2017-06-26 21:36:05 +02:00
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package expressions
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// Context is the expression evaluation context. It maps variables names to values.
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type Context interface {
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Get(string) interface{}
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Set(string, interface{})
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2017-07-02 05:52:23 +02:00
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Filters() *filterDictionary
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2017-06-26 21:36:05 +02:00
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}
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type context struct {
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2017-07-01 03:05:48 +02:00
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bindings map[string]interface{}
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2017-07-04 17:08:57 +02:00
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Config
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2017-06-26 21:36:05 +02:00
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}
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2017-06-27 19:36:38 +02:00
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// NewContext makes a new expression evaluation context.
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2017-07-04 17:08:57 +02:00
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func NewContext(vars map[string]interface{}, s Config) Context {
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2017-07-01 03:05:48 +02:00
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return &context{vars, s}
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2017-06-30 22:13:18 +02:00
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}
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2017-07-02 05:52:23 +02:00
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func (c *context) Filters() *filterDictionary {
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2017-06-30 22:13:18 +02:00
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return c.filters
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2017-06-26 21:36:05 +02:00
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}
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2017-06-27 19:36:38 +02:00
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// Get looks up a variable value in the expression context.
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2017-06-26 21:36:05 +02:00
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func (c *context) Get(name string) interface{} {
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2017-07-03 18:00:43 +02:00
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return ToLiquid(c.bindings[name])
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2017-06-26 21:36:05 +02:00
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}
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2017-06-27 19:36:38 +02:00
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// Set sets a variable value in the expression context.
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2017-06-26 21:36:05 +02:00
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func (c *context) Set(name string, value interface{}) {
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2017-07-01 03:05:48 +02:00
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c.bindings[name] = value
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2017-06-26 21:36:05 +02:00
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}
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