Package org.codehaus.groovy.ast.stmt

# Class ExpressionStatement

java.lang.Object
org.codehaus.groovy.ast.ASTNode
org.codehaus.groovy.ast.stmt.Statement
org.codehaus.groovy.ast.stmt.ExpressionStatement

All Implemented Interfaces:
  `NodeMetaDataHandler`

public class ExpressionStatement extends Statement
Represents an expression statement that executes an expression where the return value is ignored. An expression statement wraps an `Expression` for use as a statement in contexts where an expression must be treated as a statement (e.g., method calls, assignments, or other side-effect-producing expressions). The expression is evaluated and its result is discarded.

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `ExpressionStatement(Expression expression)`
  Constructs an expression statement with the given expression.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `Expression`
  `getExpression()`
  Returns the expression executed by this statement.
  `String`
  `getText()`
  Returns a human-readable text representation of this AST node.
  `void`
  `setExpression(Expression expression)`
  Sets the expression executed by this statement.
  `String`
  `toString()`
  `void`
  `visit(GroovyCodeVisitor visitor)`
  Accepts a code visitor for AST traversal and transformation.

  ### Methods inherited from class org.codehaus.groovy.ast.stmt.Statement

  `addStatementAnnotation, addStatementLabel, copyStatementLabels, getStatementAnnotations, getStatementLabel, getStatementLabels, isEmpty, setStatementLabel`

  ### Methods inherited from class org.codehaus.groovy.ast.ASTNode

  `copyNodeMetaData, getColumnNumber, getLastColumnNumber, getLastLineNumber, getLineNumber, getMetaDataMap, setColumnNumber, setLastColumnNumber, setLastLineNumber, setLineNumber, setMetaDataMap, setSourcePosition`

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

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

  ### Methods inherited from interface org.codehaus.groovy.ast.NodeMetaDataHandler

  `copyNodeMetaData, getNodeMetaData, getNodeMetaData, getNodeMetaData, newMetaDataMap, putNodeMetaData, removeNodeMetaData, setNodeMetaData`

- ## Constructor Details

  - ### ExpressionStatement

    public ExpressionStatement(Expression expression)
    Constructs an expression statement with the given expression.
    Parameters:
      `expression` - the `Expression` to execute; must not be null
    Throws:
      `IllegalArgumentException` - if the expression is null

- ## Method Details

  - ### visit

    public void visit(GroovyCodeVisitor visitor)
    Description copied from class: `ASTNode`
    Accepts a code visitor for AST traversal and transformation. Subclasses must implement this method to support visitor pattern-based processing. The visitor pattern enables decoupling of AST structure from processing logic.
    Overrides:
      `visit` in class `ASTNode`
    Parameters:
      `visitor` - the `GroovyCodeVisitor` to process this node

  - ### getExpression

    public Expression getExpression()
    Returns the expression executed by this statement.
    Returns:
      the `Expression`

  - ### setExpression

    public void setExpression(Expression expression)
    Sets the expression executed by this statement.
    Parameters:
      `expression` - the `Expression`

  - ### getText

    public String getText()
    Description copied from class: `ASTNode`
    Returns a human-readable text representation of this AST node. Used for debugging and error messages. Default implementation returns a message indicating the representation is not yet implemented for this node type.
    Overrides:
      `getText` in class `ASTNode`
    Returns:
      text representation of this node, or placeholder for unimplemented types

  - ### toString

    public String toString()
    Overrides:
      `toString` in class `Object`