Combine code generation commands
This commit is contained in:
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2e5426d211
commit
6664713f32
@ -2,8 +2,7 @@ package hatmill
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import "io"
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//go:generate go run ./internal/elementgen/main.go
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//go:generate go run ./internal/attribgen/main.go
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//go:generate go run ./internal/codegen/codegen.go
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// Term represents a fragment of HTML markup, and is one of EmptyElement, ParentElement, or Text.
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type Term interface {
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@ -1,11 +0,0 @@
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# attribgen
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attribgen reads simple descriptions of HTML element attributes from
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`attribs.txt` and generates Go functions to create them. The file contains
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one description per line. Each description is in the form
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```
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attribute-name attribute-type
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```
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where `attribute-name` is the lowercase name of the attribute, and
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`attribute-type` is either `string` for normal attributes (e.g. `id`, 'style')
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or `bool` for boolean attributes (e.g. `disabled`).
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@ -1,87 +0,0 @@
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package main
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import (
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"bufio"
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"bytes"
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"fmt"
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"go/format"
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"io/ioutil"
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"log"
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"os"
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"strings"
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)
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const (
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inputPath = "attribs.txt"
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outputPath = "attribs.go"
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packageName = "hatmill"
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boolType = "bool"
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stringType = "string"
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stringTemplate = `func %s(value string) Attrib {
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return Attrib{
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Key: "%s",
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Value: value,
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}
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}
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`
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boolTemplate = `func %s() Attrib {
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return Attrib{
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Key: "%s",
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}
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}
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`
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)
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func main() {
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inputFile, err := os.Open(inputPath)
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if err != nil {
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log.Fatal(err)
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}
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defer inputFile.Close()
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var output bytes.Buffer
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fmt.Fprintln(&output, "// GENERATED BY gitlab.codemonkeysoftware.net/b/hatmill/internal/attribgen")
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fmt.Fprintln(&output, "// DO NOT EDIT!\n")
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fmt.Fprintln(&output, "package ", packageName, "\n")
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scanner := bufio.NewScanner(inputFile)
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for scanner.Scan() {
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line := scanner.Text()
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if line == "" {
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continue
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}
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var attribName, attribType string
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_, err = fmt.Sscanf(line, "%s %s", &attribName, &attribType)
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if err != nil {
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log.Fatalf("error parsing input line: %s", err)
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}
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var template string
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switch attribType {
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case boolType:
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template = boolTemplate
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case stringType:
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template = stringTemplate
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default:
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log.Fatal("unknown attribute type: ", attribType)
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}
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fmt.Fprintf(&output, template, strings.Title(attribName), attribName)
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}
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if err := scanner.Err(); err != nil {
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log.Fatalf("error scanning input: %s", err)
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}
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formatted, err := format.Source(output.Bytes())
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if err != nil {
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log.Fatalf("error formatting output: %s", err)
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}
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err = ioutil.WriteFile(outputPath, formatted, 0644)
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if err != nil {
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log.Fatalf("error writing output: %s", err)
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}
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}
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21
internal/codegen/README.md
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21
internal/codegen/README.md
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@ -0,0 +1,21 @@
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# codegen
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codegen reads simple descriptions of HTML elements and attributes from
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`elements.txt` and `attribs.txt`, respectively, and generates Go functions to
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create them.
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The files contains one description per line. Each attribute description is in
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the form
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```
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attribute-name attribute-type
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```
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where `attribute-name` is the lowercase name of the attribute, and
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`attribute-type` is either `string` for normal attributes (e.g. `id`, 'style')
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or `bool` for boolean attributes (e.g. `disabled`). Each element description is
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in the form
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```
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tag-name element-type
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```
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where `tag-name` is the lowercase name of the element, and `element-type` is
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either `empty` for empty elements (e.g. `img`, 'br') or `parent` for elements
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that can have child nodes (e.g. 'div', 'body').
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174
internal/codegen/codegen.go
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174
internal/codegen/codegen.go
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@ -0,0 +1,174 @@
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package main
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import (
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"bufio"
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"bytes"
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"fmt"
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"go/format"
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"io/ioutil"
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"log"
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"os"
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"strings"
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)
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const packageName = "hatmill"
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func genElements() {
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const (
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elementInputPath = "elements.txt"
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elementOutputPath = "elements.go"
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parentType = "parent"
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emptyType = "empty"
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parentTemplate = `// %[1]s creates a <%[2]s> element.
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func %[1]s(attribs ...Attrib) func(children ...Term) *ParentElement {
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return func(children ...Term) *ParentElement {
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return &ParentElement{
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EmptyElement: EmptyElement{
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TagName: "%[2]s",
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Attribs: attribs,
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},
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Children: children,
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}
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}
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}
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`
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emptyTemplate = `// %[1]s creates a <%[2]s> element.
