GlyphTable.ChainedCoverageSequenceRule (Apache FOP Core 2.11 API)
Date: 2025-04-24

org.apache.fop.complexscripts.fonts

## Class GlyphTable.ChainedCoverageSequenceRule

- java.lang.Object
- - org.apache.fop.complexscripts.fonts.GlyphTable.Rule
  - - org.apache.fop.complexscripts.fonts.GlyphTable.CoverageSequenceRule
    - - org.apache.fop.complexscripts.fonts.GlyphTable.ChainedCoverageSequenceRule

- Enclosing class:
    GlyphTable

      public static class GlyphTable.ChainedCoverageSequenceRule
      extends GlyphTable.CoverageSequenceRule

  The `ChainedCoverageSequenceRule` class implements a subclass of `CoverageSequenceRule` that supports matching on a specific glyph class sequence in a specific chained contextual.

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `ChainedCoverageSequenceRule(GlyphTable.RuleLookup[] lookups, int inputSequenceLength, GlyphCoverageTable[] coverages, GlyphCoverageTable[] backtrackCoverages, GlyphCoverageTable[] lookaheadCoverages)` Instantiate a ChainedCoverageSequenceRule.

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `GlyphCoverageTable[]` | `getBacktrackCoverages()`
    `GlyphCoverageTable[]` | `getLookaheadCoverages()`
    `String` | `toString()`

    - ### Methods inherited from class org.apache.fop.complexscripts.fonts.GlyphTable.CoverageSequenceRule

      `getCoverages`

    - ### Methods inherited from class org.apache.fop.complexscripts.fonts.GlyphTable.Rule

      `getInputSequenceLength, getLookups, resolveLookupReferences`

    - ### Methods inherited from class java.lang.Object

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

- - ### Constructor Detail

    - #### ChainedCoverageSequenceRule

          public ChainedCoverageSequenceRule(GlyphTable.RuleLookup[] lookups,
                                             int inputSequenceLength,
                                             GlyphCoverageTable[] coverages,
                                             GlyphCoverageTable[] backtrackCoverages,
                                             GlyphCoverageTable[] lookaheadCoverages)

      Instantiate a ChainedCoverageSequenceRule.
      Parameters:
        `lookups` - the rule's lookups
        `inputSequenceLength` - number of glyphs constituting input sequence (to be consumed)
        `coverages` - the rule's input glyph class sequence to match, starting with first glyph in sequence
        `backtrackCoverages` - the rule's backtrack glyph class sequence to match, starting with first glyph in sequence
        `lookaheadCoverages` - the rule's lookahead glyph class sequence to match, starting with first glyph in sequence

  - ### Method Detail

    - #### getBacktrackCoverages

          public GlyphCoverageTable[] getBacktrackCoverages()

      Returns:
        the backtrack coverages

    - #### getLookaheadCoverages

          public GlyphCoverageTable[] getLookaheadCoverages()

      Returns:
        the lookahead coverages

    - #### toString

          public String toString()

      Overrides:
        `toString` in class `GlyphTable.CoverageSequenceRule`

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