public class Unary_c extends Expr_c implements Unary
Unary
represents a Java unary expression, an
immutable pair of an expression and an operator.Unary.Operator
Term.Instance
Modifier and Type | Field and Description |
---|---|
protected Expr |
expr |
protected Unary.Operator |
op |
exceptions, reachable
Constructor and Description |
---|
Unary_c(Position pos,
Unary.Operator op,
Expr expr) |
Unary_c(Position pos,
Unary.Operator op,
Expr expr,
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.
|
Type |
childExpectedType(Expr child,
AscriptionVisitor av)
Get the expected type of a child expression of
this . |
java.lang.Object |
constantValue(Lang lang)
Return the constant value of the expression, if any.
|
boolean |
constantValueSet(Lang lang)
Return true iff the compiler has determined whether this expression has a
constant value.
|
Node |
copy(NodeFactory nf)
Produce a copy of this node using the given NodeFactory.
|
Expr |
expr()
The sub-expression on which to apply the operator.
|
Unary |
expr(Expr expr)
Set the sub-expression on which to apply the operator.
|
protected <N extends Unary_c> |
expr(N n,
Expr expr) |
Term |
firstChild()
Return the first direct subterm performed when evaluating this term.
|
boolean |
isConstant(Lang lang)
Return whether the expression evaluates to a constant.
|
Unary.Operator |
operator()
The operator to apply on the sub-expression.
|
protected <N extends Unary_c> |
operator(N n,
Unary.Operator op) |
Unary |
operator(Unary.Operator op)
Set the operator to apply on the sub-expression.
|
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 Unary_c> |
reconstruct(N n,
Expr expr)
Reconstruct the expression.
|
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, constantValueSet, doubleValue, dump, extRewrite, floatValue, intValue, 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, throwTypes, 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, dump, 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, throwTypes, translate, typeCheckEnter, typeCheckOverride, visitChild, visitList
exceptions, exceptions, reachable, reachable
protected Unary.Operator op
protected Expr expr
public Unary_c(Position pos, Unary.Operator op, Expr expr)
public Unary_c(Position pos, Unary.Operator op, Expr expr, Ext ext)
public Precedence precedence()
Expr
precedence
in interface Expr
precedence
in class Expr_c
public Expr expr()
Unary
public Unary expr(Expr expr)
Unary
public Unary.Operator operator()
Unary
public Unary operator(Unary.Operator op)
Unary
protected <N extends Unary_c> N operator(N n, Unary.Operator op)
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 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 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
public boolean constantValueSet(Lang lang)
ExprOps
isConstant()
is valid only if
constantValueSet()
is true.constantValueSet
in interface ExprOps
constantValueSet
in class Expr_c
public boolean isConstant(Lang lang)
ExprOps
constantValueSet()
is true.isConstant
in interface ExprOps
isConstant
in class Expr_c
public java.lang.Object constantValue(Lang lang)
ExprOps
isConstant()
is true.constantValue
in interface ExprOps
constantValue
in class Expr_c