package org.eclipse.jdt.core;
/*
* (c) Copyright IBM Corp. 2000, 2001.
* All Rights Reserved.
*/
import org.eclipse.core.runtime.IProgressMonitor;
/**
* Represents an entire Java compilation unit (<code>.java</code> source file).
* Compilation unit elements need to be opened before they can be navigated or manipulated.
* The children are of type <code>IPackageDeclaration</code>,
* <code>IImportContainer</code>, and <code>IType</code>,
* and appear in the order in which they are declared in the source.
* If a <code>.java</code> file cannot be parsed, its structure remains unknown.
* Use <code>IJavaElement.isStructureKnown</code> to determine whether this is
* the case.
* <p>
* This interface is not intended to be implemented by clients.
* </p>
*/
public interface ICompilationUnit extends IJavaElement, ISourceReference, IParent, IOpenable, IWorkingCopy, ISourceManipulation, ICodeAssist {
/**
* Creates and returns an import declaration in this compilation unit
* with the given name.
* <p>
* Optionally, the new element can be positioned before the specified
* sibling. If no sibling is specified, the element will be inserted
* as the last import declaration in this compilation unit.
* <p>
* If the compilation unit already includes the specified import declaration,
* the import is not generated (it does not generate duplicates).
* Note that it is valid to specify both a single-type import and an on-demand import
* for the same package, for example <code>"java.io.File"</code> and
* <code>"java.io.*"</code>, in which case both are preserved since the semantics
* of this are not the same as just importing <code>"java.io.*"</code>.
* Importing <code>"java.lang.*"</code>, or the package in which the compilation unit
* is defined, are not treated as special cases. If they are specified, they are
* included in the result.
*
* @param name the name of the import declaration to add as defined by JLS2 7.5. (For example: <code>"java.io.File"</code> or
* <code>"java.awt.*"</code>)
* @param sibling the existing element which the import declaration will be inserted immediately before (if
* <code> null </code>, then this import will be inserted as the last import declaration.
* @param monitor the progress monitor to notify
* @return the newly inserted import declaration (or the previously existing one in case attempting to create a duplicate)
*
* @exception JavaModelException if the element could not be created. Reasons include:
* <ul>
* <li> This Java element does not exist or the specified sibling does not exist (ELEMENT_DOES_NOT_EXIST)</li>
* <li> A <code>CoreException</code> occurred while updating an underlying resource
* <li> The specified sibling is not a child of this compilation unit (INVALID_SIBLING)
* <li> The name is not a valid import name (INVALID_NAME)
* </ul>
*/
IImportDeclaration createImport(String name, IJavaElement sibling, IProgressMonitor monitor) throws JavaModelException;
/**
* Creates and returns a package declaration in this compilation unit
* with the given package name.
*
* <p>If the compilation unit already includes the specified package declaration,
* it is not generated (it does not generate duplicates).
*
* @param name the name of the package declaration to add as defined by JLS2 7.4. (For example, <code>"java.lang"</code>)
* @param monitor the progress monitor to notify
* @return the newly inserted package declaration (or the previously existing one in case attempting to create a duplicate)
*
* @exception JavaModelException if the element could not be created. Reasons include:
* <ul>
* <li>This Java element does not exist (ELEMENT_DOES_NOT_EXIST)</li>
* <li> A <code>CoreException</code> occurred while updating an underlying resource
* <li> The name is not a valid package name (INVALID_NAME)
* </ul>
*/
IPackageDeclaration createPackageDeclaration(String name, IProgressMonitor monitor) throws JavaModelException;
/**
* Creates and returns a type in this compilation unit with the
* given contents. If this compilation unit does not exist, one
* will be created with an appropriate package declaration.
* <p>
* Optionally, the new type can be positioned before the specified
* sibling. If <code>sibling</code> is <code>null</code>, the type will be appended
* to the end of this compilation unit.
*
* <p>It is possible that a type with the same name already exists in this compilation unit.
* The value of the <code>force</code> parameter effects the resolution of
* such a conflict:<ul>
* <li> <code>true</code> - in this case the type is created with the new contents</li>
* <li> <code>false</code> - in this case a <code>JavaModelException</code> is thrown</li>
* </ul>
*
* @param contents the source contents of the type declaration to add.
