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// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0
package main
import (
"encoding/json"
"fmt"
"github.com/hashicorp/hcl/v2"
)
func decodeJSONDiagnostics(src []byte) hcl.Diagnostics {
type PosJSON struct {
Line int `json:"line"`
Column int `json:"column"`
Byte int `json:"byte"`
}
type RangeJSON struct {
Filename string `json:"filename"`
Start PosJSON `json:"start"`
End PosJSON `json:"end"`
}
type DiagnosticJSON struct {
Severity string `json:"severity"`
Summary string `json:"summary"`
Detail string `json:"detail,omitempty"`
Subject *RangeJSON `json:"subject,omitempty"`
}
type DiagnosticsJSON struct {
Diagnostics []DiagnosticJSON `json:"diagnostics"`
}
var raw DiagnosticsJSON
var diags hcl.Diagnostics
err := json.Unmarshal(src, &raw)
if err != nil {
diags = append(diags, &hcl.Diagnostic{
Severity: hcl.DiagError,
Summary: "Failed to parse hcldec diagnostics result",
Detail: fmt.Sprintf("Sub-program hcldec produced invalid diagnostics: %s.", err),
})
return diags
}
if len(raw.Diagnostics) == 0 {
return nil
}
diags = make(hcl.Diagnostics, 0, len(raw.Diagnostics))
for _, rawDiag := range raw.Diagnostics {
var severity hcl.DiagnosticSeverity
switch rawDiag.Severity {
case "error":
severity = hcl.DiagError
case "warning":
severity = hcl.DiagWarning
default:
diags = append(diags, &hcl.Diagnostic{
Severity: hcl.DiagError,
Summary: "Failed to parse hcldec diagnostics result",
Detail: fmt.Sprintf("Diagnostic has unsupported severity %q.", rawDiag.Severity),
})
continue
}
diag := &hcl.Diagnostic{
Severity: severity,
Summary: rawDiag.Summary,
Detail: rawDiag.Detail,
}
if rawDiag.Subject != nil {
rawRange := rawDiag.Subject
diag.Subject = &hcl.Range{
Filename: rawRange.Filename,
Start: hcl.Pos{
Line: rawRange.Start.Line,
Column: rawRange.Start.Column,
Byte: rawRange.Start.Byte,
},
End: hcl.Pos{
Line: rawRange.End.Line,
Column: rawRange.End.Column,
Byte: rawRange.End.Byte,
},
}
}
diags = append(diags, diag)
}
return diags
}
func severityString(severity hcl.DiagnosticSeverity) string {
switch severity {
case hcl.DiagError:
return "error"
case hcl.DiagWarning:
return "warning"
default:
return "unsupported-severity"
}
}
func rangeString(rng hcl.Range) string {
return fmt.Sprintf(
"from line %d column %d byte %d to line %d column %d byte %d",
rng.Start.Line, rng.Start.Column, rng.Start.Byte,
rng.End.Line, rng.End.Column, rng.End.Byte,
)
}
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