db99092334
This change implements `mapper.Encode` "for real" (that is, in a way
that isn't a complete embarrassment). It uses the obvious reflection
trickery to encode a tagged struct and its values as a JSON-like
in-memory map and collection of keyed values.
During this, I took the opportunity to also clean up a few other things
that had been bugging me. Namely, the presence of `mapper.Object` was
always error prone, since it isn't a true "typedef" in the sence that
it carries extra RTTI. Instead of doing that, let's just use the real
`map[string]interface{}` "JSON-map-like" object type. Even better, we
no longer require resource providers to deal with the mapper
infrastructure. Instead, the `Check` function can simply return an
array of errors. It's still best practice to return field-specific errors
to facilitate better diagnostics, but it's no longer required; and I've
added `resource.NewFieldError` to eliminate the need to import mapper.
As of this change, we can also consistently emit RPC structs with `lumi`
tags, rather than `lumi` tags on the way in and `json` on the way out.
This completes pulumi/lumi#183.
61 lines
2 KiB
Go
61 lines
2 KiB
Go
// Licensed to Pulumi Corporation ("Pulumi") under one or more
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// contributor license agreements. See the NOTICE file distributed with
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// this work for additional information regarding copyright ownership.
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// Pulumi licenses this file to You under the Apache License, Version 2.0
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// (the "License"); you may not use this file except in compliance with
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// the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package encoding
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import (
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"reflect"
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"github.com/pulumi/lumi/pkg/compiler/ast"
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"github.com/pulumi/lumi/pkg/util/contract"
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"github.com/pulumi/lumi/pkg/util/mapper"
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)
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func decodeObjectLiteralProperty(m mapper.Mapper, obj map[string]interface{}) (ast.ObjectLiteralProperty, error) {
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k, err := mapper.FieldString(obj, reflect.TypeOf((*ast.ObjectLiteralProperty)(nil)).Elem(), "kind", true)
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if err != nil {
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return nil, err
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}
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if k != nil {
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kind := ast.NodeKind(*k)
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switch kind {
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case ast.ObjectLiteralNamedPropertyKind:
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return decodeObjectLiteralNamedProperty(m, obj)
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case ast.ObjectLiteralComputedPropertyKind:
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return decodeObjectLiteralComputedProperty(m, obj)
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default:
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contract.Failf("Unrecognized ObjectLiteralProperty kind: %v\n%v\n", kind, obj)
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}
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}
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return nil, nil
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}
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func decodeObjectLiteralNamedProperty(m mapper.Mapper,
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obj map[string]interface{}) (*ast.ObjectLiteralNamedProperty, error) {
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var p ast.ObjectLiteralNamedProperty
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if err := m.Decode(obj, &p); err != nil {
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return nil, err
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}
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return &p, nil
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}
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func decodeObjectLiteralComputedProperty(m mapper.Mapper,
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obj map[string]interface{}) (*ast.ObjectLiteralComputedProperty, error) {
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var p ast.ObjectLiteralComputedProperty
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if err := m.Decode(obj, &p); err != nil {
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return nil, err
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}
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return &p, nil
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}
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