Merge pull request #36 from mackee/feature/support-tinygo

add feature: sqlla supports tinygo. for the edge worker services

expr.go

@@ -5,8 +5,6 @@ import (
 	"database/sql"
 	"strconv"
 	"time"
-
-	"github.com/go-sql-driver/mysql"
 )
 
 type Expr interface {
@@ -347,52 +345,6 @@ func (e ExprMultiNullTime) ToSql() (string, []interface{}, error) {
 	return e.Column + " " + ops, vs, nil
 }
 
-type ExprMysqlNullTime struct {
-	Column string
-	Value  mysql.NullTime
-	Op     Operator
-}
-
-func (e ExprMysqlNullTime) ToSql() (string, []interface{}, error) {
-	var ops, placeholder string
-	var err error
-	vs := []interface{}{}
-	if !e.Value.Valid {
-		if e.Op == OpNot {
-			ops, err = opIsNotNull.ToSql()
-		} else {
-			ops, err = opIsNull.ToSql()
-		}
-	} else {
-		ops, err = e.Op.ToSql()
-		placeholder = " ?"
-		vs = append(vs, e.Value)
-	}
-	if err != nil {
-		return "", nil, err
-	}
-
-	return e.Column + " " + ops + placeholder, vs, nil
-}
-
-type ExprMultiMysqlNullTime struct {
-	Column string
-	Values []mysql.NullTime
-	Op     Operator
-}
-
-func (e ExprMultiMysqlNullTime) ToSql() (string, []interface{}, error) {
-	ops, err := e.Op.ToSql()
-	if err != nil {
-		return "", nil, err
-	}
-	vs := make([]interface{}, 0, len(e.Values))
-	for _, v := range e.Values {
-		vs = append(vs, interface{}(v))
-	}
-	return e.Column + " " + ops, vs, nil
-}
-
 type ExprNullFloat64 struct {
 	Column string
 	Value  sql.NullFloat64

exprmysql.go

@@ -0,0 +1,53 @@
+//go:build !tinygo.wasm
+
+package sqlla
+
+import (
+	"github.com/go-sql-driver/mysql"
+)
+
+type ExprMysqlNullTime struct {
+	Column string
+	Value  mysql.NullTime
+	Op     Operator
+}
+
+func (e ExprMysqlNullTime) ToSql() (string, []interface{}, error) {
+	var ops, placeholder string
+	var err error
+	vs := []interface{}{}
+	if !e.Value.Valid {
+		if e.Op == OpNot {
+			ops, err = opIsNotNull.ToSql()
+		} else {
+			ops, err = opIsNull.ToSql()
+		}
+	} else {
+		ops, err = e.Op.ToSql()
+		placeholder = " ?"
+		vs = append(vs, e.Value)
+	}
+	if err != nil {
+		return "", nil, err
+	}
+
+	return e.Column + " " + ops + placeholder, vs, nil
+}
+
+type ExprMultiMysqlNullTime struct {
+	Column string
+	Values []mysql.NullTime
+	Op     Operator
+}
+
+func (e ExprMultiMysqlNullTime) ToSql() (string, []interface{}, error) {
+	ops, err := e.Op.ToSql()
+	if err != nil {
+		return "", nil, err
+	}
+	vs := make([]interface{}, 0, len(e.Values))
+	for _, v := range e.Values {
+		vs = append(vs, interface{}(v))
+	}
+	return e.Column + " " + ops, vs, nil
+}

generator.go

@@ -1,13 +1,74 @@
-// +build !go1.16
+//go:build !tinygo.wasm
 
 package sqlla
 
 import (
-	"fmt"
+	"bytes"
+	"embed"
+	"go/format"
 	"io"
-	"runtime"
+	"log"
+	"strings"
+	"text/template"
+	"unicode"
+
+	"github.com/pkg/errors"
+	"github.com/serenize/snaker"
 )
 
+//go:embed template/*
+var templates embed.FS
+
+//go:embed template/table.tmpl
+var tableTmpl []byte
+
+var tmpl = template.New("table")
+
+func init() {
+	tmpl = tmpl.Funcs(
+		template.FuncMap{
+			"Title": strings.Title,
+			"Exprize": func(s string) string {
+				s = strings.TrimPrefix(s, "sql.")
+				s = strings.TrimPrefix(s, "time.")
+				s = strings.TrimPrefix(s, "mysql.")
+
+				return s
+			},
+			"Untitle": func(s string) string {
+				s0 := rune(s[0])
+				if !unicode.IsUpper(s0) {
+					return s
+				}
+				s0l := unicode.ToLower(rune(s[0]))
+				return string(s0l) + s[1:]
+			},
+			"toLower": strings.ToLower,
+			"toSnake": snaker.CamelToSnake,
+			"toCamel": snaker.SnakeToCamel,
+		},
+	)
+	var err error
+	tmpl, err = tmpl.ParseFS(templates, "template/*.tmpl")
+	if err != nil {
+		log.Fatal(err)
+	}
+	tmpl, err = tmpl.Parse(string(tableTmpl))
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
 func WriteCode(w io.Writer, table *Table) error {
-	return fmt.Errorf("must build by go version of 1.16 or higher. this built by %s", runtime.Version())
+	buf := new(bytes.Buffer)
+	err := tmpl.Execute(buf, table)
+	if err != nil {
+		return errors.Wrapf(err, "fail to render")
+	}
+	bs, err := format.Source(buf.Bytes())
+	if err != nil {
+		return errors.Wrapf(err, "fail to format: table=%s", table.Name)
+	}
+	_, err = w.Write(bs)
+	return err
 }

main.go

@@ -1,3 +1,5 @@
+//go:build !tinygo.wasm
+
 package sqlla
 
 import (

table.go

@@ -1,3 +1,5 @@
+//go:build !tinygo.wasm
+
 package sqlla
 
 import (