mirror of
https://github.com/google/go-jsonnet.git
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73 lines
2.0 KiB
Go
73 lines
2.0 KiB
Go
/*
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Copyright 2016 Google Inc. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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// Package errors provides internal representation of errors.
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package errors
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import (
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"fmt"
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"github.com/google/go-jsonnet/ast"
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)
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//////////////////////////////////////////////////////////////////////////////
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// StaticError
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// StaticError represents an error during parsing/lexing or static analysis.
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// TODO(sbarzowski) Make it possible to have multiple static errors and warnings
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type StaticError interface {
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// WithContext returns a new StaticError with additional context before the error message.
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WithContext(string) StaticError
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// Error returns the string representation of a StaticError.
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Error() string
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// Loc returns the place in the source code that triggerred the error.
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Loc() ast.LocationRange
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}
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type staticError struct {
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loc ast.LocationRange
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msg string
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}
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func (err staticError) WithContext(context string) StaticError {
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return staticError{
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loc: err.loc,
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msg: fmt.Sprintf("%v while %s", err.msg, context),
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}
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}
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func (err staticError) Error() string {
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loc := ""
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if err.loc.IsSet() {
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loc = err.loc.String()
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}
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return fmt.Sprintf("%v %v", loc, err.msg)
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}
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func (err staticError) Loc() ast.LocationRange {
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return err.loc
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}
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// MakeStaticErrorMsg returns a staticError with a message.
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func MakeStaticErrorMsg(msg string) StaticError {
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return staticError{msg: msg}
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}
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// MakeStaticError returns a StaticError with a message and a LocationRange.
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func MakeStaticError(msg string, lr ast.LocationRange) StaticError {
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return staticError{msg: msg, loc: lr}
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}
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