go-ethereum/cmd/abigen/namefilter.go

59 lines
1.2 KiB
Go

package main
import (
"fmt"
"strings"
)
type nameFilter struct {
fulls map[string]bool // path/to/contract.sol:Type
files map[string]bool // path/to/contract.sol:*
types map[string]bool // *:Type
}
func newNameFilter(patterns ...string) (*nameFilter, error) {
f := &nameFilter{
fulls: make(map[string]bool),
files: make(map[string]bool),
types: make(map[string]bool),
}
for _, pattern := range patterns {
if err := f.add(pattern); err != nil {
return nil, err
}
}
return f, nil
}
func (f *nameFilter) add(pattern string) error {
ft := strings.Split(pattern, ":")
if len(ft) != 2 {
// filenames and types must not include ':' symbol
return fmt.Errorf("invalid pattern: %s", pattern)
}
file, typ := ft[0], ft[1]
if file == "*" {
f.types[typ] = true
return nil
} else if typ == "*" {
f.files[file] = true
return nil
}
f.fulls[pattern] = true
return nil
}
func (f *nameFilter) Matches(name string) bool {
ft := strings.Split(name, ":")
if len(ft) != 2 {
// If contract names are always of the fully-qualified form
// <filePath>:<type>, then this case will never happen.
return false
}
file, typ := ft[0], ft[1]
// full paths > file paths > types
return f.fulls[name] || f.files[file] || f.types[typ]
}