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package hclwrite
import (
"github.com/hashicorp/hcl2/hcl/hclsyntax"
"github.com/zclconf/go-cty/cty"
)
type Block struct {
inTree
leadComments *node
typeName *node
labels nodeSet
open *node
body *node
close *node
}
func newBlock() *Block {
return &Block{
inTree: newInTree(),
labels: newNodeSet(),
}
}
// NewBlock constructs a new, empty block with the given type name and labels.
func NewBlock(typeName string, labels []string) *Block {
block := newBlock()
block.init(typeName, labels)
return block
}
func (b *Block) init(typeName string, labels []string) {
nameTok := newIdentToken(typeName)
nameObj := newIdentifier(nameTok)
b.leadComments = b.children.Append(newComments(nil))
b.typeName = b.children.Append(nameObj)
for _, label := range labels {
labelToks := TokensForValue(cty.StringVal(label))
labelObj := newQuoted(labelToks)
labelNode := b.children.Append(labelObj)
b.labels.Add(labelNode)
}
b.open = b.children.AppendUnstructuredTokens(Tokens{
{
Type: hclsyntax.TokenOBrace,
Bytes: []byte{'{'},
},
{
Type: hclsyntax.TokenNewline,
Bytes: []byte{'\n'},
},
})
body := newBody() // initially totally empty; caller can append to it subsequently
b.body = b.children.Append(body)
b.close = b.children.AppendUnstructuredTokens(Tokens{
{
Type: hclsyntax.TokenCBrace,
Bytes: []byte{'}'},
},
{
Type: hclsyntax.TokenNewline,
Bytes: []byte{'\n'},
},
})
}
// Body returns the body that represents the content of the receiving block.
//
// Appending to or otherwise modifying this body will make changes to the
// tokens that are generated between the blocks open and close braces.
func (b *Block) Body() *Body {
return b.body.content.(*Body)
}
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