Package net.hydromatic.morel.eval

Evaluates expressions.

Interface Summary

Interface	Description
Applicable	A compiled expression that can be evaluated by applying to an argument.
Code	A compiled expression, that can be evaluated.
Codes.Positioned	An Applicable whose position can be changed.
Codes.RowSink	Accepts rows produced by a supplier as part of a from clause.
Describable	Can be visited by a Describer.
Describer	Describes a plan (tree of Code or Applicable objects).
Describer.Detail	Provided as a callback while describing a node.
EvalEnv	Evaluation environment.
MutableEvalEnv	An evaluation environment whose last entry is mutable.
Session.Shell	Callback to implement "use" command.

Class Summary

Class	Description
Applicable2<R,A0,A1>	Applicable whose argument is a 3-tuple.
Applicable3<R,A0,A1,A2>	Applicable whose argument is a 3-tuple.
ApplicableImpl	Abstract implementation of Applicable that describes itself with a constant name.
Closure	Value that is sufficient for a function to bind its argument and evaluate its body.
Closure.EvalEnvHolder	Callback for Closure.bindRecurse(Core.Pat, Object, BiConsumer) that modifies an environment.
Codes	Helpers for Code.
Codes.AndAlsoCode	Code that implements Codes.andAlso(Code, Code).
Codes.ApplyCode	Applies an Applicable to a Code.
Codes.ApplyCode2	Applies an Applicable2 to two Code arguments.
Codes.ApplyCode3	Applies an Applicable3 to three Code arguments.
Codes.ApplyCodeCode	Applies a Code to a Code.
Codes.CollectRowSink	Implementation of Codes.RowSink that the last step of a from writes into.
Codes.ConstantCode	Code that implements a constant.
Codes.GetCode	Code that retrieves the value of a variable from the environment.
Codes.GetTupleCode	Code that retrieves, as a tuple, the value of several variables from the environment.
Codes.GroupRowSink	Implementation of Codes.RowSink for a group clause.
Codes.InteractUse	Implements BuiltIn.INTERACT_USE.
Codes.Let1Code	Code that implements Codes.let(List, Code) with one argument.
Codes.LetCode	Code that implements Codes.let(List, Code) with multiple arguments.
Codes.ListHd	Implements BuiltIn.LIST_HD.
Codes.ListLast	Implements BuiltIn.LIST_LAST.
Codes.ListNth	Implements BuiltIn.LIST_NTH and BuiltIn.VECTOR_SUB.
Codes.ListTabulate	Implements BuiltIn.LIST_TABULATE.
Codes.ListTake	Implements BuiltIn.LIST_TAKE.
Codes.ListTl	Implements BuiltIn.LIST_TL.
Codes.OptionValOf	Implements BuiltIn.OPTION_VAL_OF.
Codes.OrderRowSink	Implementation of Codes.RowSink for an order clause.
Codes.OrElseCode	Code that implements Codes.orElse(Code, Code).
Codes.RealCheckFloat	Implements BuiltIn.REAL_CHECK_FLOAT.
Codes.RealCompare	Implements BuiltIn.REAL_COMPARE.
Codes.RealSign	Implements BuiltIn.REAL_COMPARE.
Codes.RelationalOnly	Implements BuiltIn.RELATIONAL_ONLY.
Codes.ScanRowSink	Implementation of Codes.RowSink for a join clause.
Codes.StringConcat	Implements BuiltIn.STRING_CONCAT.
Codes.StringConcatWith	Implements BuiltIn.STRING_CONCAT_WITH.
Codes.StringExtract	Implements BuiltIn.STRING_SUB.
Codes.StringSub	Implements BuiltIn.STRING_SUB.
Codes.StringSubstring	Implements BuiltIn.STRING_SUBSTRING.
Codes.TupleCode	A code that evaluates expressions and creates a tuple with the results.
Codes.VectorUpdate	Implements BuiltIn.VECTOR_UPDATE.
Codes.WhereRowSink	Implementation of Codes.RowSink for a where clause.
Codes.WrapRelList	A Code that evaluates a Code and if the result is a RelList, wraps it in a different kind of list.
Codes.YieldRowSink	Implementation of Codes.RowSink for a yield step.
DescriberImpl	Implementation of .Describer.
EvalEnvs	Helpers for EvalEnv.
EvalEnvs.ArraySubEvalEnv	Similar to MutableEvalEnv but binds several names.
EvalEnvs.MapEvalEnv	Evaluation environment that reads from a map.
EvalEnvs.MutableArraySubEvalEnv	Similar to MutableEvalEnv but binds several names; extends EvalEnvs.ArraySubEvalEnv adding mutability.
EvalEnvs.MutablePatSubEvalEnv	Evaluation environment that binds several slots based on a pattern.
EvalEnvs.MutableSubEvalEnv	Similar to EvalEnvs.SubEvalEnv but mutable.
EvalEnvs.PatSubEvalEnv	Immutable copy of EvalEnvs.MutablePatSubEvalEnv.
EvalEnvs.SubEvalEnv	Evaluation environment that inherits from a parent environment and adds one binding.
Session	Session environment.
Unit	A placeholder value for the "unit" type.

Enum Summary

Enum	Description
Codes.BuiltInExn	Definitions of Morel built-in exceptions.
Prop	Property.
Session.Shells	Various implementations of Session.Shell.

Exception Summary

Exception	Description
Codes.MorelRuntimeException	Java exception that wraps an exception thrown by the Morel runtime.