Building documents

These operations construct a document one node at a time. For most operations, parse a document in your selected format. Use these operations only when you cannot parse the document from text.

Create a builder.
Add the nodes in preorder.
Seal the builder to create an owned document.

Operations

Operation	Returns	Summary
builder	builder	Create an owned document builder.
add	node	builder.add(node) appends one node and returns its preorder ID.
add-many	none	builder.add_many(nodes) appends nodes in order in one native call.
seal	document	builder.seal() transfers the constructed document into an independent owned document.
close	none	Release the builder handle.

builder

clojure

2 B

[]

clojure

9 B

[options]

Parameters

Parameter	Type	Ownership	Default	Meaning
`options`	`map`	Value	{}	Binding options map. The :library key selects the loaded native library. Omission uses the binding's default library.

Errors

Status	When
`:out-of-memory`	native memory is exhausted

Notes

Add nodes in depth-first preorder. An append failure makes the builder unusable.

Examples

builder

clojure

176 B

(with-open [builder (sd/builder)]
  (let [object (sd/add builder {:kind :object})]
    (sd/add builder {:parent object :kind :number :key "x" :number 41}))
  (sd/seal builder))

Result / 13 B

{
  "x": 41
}

C exports: stardust_document_builder_create

add

clojure

14 B

[builder node]

Requires exclusive use of the receiver handle.

Parameters

Parameter	Type	Ownership	Default	Meaning
`builder`	`Builder`	Borrowed for the call	Required	The builder owner for this operation. Keep it alive during the call.
`node`	`node-input`	Value	Required	The next node's kind, parent and typed value.

Errors

Status	When
`:invalid-argument`	the node breaks the preorder rules or has an invalid kind or number
`:closed`	the builder is closed
`:out-of-memory`	native memory is exhausted

Notes

The root has no parent. Each later parent must be an open container or one of its ancestors.

Examples

builder/add

clojure

176 B

(with-open [builder (sd/builder)]
  (let [object (sd/add builder {:kind :object})]
    (sd/add builder {:parent object :kind :number :key "x" :number 41}))
  (sd/seal builder))

Result / 13 B

{
  "x": 41
}

Add a typed integer node

clojure

156 B

(let [input {:parent nil :kind :number :number 41 :boolean false :key "" :text ""}]
  (with-open [builder (sd/builder)]
    (sd/add builder input))
  input)

Result / 103 B

{
  "parent": null,
  "kind": "number",
  "boolean": false,
  "number": 41,
  "key": "",
  "text": ""
}

C exports: stardust_document_builder_add_many, stardust_document_builder_error

add-many

clojure

15 B

[builder nodes]

Requires exclusive use of the receiver handle.

Parameters

Parameter	Type	Ownership	Default	Meaning
`builder`	`Builder`	Borrowed for the call	Required	The builder owner for this operation. Keep it alive during the call.
`nodes`	`Node_Inputs`	Value	Required	Nodes in depth-first preorder to append together.

Errors

Status	When
`:invalid-argument`	a node breaks the preorder rules or has an invalid kind or number
`:closed`	the builder is closed
`:out-of-memory`	native memory is exhausted

Examples

builder/add_many

clojure

142 B

(with-open [builder (sd/builder)]
  (sd/add-many builder [{:kind :object} {:parent 0 :kind :number :key "x" :number 41}])
  (sd/seal builder))

Result / 13 B

{
  "x": 41
}

C exports: stardust_document_builder_add_many, stardust_document_builder_error

seal

clojure

9 B

[builder]

Requires exclusive use of the receiver handle.

Parameters

Parameter	Type	Ownership	Default	Meaning
`builder`	`Builder`	Borrowed for the call	Required	The builder owner for this operation. Keep it alive during the call.

Errors

Status	When
`:invalid-argument`	the builder has no root or a container is still open
`:closed`	the builder is closed
`:out-of-memory`	native memory is exhausted

Notes

The builder accepts no more nodes after sealing.

Examples

builder/seal

clojure

176 B

(with-open [builder (sd/builder)]
  (let [object (sd/add builder {:kind :object})]
    (sd/add builder {:parent object :kind :number :key "x" :number 41}))
  (sd/seal builder))

Result / 13 B

{
  "x": 41
}

C exports: stardust_document_builder_seal, stardust_document_builder_error

close

clojure

8 B

[handle]

Consumes the receiver handle.

Parameters

Parameter	Type	Ownership	Default	Meaning
`handle`	`Builder`	Consumed owner	Required	The builder owner to release. Do not use it after this call.

Examples

builder/close

input-text holds this document:

json

14 B

{
  "x": 41
}

clojure

79 B

(let [builder (sd/builder)]
  (sd/close builder)
  (sd/parse input-text :json))

Result / 13 B

{
  "x": 41
}

C exports: stardust_document_builder_release