org.codehaus.groovy.transform.stc

## Class StaticTypeCheckingSupport

- java.lang.Object
- - org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport

    public abstract class StaticTypeCheckingSupport
    extends java.lang.Object

Static support methods for `StaticTypeCheckingVisitor`.

### Constructor Summary

Constructors
Constructor and Description
`StaticTypeCheckingSupport()`

### Method Summary

Methods
`static int` `allParametersAndArgumentsMatch(Parameter[] params, ClassNode[] args)` Checks that arguments and parameter types match.
`static boolean` `checkCompatibleAssignmentTypes(ClassNode left, ClassNode right)` Returns true or false depending on whether the right classnode can be assigned to the left classnode.
`static boolean` `checkCompatibleAssignmentTypes(ClassNode left, ClassNode right, Expression rightExpression)`
`static java.util.List<MethodNode>` `chooseBestMethod(ClassNode receiver, java.util.Collection<MethodNode> methods, ClassNode... args)` Given a list of candidate methods, returns the one which best matches the argument types
`static java.util.List<MethodNode>` `findDGMMethodsByNameAndArguments(ClassNode receiver, java.lang.String name, ClassNode[] args)`
`static java.util.List<MethodNode>` `findDGMMethodsByNameAndArguments(ClassNode receiver, java.lang.String name, ClassNode[] args, java.util.List<MethodNode> methods)`
`static boolean` `implementsInterfaceOrIsSubclassOf(ClassNode type, ClassNode superOrInterface)`
`static boolean` `isAssignment(int op)`
`static boolean` `isBeingCompiled(ClassNode node)`
`static boolean` `isGStringOrGStringStringLUB(ClassNode node)`
`static boolean` `isParameterizedWithGStringOrGStringString(ClassNode node)`
`static boolean` `isParameterizedWithString(ClassNode node)`
`static boolean` `isWithCall(java.lang.String name, Expression callArguments)` Called on method call checks in order to determine if a method call corresponds to the idiomatic o.with { ... } structure
`static Parameter[]` `parameterizeArguments(ClassNode receiver, MethodNode m)` Given a receiver and a method node, parameterize the method arguments using available generic type information.

### Methods inherited from class java.lang.Object

`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

### Constructor Detail

#### StaticTypeCheckingSupport

    public StaticTypeCheckingSupport()

### Method Detail

#### isWithCall

    public static boolean isWithCall(java.lang.String name,
                     Expression callArguments)

Called on method call checks in order to determine if a method call corresponds to the idiomatic o.with { ... } structure

Parameters:
  `name` - name of the method called
  `callArguments` - arguments of the method
Returns:
  true if the name is "with" and arguments consist of a single closure

#### allParametersAndArgumentsMatch

    public static int allParametersAndArgumentsMatch(Parameter[] params,
                                     ClassNode[] args)

Checks that arguments and parameter types match.

Parameters:
  `params` - method parameters
  `args` - type arguments
Returns:
  -1 if arguments do not match, 0 if arguments are of the exact type and >0 when one or more argument is not of the exact type but still match

#### isAssignment

    public static boolean isAssignment(int op)

#### checkCompatibleAssignmentTypes

    public static boolean checkCompatibleAssignmentTypes(ClassNode left,
                                         ClassNode right)

Returns true or false depending on whether the right classnode can be assigned to the left classnode. This method should not add errors by itself: we let the caller decide what to do if an incompatible assignment is found.

Parameters:
  `left` - the class to be assigned to
  `right` - the assignee class
Returns:
  false if types are incompatible

#### checkCompatibleAssignmentTypes

    public static boolean checkCompatibleAssignmentTypes(ClassNode left,
                                         ClassNode right,
                                         Expression rightExpression)

#### isBeingCompiled

    public static boolean isBeingCompiled(ClassNode node)

#### implementsInterfaceOrIsSubclassOf

    public static boolean implementsInterfaceOrIsSubclassOf(ClassNode type,
                                            ClassNode superOrInterface)

#### findDGMMethodsByNameAndArguments

    public static java.util.List<MethodNode> findDGMMethodsByNameAndArguments(ClassNode receiver,
                                                              java.lang.String name,
                                                              ClassNode[] args)

#### findDGMMethodsByNameAndArguments

    public static java.util.List<MethodNode> findDGMMethodsByNameAndArguments(ClassNode receiver,
                                                              java.lang.String name,
                                                              ClassNode[] args,
                                                              java.util.List<MethodNode> methods)

#### chooseBestMethod

    public static java.util.List<MethodNode> chooseBestMethod(ClassNode receiver,
                                              java.util.Collection<MethodNode> methods,
                                              ClassNode... args)

Given a list of candidate methods, returns the one which best matches the argument types

Parameters:
  `receiver` -
  `methods` - candidate methods
  `args` - argument types
Returns:
  the list of methods which best matches the argument types. It is still possible that multiple methods match the argument types.

#### parameterizeArguments

    public static Parameter[] parameterizeArguments(ClassNode receiver,
                                    MethodNode m)

Given a receiver and a method node, parameterize the method arguments using available generic type information.

Parameters:
  `receiver` - the class
  `m` - the method
Returns:
  the parameterized arguments

#### isGStringOrGStringStringLUB

    public static boolean isGStringOrGStringStringLUB(ClassNode node)

Returns:
  true if the class node is either a GString or the LUB of String and GString.

#### isParameterizedWithGStringOrGStringString

    public static boolean isParameterizedWithGStringOrGStringString(ClassNode node)

Parameters:
  `node` - the node to be tested
Returns:
  true if the node is using generics types and one of those types is a gstring or string/gstring lub

#### isParameterizedWithString

    public static boolean isParameterizedWithString(ClassNode node)

Parameters:
  `node` - the node to be tested
Returns:
  true if the node is using generics types and one of those types is a string