-
Notifications
You must be signed in to change notification settings - Fork 9
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge pull request #317 from leviysoft/feature/xpath-support
XPath support
- Loading branch information
Showing
11 changed files
with
1,025 additions
and
3 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
173 changes: 173 additions & 0 deletions
173
xpath/src/main/scala/advxml/xpath/XmlPredicateBuilder.scala
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,173 @@ | ||
| package advxml.xpath | ||
|
|
||
| import advxml.data.Key | ||
| import advxml.data.SimpleValue | ||
| import advxml.data.XmlPredicate | ||
| import advxml.implicits.* | ||
| import advxml.xpath.error.XPathError | ||
| import cats.Endo | ||
| import cats.data.ValidatedNel | ||
| import cats.syntax.apply.* | ||
| import cats.syntax.foldable.* | ||
| import cats.syntax.traverse.* | ||
| import cats.syntax.validated.* | ||
| import eu.cdevreeze.xpathparser.ast.* | ||
|
|
||
| object XmlPredicateBuilder { | ||
| def build(expr: Expr): ValidatedNel[XPathError.NotSupportedConstruction, XmlPredicate] = | ||
| expr match { | ||
| case expr: CompoundComparisonExpr => buildCCE(expr) | ||
| case expr: RelativePathExpr => buildRPE(expr).map(_(_ => true)) | ||
| case CompoundOrExpr(head, tail) => | ||
| import advxml.xpath.utils.predicate.or.* | ||
| (build(head), tail.traverse(build(_))).mapN(_ +: _).map(_.combineAll) | ||
| case CompoundAndExpr(head, tail) => | ||
| import advxml.xpath.utils.predicate.and.* | ||
| (build(head), tail.traverse(build(_))).mapN(_ +: _).map(_.combineAll) | ||
| case e => notSupported(e) | ||
| } | ||
|
|
||
| def buildCCE( | ||
| expr: CompoundComparisonExpr | ||
| ): ValidatedNel[XPathError.NotSupportedConstruction, XmlPredicate] = | ||
| expr match { | ||
| case CompoundComparisonExpr( | ||
| cpe @ CompoundOrExact( | ||
| ForwardAxisStep( | ||
| AttributeAxisAbbrevForwardStep(SimpleNameTest(EQNameEx(name))), | ||
| EmptySeq() | ||
| ) | ||
| ), | ||
| GeneralComp.Eq, | ||
| StringLiteral(value) | ||
| ) => | ||
| buildRPE(cpe).map(p => p(XmlPredicate.attrs(Key(name) === value))) | ||
|
|
||
| case CompoundComparisonExpr( | ||
| cpe @ CompoundOrExact( | ||
| ForwardAxisStep(SimpleAbbrevForwardStep(SimpleNameTest(_)), EmptySeq()) | ||
| ), | ||
| comp: GeneralComp, | ||
| IntegerLiteral(value) | ||
| ) => | ||
| buildRPE(cpe).map(p => | ||
| p(XmlPredicate.text(_.asOption[Int].exists(comp match { | ||
| case GeneralComp.Eq => _ == value.toInt | ||
| case GeneralComp.Ne => _ != value.toInt | ||
| case GeneralComp.Lt => _ < value.toInt | ||
| case GeneralComp.Le => _ <= value.toInt | ||
| case GeneralComp.Gt => _ > value.toInt | ||
| case GeneralComp.Ge => _ >= value.toInt | ||
| }))) | ||
| ) | ||
|
|
||
| case CompoundComparisonExpr( | ||
| cpe @ CompoundOrExact(ForwardAxisStep(SimpleAbbrevForwardStep(TextTest), EmptySeq())), | ||
| GeneralComp.Eq, | ||
| StringLiteral(value) | ||
| ) => | ||
| buildRPE(cpe).map(p => p(XmlPredicate.text(_ == value))) | ||
|
|
||
| case e => notSupported(e) | ||
| } | ||
|
|
||
| def buildRPE( | ||
| expr: RelativePathExpr | ||
