March 2001
Intermediate to advanced
400 pages
8h 35m
English
Content preview from Building Parsers with Java™
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10.5. Sequence Matching
A Sequence parser holds a collection of parsers that must each, in turn, match against an assembly. Matching is the main service that the Sequence class provides, as Figure 10.4 shows.
Figure 10.4. The Sequence class. Sequence implements match() so that matching succeeds only if all the parsers in its collection match in succession.
When a sequence matches, it matches against an input collection of assemblies. To perform the match, the sequence matches its first subparser against each assembly in the collection. The result is a new collection of assemblies, all having one property in common: They all are assemblies that ...
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