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// Copyright 2017 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package printer provides support for writing generated code.
package printer
import (
"fmt"
)
const indentation = " "
// Code represents a file of code to be printed.
type Code struct {
text string
indent int
}
// Print adds a line of code using the current indentation. Accepts printf-style format strings and arguments.
func (c *Code) Print(args ...interface{}) {
if len(args) > 0 {
for i := 0; i < c.indent; i++ {
c.text += indentation
}
c.text += fmt.Sprintf(args[0].(string), args[1:]...)
}
c.text += "\n"
}
// String returns the accumulated code as a string.
func (c *Code) String() string {
return c.text
}
// Indent adds one level of indentation.
func (c *Code) Indent() {
c.indent++
}
// Outdent remvoes one level of indentation.
func (c *Code) Outdent() {
c.indent--
if c.indent < 0 {
c.indent = 0
}
}
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