/
templates.go
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/
templates.go
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// Copyright (c) 2020 Mercari, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
package generator
import (
"io"
"text/template"
"go.mercari.io/yo/internal"
)
// TemplateType represents a template type.
type TemplateType uint
// the order here will be the alter the output order per file.
const (
TypeTemplate TemplateType = iota
IndexTemplate
// always last
YOTemplate
)
// String returns the name for the associated template type.
func (tt TemplateType) String() string {
var s string
switch tt {
case YOTemplate:
s = "yo_db"
case TypeTemplate:
s = "type"
case IndexTemplate:
s = "index"
default:
panic("unknown TemplateType")
}
return s
}
var (
// KnownTypeMap is the collection of known Go types.
KnownTypeMap = map[string]bool{
"bool": true,
"string": true,
"byte": true,
"rune": true,
"int": true,
"int8": true,
"int16": true,
"int32": true,
"int64": true,
"uint": true,
"uint8": true,
"uint16": true,
"uint32": true,
"uint64": true,
"float32": true,
"float64": true,
"Slice": true,
"StringSlice": true,
}
ShortNameTypeMap = map[string]string{
"bool": "b",
"string": "s",
"byte": "b",
"rune": "r",
"int": "i",
"int8": "i",
"int16": "i",
"int32": "i",
"int64": "i",
"uint": "u",
"uint8": "u",
"uint16": "u",
"uint32": "u",
"uint64": "u",
"float32": "f",
"float64": "f",
}
ConflictedShortNames = map[string]bool{
"context": true,
"errors": true,
"fmt": true,
"regexp": true,
"strings": true,
"time": true,
"iterator": true,
"spanner": true,
"civil": true,
"codes": true,
"status": true,
}
)
// basicDataSet is used for template data for yo_db and yo_package.
type basicDataSet struct {
Package string
TableMap map[string]*internal.Type
}
// templateSet is a set of templates.
type templateSet struct {
funcs template.FuncMap
l func(string) ([]byte, error)
tpls map[string]*template.Template
}
// Execute executes a specified template in the template set using the supplied
// obj as its parameters and writing the output to w.
func (ts *templateSet) Execute(w io.Writer, name string, obj interface{}) error {
tpl, ok := ts.tpls[name]
if !ok {
// attempt to load and parse the template
buf, err := ts.l(name)
if err != nil {
return err
}
// parse template
tpl, err = template.New(name).Funcs(ts.funcs).Parse(string(buf))
if err != nil {
return err
}
}
return tpl.Execute(w, obj)
}