Default
SingleElementContextMatcher that delegates to the given function f to perform its match.
Type parameters
- A
-
The matched context type
Value parameters
- f
-
A function that performs the context match on a single element
Attributes
- Graph
-
- Supertypes
-
class Objecttrait Matchableclass Any
Members list
Value members
Concrete methods
The matching operation for single-element matchers.
The matching operation for single-element matchers.
Value parameters
- elem
-
The first element in the XML tag stack
Attributes
- Returns
-
Some(context)for a successful match,Noneotherwise
Inherited methods
Operator version of and
Create a new matcher by forming a chain with this matcher at the front, and the next matcher at the back. In other words, a matcher for a context within another context.
Create a new matcher by forming a chain with this matcher at the front, and the next matcher at the back. In other words, a matcher for a context within another context.
Type parameters
- A1
-
To satisfy covariance on A
- B
-
The
nextmatcher's context type - R
-
The "reduced" content type, derived from the tuple type
(A, B)based on thereducerule.
Value parameters
- next
-
A matcher which will be used to match the "inner" context
- reduce
-
The
TypeReducerule to help omitUnitfrom the resulting context type
Attributes
- Returns
-
A matcher which delegates to
thismatcher first, then thenextmatcher for the remaining stack. - Inherited from:
- ContextMatcher
Creates a new single-element matcher which combines the results of both this matcher and that matcher. Both this and that will operate on the first element of the stack (as opposed to Chained matchers).
Creates a new single-element matcher which combines the results of both this matcher and that matcher. Both this and that will operate on the first element of the stack (as opposed to Chained matchers).
Type parameters
- A1
-
To satisfy covariance on A
- B
-
The other matcher's result type
- R
-
The combined result type
Value parameters
- reduce
-
The
TypeReducerule for combining the two match results - that
-
The matcher to combine
Attributes
- Returns
-
A new matcher which combines the results of
thisandthat - Inherited from:
- SingleItemContextMatcher
The main context match method.
The main context match method.
Inspects the elements in the XML "tag stack", which is essentially a List[StartElement], but for performance reasons is represented as an array with an "offset" index and a number of available elements from that offset. If the elements correspond to a context value of A, the implementation must then pass the remaining elements of the stack to the next matcher, i.e. by calling next(stack, offset + numConsumed, avail - numConsumed).
The difference between this method and applyChained is the lack of the next parameter; in this method, the current matcher is assumed to be the end of the chain.
Value parameters
- avail
-
The number of elements available in the
stackstarting from theoffset. - offset
-
The index of the first element to be considered by the matching logic. From this method's point of view, the "first" element in the stack is actually at
stack(offset) - stack
-
A reference to the complete XML "tag stack". Note that the responsibility of this method is limited to a slice of this value, as defined by
offsetandavail.
Attributes
- Returns
-
An option containing the successfully-matched context, or
None. - Inherited from:
- ContextMatcher
The underlying context match method.
The underlying context match method.
Inspects the elements in the XML "tag stack", which is essentially a List[StartElement], but for performance reasons is represented as an array with an "offset" index and a number of available elements from that offset. If the elements correspond to a context value of A, the implementation must then pass the remaining elements of the stack to the next matcher, i.e. by calling next(stack, offset + numConsumed, avail - numConsumed).
The next matcher is necessary in order to support non-greedy matchers, e.g. ContextMatcher.variableLength, a.k.a. **. Without a reference to the next matcher in the chain, matcher implementations would be forced to pick a fixed number of elements for matching, never knowing that the overall match could have succeeded if they had consumed some additional elements.
Type parameters
- B
-
The
nextmatcher's context type
Value parameters
- avail
-
The number of elements available in the
stackstarting from theoffset. - next
-
The next matcher in the chain.
- offset
-
The index of the first element to be considered by the matching logic. From this method's point of view, the "first" element in the stack is actually at
stack(offset) - stack
-
A reference to the complete XML "tag stack". Note that the responsibility of this method is limited to a slice of this value, as defined by
offsetandavail.
Attributes
- Returns
-
If the match succeeded, and the
nextmatch succeded, an Option containing a tuple of both match results. If the match failed, or if thenextmatch failed,None. - Inherited from:
- SingleItemContextMatcher
Create a new ContextMatcher which takes the match result of this matcher and passes it through the validation function f. If f returns false, the match is unsuccessful.
Create a new ContextMatcher which takes the match result of this matcher and passes it through the validation function f. If f returns false, the match is unsuccessful.
Value parameters
- p
-
The filter predicate, i.e. the validation function
Attributes
- Returns
-
A new matcher with validated results
- Definition Classes
- Inherited from:
- SingleItemContextMatcher
Create a new ContextMatcher which takes the match result of this matcher and passes it through the combined transformation/validation function f. If f returns None, the match is unsuccessful; if f returns a Some, the value inside is the result of the match.
Create a new ContextMatcher which takes the match result of this matcher and passes it through the combined transformation/validation function f. If f returns None, the match is unsuccessful; if f returns a Some, the value inside is the result of the match.
Type parameters
- B
-
The transformed context type
Value parameters
- f
-
The transformation/validation function
Attributes
- Returns
-
A new matcher with transformed and validated results
- Definition Classes
- Inherited from:
- SingleItemContextMatcher
Create a new ContextMatcher which takes the match result of this matcher and passes it through the transformation function f.
Create a new ContextMatcher which takes the match result of this matcher and passes it through the transformation function f.
Type parameters
- B
-
The transformed context type
Value parameters
- f
-
The transformation function
Attributes
- Returns
-
A new matcher with transformed results
- Definition Classes
- Inherited from:
- SingleItemContextMatcher
Specialization of the default or method, specifically for SingleElementContextMatchers
Specialization of the default or method, specifically for SingleElementContextMatchers
Attributes
- Inherited from:
- SingleItemContextMatcher
Create a new ContextMatcher which will fall back to a second matcher in the event that this matcher fails to match a context.
Create a new ContextMatcher which will fall back to a second matcher in the event that this matcher fails to match a context.
Type parameters
- A2
-
The resulting context type (common supertype between this matcher and
that)
Value parameters
- that
-
The matcher which will be used as the fallback
Attributes
- Returns
-
A matcher that falls back to another matcher in case of failure
- Inherited from:
- ContextMatcher
Operator version of or, specialized for SingleElementContextMatchers
Operator version of or, specialized for SingleElementContextMatchers
Attributes
- Inherited from:
- SingleItemContextMatcher
Operator version of or