Package slogo.instruction

Class Summary

Class	Description
ArithmeticInstruction	The base class of all arithmetic instruction, the evaluate method uses the hook/template method value to return a Double value, the template method returns a double.
Assignment	An assignment instruction assigns an expression to a variable, updating the global state to reflect the assignment.
Back	The Back instruction moves the turtle 10 steps in the opposite direction of its heading.
BinaryExpression	The base class of any binary expression, e.g., a + b, a - b, or, in future use, a < b and so on.
Clean
ClearScreen
Difference	Represents a subtraction (e.g., lhs - rhs)
Equal
Forward
Greater
Heading
HideTurtle
Home
If
Instruction	Represents an instruction in the SLogo language
Left
Less
Minus	Represents unary minus, e.g., MINUS num OR -expression
NotEqual
PenDown
PenDownP
PenUp
Print	The Print instruction prints an expression.
Product	Represents a x b, the multiplication of two expressions
Quotient	Represents a / b, the division of two expressions
Remainder
Repeat	An AST (abstract syntax tree) for a SLogo REPEAT instruction.
Right
SetX
SetXY
SetY
ShowTurtle
StrictInstructionList	A list of instructions that doesn't include a function definition.
Sum	Represents a + b, the addition of two expressions
To
Towards
UnaryExpression	Represents a unary expression
XCor
YCor