9e216da9ef
After go1.16, go will use module mode by default, even when the repository is checked out under GOPATH or in a one-off directory. Add go.mod, go.sum to keep this repo buildable without opting out of the module mode. > go mod init github.com/mmcgrana/gobyexample > go mod tidy > go mod vendor In module mode, the 'vendor' directory is special and its contents will be actively maintained by the go command. pygments aren't the dependency the go will know about, so it will delete the contents from vendor directory. Move it to `third_party` directory now. And, vendor the blackfriday package. Note: the tutorial contents are not affected by the change in go1.16 because all the examples in this tutorial ask users to run the go command with the explicit list of files to be compiled (e.g. `go run hello-world.go` or `go build command-line-arguments.go`). When the source list is provided, the go command does not have to compute the build list and whether it's running in GOPATH mode or module mode becomes irrelevant.
97 lines
2.5 KiB
Groovy
97 lines
2.5 KiB
Groovy
// This source code comes from http://www.odelia-technologies.com/node/200
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package com.odelia.groovy.simpleworkflow
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class SimpleWorkflowEngine {
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def workflowMap = [:]
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def context = [:]
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def beforeActivityName = 'beforeActivity'
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def afterActivityName = 'afterActivity'
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SimpleWorkflowEngine(workflow, context = [:]) {
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this.context = context
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parseWorkflow(workflow)
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}
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def parseWorkflow(workflow) {
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workflowMap = new WorkflowParser().parse(workflow)
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}
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def getActivityValue(activity) {
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assert activity instanceof String
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if (!workflowMap[activity])
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throw new RuntimeException("$activity activity doesn't exist")
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workflowMap[activity]
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}
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def execute(activity, pause) {
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if (workflowMap[beforeActivityName]) {
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getActivityValue(beforeActivityName)(context, activity)
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}
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def activityValue = getActivityValue(activity)
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// Determine the next activity to execute
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def nextActivity
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switch (activityValue) {
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case String: nextActivity = activityValue; break
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case Closure: nextActivity = activityValue(context); break
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case Class: nextActivity = activityValue.newInstance()(context)
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}
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if (workflowMap[afterActivityName]) {
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getActivityValue(afterActivityName)(context, activity, nextActivity)
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}
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if (!pause && nextActivity)
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call(nextActivity)
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else
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nextActivity
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}
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def call(activity) {
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execute(activity, false)
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}
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def nextActivity(activity) {
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execute(activity, true)
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}
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static void main(String[] args) {
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if (args.size() != 2) {
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println 'Usage: com.odelia.groovy.simpleworkflow.SimpleWorkflowEngine <dsl_filename> <activity_name>'
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return
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}
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SimpleWorkflowEngine.newInstance(new File(args[0]))(args[1])
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}
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}
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private class WorkflowParser {
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def map = [:]
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def methodMissing(String name, args) {
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map[name] = args[0]
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}
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def parse(Closure wf) {
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wf.delegate = this
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wf.resolveStrategy = Closure.DELEGATE_FIRST
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wf()
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map
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}
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def workflow = { it ->
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it.delegate = this
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it.resolveStrategy = Closure.DELEGATE_FIRST
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it()
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}
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def parse(File workflowDef) {
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def binding = new Binding([workflow: workflow])
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def shell = new GroovyShell(binding)
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shell.evaluate(workflowDef)
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map
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}
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} |