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//
// Copyright 2024 CloudWeGo 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 expr
var op1ch = [...]bool{
'+': true,
'-': true,
'*': true,
'/': true,
'%': true,
'&': true,
'|': true,
'^': true,
'~': true,
'(': true,
')': true,
}
var op2ch = [...]bool{
'*': true,
'<': true,
'>': true,
}
func neg2(v *Expr, err error) (*Expr, error) {
if err != nil {
return nil, err
} else {
return v.Neg(), nil
}
}
func not2(v *Expr, err error) (*Expr, error) {
if err != nil {
return nil, err
} else {
return v.Not(), nil
}
}
func isop1ch(ch rune) bool {
return ch >= 0 && int(ch) < len(op1ch) && op1ch[ch]
}
func isop2ch(ch rune) bool {
return ch >= 0 && int(ch) < len(op2ch) && op2ch[ch]
}
func isdigit(ch rune) bool {
return ch >= '0' && ch <= '9'
}
func isident(ch rune) bool {
return isdigit(ch) || isident0(ch)
}
func isident0(ch rune) bool {
return (ch == '_') || (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z')
}
func ishexdigit(ch rune) bool {
return isdigit(ch) || (ch >= 'a' && ch <= 'f') || (ch >= 'A' && ch <= 'F')
}
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