public abstract class Expression extends ASTNode
ANNOTATION_TYPE_DECLARATION, ANNOTATION_TYPE_MEMBER_DECLARATION, ANONYMOUS_CLASS_DECLARATION, ARRAY_ACCESS, ARRAY_CREATION, ARRAY_INITIALIZER, ARRAY_TYPE, ASSERT_STATEMENT, ASSIGNMENT, BLOCK, BLOCK_COMMENT, BOOLEAN_LITERAL, BREAK_STATEMENT, CAST_EXPRESSION, CATCH_CLAUSE, CHARACTER_LITERAL, CLASS_INSTANCE_CREATION, COMPILATION_UNIT, CONDITIONAL_EXPRESSION, CONSTRUCTOR_INVOCATION, CONTINUE_STATEMENT, CREATION_REFERENCE, DIMENSION, DO_STATEMENT, EMPTY_STATEMENT, ENHANCED_FOR_STATEMENT, ENUM_CONSTANT_DECLARATION, ENUM_DECLARATION, EXPORTS_DIRECTIVE, EXPRESSION_METHOD_REFERENCE, EXPRESSION_STATEMENT, FIELD_ACCESS, FIELD_DECLARATION, FOR_STATEMENT, IF_STATEMENT, IMPORT_DECLARATION, INFIX_EXPRESSION, INITIALIZER, INSTANCEOF_EXPRESSION, INTERSECTION_TYPE, JAVADOC, LABELED_STATEMENT, LAMBDA_EXPRESSION, LINE_COMMENT, MALFORMED, MARKER_ANNOTATION, MEMBER_REF, MEMBER_VALUE_PAIR, METHOD_DECLARATION, METHOD_INVOCATION, METHOD_REF, METHOD_REF_PARAMETER, MODIFIER, MODULE_DECLARATION, MODULE_MODIFIER, NAME_QUALIFIED_TYPE, NORMAL_ANNOTATION, NULL_LITERAL, NUMBER_LITERAL, OPENS_DIRECTIVE, ORIGINAL, PACKAGE_DECLARATION, PARAMETERIZED_TYPE, PARENTHESIZED_EXPRESSION, POSTFIX_EXPRESSION, PREFIX_EXPRESSION, PRIMITIVE_TYPE, PROTECT, PROVIDES_DIRECTIVE, QUALIFIED_NAME, QUALIFIED_TYPE, RECOVERED, REQUIRES_DIRECTIVE, RETURN_STATEMENT, SIMPLE_NAME, SIMPLE_TYPE, SINGLE_MEMBER_ANNOTATION, SINGLE_VARIABLE_DECLARATION, STRING_LITERAL, SUPER_CONSTRUCTOR_INVOCATION, SUPER_FIELD_ACCESS, SUPER_METHOD_INVOCATION, SUPER_METHOD_REFERENCE, SWITCH_CASE, SWITCH_STATEMENT, SYNCHRONIZED_STATEMENT, TAG_ELEMENT, TEXT_ELEMENT, THIS_EXPRESSION, THROW_STATEMENT, TRY_STATEMENT, TYPE_DECLARATION, TYPE_DECLARATION_STATEMENT, TYPE_LITERAL, TYPE_METHOD_REFERENCE, TYPE_PARAMETER, UNION_TYPE, USES_DIRECTIVE, VARIABLE_DECLARATION_EXPRESSION, VARIABLE_DECLARATION_FRAGMENT, VARIABLE_DECLARATION_STATEMENT, WHILE_STATEMENT, WILDCARD_TYPE
|Modifier and Type||Method and Description|
Returns whether this expression node is the site of a boxing conversion (JLS3 5.1.7).
Resolves and returns the compile-time constant expression value as specified in JLS2 15.28, if this expression has one.
Resolves and returns the binding for the type of this expression.
Returns whether this expression node is the site of an unboxing conversion (JLS3 5.1.8).
accept, copySubtree, copySubtrees, delete, equals, getAST, getFlags, getLength, getLocationInParent, getNodeType, getParent, getProperty, getRoot, getStartPosition, getStructuralProperty, hashCode, nodeClassForType, properties, setFlags, setProperty, setSourceRange, setStructuralProperty, structuralPropertiesForType, subtreeBytes, subtreeMatch, toString
public final Object resolveConstantExpressionValue()
Integer); if the type of the value is
String, the result is the string itself. If the expression does not have a compile-time constant expression value, the result is
Resolving constant expressions takes into account the value of simple and qualified names that refer to constant variables (JLS2 4.12.4).
Note 1: enum constants are not considered constant expressions.
The result is always
null for these.
Note 2: Compile-time constant expressions cannot denote
NullLiteral nodes are not constant expressions.
The result is
null for these nonetheless.
nullif this expression has no constant expression value or if bindings were not requested when the AST was created
public final ITypeBinding resolveTypeBinding()
Note that bindings are generally unavailable unless requested when the AST is being built.
nullif the type cannot be resolved
public final boolean resolveBoxing()
trueif this expression is the site of a boxing conversion, or
falseif either no boxing conversion is involved or if bindings were not requested when the AST was created
public final boolean resolveUnboxing()
trueif this expression is the site of an unboxing conversion, or
falseif either no unboxing conversion is involved or if bindings were not requested when the AST was created
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