at.dms.kjc.sir.lowering
Class LoweringConstants

java.lang.Object
  at.dms.kjc.sir.lowering.LoweringConstants

public class LoweringConstants
extends Object

Contains various constants for the lowering process.

Field Summary

static String	CHILD_NAME The prefix of the name for the variable holding child substreams in structures.
static String	CONTEXT_TYPE_NAME The name of the type serving as the stream context.
static String	CONTEXT_VAR_NAME The name of the variable holding the stream context in structures.
static String	FILE_READER_WORK_NAME The name of the method in the runtime system that runs a filereader.
static String	FILE_WRITER_WORK_NAME The name of the method in the runtime system that runs a filewriter.
static String	IDENTITY_WORK_NAME The name of the method in the runtime system that runs identity.
static String	INPUT_TAPE_NAME The name of the parameter corresponding to the input tape.
static String	JOINER_WORK_NAME The name of the method in the runtime system that runs a joiner.
static String	OUTPUT_TAPE_NAME The name of the parameter corresponding to the output tape.
static String	SPLITTER_WORK_NAME The name of the method in the runtime system that runs a splitter.
static String	STATE_PARAM_NAME The name of the parameter that functions get to access their fields.
static String	TAPE_TYPE_NAME The name of the type of the tape parameters to work functions.

Constructor Summary

LoweringConstants()

Method Summary

static String	getAnonWorkName() Returns a new, unique name for a work function that might have no analogue in the stream structure (is "anonymous")
static JFieldAccessExpression	getChildStruct(SIROperator child) Returns a field access to , as for use within an init function referencing a child.
static JFieldDeclaration	getContextField() Returns the field declaration declaring a stream context.
static JExpression	getDataField() Returns a field access to the current stream structure.
static String	getInitName(SIRStream str) Returns the name of the flattened init function for .
static JFieldDeclaration	getInTapeField() Returns a field declaration for the input tape of structures.
static JVariableDefinition	getInterfaceTableVariable(JExpression initializer) Given the for a field that corresponds to an interface table, returns a variable definition for that field.
static String	getMethodName(String streamName, String methodName) Given that the name of a stream structure is , and the name of a method in that structure is , returns the name for that methd in the flattened class.
static JFieldDeclaration	getOutTapeField() Returns a field declaration for the output tape of structures.
static JExpression	getParentStructureAccess(SIRIterator iter) Creates a field access that gets to the structure of from the toplevel stream.
static JExpression	getStreamContext() Returns a reference to current stream context inside a work function.
static JExpression	getStreamContext(JExpression parentStructure) Returns access to stream context given parent structure
static String	getUniqueVarName() Returns a unique name for a variable to be added to a method of the program.
static String	getWorkName(SIRFilter str) Returns the name of the flattened work function for .

Methods inherited from class java.lang.Object

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

Field Detail

FILE_READER_WORK_NAME

public static final String FILE_READER_WORK_NAME

The name of the method in the runtime system that runs a filereader.

See Also:

Constant Field Values

FILE_WRITER_WORK_NAME

public static final String FILE_WRITER_WORK_NAME

The name of the method in the runtime system that runs a filewriter.

See Also:

Constant Field Values

IDENTITY_WORK_NAME

public static final String IDENTITY_WORK_NAME

The name of the method in the runtime system that runs identity.

See Also:

Constant Field Values

SPLITTER_WORK_NAME

public static final String SPLITTER_WORK_NAME

The name of the method in the runtime system that runs a splitter.

See Also:

Constant Field Values

JOINER_WORK_NAME

public static final String JOINER_WORK_NAME

The name of the method in the runtime system that runs a joiner.

See Also:

Constant Field Values

CONTEXT_TYPE_NAME

public static final String CONTEXT_TYPE_NAME

The name of the type serving as the stream context.

See Also:

Constant Field Values

CONTEXT_VAR_NAME

public static final String CONTEXT_VAR_NAME

The name of the variable holding the stream context in structures.

See Also:

Constant Field Values

CHILD_NAME

public static final String CHILD_NAME

The prefix of the name for the variable holding child substreams in structures.

See Also:

Constant Field Values

STATE_PARAM_NAME

public static final String STATE_PARAM_NAME

The name of the parameter that functions get to access their fields.

See Also:

Constant Field Values

TAPE_TYPE_NAME

public static final String TAPE_TYPE_NAME

The name of the type of the tape parameters to work functions.

See Also:

Constant Field Values

INPUT_TAPE_NAME

public static final String INPUT_TAPE_NAME

The name of the parameter corresponding to the input tape.

See Also:

Constant Field Values

OUTPUT_TAPE_NAME

public static final String OUTPUT_TAPE_NAME

The name of the parameter corresponding to the output tape.

See Also:

Constant Field Values

Constructor Detail

LoweringConstants

public LoweringConstants()

Method Detail

getUniqueVarName

public static String getUniqueVarName()

Returns a unique name for a variable to be added to a method of the program.

getInterfaceTableVariable

public static JVariableDefinition getInterfaceTableVariable(JExpression initializer)

Given the for a field that corresponds to an interface table, returns a variable definition for that field.

getParentStructureAccess

public static JExpression getParentStructureAccess(SIRIterator iter)

Creates a field access that gets to the structure of from the toplevel stream.

getChildStruct

public static JFieldAccessExpression getChildStruct(SIROperator child)

Returns a field access to , as for use within an init function referencing a child.

getDataField

public static JExpression getDataField()

Returns a field access to the current stream structure.

getContextField

public static JFieldDeclaration getContextField()

Returns the field declaration declaring a stream context.

getInTapeField

public static JFieldDeclaration getInTapeField()

Returns a field declaration for the input tape of structures.

getOutTapeField

public static JFieldDeclaration getOutTapeField()

Returns a field declaration for the output tape of structures.

getMethodName

public static String getMethodName(String streamName,
                                   String methodName)

Given that the name of a stream structure is , and the name of a method in that structure is , returns the name for that methd in the flattened class.

getWorkName

public static String getWorkName(SIRFilter str)

Returns the name of the flattened work function for .

getAnonWorkName

public static String getAnonWorkName()

Returns a new, unique name for a work function that might have no analogue in the stream structure (is "anonymous")

getInitName

public static String getInitName(SIRStream str)

Returns the name of the flattened init function for .

getStreamContext

public static JExpression getStreamContext()

Returns a reference to current stream context inside a work function.

getStreamContext

public static JExpression getStreamContext(JExpression parentStructure)

Returns access to stream context given parent structure