Package org.qdl_lang.expressions

Class ModuleExpression

java.lang.Object

org.qdl_lang.expressions.ExpressionImpl

org.qdl_lang.expressions.ModuleExpression

All Implemented Interfaces:

Serializable, ExpressionNode, ExpressionInterface, HasResultInterface, Statement

public class ModuleExpression
extends ExpressionImpl

Models a single module expression of the form A#expression where A is the alias giving the instance of the current module and expression is a general expression to be evaluated against the state of the module.

Created by Jeff Gaynor
on 9/23/21 at 6:10 AM

See Also:

Serialized Form

Field Summary

Fields inherited from class org.qdl_lang.expressions.ExpressionImpl

arguments, result, valence

Fields inherited from interface org.qdl_lang.statements.ExpressionInterface

ALL_INDICES_NODE, ALT_IF_NODE, ASSIGNMENT_NODE, AXIS_RESTRICTION_NODE, CLOSED_SLICE_NODE, COMPARISON_DYAD_NODE, CONSTANT_NODE, DYAD_NODE, DYADIC_FUNCTION_REFERENCE_NODE, EXPRESSION_STEM_NODE, EXPRESSION_STEM2_NODE, FUNCTION_REFERENCE_NODE, LAMBDA_DEFINITION_NODE, LIST_NODE, MODULE_NODE, MONAD_NODE, NILAD_NODE, OPEN_SLICE_NODE, PARENTHESIZED_NODE, PARSE_EXPRESSION_BLOCK_NODE, PARSE_STATEMENT_BLOCK_NODE, POLYAD_NODE, QDL_NULL_NODE, SELECT_NODE, SET_NODE, STEM_ENTRY_NODE, STEM_EXTRACTION_NODE, STEM_NODE, UNKNOWN_NODE, VARIABLE_NODE

Constructor Summary

Constructors

Constructor	Description
ModuleExpression()
ModuleExpression(int operatorType)

Method Summary

Modifier and Type	Method	Description
QDLValue	evaluate(State ambientState)
String	getAlias()
State	getAmbientState()
ExpressionInterface	getExpression()
State	getLocalState(State state)
Module	getModule()	The module associated with this expression.
State	getModuleState()
State	getModuleState(State state)	The state of the current module only.
int	getNodeType()	QDL is not strongly typed but Java is, so each node type should have a unique integer and conditionals should use that, not the instanceof operator.
boolean	isDefaultNamespace()
boolean	isNewModuleVersion()
ExpressionInterface	makeCopy()
void	set(State state, Object newValue)	Set the value of this expression using the state
void	setAlias(String alias)
void	setAmbientState(State ambientState)
void	setDefaultNamespace(boolean defaultNamespace)
void	setExpression(ExpressionInterface expressionInterface)
void	setModule(Module module)
void	setModuleState(State moduleState)
void	setNewModuleVersion(boolean newModuleVersion)

Methods inherited from class org.qdl_lang.expressions.ExpressionImpl

addArgument, evalArg, evalLastArg, evaluatedArgs, getArgAt, getArgCount, getArguments, getEvaluatedArgs, getLastArg, getOperatorType, getResult, getResultType, getSourceCode, getTokenPosition, hasAlias, hasEvaluatedArgs, hasTokenPosition, isEvaluated, isSizeQuery, setArguments, setEvaluated, setEvaluatedArgs, setOperatorType, setResult, setResult, setSizeQuery, setSourceCode, setTokenPosition, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ModuleExpression

public ModuleExpression()

ModuleExpression

public ModuleExpression(int operatorType)

Method Detail

isDefaultNamespace

public boolean isDefaultNamespace()

setDefaultNamespace

public void setDefaultNamespace(boolean defaultNamespace)

getAlias

public String getAlias()

Specified by:

getAlias in interface ExpressionInterface

Overrides:

getAlias in class ExpressionImpl

setAlias

public void setAlias(String alias)

Specified by:

setAlias in interface ExpressionInterface

Overrides:

setAlias in class ExpressionImpl

isNewModuleVersion

public boolean isNewModuleVersion()

setNewModuleVersion

public void setNewModuleVersion(boolean newModuleVersion)

evaluate

public QDLValue evaluate(State ambientState)

getExpression

public ExpressionInterface getExpression()

setExpression

public void setExpression(ExpressionInterface expressionInterface)

makeCopy

public ExpressionInterface makeCopy()

getModule

public Module getModule()

The module associated with this expression.

Returns:

setModule

public void setModule(Module module)

getModuleState

public State getModuleState()

getModuleState

public State getModuleState(State state)

The state of the current module only. This is used to construct the local state.

Returns:

setModuleState

public void setModuleState(State moduleState)

getLocalState

public State getLocalState(State state)

set

public void set(State state,
                Object newValue)

Set the value of this expression using the state

Parameters:

newValue -

getNodeType

public int getNodeType()

Description copied from interface: ExpressionInterface

QDL is not strongly typed but Java is, so each node type should have a unique integer and conditionals should use that, not the instanceof operator. This allows for efficient programming with switch statements rather than a bevy of conditionals (potentially each of which gets done even if the correct case has been handled).

Returns:

getAmbientState

public State getAmbientState()

setAmbientState

public void setAmbientState(State ambientState)