Package org.qdl_lang.functions

Class LambdaDefinitionNode

java.lang.Object

org.qdl_lang.expressions.ExpressionImpl

org.qdl_lang.functions.LambdaDefinitionNode

All Implemented Interfaces:

Serializable, ExpressionNode, FunctionNodeInterface, ExpressionInterface, HasResultInterface, Statement

public class LambdaDefinitionNode
extends ExpressionImpl
implements FunctionNodeInterface

To treat defined lambda expressions they must be ExpressionNodes This wraps a FunctionDefinitionStatement, which cannot be replaced. The strategy is to swap out FDS for these at very specific places to allow for passing lambdas as arguments.

Created by Jeff Gaynor
on 6/3/21 at 8:45 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
LambdaDefinitionNode(int operatorType)
LambdaDefinitionNode(FunctionDefinitionStatement fds)

Method Summary

Modifier and Type	Method	Description
QDLValue	evaluate(State state)
FunctionRecord	getFunctionRecord()
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	hasName()
boolean	isLambda()
ExpressionInterface	makeCopy()
void	setFunctionRecord(FunctionRecord functionRecord)
void	setLambda(boolean lambda)

Methods inherited from class org.qdl_lang.expressions.ExpressionImpl

addArgument, evalArg, evalLastArg, evaluatedArgs, getAlias, getArgAt, getArgCount, getArguments, getEvaluatedArgs, getLastArg, getOperatorType, getResult, getResultType, getSourceCode, getTokenPosition, hasAlias, hasEvaluatedArgs, hasTokenPosition, isEvaluated, isSizeQuery, setAlias, 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

LambdaDefinitionNode

public LambdaDefinitionNode(FunctionDefinitionStatement fds)

LambdaDefinitionNode

public LambdaDefinitionNode(int operatorType)

Method Detail

hasName

public boolean hasName()

evaluate

public QDLValue evaluate(State state)

Specified by:

evaluate in interface Statement

makeCopy

public ExpressionInterface makeCopy()

Specified by:

makeCopy in interface ExpressionInterface

isLambda

public boolean isLambda()

setLambda

public void setLambda(boolean lambda)

getFunctionRecord

public FunctionRecord getFunctionRecord()

setFunctionRecord

public void setFunctionRecord(FunctionRecord functionRecord)

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).

Specified by:

getNodeType in interface ExpressionInterface

Specified by:

getNodeType in interface FunctionNodeInterface

Returns: