Grammatica 1.5 Documentation: ProductionPatternElement

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Grammatica 1.5 Documentation

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PerCederberg.Grammatica.Runtime
Class ProductionPatternElement

System.Object
   |
   +--ProductionPatternElement

in ProductionPatternElement.cs

public class ProductionPatternElement
extends System.Object

A production pattern element. This class represents a reference to either a token or a production. Each element also contains minimum and maximum occurence counters, controlling the number of repetitions allowed. A production pattern element is always contained within a production pattern rule.

Field Summary
`int`	`Id` The node identity property (read-only).
`internal LookAheadSet`	`LookAhead` The look-ahead set property.
`int`	`MaxCount` The maximum occurence count property (read-only).
`int`	`MinCount` The minimum occurence count property (read-only).

Constructor Summary
`ProductionPatternElement( bool isToken, int id, int min, int max )` Creates a new element.

Method Summary
`override bool`	`Equals( object obj )` Checks if this object is equal to another.
`override int`	`GetHashCode()` Returns a hash code for this object.
`int`	`GetId()` Deprecated. Use the Id property instead.
`int`	`GetMaxCount()` Deprecated. Use the MaxCount property instead.
`int`	`GetMinCount()` Deprecated. Use the MinCount property instead.
`bool`	`IsMatch( Token token )` Checks if a specific token matches this element.
`bool`	`IsProduction()` Returns true if this element represents a production.
`bool`	`IsToken()` Returns true if this element represents a token.
`override string`	`ToString()` Returns a string representation of this object.

Field Detail

Id

public int Id;

The node identity property (read-only).

LookAhead

 internal LookAheadSet LookAhead;

The look-ahead set property. This is the look-ahead set associated with this alternative.

MaxCount

public int MaxCount;

The maximum occurence count property (read-only).

MinCount

public int MinCount;

The minimum occurence count property (read-only).

Constructor Detail

ProductionPatternElement

public ProductionPatternElement( bool isToken, int id, int min, int max );

Creates a new element. If the maximum value if zero (0) or negative, it will be set to Int32.MaxValue.

Method Detail

Equals

public override bool Equals( object obj );

Checks if this object is equal to another. This method only returns true for another identical production pattern element.

GetHashCode

public override int GetHashCode();

Returns a hash code for this object.

GetId

public int GetId();

Deprecated. Use the Id property instead.
Returns the node identity.

GetMaxCount

public int GetMaxCount();

Deprecated. Use the MaxCount property instead.
Returns the maximum occurence count.

GetMinCount

public int GetMinCount();

Deprecated. Use the MinCount property instead.
Returns the minimum occurence count.

IsMatch

public bool IsMatch( Token token );

Checks if a specific token matches this element. This method will only return true if this element is a token element, and the token has the same id and this element.

IsProduction

public bool IsProduction();

Returns true if this element represents a production.

IsToken

public bool IsToken();

Returns true if this element represents a token.

ToString

public override string ToString();

Returns a string representation of this object.