polyglot.ext.jl.ast
Class LocalDecl_c

java.lang.Object
  extended by polyglot.ext.jl.ast.Node_c
      extended by polyglot.ext.jl.ast.Term_c
          extended by polyglot.ext.jl.ast.Stmt_c
              extended by polyglot.ext.jl.ast.LocalDecl_c
All Implemented Interfaces:
java.lang.Cloneable, ForInit, JL, LocalDecl, Node, NodeOps, Stmt, Term, VarDecl, Copy

public class LocalDecl_c
extends Stmt_c
implements LocalDecl

A LocalDecl is an immutable representation of the declaration of a local variable.


Field Summary
protected  Flags flags
           
protected  Expr init
           
protected  LocalInstance li
           
protected  java.lang.String name
           
protected  TypeNode type
           
 
Fields inherited from class polyglot.ext.jl.ast.Term_c
exceptions, reachable
 
Fields inherited from class polyglot.ext.jl.ast.Node_c
del, ext, position
 
Constructor Summary
LocalDecl_c(Position pos, Flags flags, TypeNode type, java.lang.String name, Expr init)
           
 
Method Summary
 java.util.List acceptCFG(CFGBuilder v, java.util.List succs)
          Visit this term in evaluation order.
 void addDecls(Context c)
          Add any declarations to the context that should be in scope when visiting later sibling nodes.
 Node buildTypes(TypeBuilder tb)
          Collects classes, methods, and fields from the AST rooted at this node and constructs type objects for these.
 Type childExpectedType(Expr child, AscriptionVisitor av)
          Get the expected type of a child expression of this.
 Type declType()
          Get the type of the declaration.
 Node disambiguate(AmbiguityRemover ar)
          Remove any remaining ambiguities from the AST.
 void dump(CodeWriter w)
          Dump the AST node for debugging purposes.
 Context enterScope(Node child, Context c)
          Add the declaration of the variable as we enter the scope of the intializer
 Term entry()
          Return the first (sub)term performed when evaluating this term.
 Flags flags()
          Get the flags of the declaration.
 LocalDecl flags(Flags flags)
          Set the flags of the declaration.
 Expr init()
          Get the initializer of the declaration.
 LocalDecl init(Expr init)
          Set the initializer of the declaration.
 LocalInstance localInstance()
          Get the local instance of the declaration.
 LocalDecl localInstance(LocalInstance li)
          Set the local instance of the declaration.
 java.lang.String name()
          Get the name of the declaration.
 LocalDecl name(java.lang.String name)
          Set the name of the declaration.
 void prettyPrint(CodeWriter w, PrettyPrinter tr)
          Pretty-print the AST using the given CodeWriter.
protected  LocalDecl_c reconstruct(TypeNode type, Expr init)
          Reconstruct the declaration.
 java.lang.String toString()
           
 TypeNode type()
          Get the type node of the declaration.
 LocalDecl type(TypeNode type)
          Set the type of the declaration.
 Node typeCheck(TypeChecker tc)
          Type check the declaration.
 NodeVisitor typeCheckEnter(TypeChecker tc)
          Override superclass behaviour to check if the variable is multiply defined.
 Node visitChildren(NodeVisitor v)
          Visit the children of the declaration.
 
Methods inherited from class polyglot.ext.jl.ast.Term_c
exceptionCheck, exceptions, exceptions, listEntry, reachable, reachable
 
Methods inherited from class polyglot.ext.jl.ast.Node_c
addMembers, addMembersEnter, addMembersOverride, buildTypesEnter, buildTypesOverride, copy, del, del, disambiguateEnter, disambiguateOverride, enterScope, exceptionCheckEnter, exceptionCheckOverride, ext, ext, ext, ext, init, node, position, position, print, printBlock, printSubStmt, throwTypes, translate, 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.Term
exceptions, exceptions, reachable, reachable
 
Methods inherited from interface polyglot.ast.Node
del, del, ext, ext, ext, ext, position, position, visit, visitChild, visitEdge, visitList
 
Methods inherited from interface polyglot.ast.JL
init, node
 
Methods inherited from interface polyglot.ast.NodeOps
addMembers, addMembersEnter, buildTypesEnter, disambiguateEnter, enterScope, exceptionCheck, exceptionCheckEnter, throwTypes, translate
 
Methods inherited from interface polyglot.util.Copy
copy
 

Field Detail

flags

protected Flags flags

type

protected TypeNode type

name

protected java.lang.String name

init

protected Expr init

li

protected LocalInstance li
Constructor Detail

LocalDecl_c

public LocalDecl_c(Position pos,
                   Flags flags,
                   TypeNode type,
                   java.lang.String name,
                   Expr init)
Method Detail

declType

public Type declType()
Get the type of the declaration.

