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java.lang.Objectpolyglot.ext.jl.ast.Node_c
polyglot.ext.jl.ast.Term_c
polyglot.ext.jl.ast.Expr_c
polyglot.ext.jl.ast.Cast_c
public class Cast_c
A Cast
is an immutable representation of a casting
operation. It consists of an Expr
being cast and a
TypeNode
being cast to.
Field Summary | |
---|---|
protected TypeNode |
castType
|
protected Expr |
expr
|
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 |
Constructor Summary | |
---|---|
Cast_c(Position pos,
TypeNode castType,
Expr expr)
|
Method Summary | |
---|---|
java.util.List |
acceptCFG(CFGBuilder v,
java.util.List succs)
Visit this term in evaluation order. |
TypeNode |
castType()
Get the cast type of the expression. |
Cast |
castType(TypeNode castType)
Set the cast type of the expression. |
Type |
childExpectedType(Expr child,
AscriptionVisitor av)
Get the expected type of a child expression of this . |
java.lang.Object |
constantValue()
Returns the constant value of the expression, if any. |
Term |
entry()
Return the first (sub)term performed when evaluating this term. |
Expr |
expr()
Get the expression being cast. |
Cast |
expr(Expr expr)
Set the expression being cast. |
boolean |
isConstant()
Return whether the expression evaluates to a constant. |
Precedence |
precedence()
Get the precedence of the expression. |
void |
prettyPrint(CodeWriter w,
PrettyPrinter tr)
Write the expression to an output file. |
protected Cast_c |
reconstruct(TypeNode castType,
Expr expr)
Reconstruct 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, doubleValue, dump, floatValue, intValue, 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 |
---|
printSubExpr, printSubExpr, type |
Methods inherited from interface polyglot.ast.Node |
---|
del, del, dump, 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 |
---|
protected TypeNode castType
protected Expr expr
Constructor Detail |
---|
public Cast_c(Position pos, TypeNode castType, Expr expr)
Method Detail |
---|
public Precedence precedence()
precedence
in interface Expr
precedence
in class Expr_c
public TypeNode castType()
castType
in interface Cast
public Cast castType(TypeNode castType)
castType
in interface Cast
public Expr expr()
expr
in interface Cast
public Cast expr(Expr expr)
expr
in interface Cast
protected Cast_c reconstruct(TypeNode castType, Expr expr)
public Node visitChildren(NodeVisitor v)
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
typeCheck
in interface NodeOps
typeCheck
in class Node_c
tc
- The type checking visitor.
SemanticException
public Type childExpectedType(Expr child, AscriptionVisitor av)
Node
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 Node
childExpectedType
in class Node_c
child
- A child expression of this node.av
- An ascription visitor.
child
.public java.lang.String toString()
toString
in class Node_c
public void prettyPrint(CodeWriter w, PrettyPrinter tr)
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 entry()
Term_c
entry
in interface Term
entry
in class Term_c
public java.util.List acceptCFG(CFGBuilder v, java.util.List succs)
Term_c
acceptCFG
in interface Term
acceptCFG
in class Term_c
public java.util.List throwTypes(TypeSystem ts)
NodeOps
throwTypes
in interface NodeOps
throwTypes
in class Node_c
public boolean isConstant()
Expr
isConstant
in interface Expr
isConstant
in class Expr_c
public java.lang.Object constantValue()
Expr
constantValue
in interface Expr
constantValue
in class Expr_c
|
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