* @param sibling the existing element which the type will be inserted immediately before (if
* <code> null </code>, then this type will be inserted as the last type declaration.
* @param force a <code> boolean </code> flag indicating how to deal with duplicates
* @param monitor the progress monitor to notify
* @return the newly inserted type
*
* @exception JavaModelException if the element could not be created. Reasons include:
* <ul>
* <li>The specified sibling element does not exist (ELEMENT_DOES_NOT_EXIST)</li>
* <li> A <code>CoreException</code> occurred while updating an underlying resource
* <li> The specified sibling is not a child of this compilation unit (INVALID_SIBLING)
* <li> The contents could not be recognized as a type declaration (INVALID_CONTENTS)
* <li> There was a naming collision with an existing type (NAME_COLLISION)
* </ul>
*/
IType createType(String contents, IJavaElement sibling, boolean force, IProgressMonitor monitor) throws JavaModelException;
/**
* Returns all types declared in this compilation unit in the order
* in which they appear in the source.
* This includes all top-level types and nested member types.
* It does NOT include local types (types defined in methods).
*
* @return the array of toplevel and member types defined in a compilation unit, in declaration order.
* @exception JavaModelException if this element does not exist or if an
* exception occurs while accessing its corresponding resource
*/
IType[] getAllTypes() throws JavaModelException;
/**
* Returns the smallest element within this compilation unit that
* includes the given source position (that is, a method, field, etc.), or
* <code>null</code> if there is no element other than the compilation
* unit itself at the given position, or if the given position is not
* within the source range of this compilation unit.
*
* @param position a source position inside the compilation unit
* @return the innermost Java element enclosing a given source position or <code>null</code>
* if none (excluding the compilation unit).
* @exception JavaModelException if the compilation unit does not exist or if an
* exception occurs while accessing its corresponding resource
*/
IJavaElement getElementAt(int position) throws JavaModelException;
/**
* Returns the first import declaration in this compilation unit with the given name.
* This is a handle-only method. The import declaration may or may not exist. This
* is a convenience method - imports can also be accessed from a compilation unit's
* import container.
*
* @param the name of the import to find as defined by JLS2 7.5. (For example: <code>"java.io.File"</code>
* or <code>"java.awt.*"</code>)
* @return a handle onto the corresponding import declaration. The import declaration may or may not exist.
*/
IImportDeclaration getImport(String name) ;
/**
* Returns the import container for this compilation unit.
* This is a handle-only method. The import container may or
* may not exist. The import container can used to access the
* imports.
*
* @return a handle onto the corresponding import container. The
* import contain may or may not exist.
*/
IImportContainer getImportContainer();
/**
* Returns the import declarations in this compilation unit
* in the order in which they appear in the source. This is
* a convenience method - import declarations can also be
* accessed from a compilation unit's import container.
*
* @exception JavaModelException if this element does not exist or if an
* exception occurs while accessing its corresponding resource
*/
IImportDeclaration[] getImports() throws JavaModelException;
/**
* Returns the first package declaration in this compilation unit with the given package name
* (there normally is at most one package declaration).
* This is a handle-only method. The package declaration may or may not exist.
*
* @param name the name of the package declaration as defined by JLS2 7.4. (For example, <code>"java.lang"</code>)
*/
IPackageDeclaration getPackageDeclaration(String name);
/**
* Returns the package declarations in this compilation unit
* in the order in which they appear in the source.
* There normally is at most one package declaration.
*
* @return an array of package declaration (normally of size one)
*
* @exception JavaModelException if this element does not exist or if an
* exception occurs while accessing its corresponding resource
*/
IPackageDeclaration[] getPackageDeclarations() throws JavaModelException;
/**
* Returns the top-level type declared in this compilation unit with the given simple type name.
* This is a handle-only method. The type may or may not exist.
*
* @param name the simple name of the requested type in the compilation unit
* @return a handle onto the corresponding type. The type may or may not exist.
*/
IType getType(String name) ;
/**
* Returns the top-level types declared in this compilation unit
* in the order in which they appear in the source.
*
* @exception JavaModelException if this element does not exist or if an
* exception occurs while accessing its corresponding resource
*/
IType[] getTypes() throws JavaModelException;
}