Specified by:
declType in interface VarDecl

flags

public Flags flags()
Get the flags of the declaration.

Specified by:
flags in interface VarDecl

flags

public LocalDecl flags(Flags flags)
Set the flags of the declaration.

Specified by:
flags in interface LocalDecl

type

public TypeNode type()
Get the type node of the declaration.

Specified by:
type in interface VarDecl

type

public LocalDecl type(TypeNode type)
Set the type of the declaration.

Specified by:
type in interface LocalDecl

name

public java.lang.String name()
Get the name of the declaration.

Specified by:
name in interface VarDecl

name

public LocalDecl name(java.lang.String name)
Set the name of the declaration.

Specified by:
name in interface LocalDecl

init

public Expr init()
Get the initializer of the declaration.

Specified by:
init in interface LocalDecl

init

public LocalDecl init(Expr init)
Set the initializer of the declaration.

Specified by:
init in interface LocalDecl

localInstance

public LocalDecl localInstance(LocalInstance li)
Set the local instance of the declaration.

Specified by:
localInstance in interface LocalDecl

localInstance

public LocalInstance localInstance()
Get the local instance of the declaration.

Specified by:
localInstance in interface VarDecl

reconstruct

protected LocalDecl_c reconstruct(TypeNode type,
                                  Expr init)
Reconstruct the declaration.


visitChildren

public Node visitChildren(NodeVisitor v)
Visit the children of the declaration.

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.

enterScope

public Context enterScope(Node child,
                          Context c)
Add the declaration of the variable as we enter the scope of the intializer

Specified by:
enterScope in interface NodeOps
Overrides:
enterScope in class Node_c
Parameters:
child - the child node about to be entered.
c - the current Context
Returns:
the Context to be used for visiting node child

addDecls

public void addDecls(Context c)
Description copied from class: Node_c
Add any declarations to the context that should be in scope when visiting later sibling nodes.

Specified by:
addDecls in interface NodeOps
Overrides:
addDecls in class Node_c
Parameters:
c - The context to which to add declarations.

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 Node_c
Parameters:
tb - The visitor which adds new type objects to the TypeSystem.
Throws:
SemanticException

disambiguate

public Node disambiguate(AmbiguityRemover ar)
                  throws SemanticException
Description copied from interface: NodeOps
Remove any remaining ambiguities from the AST. 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:
disambiguate in interface NodeOps
Overrides:
disambiguate in class Node_c
Parameters:
ar - The visitor which disambiguates.
Throws:
SemanticException

typeCheckEnter

public NodeVisitor typeCheckEnter(TypeChecker tc)
                           throws SemanticException
Override superclass behaviour to check if the variable is multiply defined.

Specified by:
typeCheckEnter in interface NodeOps
Overrides:
typeCheckEnter in class Node_c
Parameters:
tc - The type checking visitor.
Throws:
SemanticException

typeCheck

public Node typeCheck(TypeChecker tc)
               throws SemanticException
Type check the declaration.

Specified by:
typeCheck in interface NodeOps
Overrides:
typeCheck in class Node_c
Parameters:
tc - The type checking visitor.
Throws:
SemanticException

childExpectedType

public Type childExpectedType(Expr child,
                              AscriptionVisitor av)
Description copied from interface: Node
Get the expected type of a child expression of this. The expected type is determined by the context in that the child occurs (e.g., for x = e, the expected type of e is the declared type of x. The expected type should impose the least constraints on the child's type that are allowed by the parent node.

Specified by:
childExpectedType in interface Node
Overrides:
childExpectedType in class Node_c
Parameters:
child - A child expression of this node.
av - An ascription visitor.
Returns:
The expected type of child.

toString

public java.lang.String toString()
Overrides:
toString in class Node_c

prettyPrint

public void prettyPrint(CodeWriter w,
                        PrettyPrinter tr)
Description copied from class: Node_c
Pretty-print the AST using the given CodeWriter.

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)
Description copied from interface: Node
Dump the AST node for debugging purposes.

Specified by:
dump in interface Node
Overrides:
dump in class Node_c

entry

public Term entry()
Description copied from class: Term_c
Return the first (sub)term performed when evaluating this term.

Specified by:
entry in interface Term
Specified by:
entry in class Term_c

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