Merged in jb/openapi (pull request #22)

add openapi infra

* add openapi infra

Includes generated stubs and all deps

* generatetolocation

* basesetupoffunctionsandclient

* round1controllertests

* passintegrationtests

* cleanupfromfullsuite

* storedjson

* fixjsonyaml

* fixtests


Approved-by: Michael McGuinness

vendor/github.com/getkin/kin-openapi/openapi3/schema_pattern.go

@@ -0,0 +1,35 @@
+package openapi3
+
+import (
+	"fmt"
+	"regexp"
+)
+
+var patRewriteCodepoints = regexp.MustCompile(`(?P<replaced_with_slash_x>\\u)(?P<code>[0-9A-F]{4})`)
+
+// See https://pkg.go.dev/regexp/syntax
+func intoGoRegexp(re string) string {
+	return patRewriteCodepoints.ReplaceAllString(re, `\x{${code}}`)
+}
+
+// NOTE: racey WRT [writes to schema.Pattern] vs [reads schema.Pattern then writes to compiledPatterns]
+func (schema *Schema) compilePattern(c RegexCompilerFunc) (cp RegexMatcher, err error) {
+	pattern := schema.Pattern
+	if c != nil {
+		cp, err = c(pattern)
+	} else {
+		cp, err = regexp.Compile(intoGoRegexp(pattern))
+	}
+	if err != nil {
+		err = &SchemaError{
+			Schema:      schema,
+			SchemaField: "pattern",
+			Origin:      err,
+			Reason:      fmt.Sprintf("cannot compile pattern %q: %v", pattern, err),
+		}
+		return
+	}
+
+	var _ bool = compiledPatterns.CompareAndSwap(pattern, nil, cp)
+	return
+}