goctl added

tools/goctl/api/parser/parser.go

@@ -0,0 +1,57 @@
+package parser
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"io"
+	"io/ioutil"
+
+	"zero/tools/goctl/api/spec"
+)
+
+type Parser struct {
+	r  *bufio.Reader
+	st string
+}
+
+func NewParser(filename string) (*Parser, error) {
+	api, err := ioutil.ReadFile(filename)
+	if err != nil {
+		return nil, err
+	}
+	info, body, service, err := MatchStruct(string(api))
+	if err != nil {
+		return nil, err
+	}
+	var buffer = new(bytes.Buffer)
+	buffer.WriteString(info)
+	buffer.WriteString(service)
+	return &Parser{
+		r:  bufio.NewReader(buffer),
+		st: body,
+	}, nil
+}
+
+func (p *Parser) Parse() (api *spec.ApiSpec, err error) {
+	api = new(spec.ApiSpec)
+	types, err := parseStructAst(p.st)
+	if err != nil {
+		return nil, err
+	}
+	api.Types = types
+	var lineNumber = 1
+	st := newRootState(p.r, &lineNumber)
+	for {
+		st, err = st.process(api)
+		if err == io.EOF {
+			return api, p.validate(api)
+		}
+		if err != nil {
+			return nil, fmt.Errorf("near line: %d, %s", lineNumber, err.Error())
+		}
+		if st == nil {
+			return api, p.validate(api)
+		}
+	}
+}