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Prepare gremlin for introduction of a worker type

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This commit is contained in:
kortschak 2014-08-25 15:57:40 +09:30
parent a96f2ef6f3
commit 95170eb8ed
5 changed files with 141 additions and 160 deletions
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43
query/gremlin/environ.go
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@ -21,31 +21,25 @@ import (
"github.com/robertkrimen/otto"
)
func BuildEnviron(ses *Session) *otto.Otto {
env := otto.New()
setupGremlin(env, ses)
return env
}
func concatStringArgs(call otto.FunctionCall) *[]interface{} {
outStrings := make([]interface{}, 0)
func argsOf(call otto.FunctionCall) []string {
var out []string
for _, arg := range call.ArgumentList {
if arg.IsString() {
outStrings = append(outStrings, arg.String())
out = append(out, arg.String())
}
if arg.IsObject() && arg.Class() == "Array" {
obj, _ := arg.Export()
for _, x := range obj.([]interface{}) {
outStrings = append(outStrings, x.(string))
out = append(out, x.(string))
}
}
}
return &outStrings
return out
}
func isVertexChain(obj *otto.Object) bool {
val, _ := obj.Get("_gremlin_type")
if x, _ := val.ToString(); x == "vertex" {
if val.String() == "vertex" {
return true
}
val, _ = obj.Get("_gremlin_prev")
@ -55,8 +49,10 @@ func isVertexChain(obj *otto.Object) bool {
return false
}
func setupGremlin(env *otto.Otto, ses *Session) {
func (s *Session) setup(env *otto.Otto) *otto.Otto {
graph, _ := env.Object("graph = {}")
env.Run("g = graph")
graph.Set("Vertex", func(call otto.FunctionCall) otto.Value {
call.Otto.Run("var out = {}")
out, err := call.Otto.Object("out")
@ -65,31 +61,32 @@ func setupGremlin(env *otto.Otto, ses *Session) {
return otto.TrueValue()
}
out.Set("_gremlin_type", "vertex")
outStrings := concatStringArgs(call)
if len(*outStrings) > 0 {
out.Set("string_args", *outStrings)
args := argsOf(call)
if len(args) > 0 {
out.Set("string_args", args)
}
embedTraversals(env, ses, out)
embedFinals(env, ses, out)
s.embedTraversals(env, out)
s.embedFinals(env, out)
return out.Value()
})
env.Run("graph.V = graph.Vertex")
graph.Set("Morphism", func(call otto.FunctionCall) otto.Value {
call.Otto.Run("var out = {}")
out, _ := call.Otto.Object("out")
out.Set("_gremlin_type", "morphism")
embedTraversals(env, ses, out)
s.embedTraversals(env, out)
return out.Value()
})
env.Run("graph.M = graph.Morphism")
graph.Set("Emit", func(call otto.FunctionCall) otto.Value {
value := call.Argument(0)
if value.IsDefined() {
ses.SendResult(&Result{val: &value})
s.SendResult(&Result{val: &value})
}
return otto.NullValue()
})
env.Run("graph.V = graph.Vertex")
env.Run("graph.M = graph.Morphism")
env.Run("g = graph")
return env
}