f726c21402
During subtypeOf checking, we need to walk the chain of documents from which a stack came. This is because, due to template expansion, we'll end up with a different document for instantiated types than uninstantiated ones. This change keeps track of the parent and walks it appropriately.
43 lines
1 KiB
Go
43 lines
1 KiB
Go
// Copyright 2016 Marapongo, Inc. All rights reserved.
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package diag
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import (
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"io/ioutil"
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"path/filepath"
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)
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// Document is a file used during compilation, for which advanced diagnostics, such as line/column numbers, may be
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// required. It stores the contents of the entire file so that precise errors can be given; Forget discards them.
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type Document struct {
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File string
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Body []byte
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Parent *Document // if this document was generated from another, this will point to it.
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}
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var _ Diagable = &Document{} // compile-time assertion that *Document implements Diagable.
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func NewDocument(file string) *Document {
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return &Document{File: file}
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}
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func ReadDocument(file string) (*Document, error) {
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body, err := ioutil.ReadFile(file)
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if err != nil {
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return nil, err
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}
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return &Document{File: file, Body: body}, nil
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}
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func (doc *Document) Ext() string {
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return filepath.Ext(doc.File)
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}
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func (doc *Document) Forget() {
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doc.Body = nil
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}
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func (doc *Document) Where() (*Document, *Location) {
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return doc, nil
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}
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