| ): ValidatedNel[XPathError.NotSupportedConstruction, Endo[XmlPredicate]] = | ||
| expr match { | ||
| case ForwardAxisStep(SimpleAbbrevForwardStep(SimpleNameTest(EQNameEx(name))), EmptySeq()) => | ||
| xpred(XmlPredicate.hasImmediateChild(name, _)).validNel | ||
|
|
||
| case CompoundRelativePathExpr(init, StepOp.SingleSlash, lastStep) => | ||
| (buildRPE(init), buildRPE(lastStep)).mapN { case (init, last) => init.andThen(last) } | ||
|
|
||
| case ForwardAxisStep(SimpleAbbrevForwardStep(TextTest), EmptySeq()) => | ||
| (identity[XmlPredicate] _).validNel | ||
|
|
||
| case ForwardAxisStep(AttributeAxisAbbrevForwardStep(SimpleNameTest(_)), EmptySeq()) => | ||
| (identity[XmlPredicate] _).validNel | ||
|
|
||
| case FunctionCall( | ||
| EQNameEx(fn @ ("contains" | "starts-with" | "ends-with")), | ||
| ArgumentList( | ||
| UnSeq( | ||
| ExprSingleArgument(ForwardAxisStep(SimpleAbbrevForwardStep(TextTest), EmptySeq())), | ||
| ExprSingleArgument(StringLiteral(value)) | ||
| ) | ||
| ) | ||
| ) => | ||
| fn match { | ||
| case "contains" => const(XmlPredicate.text(_.contains(value))).validNel | ||
| case "starts-with" => const(XmlPredicate.text(_.startsWith(value))).validNel | ||
| case "ends-with" => const(XmlPredicate.text(_.endsWith(value))).validNel | ||
| } | ||
|
|
||
| case FunctionCall( | ||
| EQNameEx(fn @ ("contains" | "starts-with" | "ends-with")), | ||
| ArgumentList( | ||
| UnSeq( | ||
| ExprSingleArgument( | ||
| ForwardAxisStep( | ||
| AttributeAxisAbbrevForwardStep(SimpleNameTest(EQNameEx(attr))), | ||
| EmptySeq() | ||
| ) | ||
| ), | ||
| ExprSingleArgument(StringLiteral(value)) | ||
| ) | ||
| ) | ||
| ) => | ||
| fn match { | ||
| case "contains" => | ||
| const( | ||
| XmlPredicate.attrs( | ||
| Key(attr) -> ((_: SimpleValue).asOption[String].exists(_.contains(value))) | ||
| ) | ||
| ).validNel | ||
|
|
||
| case "starts-with" => | ||
| const( | ||
| XmlPredicate.attrs( | ||
| Key(attr) -> ((_: SimpleValue).asOption[String].exists(_.startsWith(value))) | ||
| ) | ||
| ).validNel | ||
|
|
||
| case "ends-with" => | ||
| const( | ||
| XmlPredicate.attrs( | ||
| Key(attr) -> ((_: SimpleValue).asOption[String].exists(_.endsWith(value))) | ||
| ) | ||
| ).validNel | ||
| } | ||
|
|
||
| case FunctionCall( | ||
| EQNameEx("not"), | ||
| ArgumentList( | ||
| UnSeq( | ||
| ExprSingleArgument(fc: FunctionCall) | ||
| ) | ||
| ) | ||
| ) => | ||
| buildRPE(fc).map(pred => pred.andThen(_.andThen(!_))) | ||
|
|
||
| case e => notSupported(e) | ||
| } | ||
|
|
||
| private def notSupported( | ||
| feature: XPathElem | ||
| ): ValidatedNel[XPathError.NotSupportedConstruction, Nothing] = | ||
| XPathError.NotSupportedConstruction(feature).invalidNel | ||
|
|
||
| @inline | ||
| private def xpred(f: Endo[XmlPredicate]): Endo[XmlPredicate] = f | ||
|
|
||
| @inline | ||
| private def const(p: XmlPredicate): Endo[XmlPredicate] = _ => p | ||
|
|
||
| private object CompoundOrExact { | ||
| def unapply(expr: RelativePathExpr): Option[StepExpr] = | ||
| expr match { | ||
| case se: StepExpr => Some(se) | ||
| case crpe: CompoundRelativePathExpr => Some(crpe.lastStepExpr) | ||
| } | ||
| } | ||
| } |
Oops, something went wrong.