2665a1a4c4
This change introduces a check during parse-tree analysis that dependencies are valid, along with some tests. Note that this could technically happen later during semantic analysis and I will likely move it so that we can get better diagnostics (more errors before failing). I've also cleaned up and unified some of the logic by introducing the general notion of a Visitor interface, which the parse tree analyzer, binder, and analyzers to come will all implement.
56 lines
1.3 KiB
Go
56 lines
1.3 KiB
Go
// Copyright 2016 Marapongo, Inc. All rights reserved.
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package compiler
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import (
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"github.com/golang/glog"
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"github.com/marapongo/mu/pkg/ast"
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"github.com/marapongo/mu/pkg/diag"
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)
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// Binder annotates an existing parse tree with semantic information.
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type Binder interface {
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Visitor
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// Bind takes the parse tree, binds all names inside of it, mutating it in place.
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Bind(doc *diag.Document, stack *ast.Stack)
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}
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func NewBinder(c Compiler) Binder {
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return &binder{c}
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}
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type binder struct {
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c Compiler
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}
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func (b *binder) Diag() diag.Sink {
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return b.c.Diag()
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}
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func (b *binder) Bind(doc *diag.Document, stack *ast.Stack) {
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glog.Infof("Binding Mu Stack: %v", stack.Name)
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if glog.V(2) {
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defer func() {
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glog.V(2).Infof("Binding Mu Stack %v completed w/ %v warnings and %v errors",
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stack.Name, b.Diag().Warnings(), b.Diag().Errors())
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}()
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}
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b.VisitStack(doc, stack)
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}
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func (b *binder) VisitMetadata(doc *diag.Document, kind string, meta *ast.Metadata) {
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}
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func (b *binder) VisitStack(doc *diag.Document, stack *ast.Stack) {
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}
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func (b *binder) VisitParameter(doc *diag.Document, name string, param *ast.Parameter) {
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}
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func (b *binder) VisitService(doc *diag.Document, name string, public bool, svc *ast.Service) {
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}
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func (b *binder) VisitDependency(doc *diag.Document, name string, dep *ast.Dependency) {
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}
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