Apache Groovy 3.0.20 · org.apache.groovy.ast.tools.ExpressionUtils

Modifier and Type	Field and Description
private static final int[]	HANDLED_TYPES

Access	Constructor and Description
private	ExpressionUtils()

Method Summary

Modifier and Type	Method and Description
private static ConstantExpression	configure(final Expression origX, final ConstantExpression newX)
private static Expression	findConstant(final FieldNode fn)
public static boolean	isNullConstant(final Expression expr)
public static boolean	Returns: true if the type equals the targetType or array thereof isNumberOrArrayOfNumber(final ClassNode the candidate type targetType, final boolean true if we can have multi-dimension arrays; should be false for annotation member types recurse) Determine if a type is derived from Number (or array thereof).
public static boolean	isSuperExpression(final Expression expression)
public static boolean	isThisExpression(final Expression expression)
public static boolean	isThisOrSuper(final Expression expression)
public static boolean	Returns: true if the type equals the targetType or array thereof isTypeOrArrayOfType(final ClassNode the candidate type targetType, final ClassNode the type we are checking against type, final boolean true if we can have multi-dimension arrays; should be false for annotation member types recurse) Determine if a type matches another type (or array thereof).
private static Number	safeNumber(final ConstantExpression constX)
public static ConstantExpression	Returns: the transformed expression or the original if no transformation was performed transformBinaryConstantExpression(final BinaryExpression the binary expression be, final ClassNode the type of the result targetType) Turns expressions of the form ConstantExpression(40) + ConstantExpression(2) into the simplified ConstantExpression(42) at compile time.
public static Expression	Returns: the transformed type or the original if no transformation was possible transformInlineConstants(final Expression the original expression exp, final ClassNode the type that the final constant should be attrType) Converts simple expressions of constants into pre-evaluated simple constants.
public static Expression	Returns: the converted expression transformInlineConstants(final Expression the original expression exp) The attribute values of annotations must be primitive, String or Enum constants.
public static Expression	Returns: the transformed list or the original if nothing was changed transformListOfConstants(final ListExpression the list to transform origList, final ClassNode the target type attrType) Given a list of constants, transform each item in the list.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

HANDLED_TYPES	back to summary
private static final int[] HANDLED_TYPES

ExpressionUtils	back to summary
private ExpressionUtils()

Method Detail

configure	back to summary
private static ConstantExpression configure(final Expression origX, final ConstantExpression newX)

findConstant	back to summary
private static Expression findConstant(final FieldNode fn)

isNullConstant	back to summary
public static boolean isNullConstant(final Expression expr)

isNumberOrArrayOfNumber	back to summary
public static boolean isNumberOrArrayOfNumber(final ClassNode targetType, final boolean recurse) Determine if a type is derived from Number (or array thereof). Parameters targetType:ClassNode the candidate type recurse:boolean true if we can have multi-dimension arrays; should be false for annotation member types Returns:boolean true if the type equals the targetType or array thereof

isNumberOrArrayOfNumber

back to summary

public static boolean isNumberOrArrayOfNumber(final ClassNode targetType, final boolean recurse)

Determine if a type is derived from Number (or array thereof).

Parameters

targetType:ClassNode: the candidate type
recurse:boolean: true if we can have multi-dimension arrays; should be false for annotation member types

Returns:boolean

true if the type equals the targetType or array thereof

isSuperExpression	back to summary
public static boolean isSuperExpression(final Expression expression)

isThisExpression	back to summary
public static boolean isThisExpression(final Expression expression)

isThisOrSuper	back to summary
public static boolean isThisOrSuper(final Expression expression)

isTypeOrArrayOfType	back to summary
public static boolean isTypeOrArrayOfType(final ClassNode targetType, final ClassNode type, final boolean recurse) Determine if a type matches another type (or array thereof). Parameters targetType:ClassNode the candidate type type:ClassNode the type we are checking against recurse:boolean true if we can have multi-dimension arrays; should be false for annotation member types Returns:boolean true if the type equals the targetType or array thereof

isTypeOrArrayOfType

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public static boolean isTypeOrArrayOfType(final ClassNode targetType, final ClassNode type, final boolean recurse)

Determine if a type matches another type (or array thereof).

