gl
Class Tree

Object
  Gl.Tree
      Tree

All Implemented Interfaces:

Serializable

public class Tree
extends Gl.Tree

tree factory to evaluate a Guarded Language program. Each factory method is overridden to substitute the interpreter class. Each branch node class is extended for interpretation.

See Also:

Serialized Form

Nested Class Summary

static class	Tree.Add tree node class.
static class	Tree.AndIf tree node class.
static class	Tree.Assign tree node class.
static class	Tree.Deref tree node class.
static class	Tree.Div tree node class.
static class	Tree.Eq tree node class.
static class	Tree.Ge tree node class.
static class	Tree.Gt tree node class.
static interface	Tree.Interpreter what an interpreter branch node can do.
static class	Tree.Le tree node class.
static class	Tree.Lit tree node class.
static class	Tree.Loop tree node class.
static class	Tree.Lt tree node class.
static class	Tree.Mul tree node class.
static class	Tree.Ne tree node class.
static class	Tree.OrIf tree node class.
static class	Tree.Print tree node class.
static class	Tree.Rem tree node class.
static class	Tree.Select tree node class.
static class	Tree.Sub tree node class.
static class	Tree.With tree node class.

Nested classes/interfaces inherited from class Gl.Tree

Gl.Tree.Guard, Gl.Tree.Stmt, Gl.Tree.Var, Gl.Tree.Visit, Gl.Tree.Visitor

Constructor Summary

Tree()

Method Summary

Tree.Add	add(int position, List args) factory method.
Tree.AndIf	andif(int position, List args) factory method.
Tree.Assign	assign(int position, List args) factory method.
Tree.Deref	deref(int position, List args) factory method.
Tree.Div	div(int position, List args) factory method.
Tree.Eq	eq(int position, List args) factory method.
protected static List<Gl.Tree.Guard>	evalGuards(List guards, Env env) return true guards.
protected static void	evalRandomStmts(List<Gl.Tree.Guard> guards, Env env) evaluate tail of randomly selected guard.
protected static void	evalStmts(List stmts, int offset, Env env) evaluate tail of list.
Tree.Ge	ge(int position, List args) factory method.
Tree.Gt	gt(int position, List args) factory method.
Tree.Le	le(int position, List args) factory method.
Tree.Loop	loop(int position, List args) factory method.
Tree.Lt	lt(int position, List args) factory method.
static void	main(String[] args) main program to compile and interpret a Guarded Language program.
Tree.Mul	mul(int position, List args) factory method.
Tree.Ne	ne(int position, List args) factory method.
Tree.Lit	number(int position, List args) factory method.
Tree.OrIf	orif(int position, List args) factory method.
Tree.Print	print(int position, List args) factory method.
Tree.Rem	rem(int position, List args) factory method.
Tree.Select	select(int position, List args) factory method.
Tree.Sub	sub(int position, List args) factory method.
Tree.With	with(int position, List args) factory method.

Methods inherited from class Gl.Tree

add, guard, remove, stmt, var

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Tree

public Tree()

Method Detail

evalGuards

protected static List<Gl.Tree.Guard> evalGuards(List guards,
                                                Env env)

return true guards.

evalRandomStmts

protected static void evalRandomStmts(List<Gl.Tree.Guard> guards,
                                      Env env)

evaluate tail of randomly selected guard.

evalStmts

protected static void evalStmts(List stmts,
                                int offset,
                                Env env)

evaluate tail of list.

main

public static void main(String[] args)
                 throws Exception

main program to compile and interpret a Guarded Language program.

Throws:

Exception

select

public Tree.Select select(int position,
                          List args)

factory method.

Overrides:

select in class Gl.Tree

loop

public Tree.Loop loop(int position,
                      List args)

factory method.

Overrides:

loop in class Gl.Tree

print

public Tree.Print print(int position,
                        List args)

factory method.

Overrides:

print in class Gl.Tree

with

public Tree.With with(int position,
                      List args)

factory method.

Overrides:

with in class Gl.Tree

orif

public Tree.OrIf orif(int position,
                      List args)

factory method.

Overrides:

orif in class Gl.Tree

andif

public Tree.AndIf andif(int position,
                        List args)

factory method.

Overrides:

andif in class Gl.Tree

eq

public Tree.Eq eq(int position,
                  List args)

factory method.

Overrides:

eq in class Gl.Tree

ne

public Tree.Ne ne(int position,
                  List args)

factory method.

Overrides:

ne in class Gl.Tree

lt

public Tree.Lt lt(int position,
                  List args)

factory method.

Overrides:

lt in class Gl.Tree

le

public Tree.Le le(int position,
                  List args)

factory method.

Overrides:

le in class Gl.Tree

gt

public Tree.Gt gt(int position,
                  List args)

factory method.

Overrides:

gt in class Gl.Tree

ge

public Tree.Ge ge(int position,
                  List args)

factory method.

Overrides:

ge in class Gl.Tree

add

public Tree.Add add(int position,
                    List args)

factory method.

Overrides:

add in class Gl.Tree

sub

public Tree.Sub sub(int position,
                    List args)

factory method.

Overrides:

sub in class Gl.Tree

mul

public Tree.Mul mul(int position,
                    List args)

factory method.

Overrides:

mul in class Gl.Tree

div

public Tree.Div div(int position,
                    List args)

factory method.

Overrides:

div in class Gl.Tree

rem

public Tree.Rem rem(int position,
                    List args)

factory method.

Overrides:

rem in class Gl.Tree

number

public Tree.Lit number(int position,
                       List args)

factory method.

Overrides:

number in class Gl.Tree

deref

public Tree.Deref deref(int position,
                        List args)

factory method.

Overrides:

deref in class Gl.Tree

assign

public Tree.Assign assign(int position,
                          List args)

factory method.

Overrides:

assign in class Gl.Tree