public abstract class Assign_c extends Expr_c implements Assign
Assign
represents a Java assignment expression.Assign.Operator
Term.Instance
Modifier and Type | Field and Description |
---|---|
protected Expr |
left |
protected Assign.Operator |
op |
protected Expr |
right |
exceptions, reachable
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 and Description |
---|
Assign_c(Position pos,
Expr left,
Assign.Operator op,
Expr right)
Deprecated.
|
Assign_c(Position pos,
Expr left,
Assign.Operator op,
Expr right,
Ext ext) |
Modifier and Type | Method and Description |
---|---|
<T> java.util.List<T> |
acceptCFG(CFGBuilder<?> v,
java.util.List<T> succs)
Visit this term in evaluation order, calling v.edge() for each successor
in succs, if data flows on that edge.
|
protected abstract void |
acceptCFGAssign(CFGBuilder<?> v)
Construct a CFG for this assignment when the assignment operator
is ASSIGN (i.e., the normal, simple assignment =).
|
protected abstract void |
acceptCFGOpAssign(CFGBuilder<?> v)
Construct a CFG for this assignment when the assignment operator
is of the form op= for some operation op.
|
Type |
childExpectedType(Expr child,
AscriptionVisitor av)
Get the expected type of a child expression of
this . |
Node |
copy(NodeFactory nf)
Produce a copy of this node using the given NodeFactory.
|
void |
dump(CodeWriter w)
Dump the AST node for debugging purposes.
|
abstract Term |
firstChild()
Return the first direct subterm performed when evaluating this term.
|
Expr |
left()
Left child (target) of the assignment.
|
Assign |
left(Expr left)
Set the left child (target) of the assignment.
|
protected <N extends Assign_c> |
left(N n,
Expr left) |
Assign.Operator |
operator()
The assignment's operator.
|
Assign |
operator(Assign.Operator op)
Set the assignment's operator.
|
protected <N extends Assign_c> |
operator(N n,
Assign.Operator op) |
Precedence |
precedence()
Get the precedence of the expression.
|
void |
prettyPrint(CodeWriter w,
PrettyPrinter tr)
Pretty-print the AST using the given
CodeWriter . |
protected <N extends Assign_c> |
reconstruct(N n,
Expr left,
Expr right)
Reconstruct the expression.
|
Expr |
right()
Right child (source) of the assignment.
|
Assign |
right(Expr right)
Set the right child (source) of the assignment.
|
protected <N extends Assign_c> |
right(N n,
Expr right) |
boolean |
throwsArithmeticException()
Get the throwsArithmeticException of the expression.
|
java.util.List<Type> |
throwTypes(TypeSystem ts)
List of Types of exceptions that might get thrown.
|
java.lang.String |
toString() |
Node |
typeCheck(TypeChecker tc)
Type check the AST.
|
Node |
visitChildren(NodeVisitor v)
Visit the children of the node.
|
booleanValue, buildTypes, byteValue, charValue, constantValue, constantValue, constantValueSet, constantValueSet, doubleValue, extRewrite, floatValue, intValue, isConstant, isConstant, isTypeChecked, lastLang, longValue, printSubExpr, printSubExpr, shortValue, stringValue, type, type, type
exceptionCheck, exceptions, exceptions, exceptions, listChild, reachable, reachable, reachable
addDecls, buildTypesEnter, checkConstants, copy, copy, copyIfNeeded, del, del, disambiguate, disambiguateEnter, disambiguateOverride, dump, dump, dump, dump, enterChildScope, enterScope, error, error, error, exceptionCheckEnter, ext, ext, ext, ext, extRewriteEnter, isDisambiguated, lang, position, position, position, prettyPrint, prettyPrint, prettyPrint, prettyPrint, print, printBlock, printSubStmt, translate, typeCheckEnter, typeCheckOverride, visit, visitChild, visitEdge, visitList
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
constantValue, constantValueSet, isConstant, printSubExpr, printSubExpr, type
del, del, error, error, ext, ext, ext, ext, isDisambiguated, isTypeChecked, position, position, visit, visitEdge
addDecls, buildTypes, buildTypesEnter, checkConstants, copy, disambiguate, disambiguateEnter, disambiguateOverride, dump, dump, dump, dump, enterChildScope, enterScope, exceptionCheck, exceptionCheckEnter, extRewrite, extRewriteEnter, lang, prettyPrint, prettyPrint, prettyPrint, prettyPrint, translate, typeCheckEnter, typeCheckOverride, visitChild, visitList
exceptions, exceptions, reachable, reachable
protected Expr left
protected Assign.Operator op
protected Expr right
@Deprecated public Assign_c(Position pos, Expr left, Assign.Operator op, Expr right)
public Assign_c(Position pos, Expr left, Assign.Operator op, Expr right, Ext ext)
public Precedence precedence()
Expr
precedence
in interface Expr
precedence
in class Expr_c
public Expr left()
Assign
public Assign left(Expr left)
Assign
public Assign.Operator operator()
Assign
public Assign operator(Assign.Operator op)
Assign
protected <N extends Assign_c> N operator(N n, Assign.Operator op)
public Expr right()
Assign
public Assign right(Expr right)
Assign
protected <N extends Assign_c> N reconstruct(N n, Expr left, Expr right)
public Node visitChildren(NodeVisitor v)
NodeOps
visitChildren
in interface NodeOps
visitChildren
in class Node_c
v
- The visitor that will traverse/rewrite the AST.this
.public Node typeCheck(TypeChecker tc) throws SemanticException
NodeOps
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.typeCheck
in interface NodeOps
typeCheck
in class Node_c
tc
- The type checking visitor.SemanticException
public Type childExpectedType(Expr child, AscriptionVisitor av)
NodeOps
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.childExpectedType
in interface NodeOps
childExpectedType
in class Node_c
child
- A child expression of this node.av
- An ascription visitor.child
.public boolean throwsArithmeticException()
Assign
throwsArithmeticException
in interface Assign
public void prettyPrint(CodeWriter w, PrettyPrinter tr)
Node_c
CodeWriter
.prettyPrint
in interface NodeOps
prettyPrint
in class Node_c
w
- The code writer to which to write.tr
- The pretty printer. This is not a visitor.public void dump(CodeWriter w)
Node
public abstract Term firstChild()
TermOps
firstChild
in interface TermOps
firstChild
in class Term_c
public <T> java.util.List<T> acceptCFG(CFGBuilder<?> v, java.util.List<T> succs)
TermOps
protected abstract void acceptCFGAssign(CFGBuilder<?> v)
protected abstract void acceptCFGOpAssign(CFGBuilder<?> v)
public java.util.List<Type> throwTypes(TypeSystem ts)
NodeOps
throwTypes
in interface NodeOps
throwTypes
in class Node_c