polyglot.ast
Class Local_c

java.lang.Object
  polyglot.ast.Node_c
      polyglot.ast.Term_c
          polyglot.ast.Expr_c
              polyglot.ast.Local_c

All Implemented Interfaces:

java.lang.Cloneable, Expr, JL, Local, NamedVariable, Node, NodeOps, Prefix, Receiver, Term, Typed, Variable, Copy

public class Local_c
extends Expr_c
implements Local

A local variable expression.

Field Summary

protected LocalInstance	li
protected Id	name

Fields inherited from class polyglot.ast.Expr_c

type

Fields inherited from class polyglot.ast.Term_c

exceptions, reachable

Fields inherited from class polyglot.ast.Node_c

del, error, ext, position

Fields inherited from interface polyglot.ast.Term

ENTRY, EXIT

Constructor Summary

Local_c(Position pos, Id name)

Method Summary

java.util.List	acceptCFG(CFGBuilder v, java.util.List succs) Visit this term in evaluation order.
Node	buildTypes(TypeBuilder tb) Collects classes, methods, and fields from the AST rooted at this node and constructs type objects for these.
java.lang.Object	constantValue() Returns the constant value of the expression, if any.
boolean	constantValueSet()
Node	copy(NodeFactory nf) Produce a copy of this node using the given NodeFactory.
void	dump(CodeWriter w) Dumps the AST.
Term	firstChild() Return the first direct subterm performed when evaluating this term.
Flags	flags() Return the access flags of the variable.
Id	id() Get the name of the local.
Local	id(Id name) Set the name of the local.
boolean	isConstant() Return whether the expression evaluates to a constant.
LocalInstance	localInstance() Get the local instance of the local.
Local	localInstance(LocalInstance li) Set the local instance of the local.
java.lang.String	name() Get the name of the local.
Local	name(java.lang.String name) Set the name of the local.
Precedence	precedence() Get the precedence of the local.
void	prettyPrint(CodeWriter w, PrettyPrinter tr) Write the local to an output file.
protected Local_c	reconstruct(Id name) Reconstruct the expression.
java.lang.String	toString()
Node	typeCheck(TypeChecker tc) Type check the local.
VarInstance	varInstance() Get the local instance of the local.
Node	visitChildren(NodeVisitor v) Visit the children of the constructor.

Methods inherited from class polyglot.ast.Expr_c

booleanValue, byteValue, charValue, doubleValue, floatValue, intValue, isTypeChecked, longValue, printSubExpr, printSubExpr, shortValue, stringValue, type, type

Methods inherited from class polyglot.ast.Term_c

exceptionCheck, exceptions, exceptions, listChild, reachable, reachable

Methods inherited from class polyglot.ast.Node_c

addDecls, buildTypesEnter, checkConstants, childExpectedType, copy, copy, del, del, disambiguate, disambiguateEnter, disambiguateOverride, dump, dump, enterChildScope, enterScope, error, error, exceptionCheckEnter, ext, ext, ext, ext, init, isDisambiguated, node, position, position, prettyPrint, prettyPrint, print, printBlock, printSubStmt, throwTypes, translate, typeCheckEnter, typeCheckOverride, visit, visitChild, visitEdge, visitList

Methods inherited from class java.lang.Object

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

Methods inherited from interface polyglot.ast.Expr

printSubExpr, printSubExpr, type

Methods inherited from interface polyglot.ast.Node

childExpectedType, del, del, error, error, ext, ext, ext, ext, isDisambiguated, isTypeChecked, position, position, visit, visitChild, visitEdge, visitList

Methods inherited from interface polyglot.ast.JL

init, node

Methods inherited from interface polyglot.ast.NodeOps

addDecls, buildTypesEnter, checkConstants, copy, disambiguate, disambiguateEnter, disambiguateOverride, dump, dump, enterChildScope, enterScope, exceptionCheck, exceptionCheckEnter, prettyPrint, prettyPrint, throwTypes, translate, typeCheckEnter, typeCheckOverride

Methods inherited from interface polyglot.util.Copy

copy

Methods inherited from interface polyglot.ast.Typed

type

Methods inherited from interface polyglot.ast.Term

exceptions, exceptions, reachable, reachable

Field Detail

name

protected Id name

li

protected LocalInstance li

Constructor Detail

Local_c

public Local_c(Position pos,
               Id name)

Method Detail

precedence

public Precedence precedence()

Get the precedence of the local.

