org.nlogo.api
Class Syntax

java.lang.Object
  org.nlogo.api.Syntax

public class Syntax

extends Object

Specifies the arguments accepted by a primitive. Used by the compiler for type-checking.

You cannot instantiate this class directly. Instead, use the static construction methods Syntax.commandSyntax(...) or Syntax.reporterSyntax(...).

For example, in a Reporter that takes two integer arguments and returns a float, implement Primitive.getSyntax() as follows:

 Syntax getSyntax() {
   int[] right = new int[] { Syntax.TYPE_INTEGER, Syntax.TYPE_INTEGER };
   int ret = Syntax.TYPE_FLOAT;
   return Syntax.reporterSyntax( right, ret );
 }
 

See Also:

Primitive.getSyntax()

Field Summary

static int	COMMAND_PRECEDENCE
static int	MAX_PRECEDENCE
static int	NORMAL_PRECEDENCE
static int	TYPE_BOOLEAN
static int	TYPE_BOOLEAN_BLOCK
static int	TYPE_BRACKETED
static int	TYPE_COMMAND_BLOCK
static int	TYPE_FLOAT
static int	TYPE_INTEGER
static int	TYPE_LIST
static int	TYPE_NUMBER
static int	TYPE_NUMBER_BLOCK
static int	TYPE_OTHER_BLOCK
static int	TYPE_READABLE
static int	TYPE_REFERENCE
static int	TYPE_REPEATABLE
static int	TYPE_REPORTER_BLOCK
static int	TYPE_STRING
static int	TYPE_VOID
static int	TYPE_WILDCARD

Method Summary

static Syntax	commandSyntax() Returns an EMPTY_SYNTAX Object for commands with no arguments.
static Syntax	commandSyntax(int[] right) Returns a Syntax for commands with one or more right arguments.
static Syntax	commandSyntax(int[] right, int dfault) Returns a Syntax for commands with a variable number of arguments.
org.nlogo.compiler.Syntax	getSyntax()
static Syntax	reporterSyntax(int ret) Returns a Syntax for reporters with no arguments
static Syntax	reporterSyntax(int[] right, int ret) Returns a Syntax for reporters with one or more right arguments
static Syntax	reporterSyntax(int[] right, int ret, int dfault) Returns a Syntax for reporters with a variable number of arguments.
static Syntax	reporterSyntax(int left, int[] right, int ret, int precedence) Returns a Syntax for reporters with infix arguments

Methods inherited from class java.lang.Object

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

Field Detail

TYPE_VOID

public static final int TYPE_VOID

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Constant Field Values

TYPE_INTEGER

public static final int TYPE_INTEGER

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Constant Field Values

TYPE_FLOAT

public static final int TYPE_FLOAT

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Constant Field Values

TYPE_NUMBER

public static final int TYPE_NUMBER

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Constant Field Values

TYPE_BOOLEAN

public static final int TYPE_BOOLEAN

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Constant Field Values

TYPE_STRING

public static final int TYPE_STRING

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Constant Field Values

TYPE_LIST

public static final int TYPE_LIST

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Constant Field Values

TYPE_READABLE

public static final int TYPE_READABLE

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Constant Field Values

TYPE_WILDCARD

public static final int TYPE_WILDCARD

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Constant Field Values

TYPE_REFERENCE

public static final int TYPE_REFERENCE

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Constant Field Values

TYPE_COMMAND_BLOCK

public static final int TYPE_COMMAND_BLOCK

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Constant Field Values

TYPE_BOOLEAN_BLOCK

public static final int TYPE_BOOLEAN_BLOCK

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Constant Field Values

TYPE_NUMBER_BLOCK

public static final int TYPE_NUMBER_BLOCK

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Constant Field Values

TYPE_OTHER_BLOCK

public static final int TYPE_OTHER_BLOCK

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Constant Field Values

TYPE_REPORTER_BLOCK

public static final int TYPE_REPORTER_BLOCK

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Constant Field Values

TYPE_BRACKETED

public static final int TYPE_BRACKETED

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Constant Field Values

TYPE_REPEATABLE

public static final int TYPE_REPEATABLE

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Constant Field Values

MAX_PRECEDENCE

public static final int MAX_PRECEDENCE

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Constant Field Values

COMMAND_PRECEDENCE

public static final int COMMAND_PRECEDENCE

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Constant Field Values

NORMAL_PRECEDENCE

public static final int NORMAL_PRECEDENCE

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Constant Field Values

Method Detail

commandSyntax

public static Syntax commandSyntax()

Returns an EMPTY_SYNTAX Object for commands with no arguments.

commandSyntax

public static Syntax commandSyntax(int[] right)

Returns a Syntax for commands with one or more right arguments.

Parameters:

right - an array of TYPE flags that are to be to the right of the Primitive

commandSyntax

public static Syntax commandSyntax(int[] right,
                                   int dfault)

Returns a Syntax for commands with a variable number of arguments.

Parameters:

right - an array of TYPE flags that are to be to the right of the primitive

dfault - the default number of arguments if no parenthesis are used.

reporterSyntax

public static Syntax reporterSyntax(int ret)

Returns a Syntax for reporters with no arguments

Parameters:

ret - the return type

reporterSyntax

public static Syntax reporterSyntax(int left,
                                    int[] right,
                                    int ret,
                                    int precedence)

Returns a Syntax for reporters with infix arguments

Parameters:

left -

right -

ret - the return type

precedence -

reporterSyntax

public static Syntax reporterSyntax(int[] right,
                                    int ret)

Returns a Syntax for reporters with one or more right arguments

Parameters:

right - an array of TYPE flags that are to the be right of the Primitive

ret - the return type

reporterSyntax

public static Syntax reporterSyntax(int[] right,
                                    int ret,
                                    int dfault)

Returns a Syntax for reporters with a variable number of arguments.

Parameters:

right - an array of TYPE flags that are to the be right of the primitive

ret - the return type

dfault - the default number of arguments if no parenthesis are used.

getSyntax

public org.nlogo.compiler.Syntax getSyntax()