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vendor/github.com/aws/aws-sdk-go/private/model/api/pagination.go

@@ -0,0 +1,91 @@
+// +build codegen
+
+package api
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+)
+
+// Paginator keeps track of pagination configuration for an API operation.
+type Paginator struct {
+	InputTokens  interface{} `json:"input_token"`
+	OutputTokens interface{} `json:"output_token"`
+	LimitKey     string      `json:"limit_key"`
+	MoreResults  string      `json:"more_results"`
+}
+
+// InputTokensString returns output tokens formatted as a list
+func (p *Paginator) InputTokensString() string {
+	str := p.InputTokens.([]string)
+	return fmt.Sprintf("%#v", str)
+}
+
+// OutputTokensString returns output tokens formatted as a list
+func (p *Paginator) OutputTokensString() string {
+	str := p.OutputTokens.([]string)
+	return fmt.Sprintf("%#v", str)
+}
+
+// used for unmarshaling from the paginators JSON file
+type paginationDefinitions struct {
+	*API
+	Pagination map[string]Paginator
+}
+
+// AttachPaginators attaches pagination configuration from filename to the API.
+func (a *API) AttachPaginators(filename string) {
+	p := paginationDefinitions{API: a}
+
+	f, err := os.Open(filename)
+	defer f.Close()
+	if err != nil {
+		panic(err)
+	}
+	err = json.NewDecoder(f).Decode(&p)
+	if err != nil {
+		panic(err)
+	}
+
+	p.setup()
+}
+
+// setup runs post-processing on the paginator configuration.
+func (p *paginationDefinitions) setup() {
+	for n, e := range p.Pagination {
+		if e.InputTokens == nil || e.OutputTokens == nil {
+			continue
+		}
+		paginator := e
+
+		switch t := paginator.InputTokens.(type) {
+		case string:
+			paginator.InputTokens = []string{t}
+		case []interface{}:
+			toks := []string{}
+			for _, e := range t {
+				s := e.(string)
+				toks = append(toks, s)
+			}
+			paginator.InputTokens = toks
+		}
+		switch t := paginator.OutputTokens.(type) {
+		case string:
+			paginator.OutputTokens = []string{t}
+		case []interface{}:
+			toks := []string{}
+			for _, e := range t {
+				s := e.(string)
+				toks = append(toks, s)
+			}
+			paginator.OutputTokens = toks
+		}
+
+		if o, ok := p.Operations[n]; ok {
+			o.Paginator = &paginator
+		} else {
+			panic("unknown operation for paginator " + n)
+		}
+	}
+}