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