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package.go
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package.go
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package mingo
import (
"go/ast"
"go/token"
"go/types"
"github.com/bobg/errors"
)
type pkgScanner struct {
s *Scanner
pkgpath string
fset *token.FileSet
info *types.Info
}
func (p *pkgScanner) file(file *ast.File) error {
for _, decl := range file.Decls {
if err := p.decl(decl); err != nil {
return errors.Wrapf(err, "scanning decl at %s", p.fset.Position(decl.Pos()))
}
if p.isMax() {
break
}
}
return nil
}
func (p *pkgScanner) greater(result Result) bool {
return p.s.greater(result)
}
func (p *pkgScanner) isMax() bool {
return p.s.isMax()
}
func (p *pkgScanner) isTypeExpr(expr ast.Expr) bool {
tv, ok := p.info.Types[expr]
if !ok {
return false
}
return tv.IsType()
}
func (p *pkgScanner) isSigned(expr ast.Expr) bool {
tv, ok := p.info.Types[expr]
if !ok {
return false
}
basic, ok := tv.Type.(*types.Basic)
if !ok {
return false
}
return basic.Info()&types.IsInteger != 0 && basic.Info()&types.IsUnsigned == 0
}