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Merge pull request #1434 from jedevc/resource-interpolation
Resource interpolation support
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| package hclparser | ||
|
|
||
| import ( | ||
| "github.com/hashicorp/hcl/v2" | ||
| ) | ||
|
|
||
| type filterBody struct { | ||
| body hcl.Body | ||
| schema *hcl.BodySchema | ||
| exclude bool | ||
| } | ||
|
|
||
| func FilterIncludeBody(body hcl.Body, schema *hcl.BodySchema) hcl.Body { | ||
| return &filterBody{ | ||
| body: body, | ||
| schema: schema, | ||
| } | ||
| } | ||
|
|
||
| func FilterExcludeBody(body hcl.Body, schema *hcl.BodySchema) hcl.Body { | ||
| return &filterBody{ | ||
| body: body, | ||
| schema: schema, | ||
| exclude: true, | ||
| } | ||
| } | ||
|
|
||
| func (b *filterBody) Content(schema *hcl.BodySchema) (*hcl.BodyContent, hcl.Diagnostics) { | ||
| if b.exclude { | ||
| schema = subtractSchemas(schema, b.schema) | ||
| } else { | ||
| schema = intersectSchemas(schema, b.schema) | ||
| } | ||
| content, _, diag := b.body.PartialContent(schema) | ||
| return content, diag | ||
| } | ||
|
|
||
| func (b *filterBody) PartialContent(schema *hcl.BodySchema) (*hcl.BodyContent, hcl.Body, hcl.Diagnostics) { | ||
| if b.exclude { | ||
| schema = subtractSchemas(schema, b.schema) | ||
| } else { | ||
| schema = intersectSchemas(schema, b.schema) | ||
| } | ||
| return b.body.PartialContent(schema) | ||
| } | ||
|
|
||
| func (b *filterBody) JustAttributes() (hcl.Attributes, hcl.Diagnostics) { | ||
| return b.body.JustAttributes() | ||
| } | ||
|
|
||
| func (b *filterBody) MissingItemRange() hcl.Range { | ||
| return b.body.MissingItemRange() | ||
| } | ||
|
|
||
| func intersectSchemas(a, b *hcl.BodySchema) *hcl.BodySchema { | ||
| result := &hcl.BodySchema{} | ||
| for _, blockA := range a.Blocks { | ||
| for _, blockB := range b.Blocks { | ||
| if blockA.Type == blockB.Type { | ||
| result.Blocks = append(result.Blocks, blockA) | ||
| break | ||
| } | ||
| } | ||
| } | ||
| for _, attrA := range a.Attributes { | ||
| for _, attrB := range b.Attributes { | ||
| if attrA.Name == attrB.Name { | ||
| result.Attributes = append(result.Attributes, attrA) | ||
| break | ||
| } | ||
| } | ||
| } | ||
| return result | ||
| } | ||
|
|
||
| func subtractSchemas(a, b *hcl.BodySchema) *hcl.BodySchema { | ||
| result := &hcl.BodySchema{} | ||
| for _, blockA := range a.Blocks { | ||
| found := false | ||
| for _, blockB := range b.Blocks { | ||
| if blockA.Type == blockB.Type { | ||
| found = true | ||
| break | ||
| } | ||
| } | ||
| if !found { | ||
| result.Blocks = append(result.Blocks, blockA) | ||
| } | ||
| } | ||
| for _, attrA := range a.Attributes { | ||
| found := false | ||
| for _, attrB := range b.Attributes { | ||
| if attrA.Name == attrB.Name { | ||
| found = true | ||
| break | ||
| } | ||
| } | ||
| if !found { | ||
| result.Attributes = append(result.Attributes, attrA) | ||
| } | ||
| } | ||
| return result | ||
| } |
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