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// Copyright 2022 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package expectations
import (
"fmt"
"io"
"strings"
)
// Severity is an enumerator of diagnostic severity
type Severity string
const (
Error Severity = "error"
Warning Severity = "warning"
Note Severity = "note"
)
// Diagnostic holds a line, column, message and severity.
// Diagnostic also implements the 'error' interface.
type Diagnostic struct {
Severity Severity
Line int // 1-based
Column int // 1-based
Message string
}
func (e Diagnostic) String() string {
sb := &strings.Builder{}
if e.Line > 0 {
fmt.Fprintf(sb, "%v", e.Line)
if e.Column > 0 {
fmt.Fprintf(sb, ":%v", e.Column)
}
sb.WriteString(" ")
}
sb.WriteString(string(e.Severity))
sb.WriteString(": ")
sb.WriteString(e.Message)
return sb.String()
}
// Error implements the 'error' interface.
func (e Diagnostic) Error() string { return e.String() }
// Diagnostics is a list of diagnostic
type Diagnostics []Diagnostic
// NumErrors returns number of errors in the diagnostics
func (l Diagnostics) NumErrors() int {
count := 0
for _, d := range l {
if d.Severity == Error {
count++
}
}
return count
}
// Print prints the list of diagnostics to 'w'
func (l Diagnostics) Print(w io.Writer, path string) {
for _, d := range l {
fmt.Fprintf(w, "%v:%v %v\n", path, d.Line, d.Message)
}
}