507a2609a7
This is an initial implementation of the Coconut IDL Compiler (CIDLC). This is described further in https://github.com/pulumi/coconut/blob/master/docs/design/idl.md, and the work is tracked by coconut/pulumi#133. I've been kicking the tires with this locally enough to checkpoint the current version. There are quite a few loose ends not yet implemented, most of them minor, with the exception of the RPC stub generation which I need to flesh out more before committing.
46 lines
1.4 KiB
Go
46 lines
1.4 KiB
Go
// Copyright 2017 Pulumi, Inc. All rights reserved.
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package cidlc
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import (
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"reflect"
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"strings"
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"github.com/pulumi/coconut/pkg/diag"
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"github.com/pulumi/coconut/pkg/util/cmdutil"
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)
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// PropertyOptionsTag is the field tag the IDL compiler uses to find property options.
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const PropertyOptionsTag = "coco"
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// PropertyOptions represents a parsed field tag, controlling how properties are treated.
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type PropertyOptions struct {
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Name string // the property name to emit into the package.
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Optional bool // true if this is an optional property.
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Replaces bool // true if changing this property triggers a replacement of this resource.
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Out bool // true if the property is part of the resource's output, rather than input, properties.
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}
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// ParsePropertyOptions parses a tag into a structured set of options.
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func ParsePropertyOptions(tag string) PropertyOptions {
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opts := PropertyOptions{}
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if coco, has := reflect.StructTag(tag).Lookup(PropertyOptionsTag); has {
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// The first element is the name; all others are optional flags. All are delimited by commas.
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if keys := strings.Split(coco, ","); len(keys) > 0 {
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opts.Name = keys[0]
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for _, key := range keys[1:] {
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switch key {
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case "optional":
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opts.Optional = true
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case "replaces":
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opts.Replaces = true
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case "out":
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opts.Out = true
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default:
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cmdutil.Sink().Errorf(diag.Message("unrecognized tag `coco:\"%v\"`", key))
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}
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}
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}
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}
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return opts
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}
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