polyglot.ext.jl.ast
Class Assign_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.Expr_c
              extended by polyglot.ext.jl.ast.Assign_c
All Implemented Interfaces:
java.lang.Cloneable, Assign, Expr, JL, Node, NodeOps, Prefix, Receiver, Term, Typed, Copy
Direct Known Subclasses:
AmbAssign_c, ArrayAccessAssign_c, FieldAssign_c, LocalAssign_c

public abstract class Assign_c
extends Expr_c
implements Assign

An Assign represents a Java assignment expression.


Nested Class Summary
 
Nested classes/interfaces inherited from interface polyglot.ast.Assign
Assign.Operator
 
Field Summary
protected  Expr left
           
protected  Assign.Operator op
           
protected  Expr right
           
 
Fields inherited from class polyglot.ext.jl.ast.Expr_c
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
 
Fields inherited from interface polyglot.ast.Assign
ADD_ASSIGN, ASSIGN, BIT_AND_ASSIGN, BIT_OR_ASSIGN, BIT_XOR_ASSIGN, DIV_ASSIGN, MOD_ASSIGN, MUL_ASSIGN, SHL_ASSIGN, SHR_ASSIGN, SUB_ASSIGN, USHR_ASSIGN
 
Constructor Summary
Assign_c(Position pos, Expr left, Assign.Operator op, Expr right)
           
 
Method Summary
 java.util.List acceptCFG(CFGBuilder v, java.util.List succs)
          Visit this term in evaluation order.
protected abstract  void acceptCFGAssign(CFGBuilder v)
          ###@@@DOCO TODO
protected abstract  void acceptCFGOpAssign(CFGBuilder v)
          ###@@@DOCO TODO
 Type childExpectedType(Expr child, AscriptionVisitor av)
          Get the expected type of a child expression of this.
 void dump(CodeWriter w)
          Dumps the AST.
abstract  Term entry()
          Return the first (sub)term performed when evaluating this term.
 Expr left()
          Get the left operand of the expression.
 Assign left(Expr left)
          Set the left operand of the expression.
 Assign.Operator operator()
          Get the operator of the expression.
 Assign operator(Assign.Operator op)
          Set the operator of the expression.
 Precedence precedence()
          Get the precedence of the expression.
 void prettyPrint(CodeWriter w, PrettyPrinter tr)
          Write the expression to an output file.
protected  Assign_c reconstruct(Expr left, Expr right)
          Reconstruct the expression.
 Expr right()
          Get the right operand of the expression.
 Assign right(Expr right)
          Set the right operand of the expression.
 boolean throwsArithmeticException()
          Get the throwsArithmeticException of the expression.
 java.util.List throwTypes(TypeSystem ts)
          List of Types of exceptions that might get thrown.
 java.lang.String toString()
           
 Node typeCheck(TypeChecker tc)
          Type check the expression.
 Node visitChildren(NodeVisitor v)
          Visit the children of the expression.
 
Methods inherited from class polyglot.ext.jl.ast.Expr_c
booleanValue, buildTypes, byteValue, charValue, constantValue, doubleValue, floatValue, intValue, isConstant, longValue, printSubExpr, printSubExpr, shortValue, stringValue, type, type
 
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
addDecls, addMembers, addMembersEnter, addMembersOverride, buildTypesEnter, buildTypesOverride, copy, del, del, disambiguate, disambiguateEnter, disambiguateOverride, enterScope, enterScope, exceptionCheckEnter, exceptionCheckOverride, ext, ext, ext, ext, init, node, position, position, print, printBlock, printSubStmt, 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
constantValue, isConstant, printSubExpr, printSubExpr, type
 
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
addDecls, addMembers, addMembersEnter, buildTypes, buildTypesEnter, disambiguate, disambiguateEnter, enterScope, enterScope, exceptionCheck, exceptionCheckEnter, translate, typeCheckEnter
 
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

left

protected Expr left

op

protected Assign.Operator op

right

protected Expr right
Constructor Detail

Assign_c

public Assign_c(Position pos,
                Expr left,
                Assign.Operator op,
                Expr right)
Method Detail

precedence

public Precedence precedence()
Get the precedence of the expression.

Specified by:
precedence in interface Expr
Overrides:
precedence in class Expr_c

left

public Expr left()
Get the left operand of the expression.

Specified by:
left in interface Assign

left

public Assign left(Expr left)
Set the left operand of the expression.

Specified by:
left in interface Assign

operator

public Assign.Operator operator()
Get the operator of the expression.

Specified by:
operator in interface Assign

operator

public Assign operator(Assign.Operator op)
Set the operator of the expression.

Specified by:
operator in interface Assign

right

public Expr right()
Get the right operand of the expression.

Specified by:
right in interface Assign

right

public Assign right(Expr right)
Set the right operand of the expression.

Specified by:
right in interface Assign

reconstruct

protected Assign_c reconstruct(Expr left,
                               Expr right)
Reconstruct the expression.


visitChildren

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

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.

typeCheck

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

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.

throwsArithmeticException

public boolean throwsArithmeticException()
Get the throwsArithmeticException of the expression.

Specified by:
throwsArithmeticException in interface Assign

toString

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

prettyPrint

public void prettyPrint(CodeWriter w,
                        PrettyPrinter tr)
Write the expression 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

entry

public abstract 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

acceptCFGAssign

protected abstract void acceptCFGAssign(CFGBuilder v)
###@@@DOCO TODO


acceptCFGOpAssign

protected abstract void acceptCFGOpAssign(CFGBuilder v)
###@@@DOCO TODO


throwTypes

public java.util.List throwTypes(TypeSystem ts)
Description copied from interface: NodeOps
List of Types of exceptions that might get thrown. The result is not necessarily correct until after type checking.

Specified by:
throwTypes in interface NodeOps
Overrides:
throwTypes in class Node_c