Class RobotType

java.lang.Object
   |
   +----Symbol
           |
           +----RobotType

class RobotType

extends Symbol

Author:

Peter Sagerson, petersag@wpi.edu

functions

The custom functions defined by the robot type.

initialBeepers

Defined by the DefineInitialBeepers statement.

parent

Defined by the IsLikeA statement.

variables

The variables defined by the robot type.

RobotType(String, RobotType)

addFunction(Function)

Adds the given function to this RobotType, first ensuring that the name is unique.

addVariable(Variable)

Adds the given variable to this RobotType, first ensuring that the name is unique.

buildVariableString(String)

Called by a Robot or a RobotType derived from this one.

define(Node, RobotWorld)

Defines a new robot type from a branch of the abstract syntax tree.

EnsureUniqueFunc(String)

Ensures that a name is not already associated with a function defined in this RobotType or an ancestor.

EnsureUniqueVar(String)

Ensures that a name is not already associated with a variable defined in this RobotType or an ancestor.

getFunction(String)

Returns the function with the given name, if it exists in this RobotType or any ancestor.

getVariable(String)

Returns the variable with the given name, if it exists in this RobotType or any ancestor.

 public int initialBeepers

Defined by the DefineInitialBeepers statement.

 private RobotType parent

Defined by the IsLikeA statement.

 private SymbolTable functions

The custom functions defined by the robot type.

 private SymbolTable variables

The variables defined by the robot type.

 public RobotType(String inName,
                  RobotType inParent) throws NameLengthException

 public void define(Node root,
                    RobotWorld world)

Defines a new robot type from a branch of the abstract syntax tree. The root node should be the node for the NewRobotType statement.

Parameters:

root - should be an ASTNRT_State

 private void EnsureUniqueFunc(String name) throws DuplicateNameException

Ensures that a name is not already associated with a function defined in this RobotType or an ancestor.

Throws: DuplicateNameException

if the function is already defined.

 private void addFunction(Function f) throws DuplicateNameException

Adds the given function to this RobotType, first ensuring that the name is unique.

Throws: DuplicateNameException

if the function already exists

 public Function getFunction(String name) throws NameNotFoundException

Returns the function with the given name, if it exists in this RobotType or any ancestor.

Throws: NameNotFoundException

if the function does not exist.

 private void EnsureUniqueVar(String name) throws DuplicateNameException

Ensures that a name is not already associated with a variable defined in this RobotType or an ancestor.

Throws: DuplicateNameException

if the variable is already defined.

 private void addVariable(Variable v) throws DuplicateNameException

Adds the given variable to this RobotType, first ensuring that the name is unique.

Throws: DuplicateNameException

if the variable is already defined.

 public Variable getVariable(String name) throws NameNotFoundException

Returns the variable with the given name, if it exists in this RobotType or any ancestor. Note that the Variable object returned is a new copy of the variable, not a reference to the object maintained by the RobotType. This is part of the "lazy variable" scheme.

Throws: NameNotFoundException

if the variable does not exist.

See Also:

getVariable

 public String buildVariableString(String used)

Called by a Robot or a RobotType derived from this one.

Returns:

An empty string if this RobotType has no variables (including inherited ones).

See Also:

Robot