github.com/muratcelep/terraform@v1.1.0-beta2-not-internal-4/not-internal/configs/hcl2shim/single_attr_body.go (about)

     1  package hcl2shim
     2  
     3  import (
     4  	"fmt"
     5  
     6  	hcl2 "github.com/hashicorp/hcl/v2"
     7  )
     8  
     9  // SingleAttrBody is a weird implementation of hcl2.Body that acts as if
    10  // it has a single attribute whose value is the given expression.
    11  //
    12  // This is used to shim Resource.RawCount and Output.RawConfig to behave
    13  // more like they do in the old HCL loader.
    14  type SingleAttrBody struct {
    15  	Name string
    16  	Expr hcl2.Expression
    17  }
    18  
    19  var _ hcl2.Body = SingleAttrBody{}
    20  
    21  func (b SingleAttrBody) Content(schema *hcl2.BodySchema) (*hcl2.BodyContent, hcl2.Diagnostics) {
    22  	content, all, diags := b.content(schema)
    23  	if !all {
    24  		// This should never happen because this body implementation should only
    25  		// be used by code that is aware that it's using a single-attr body.
    26  		diags = append(diags, &hcl2.Diagnostic{
    27  			Severity: hcl2.DiagError,
    28  			Summary:  "Invalid attribute",
    29  			Detail:   fmt.Sprintf("The correct attribute name is %q.", b.Name),
    30  			Subject:  b.Expr.Range().Ptr(),
    31  		})
    32  	}
    33  	return content, diags
    34  }
    35  
    36  func (b SingleAttrBody) PartialContent(schema *hcl2.BodySchema) (*hcl2.BodyContent, hcl2.Body, hcl2.Diagnostics) {
    37  	content, all, diags := b.content(schema)
    38  	var remain hcl2.Body
    39  	if all {
    40  		// If the request matched the one attribute we represent, then the
    41  		// remaining body is empty.
    42  		remain = hcl2.EmptyBody()
    43  	} else {
    44  		remain = b
    45  	}
    46  	return content, remain, diags
    47  }
    48  
    49  func (b SingleAttrBody) content(schema *hcl2.BodySchema) (*hcl2.BodyContent, bool, hcl2.Diagnostics) {
    50  	ret := &hcl2.BodyContent{}
    51  	all := false
    52  	var diags hcl2.Diagnostics
    53  
    54  	for _, attrS := range schema.Attributes {
    55  		if attrS.Name == b.Name {
    56  			attrs, _ := b.JustAttributes()
    57  			ret.Attributes = attrs
    58  			all = true
    59  		} else if attrS.Required {
    60  			diags = append(diags, &hcl2.Diagnostic{
    61  				Severity: hcl2.DiagError,
    62  				Summary:  "Missing attribute",
    63  				Detail:   fmt.Sprintf("The attribute %q is required.", attrS.Name),
    64  				Subject:  b.Expr.Range().Ptr(),
    65  			})
    66  		}
    67  	}
    68  
    69  	return ret, all, diags
    70  }
    71  
    72  func (b SingleAttrBody) JustAttributes() (hcl2.Attributes, hcl2.Diagnostics) {
    73  	return hcl2.Attributes{
    74  		b.Name: {
    75  			Expr:      b.Expr,
    76  			Name:      b.Name,
    77  			NameRange: b.Expr.Range(),
    78  			Range:     b.Expr.Range(),
    79  		},
    80  	}, nil
    81  }
    82  
    83  func (b SingleAttrBody) MissingItemRange() hcl2.Range {
    84  	return b.Expr.Range()
    85  }