Specified by:

precedence in interface Expr

Overrides:

precedence in class Expr_c

id

public Id id()

Get the name of the local.

Specified by:

id in interface Local

id

public Local id(Id name)

Set the name of the local.

Specified by:

id in interface Local

name

public java.lang.String name()

Get the name of the local.

Specified by:

name in interface Local

Specified by:

name in interface NamedVariable

name

public Local name(java.lang.String name)

Set the name of the local.

Specified by:

name in interface Local

flags

public Flags flags()

Return the access flags of the variable.

Specified by:

flags in interface NamedVariable

Specified by:

flags in interface Variable

varInstance

public VarInstance varInstance()

Get the local instance of the local.

Specified by:

varInstance in interface NamedVariable

localInstance

public LocalInstance localInstance()

Get the local instance of the local.

Specified by:

localInstance in interface Local

localInstance

public Local localInstance(LocalInstance li)

Set the local instance of the local.

Specified by:

localInstance in interface Local

reconstruct

protected Local_c reconstruct(Id name)

Reconstruct the expression.

visitChildren

public Node visitChildren(NodeVisitor v)

Visit the children of the constructor.

Specified by:

visitChildren in interface NodeOps

Overrides:

visitChildren in class Node_c

Parameters:

v - The visitor that will traverse/rewrite the AST.

Returns:

A new AST if a change was made, or this.

buildTypes

public Node buildTypes(TypeBuilder tb)
                throws SemanticException

Description copied from interface: NodeOps

Collects classes, methods, and fields from the AST rooted at this node and constructs type objects for these. These type objects may be ambiguous. Inserts classes into the TypeSystem. This method is called by the leave() method of the visitor. The method should perform work that should be done after visiting the children of the node. The method may return this or a new copy of the node which will be installed as a child of the node's parent.

Specified by:

buildTypes in interface NodeOps

Overrides:

buildTypes in class Expr_c

Parameters:

tb - The visitor which adds new type objects to the TypeSystem.

Throws:

SemanticException

typeCheck

public Node typeCheck(TypeChecker tc)
               throws SemanticException

Type check the local.

Specified by:

typeCheck in interface NodeOps

Overrides:

typeCheck in class Node_c

Parameters:

tc - The type checking visitor.

Throws:

SemanticException

firstChild

public Term firstChild()

Description copied from interface: Term

Return the first direct subterm performed when evaluating this term. If this term has no subterms, this should return null. This method is similar to the deprecated entry(), but it should *not* recursively drill down to the innermost subterm. The direct child visited first in this term's dataflow should be returned.

Specified by:

firstChild in interface Term

acceptCFG

public java.util.List acceptCFG(CFGBuilder v,
                                java.util.List succs)

Description copied from class: Term_c

Visit this term in evaluation order.

Specified by:

acceptCFG in interface Term

Specified by:

acceptCFG in class Term_c

toString

public java.lang.String toString()

Overrides:

toString in class Node_c

prettyPrint

public void prettyPrint(CodeWriter w,
                        PrettyPrinter tr)

Write the local to an output file.

Specified by:

prettyPrint in interface NodeOps

Overrides:

prettyPrint in class Node_c

Parameters:

w - The code writer to which to write.

tr - The pretty printer. This is not a visitor.

dump

public void dump(CodeWriter w)

Dumps the AST.

Specified by:

dump in interface Node

Overrides:

dump in class Expr_c

constantValueSet

public boolean constantValueSet()

Specified by:

constantValueSet in interface Expr

Overrides:

constantValueSet in class Expr_c

isConstant

public boolean isConstant()

Description copied from interface: Expr

Return whether the expression evaluates to a constant. This is not valid until after disambiguation.

Specified by:

isConstant in interface Expr

Overrides:

isConstant in class Expr_c

constantValue

public java.lang.Object constantValue()

Description copied from interface: Expr

Returns the constant value of the expression, if any.

Specified by:

constantValue in interface Expr

Overrides:

constantValue in class Expr_c

copy

public Node copy(NodeFactory nf)

Description copied from interface: NodeOps

Produce a copy of this node using the given NodeFactory.

Specified by:

copy in interface NodeOps

Overrides:

copy in class Node_c