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75513575be
* store dependency's in git * since we vendor ... rm tech-depts * aad make target 'vendor' to update vendor folder (manual task)
51 lines
1.4 KiB
Go
51 lines
1.4 KiB
Go
package expr
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import "github.com/woodpecker-ci/expr/parse"
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// Selector reprents a parsed SQL selector statement.
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type Selector struct {
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*parse.Tree
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}
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// Parse parses the SQL statement and returns a new Statement object.
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func Parse(b []byte) (selector *Selector, err error) {
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selector = new(Selector)
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selector.Tree, err = parse.Parse(b)
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return
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}
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// ParseString parses the SQL statement and returns a new Statement object.
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func ParseString(s string) (selector *Selector, err error) {
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return Parse([]byte(s))
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}
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// Eval evaluates the SQL statement using the provided data and returns true
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// if all conditions are satisfied. If a runtime error is experiences a false
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// value is returned along with an error message.
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func (s *Selector) Eval(row Row) (match bool, err error) {
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defer errRecover(&err)
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state := &state{vars: row}
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match = state.walk(s.Root)
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return
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}
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// Row defines a row of columnar data.
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//
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// Note that the field name and field values are represented as []byte
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// since stomp header names and values are represented as []byte to avoid
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// extra allocations when converting from []byte to string.
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type Row interface {
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Field([]byte) []byte
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}
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// NewRow return a Row bound to a map of key value strings.
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func NewRow(m map[string]string) Row {
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return mapRow(m)
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}
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type mapRow map[string]string
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func (m mapRow) Field(name []byte) []byte {
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return []byte(m[string(name)])
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}
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