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func %[1]s(attribs ...Attrib) EmptyElement {
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return EmptyElement{
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TagName: "%[2]s",
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Attribs: attribs,
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}
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}
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`
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)
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inputFile, err := os.Open(elementInputPath)
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if err != nil {
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log.Fatal(err)
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}
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defer inputFile.Close()
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var output bytes.Buffer
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fmt.Fprintln(&output, "// GENERATED BY gitlab.codemonkeysoftware.net/b/hatmill/internal/elementgen")
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fmt.Fprintln(&output, "// DO NOT EDIT!\n")
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fmt.Fprintln(&output, "package ", packageName, "\n")
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scanner := bufio.NewScanner(inputFile)
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for scanner.Scan() {
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line := scanner.Text()
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if line == "" {
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continue
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}
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var tagName, elemType string
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_, err = fmt.Sscanf(line, "%s %s", &tagName, &elemType)
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if err != nil {
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log.Fatalf("error parsing input line: %s", err)
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}
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var template string
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switch elemType {
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case parentType:
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template = parentTemplate
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case emptyType:
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template = emptyTemplate
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default:
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log.Fatal("unknown element type: ", elemType)
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}
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fmt.Fprintf(&output, template, strings.Title(tagName), tagName)
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}
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if err := scanner.Err(); err != nil {
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log.Fatalf("error scanning input: %s", err)
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}
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formatted, err := format.Source(output.Bytes())
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if err != nil {
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log.Fatalf("error formatting output: %s", err)
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}
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err = ioutil.WriteFile(elementOutputPath, formatted, 0644)
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if err != nil {
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log.Fatalf("error writing output: %s", err)
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}
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}
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func genAttribs() {
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const (
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inputPath = "attribs.txt"
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outputPath = "attribs.go"
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boolType = "bool"
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stringType = "string"
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stringTemplate = `func %s(value string) Attrib {
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return Attrib{
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Key: "%s",
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Value: value,
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}
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}
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`
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boolTemplate = `func %s() Attrib {
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return Attrib{
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Key: "%s",
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}
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}
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`
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)
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inputFile, err := os.Open(inputPath)
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if err != nil {
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log.Fatal(err)
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}
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defer inputFile.Close()
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var output bytes.Buffer
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fmt.Fprintln(&output, "// GENERATED BY gitlab.codemonkeysoftware.net/b/hatmill/internal/attribgen")
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fmt.Fprintln(&output, "// DO NOT EDIT!\n")
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fmt.Fprintln(&output, "package ", packageName, "\n")
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scanner := bufio.NewScanner(inputFile)
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for scanner.Scan() {
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line := scanner.Text()
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if line == "" {
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continue
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}
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var attribName, attribType string
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_, err = fmt.Sscanf(line, "%s %s", &attribName, &attribType)
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if err != nil {
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log.Fatalf("error parsing input line: %s", err)
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}
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var template string
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switch attribType {
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case boolType:
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template = boolTemplate
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case stringType:
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template = stringTemplate
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default:
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log.Fatal("unknown attribute type: ", attribType)
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}
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fmt.Fprintf(&output, template, strings.Title(attribName), attribName)
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}
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if err := scanner.Err(); err != nil {
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log.Fatalf("error scanning input: %s", err)
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}
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formatted, err := format.Source(output.Bytes())
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if err != nil {
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log.Fatalf("error formatting output: %s", err)
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}
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err = ioutil.WriteFile(outputPath, formatted, 0644)
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if err != nil {
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log.Fatalf("error writing output: %s", err)
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}
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}
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func main() {
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genElements()
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genAttribs()
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}
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@ -1,11 +0,0 @@
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# elementgen
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elementgen reads simple descriptions of HTML elements from `elements.txt`
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and generates Go functions to create them. The file contains one description
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per line. Each description is in the form
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```
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tag-name element-type
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```
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where `tag-name` is the lowercase name of the element, and `element-type` is
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either `empty` for empty elements (e.g. `img`, 'br') or `parent` for elements
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that can have child nodes (e.g. 'div', 'body').
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@ -1,95 +0,0 @@
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package main
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import (
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"bufio"
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"bytes"
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"fmt"
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"go/format"
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"io/ioutil"
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"log"
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"os"
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"strings"
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)
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const (
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inputPath = "elements.txt"
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outputPath = "elements.go"
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packageName = "hatmill"
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parentType = "parent"
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emptyType = "empty"
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parentTemplate = `// %[1]s creates a <%[2]s> element.
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func %[1]s(attribs ...Attrib) func(children ...Term) *ParentElement {
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return func(children ...Term) *ParentElement {
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return &ParentElement{
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EmptyElement: EmptyElement{
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TagName: "%[2]s",
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Attribs: attribs,
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},
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Children: children,
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}
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}
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}
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`
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emptyTemplate = `// %[1]s creates a <%[2]s> element.
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func %[1]s(attribs ...Attrib) EmptyElement {
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return EmptyElement{
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TagName: "%[2]s",
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Attribs: attribs,
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}
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}
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`
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)
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func main() {
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inputFile, err := os.Open(inputPath)
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if err != nil {
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log.Fatal(err)
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}
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defer inputFile.Close()
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var output bytes.Buffer
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fmt.Fprintln(&output, "// GENERATED BY gitlab.codemonkeysoftware.net/b/hatmill/internal/elementgen")
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fmt.Fprintln(&output, "// DO NOT EDIT!\n")
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fmt.Fprintln(&output, "package ", packageName, "\n")
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scanner := bufio.NewScanner(inputFile)
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for scanner.Scan() {
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line := scanner.Text()
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if line == "" {
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continue
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}
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var tagName, elemType string
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_, err = fmt.Sscanf(line, "%s %s", &tagName, &elemType)
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if err != nil {
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log.Fatalf("error parsing input line: %s", err)
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}
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var template string
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switch elemType {
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case parentType:
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template = parentTemplate
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case emptyType:
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template = emptyTemplate
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default:
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log.Fatal("unknown element type: ", elemType)
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}
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fmt.Fprintf(&output, template, strings.Title(tagName), tagName)
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}
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if err := scanner.Err(); err != nil {
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log.Fatalf("error scanning input: %s", err)
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}
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formatted, err := format.Source(output.Bytes())
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if err != nil {
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log.Fatalf("error formatting output: %s", err)
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}
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err = ioutil.WriteFile(outputPath, formatted, 0644)
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if err != nil {
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log.Fatalf("error writing output: %s", err)
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}
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}
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