return Objects.toStringHelper(this).add("name", name)
.add("position", position).add("relativeTo", relativeTo)
.toString();
}
}
}