polyglot.types

Class ImportTable

java.lang.Object

polyglot.types.ImportTable

All Implemented Interfaces:

Resolver

Direct Known Subclasses:

JL5ImportTable

public class ImportTable
extends java.lang.Object
implements Resolver

An ImportTable is a type of ClassResolver that corresponds to a particular source file.

It has a set of package and class imports, which caches the results of lookups for future reference.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.List<Position>	lazyImportPositions Parallel list of positions for lazyImports.
protected java.util.List<java.lang.String>	lazyImports List of class imports which will be lazily added to the table at the next lookup.
protected java.util.Map<java.lang.String,Named>	map Map from names to classes found, or to the NOT_FOUND object.
protected static Named	NOT_FOUND
protected Package	pkg Our package
protected java.util.List<java.lang.String>	singleTypeImports List of explicitly imported classes added to the table or pending in the lazyImports list.
protected java.lang.String	sourceName Source name to use for debugging and error reporting
protected Position	sourcePos Position to use for error reporting
protected TypeSystem	ts
protected java.util.List<java.lang.String>	typeOnDemandImports A list of all type import on demand imports.

Constructor Summary

Constructors

Constructor and Description
ImportTable(TypeSystem ts, Package pkg) Create an import table.
ImportTable(TypeSystem ts, Package pkg, java.lang.String src) Create an import table.

Method Summary

Methods

Modifier and Type	Method and Description
void	addClassImport(java.lang.String className) Add a class import.
void	addClassImport(java.lang.String className, Position pos) Add a class import.
void	addTypeOnDemandImport(java.lang.String pkgOrTypeName) Add a package import.
void	addTypeOnDemandImport(java.lang.String pkgOrTypeName, Position pos) Add a type import on deamnd.
protected Named	cachedFind(java.lang.String name) Find a type by name, using the cache and the outer resolver, but not the import table.
Named	find(java.lang.String name) Find a type by name, searching the import table.
protected Named	findInPkgOrType(java.lang.String name, java.lang.String pkgOrTypeName)
protected boolean	isVisibleFrom(Named n, java.lang.String pkgName) Return whether n in package pkgName is visible from within package pkg.
protected void	lazyImport() Load the class imports, lazily.
protected void	lazyImportLongName(java.lang.String longName) Try to import the class longName
protected void	lazyImportLongNameStaticMember(java.lang.String longName) The class longName may be a static nested class.
Package	package_() The package of the source we are importing types into.
java.util.List<java.lang.String>	singleTypeImports() List the classes explicitly imported.
java.lang.String	sourceName() The name of the source file we are importing into.
java.lang.String	toString()
java.util.List<java.lang.String>	typeOnDemandImports() List the type-on-demands we import from.

Methods inherited from class java.lang.Object

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

Field Detail

ts

protected TypeSystem ts

typeOnDemandImports

protected java.util.List<java.lang.String> typeOnDemandImports

A list of all type import on demand imports.

map

protected java.util.Map<java.lang.String,Named> map

Map from names to classes found, or to the NOT_FOUND object.

lazyImports

protected java.util.List<java.lang.String> lazyImports

List of class imports which will be lazily added to the table at the next lookup.

lazyImportPositions

protected java.util.List<Position> lazyImportPositions

Parallel list of positions for lazyImports.

singleTypeImports

protected java.util.List<java.lang.String> singleTypeImports

List of explicitly imported classes added to the table or pending in the lazyImports list.

sourceName

protected java.lang.String sourceName

Source name to use for debugging and error reporting

sourcePos

protected Position sourcePos

Position to use for error reporting

pkg

protected Package pkg

Our package

NOT_FOUND

protected static final Named NOT_FOUND

Constructor Detail

ImportTable

public ImportTable(TypeSystem ts,
           Package pkg)

Create an import table.

Parameters:

ts - The type system

pkg - The package of the source we are importing types into.

ImportTable

public ImportTable(TypeSystem ts,
           Package pkg,
           java.lang.String src)

Create an import table.

Parameters:

ts - The type system

pkg - The package of the source we are importing types into.

src - The name of the source file we are importing into.

Method Detail

package_

public Package package_()

The package of the source we are importing types into.

addClassImport

public void addClassImport(java.lang.String className)

Add a class import.

addClassImport

public void addClassImport(java.lang.String className,
                  Position pos)

Add a class import.

addTypeOnDemandImport

public void addTypeOnDemandImport(java.lang.String pkgOrTypeName,
                         Position pos)

Add a type import on deamnd.

addTypeOnDemandImport

public void addTypeOnDemandImport(java.lang.String pkgOrTypeName)

Add a package import.

typeOnDemandImports

public java.util.List<java.lang.String> typeOnDemandImports()

List the type-on-demands we import from.

singleTypeImports

public java.util.List<java.lang.String> singleTypeImports()

List the classes explicitly imported.

sourceName

public java.lang.String sourceName()

The name of the source file we are importing into.

cachedFind

protected Named cachedFind(java.lang.String name)
                    throws SemanticException

Find a type by name, using the cache and the outer resolver, but not the import table.

Throws:

SemanticException

find

public Named find(java.lang.String name)
           throws SemanticException

Find a type by name, searching the import table.

Specified by:

find in interface Resolver

Throws:

SemanticException

findInPkgOrType

protected Named findInPkgOrType(java.lang.String name,
                    java.lang.String pkgOrTypeName)
                         throws SemanticException

Throws:

SemanticException

isVisibleFrom

protected boolean isVisibleFrom(Named n,
                    java.lang.String pkgName)

Return whether n in package pkgName is visible from within package pkg. The empty string may be passed in to represent the default package.

lazyImport

protected void lazyImport()
                   throws SemanticException

Load the class imports, lazily.

Throws:

SemanticException

lazyImportLongName

protected void lazyImportLongName(java.lang.String longName)
                           throws SemanticException

Try to import the class longName

Parameters:

longName -

Throws:

SemanticException

lazyImportLongNameStaticMember

protected void lazyImportLongNameStaticMember(java.lang.String longName)
                                       throws SemanticException

The class longName may be a static nested class. Try to import it.

Parameters:

longName -

Throws:

SemanticException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object