mirror of
https://github.com/hanzoai/expr.git
synced 2026-09-24 16:58:58 +00:00
Anton Medvedev
894c3c96b1
This commits implements more advance type checks in strict mode. To enter strict mode set variable types with expr.Define() or expr.With() functions.
96 lines
1.1 KiB
Go
96 lines
1.1 KiB
Go
package expr
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import (
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"regexp"
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)
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// Node represents items of abstract syntax tree.
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type Node interface {
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Type(table typesTable) (Type, error)
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Eval(env interface{}) (interface{}, error)
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}
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type nilNode struct{}
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type identifierNode struct {
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value string
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}
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type numberNode struct {
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value float64
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}
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type boolNode struct {
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value bool
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}
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type textNode struct {
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value string
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}
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type nameNode struct {
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name string
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}
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type unaryNode struct {
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operator string
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node Node
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}
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type binaryNode struct {
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operator string
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left Node
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right Node
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}
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type matchesNode struct {
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r *regexp.Regexp
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left Node
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right Node
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}
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type propertyNode struct {
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node Node
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property string
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}
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type indexNode struct {
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node Node
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index Node
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}
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type methodNode struct {
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node Node
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method string
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arguments []Node
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}
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type builtinNode struct {
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name string
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arguments []Node
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}
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type functionNode struct {
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name string
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arguments []Node
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}
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type conditionalNode struct {
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cond Node
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exp1 Node
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exp2 Node
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}
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type arrayNode struct {
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nodes []Node
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}
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type mapNode struct {
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pairs []pairNode
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}
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type pairNode struct {
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key Node
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value Node
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}
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