Parameters

targetType:ClassNode: the candidate type
type:ClassNode: the type we are checking against
recurse:boolean: true if we can have multi-dimension arrays; should be false for annotation member types

Returns:boolean

true if the type equals the targetType or array thereof

safeNumber	back to summary
private static Number safeNumber(final ConstantExpression constX)

transformBinaryConstantExpression	back to summary
public static ConstantExpression transformBinaryConstantExpression(final BinaryExpression be, final ClassNode targetType) Turns expressions of the form ConstantExpression(40) + ConstantExpression(2) into the simplified ConstantExpression(42) at compile time. Parameters be:BinaryExpression the binary expression targetType:ClassNode the type of the result Returns:ConstantExpression the transformed expression or the original if no transformation was performed

transformBinaryConstantExpression

back to summary

public static ConstantExpression transformBinaryConstantExpression(final BinaryExpression be, final ClassNode targetType)

Turns expressions of the form ConstantExpression(40) + ConstantExpression(2) into the simplified ConstantExpression(42) at compile time.

Parameters

be:BinaryExpression: the binary expression
targetType:ClassNode: the type of the result

Returns:ConstantExpression

the transformed expression or the original if no transformation was performed

transformInlineConstants	back to summary
public static Expression transformInlineConstants(final Expression exp, final ClassNode attrType) Converts simple expressions of constants into pre-evaluated simple constants. Handles: Property expressions - referencing constants Simple binary expressions - String concatenation and numeric +, -, /, * List expressions - list of constants Variable expressions - referencing constants Parameters exp:Expression the original expression attrType:ClassNode the type that the final constant should be Returns:Expression the transformed type or the original if no transformation was possible

transformInlineConstants

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public static Expression transformInlineConstants(final Expression exp, final ClassNode attrType)

Converts simple expressions of constants into pre-evaluated simple constants. Handles:

Property expressions - referencing constants
Simple binary expressions - String concatenation and numeric +, -, /, *
List expressions - list of constants
Variable expressions - referencing constants

Parameters

exp:Expression: the original expression
attrType:ClassNode: the type that the final constant should be

Returns:Expression

the transformed type or the original if no transformation was possible

transformInlineConstants	back to summary
public static Expression transformInlineConstants(final Expression exp) The attribute values of annotations must be primitive, String or Enum constants. In various places, such constants can be seen during type resolution but won't be readily accessible in later phases, e.g. they might be embedded into constructor code. This method transforms constants that would appear in annotations early so they aren't lost. Subsequent processing determines whether they are valid, this method simply retains the constant value as a constant expression. Parameters exp:Expression the original expression Returns:Expression the converted expression

transformInlineConstants

back to summary

public static Expression transformInlineConstants(final Expression exp)

The attribute values of annotations must be primitive, String or Enum constants. In various places, such constants can be seen during type resolution but won't be readily accessible in later phases, e.g. they might be embedded into constructor code. This method transforms constants that would appear in annotations early so they aren't lost. Subsequent processing determines whether they are valid, this method simply retains the constant value as a constant expression.

Parameters

exp:Expression: the original expression

Returns:Expression

the converted expression

transformListOfConstants	back to summary
public static Expression transformListOfConstants(final ListExpression origList, final ClassNode attrType) Given a list of constants, transform each item in the list. Parameters origList:ListExpression the list to transform attrType:ClassNode the target type Returns:Expression the transformed list or the original if nothing was changed

transformListOfConstants

back to summary

public static Expression transformListOfConstants(final ListExpression origList, final ClassNode attrType)

Given a list of constants, transform each item in the list.

Parameters

origList:ListExpression: the list to transform
attrType:ClassNode: the target type

Returns:Expression

the transformed list or the original if nothing was changed

public final Class ExpressionUtils

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Constructor Summary

Method Summary

Field Detail

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