435c0d9fc8
This PR switches the Nomad repository from using govendor to Go modules for managing dependencies. Aspects of the Nomad workflow remain pretty much the same. The usual Makefile targets should continue to work as they always did. The API submodule simply defers to the parent Nomad version on the repository, keeping the semantics of API versioning that currently exists.
50 lines
1.4 KiB
Go
50 lines
1.4 KiB
Go
package jmespath
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import "strconv"
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// JMESPath is the epresentation of a compiled JMES path query. A JMESPath is
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// safe for concurrent use by multiple goroutines.
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type JMESPath struct {
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ast ASTNode
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intr *treeInterpreter
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}
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// Compile parses a JMESPath expression and returns, if successful, a JMESPath
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// object that can be used to match against data.
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func Compile(expression string) (*JMESPath, error) {
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parser := NewParser()
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ast, err := parser.Parse(expression)
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if err != nil {
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return nil, err
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}
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jmespath := &JMESPath{ast: ast, intr: newInterpreter()}
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return jmespath, nil
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}
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// MustCompile is like Compile but panics if the expression cannot be parsed.
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// It simplifies safe initialization of global variables holding compiled
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// JMESPaths.
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func MustCompile(expression string) *JMESPath {
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jmespath, err := Compile(expression)
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if err != nil {
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panic(`jmespath: Compile(` + strconv.Quote(expression) + `): ` + err.Error())
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}
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return jmespath
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}
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// Search evaluates a JMESPath expression against input data and returns the result.
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func (jp *JMESPath) Search(data interface{}) (interface{}, error) {
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return jp.intr.Execute(jp.ast, data)
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}
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// Search evaluates a JMESPath expression against input data and returns the result.
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func Search(expression string, data interface{}) (interface{}, error) {
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intr := newInterpreter()
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parser := NewParser()
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ast, err := parser.Parse(expression)
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if err != nil {
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return nil, err
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}
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return intr.Execute(ast, data)
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}
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