99 lines
2.9 KiB
Go
99 lines
2.9 KiB
Go
package xpath
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import "errors"
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// XPathStep represents a single step in an XPath expression
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type XPathStep struct {
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Type StepType
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Name string
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Predicate *Predicate
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}
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// StepType defines the type of XPath step
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type StepType int
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const (
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// RootStep represents the root step (/)
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RootStep StepType = iota
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// ChildStep represents a child element step (element)
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ChildStep
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// RecursiveDescentStep represents a recursive descent step (//)
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RecursiveDescentStep
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// WildcardStep represents a wildcard step (*)
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WildcardStep
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// PredicateStep represents a predicate condition step ([...])
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PredicateStep
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)
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// PredicateType defines the type of XPath predicate
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type PredicateType int
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const (
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// IndexPredicate represents an index predicate [n]
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IndexPredicate PredicateType = iota
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// LastPredicate represents a last() function predicate
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LastPredicate
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// LastMinusPredicate represents a last()-n predicate
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LastMinusPredicate
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// PositionPredicate represents position()-based predicates
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PositionPredicate
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// AttributeExistsPredicate represents [@attr] predicate
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AttributeExistsPredicate
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// AttributeEqualsPredicate represents [@attr='value'] predicate
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AttributeEqualsPredicate
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// ComparisonPredicate represents element comparison predicates
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ComparisonPredicate
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)
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// Predicate represents a condition in XPath
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type Predicate struct {
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Type PredicateType
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Index int
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Offset int
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Attribute string
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Value string
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Expression string
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}
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// XMLNode represents a node in the result set with its value and path
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type XMLNode struct {
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Value interface{}
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Path string
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}
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// ParseXPath parses an XPath expression into a series of steps
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func ParseXPath(path string) ([]XPathStep, error) {
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if path == "" {
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return nil, errors.New("empty path")
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}
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// This is just a placeholder implementation for the tests
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// The actual implementation would parse the XPath expression
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return nil, errors.New("not implemented")
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}
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// Get retrieves nodes from XML data using an XPath expression
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func Get(data interface{}, path string) ([]XMLNode, error) {
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if data == "" {
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return nil, errors.New("empty XML data")
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}
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// This is just a placeholder implementation for the tests
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// The actual implementation would evaluate the XPath against the XML
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return nil, errors.New("not implemented")
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}
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// Set updates a node in the XML data using an XPath expression
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func Set(xmlData string, path string, value interface{}) (string, error) {
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// This is just a placeholder implementation for the tests
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// The actual implementation would modify the XML based on the XPath
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return "", errors.New("not implemented")
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}
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// SetAll updates all nodes matching an XPath expression in the XML data
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func SetAll(xmlData string, path string, value interface{}) (string, error) {
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// This is just a placeholder implementation for the tests
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// The actual implementation would modify all matching nodes
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return "", errors.New("not implemented")
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}
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