Added basic functionality

Context.go

@@ -0,0 +1,51 @@
+package aero
+
+import (
+	"net/http"
+)
+
+// maxParams defines the maximum number of parameters per route.
+const maxParams = 16
+
+// Context represents the interface for a request & response context.
+type Context interface {
+	Bytes([]byte) error
+	Error(int, error) error
+}
+
+// context represents a request & response context.
+type context struct {
+	request     *http.Request
+	response    http.ResponseWriter
+	paramNames  [maxParams]string
+	paramValues [maxParams]string
+	paramCount  int
+}
+
+// newContext returns a new context from the pool.
+func newContext(request *http.Request, response http.ResponseWriter) *context {
+	ctx := contextPool.Get().(*context)
+	ctx.request = request
+	ctx.response = response
+	ctx.paramCount = 0
+	return ctx
+}
+
+// Bytes responds with a raw byte slice.
+func (ctx *context) Bytes(body []byte) error {
+	_, err := ctx.response.Write(body)
+	return err
+}
+
+// Error is used for sending error messages to the client.
+func (ctx *context) Error(status int, err error) error {
+	ctx.response.WriteHeader(status)
+	return err
+}
+
+// addParameter adds a new parameter to the context.
+func (ctx *context) addParameter(name string, value string) {
+	ctx.paramNames[ctx.paramCount] = name
+	ctx.paramValues[ctx.paramCount] = value
+	ctx.paramCount++
+}