opentofu/internal/tfdiags/hcl.go
2023-05-02 15:33:06 +00:00

137 lines
3.2 KiB
Go

// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0
package tfdiags
import (
"github.com/hashicorp/hcl/v2"
)
// hclDiagnostic is a Diagnostic implementation that wraps a HCL Diagnostic
type hclDiagnostic struct {
diag *hcl.Diagnostic
}
var _ Diagnostic = hclDiagnostic{}
func (d hclDiagnostic) Severity() Severity {
switch d.diag.Severity {
case hcl.DiagWarning:
return Warning
default:
return Error
}
}
func (d hclDiagnostic) Description() Description {
return Description{
Summary: d.diag.Summary,
Detail: d.diag.Detail,
}
}
func (d hclDiagnostic) Source() Source {
var ret Source
if d.diag.Subject != nil {
rng := SourceRangeFromHCL(*d.diag.Subject)
ret.Subject = &rng
}
if d.diag.Context != nil {
rng := SourceRangeFromHCL(*d.diag.Context)
ret.Context = &rng
}
return ret
}
func (d hclDiagnostic) FromExpr() *FromExpr {
if d.diag.Expression == nil || d.diag.EvalContext == nil {
return nil
}
return &FromExpr{
Expression: d.diag.Expression,
EvalContext: d.diag.EvalContext,
}
}
func (d hclDiagnostic) ExtraInfo() interface{} {
return d.diag.Extra
}
// SourceRangeFromHCL constructs a SourceRange from the corresponding range
// type within the HCL package.
func SourceRangeFromHCL(hclRange hcl.Range) SourceRange {
return SourceRange{
Filename: hclRange.Filename,
Start: SourcePos{
Line: hclRange.Start.Line,
Column: hclRange.Start.Column,
Byte: hclRange.Start.Byte,
},
End: SourcePos{
Line: hclRange.End.Line,
Column: hclRange.End.Column,
Byte: hclRange.End.Byte,
},
}
}
// ToHCL constructs a HCL Range from the receiving SourceRange. This is the
// opposite of SourceRangeFromHCL.
func (r SourceRange) ToHCL() hcl.Range {
return hcl.Range{
Filename: r.Filename,
Start: hcl.Pos{
Line: r.Start.Line,
Column: r.Start.Column,
Byte: r.Start.Byte,
},
End: hcl.Pos{
Line: r.End.Line,
Column: r.End.Column,
Byte: r.End.Byte,
},
}
}
// ToHCL constructs a hcl.Diagnostics containing the same diagnostic messages
// as the receiving tfdiags.Diagnostics.
//
// This conversion preserves the data that HCL diagnostics are able to
// preserve but would be lossy in a round trip from tfdiags to HCL and then
// back to tfdiags, because it will lose the specific type information of
// the source diagnostics. In most cases this will not be a significant
// problem, but could produce an awkward result in some special cases such
// as converting the result of ConsolidateWarnings, which will force the
// resulting warning groups to be flattened early.
func (diags Diagnostics) ToHCL() hcl.Diagnostics {
if len(diags) == 0 {
return nil
}
ret := make(hcl.Diagnostics, len(diags))
for i, diag := range diags {
severity := diag.Severity()
desc := diag.Description()
source := diag.Source()
fromExpr := diag.FromExpr()
hclDiag := &hcl.Diagnostic{
Summary: desc.Summary,
Detail: desc.Detail,
Severity: severity.ToHCL(),
}
if source.Subject != nil {
hclDiag.Subject = source.Subject.ToHCL().Ptr()
}
if source.Context != nil {
hclDiag.Context = source.Context.ToHCL().Ptr()
}
if fromExpr != nil {
hclDiag.Expression = fromExpr.Expression
hclDiag.EvalContext = fromExpr.EvalContext
}
ret[i] = hclDiag
}
return ret
}