gnu.expr
Class ModuleMethod

java.lang.Object
  gnu.mapping.Procedure
      gnu.mapping.ProcedureN
          gnu.mapping.MethodProc
              gnu.expr.ModuleMethod

All Implemented Interfaces:

Named

public class ModuleMethod
extends MethodProc

Call a specified method in in a ModuleBody. We use an extra level of indirection, but we save by having to create fewer classes than in the one-class-per-procedure scheme, without having to use (slow) reflection.

Field Summary

ModuleBody	module
protected int	numArgs
int	selector

Fields inherited from class gnu.mapping.MethodProc

argTypes, NO_MATCH, NO_MATCH_AMBIGUOUS, NO_MATCH_BAD_TYPE, NO_MATCH_TOO_FEW_ARGS, NO_MATCH_TOO_MANY_ARGS

Fields inherited from class gnu.mapping.ProcedureN

noArgs

Constructor Summary

ModuleMethod(ModuleBody module, int selector, java.lang.Object name, int numArgs)

ModuleMethod(ModuleBody module, int selector, java.lang.Object name, int numArgs, java.lang.Object argTypes)

Method Summary

void	apply(CallContext ctx) Call this Procedure using the explicit-CallContext-convention.
java.lang.Object	apply0()
static java.lang.Object	apply0Default(ModuleMethod method)
java.lang.Object	apply1(java.lang.Object arg1)
static java.lang.Object	apply1Default(ModuleMethod method, java.lang.Object arg1)
java.lang.Object	apply2(java.lang.Object arg1, java.lang.Object arg2)
static java.lang.Object	apply2Default(ModuleMethod method, java.lang.Object arg1, java.lang.Object arg2)
java.lang.Object	apply3(java.lang.Object arg1, java.lang.Object arg2, java.lang.Object arg3)
static java.lang.Object	apply3Default(ModuleMethod method, java.lang.Object arg1, java.lang.Object arg2, java.lang.Object arg3)
java.lang.Object	apply4(java.lang.Object arg1, java.lang.Object arg2, java.lang.Object arg3, java.lang.Object arg4)
static java.lang.Object	apply4Default(ModuleMethod method, java.lang.Object arg1, java.lang.Object arg2, java.lang.Object arg3, java.lang.Object arg4)
static void	applyError() Helper methods for default ModuleBody actions.
java.lang.Object	applyN(java.lang.Object[] args)
static java.lang.Object	applyNDefault(ModuleMethod method, java.lang.Object[] args)
java.lang.String	getName()
int	match0(CallContext ctx) Pass zero arguments.
int	match1(java.lang.Object arg1, CallContext ctx) Pass one argument.
int	match2(java.lang.Object arg1, java.lang.Object arg2, CallContext ctx) Pass two arguments.
int	match3(java.lang.Object arg1, java.lang.Object arg2, java.lang.Object arg3, CallContext ctx) Pass three arguments.
int	match4(java.lang.Object arg1, java.lang.Object arg2, java.lang.Object arg3, java.lang.Object arg4, CallContext ctx) Pass four arguments.
int	matchN(java.lang.Object[] args, CallContext ctx)
int	numArgs() Return minArgs()|(maxArgs<<12).
protected void	resolveParameterTypes() Figure out parameter types.

Methods inherited from class gnu.mapping.MethodProc

getParameterType, isApplicable, matchFailAsException, mostSpecific, mostSpecific, numParameters

Methods inherited from class gnu.mapping.Procedure

apply, check0, check1, check2, check3, check4, checkArgCount, checkN, getProperty, getSetter, getSymbol, maxArgs, minArgs, name, removeProperty, set0, set1, setN, setName, setProperty, setProperty, setSetter, setSymbol, toString

Methods inherited from class java.lang.Object

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

Field Detail

module

public ModuleBody module

selector

public final int selector

numArgs

protected int numArgs

Constructor Detail

ModuleMethod

public ModuleMethod(ModuleBody module,
                    int selector,
                    java.lang.Object name,
                    int numArgs)

ModuleMethod

public ModuleMethod(ModuleBody module,
                    int selector,
                    java.lang.Object name,
                    int numArgs,
                    java.lang.Object argTypes)

Method Detail

getName

public java.lang.String getName()

Specified by:

getName in interface Named

Overrides:

getName in class Procedure

resolveParameterTypes

protected void resolveParameterTypes()

Figure out parameter types. Uses reflection to get method parameter types. INCOMPLETE - does not handle procedures with optional or rest args.

Overrides:

resolveParameterTypes in class MethodProc

numArgs

public int numArgs()

Description copied from class: Procedure

Return minArgs()|(maxArgs<<12).

