pulumi/pkg/diag/pos.go
2017-05-18 14:51:52 -07:00

44 lines
1.6 KiB
Go

// Licensed to Pulumi Corporation ("Pulumi") under one or more
// contributor license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright ownership.
// Pulumi licenses this file to You 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 diag
// Pos represents a position in a file.
type Pos struct {
Line int // a 1-based line number
Column int // a 1-based column number
}
// EmptyPos may be used when no position is needed.
var EmptyPos = Pos{0, 0}
// IsEmpty returns true if the Pos information is missing.
func (pos Pos) IsEmpty() bool {
return pos.Line == 0 && pos.Column == 0
}
// Location represents a region spanning two positions in a file.
type Location struct {
Start Pos // a starting position.
End *Pos // an ending position; if nil, represents a point.
}
// EmptyLocation may be used when no position information is available.
var EmptyLocation = Location{EmptyPos, nil}
// IsEmpty returns true if the Location information is missing.
func (loc Location) IsEmpty() bool {
return loc.Start.IsEmpty() && (loc.End == nil || loc.End.IsEmpty())
}