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diag.go
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diag.go
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// Copyright 2017 Istio 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 modelgen
import (
"bytes"
"fmt"
"strings"
)
type (
diagKind uint8
)
const (
errorDiag diagKind = iota
)
const (
unknownFile = ""
unknownLine = ""
)
type (
// Diag represents diagnostic information.
diag struct {
kind diagKind
location location
message string
}
// location represents the location of the Diag
location struct {
file string
// TODO: Currently Line is always set as UNKNOWN_LINE. Consider using proto's
// SourceCodeInfo to exactly point to the line number.
line string
}
)
func (diag diag) String() string {
var kind string
if diag.kind == errorDiag {
kind = "Error"
} else {
kind = "Warning"
}
msg := strings.TrimSpace(diag.message)
if !strings.HasSuffix(msg, ".") {
msg = msg + "."
}
if diag.location.line != "" {
return fmt.Sprintf("%s: %s:%s: %s\n", kind, diag.location.file, diag.location.line, msg)
} else if diag.location.file != "" {
return fmt.Sprintf("%s: %s: %s\n", kind, diag.location.file, msg)
} else {
return fmt.Sprintf("%s: %s\n", kind, msg)
}
}
func stringifyDiags(diags []diag) string {
var result bytes.Buffer
for _, d := range diags {
result.WriteString(d.String())
}
return result.String()
}
func (m *Model) addError(file string, line string, format string, a ...interface{}) {
m.diags = append(m.diags, createError(file, line, format, a))
}
func createError(file string, line string, format string, a []interface{}) diag {
if len(a) == 0 {
return diag{kind: errorDiag, location: location{file: file, line: line}, message: format}
}
return diag{kind: errorDiag, location: location{file: file, line: line}, message: fmt.Sprintf(format, a...)}
}