Overrides:

numArgs in class Procedure

match0

public int match0(CallContext ctx)

Description copied from class: Procedure

Pass zero arguments.

Overrides:

match0 in class Procedure

Returns:

non-negative if the match succeeded, else negative.

match1

public int match1(java.lang.Object arg1,
                  CallContext ctx)

Description copied from class: Procedure

Pass one argument.

Overrides:

match1 in class Procedure

Returns:

non-negative if the match succeeded, else negative.

match2

public int match2(java.lang.Object arg1,
                  java.lang.Object arg2,
                  CallContext ctx)

Description copied from class: Procedure

Pass two arguments.

Overrides:

match2 in class Procedure

Returns:

non-negative if the match succeeded, else negative.

match3

public int match3(java.lang.Object arg1,
                  java.lang.Object arg2,
                  java.lang.Object arg3,
                  CallContext ctx)

Description copied from class: Procedure

Pass three arguments.

Overrides:

match3 in class Procedure

Returns:

non-negative if the match succeeded, else negative.

match4

public int match4(java.lang.Object arg1,
                  java.lang.Object arg2,
                  java.lang.Object arg3,
                  java.lang.Object arg4,
                  CallContext ctx)

Description copied from class: Procedure

Pass four arguments.

Overrides:

match4 in class Procedure

Returns:

non-negative if the match succeeded, else negative.

matchN

public int matchN(java.lang.Object[] args,
                  CallContext ctx)

Overrides:

matchN in class Procedure

apply

public void apply(CallContext ctx)
           throws java.lang.Throwable

Description copied from class: Procedure

Call this Procedure using the explicit-CallContext-convention. The input arguments are (by default) in stack.args; the result is written to ctx.consumer.

Overrides:

apply in class Procedure

Throws:

java.lang.Throwable

apply0

public java.lang.Object apply0()
                        throws java.lang.Throwable

Overrides:

apply0 in class ProcedureN

Throws:

java.lang.Throwable

apply1

public java.lang.Object apply1(java.lang.Object arg1)
                        throws java.lang.Throwable

Overrides:

apply1 in class ProcedureN

Throws:

java.lang.Throwable

apply2

public java.lang.Object apply2(java.lang.Object arg1,
                               java.lang.Object arg2)
                        throws java.lang.Throwable

Overrides:

apply2 in class ProcedureN

Throws:

java.lang.Throwable

apply3

public java.lang.Object apply3(java.lang.Object arg1,
                               java.lang.Object arg2,
                               java.lang.Object arg3)
                        throws java.lang.Throwable

Overrides:

apply3 in class ProcedureN

Throws:

java.lang.Throwable

apply4

public java.lang.Object apply4(java.lang.Object arg1,
                               java.lang.Object arg2,
                               java.lang.Object arg3,
                               java.lang.Object arg4)
                        throws java.lang.Throwable

Overrides:

apply4 in class ProcedureN

Throws:

java.lang.Throwable

applyN

public java.lang.Object applyN(java.lang.Object[] args)
                        throws java.lang.Throwable

Overrides:

applyN in class MethodProc

Throws:

java.lang.Throwable

apply0Default

public static java.lang.Object apply0Default(ModuleMethod method)
                                      throws java.lang.Throwable

Throws:

java.lang.Throwable

apply1Default

public static java.lang.Object apply1Default(ModuleMethod method,
                                             java.lang.Object arg1)
                                      throws java.lang.Throwable

Throws:

java.lang.Throwable

apply2Default

public static java.lang.Object apply2Default(ModuleMethod method,
                                             java.lang.Object arg1,
                                             java.lang.Object arg2)
                                      throws java.lang.Throwable

Throws:

java.lang.Throwable

apply3Default

public static java.lang.Object apply3Default(ModuleMethod method,
                                             java.lang.Object arg1,
                                             java.lang.Object arg2,
                                             java.lang.Object arg3)
                                      throws java.lang.Throwable

Throws:

java.lang.Throwable

apply4Default

public static java.lang.Object apply4Default(ModuleMethod method,
                                             java.lang.Object arg1,
                                             java.lang.Object arg2,
                                             java.lang.Object arg3,
                                             java.lang.Object arg4)
                                      throws java.lang.Throwable

Throws:

java.lang.Throwable

applyNDefault

public static java.lang.Object applyNDefault(ModuleMethod method,
                                             java.lang.Object[] args)
                                      throws java.lang.Throwable

Throws:

java.lang.Throwable

applyError

public static void applyError()

Helper methods for default ModuleBody actions.