initial pass at deferred commands

taskfile/cmd.go

@@ -7,6 +7,7 @@ type Cmd struct {
 	Task        string
 	Vars        *Vars
 	IgnoreError bool
+	Defer       bool
 }
 
 // Dep is a task dependency
@@ -33,6 +34,18 @@ func (c *Cmd) UnmarshalYAML(unmarshal func(interface{}) error) error {
 		c.IgnoreError = cmdStruct.IgnoreError
 		return nil
 	}
+	var deferredCmd struct {
+		Defer string
+	}
+	if err := unmarshal(&deferredCmd); err == nil && deferredCmd.Defer != "" {
+		c.Defer = true
+		if strings.HasPrefix(deferredCmd.Defer, "^") {
+			c.Task = strings.TrimPrefix(deferredCmd.Defer, "^")
+		} else {
+			c.Cmd = deferredCmd.Defer
+		}
+		return nil
+	}
 	var taskCall struct {
 		Task string
 		Vars *Vars

taskfile/taskfile_test.go

@@ -19,6 +19,8 @@ vars:
   PARAM1: VALUE1
   PARAM2: VALUE2
 `
+		yamlDeferredTask = `defer: ^some_task`
+		yamlDeferredCmd  = `defer: echo 'test'`
 	)
 	tests := []struct {
 		content  string
@@ -41,6 +43,16 @@ vars:
 				},
 			}},
 		},
+		{
+			yamlDeferredCmd,
+			&taskfile.Cmd{},
+			&taskfile.Cmd{Cmd: "echo 'test'", Defer: true},
+		},
+		{
+			yamlDeferredTask,
+			&taskfile.Cmd{},
+			&taskfile.Cmd{Task: "some_task", Defer: true},
+		},
 		{
 			yamlDep,
 			&taskfile.Dep{},