113 lines
2.2 KiB
Go
113 lines
2.2 KiB
Go
package main
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import (
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"errors"
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"flag"
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"fmt"
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"go/format"
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"io/ioutil"
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"os"
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"github.com/z7zmey/php-parser/parser"
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"github.com/z7zmey/php-parser/visitor"
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"php2go/parseutil"
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)
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const (
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phpVersionMajor = 7
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phpVersionMinor = 4
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phpVersionPatch = 0
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phpVersionExtra = `-php2go`
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)
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func ConvertFile(filename string) (string, error) {
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inputFile, err := ioutil.ReadFile(filename)
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if err != nil {
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return "", err
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}
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namespaces := visitor.NewNamespaceResolver()
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// scope := NewScope()
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state := conversionState{
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importPackages: make(map[string]struct{}),
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}
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p, err := parser.NewParser([]byte(inputFile), fmt.Sprintf("%d.%d", phpVersionMajor, phpVersionMinor))
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if err != nil {
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panic(err)
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}
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// Enable comments extraction
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p.WithFreeFloating()
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// Parse PHP content
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p.Parse()
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for _, err := range p.GetErrors() {
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return "", errors.New(err.String())
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}
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n := p.GetRootNode()
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// Debug pass: Walk and print JSON...
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if fh, err := os.OpenFile(filename+`.parse.json`, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0644); err == nil {
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v := visitor.NewPrettyJsonDumper(fh, namespaces)
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n.Walk(v)
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fh.Close()
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}
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// Pass 1: Normalise Alt** Stmt types
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normaliser := parseutil.MutatingWalker{
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EnterNode: normaliseAltCb,
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LeaveNode: parseutil.MutatingWalkerNoop,
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}
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err = normaliser.Walk(&n)
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if err != nil {
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return "", err
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}
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// Pass 1.5: Hoist some expressions out of rvalue contexts
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err = runHoistPass(&n)
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if err != nil {
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return "", err
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}
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// Debug pass: Walk and print JSON...
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if fh, err := os.OpenFile(filename+`.parse2.json`, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0644); err == nil {
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v := visitor.NewPrettyJsonDumper(fh, namespaces)
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n.Walk(v)
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fh.Close()
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}
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// Pass 2: Walk and print (converted)
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ret, err := state.convert(n)
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if err != nil {
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return "", err
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}
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// Pass 3: Gofmt output
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// TODO pass flags to get -s/-r equivalent for more agressive simplification
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formatted, err := format.Source([]byte(ret))
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if err != nil {
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ret += "// Gofmt failed: " + err.Error()
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return ret, nil
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}
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// Done
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return string(formatted), nil
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}
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func main() {
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filename := flag.String("InFile", "", "Select file to convert")
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flag.Parse()
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ret, err := ConvertFile(*filename)
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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fmt.Println(ret)
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}
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