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// Copyright 2020 CUE 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 cli
import (
"strings"
"cuelang.org/go/cue"
"cuelang.org/go/cue/ast"
"cuelang.org/go/cue/errors"
"cuelang.org/go/cue/parser"
"cuelang.org/go/cue/token"
)
func ParseValue(pos token.Pos, name, str string, k cue.Kind) (x ast.Expr, errs errors.Error) {
var expr ast.Expr
if k&cue.NumberKind != 0 {
var err error
expr, err = parser.ParseExpr(name, str)
if err != nil {
errs = errors.Wrapf(err, pos,
"invalid number for injection tag %q", name)
}
}
if k&cue.BoolKind != 0 {
str = strings.TrimSpace(str)
b, ok := boolValues[str]
if !ok {
errs = errors.Append(errs, errors.Newf(pos,
"invalid boolean value %q for injection tag %q", str, name))
} else if expr != nil || k&cue.StringKind != 0 {
// Convert into an expression
bl := ast.NewBool(b)
if expr != nil {
expr = &ast.BinaryExpr{Op: token.OR, X: expr, Y: bl}
} else {
expr = bl
}
} else {
x = ast.NewBool(b)
}
}
if k&cue.StringKind != 0 {
if expr != nil {
expr = &ast.BinaryExpr{Op: token.OR, X: expr, Y: ast.NewString(str)}
} else {
x = ast.NewString(str)
}
}
switch {
case expr != nil:
return expr, nil
case x != nil:
return x, nil
case errs == nil:
return nil, errors.Newf(pos,
"invalid type for injection tag %q", name)
}
return nil, errs
}
var boolValues = map[string]bool{
"1": true,
"0": false,
"t": true,
"f": false,
"T": true,
"F": false,
"true": true,
"false": false,
"TRUE": true,
"FALSE": false,
"True": true,
"False": false,
}
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