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compile and render functions

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This commit is contained in:
Alexander Wang 2024-12-29 14:19:32 -07:00
parent 9e20ed816d
commit 3dee7bbdaf
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GPG key ID: BE3937D0D52D8927
10 changed files with 147 additions and 50 deletions
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3
d2js/d2wasm/api.go
View file

@ -5,6 +5,7 @@ package d2wasm
import (
"encoding/json"
"fmt"
"runtime/debug"
"syscall/js"
)
@ -36,7 +37,7 @@ func wrapWASMCall(fn func(args []js.Value) (interface{}, error)) js.Func {
if r := recover(); r != nil {
resp := WASMResponse{
Error: &WASMError{
Message: fmt.Sprintf("panic recovered: %v", r),
Message: fmt.Sprintf("panic recovered: %v\n%s", r, debug.Stack()),
Code: 500,
},
}

123
d2js/d2wasm/functions.go
View file

@ -3,17 +3,30 @@
package d2wasm
import (
"context"
"encoding/json"
"fmt"
"strings"
"syscall/js"
"oss.terrastruct.com/d2/d2ast"
"oss.terrastruct.com/d2/d2compiler"
"oss.terrastruct.com/d2/d2format"
"oss.terrastruct.com/d2/d2graph"
"oss.terrastruct.com/d2/d2layouts/d2dagrelayout"
"oss.terrastruct.com/d2/d2layouts/d2elklayout"
"oss.terrastruct.com/d2/d2lib"
"oss.terrastruct.com/d2/d2lsp"
"oss.terrastruct.com/d2/d2oracle"
"oss.terrastruct.com/d2/d2parser"
"oss.terrastruct.com/d2/d2renderers/d2fonts"
"oss.terrastruct.com/d2/d2renderers/d2svg"
"oss.terrastruct.com/d2/lib/log"
"oss.terrastruct.com/d2/lib/memfs"
"oss.terrastruct.com/d2/lib/textmeasure"
"oss.terrastruct.com/d2/lib/urlenc"
"oss.terrastruct.com/d2/lib/version"
"oss.terrastruct.com/util-go/go2"
)
func GetParentID(args []js.Value) (interface{}, error) {
@ -96,13 +109,62 @@ func GetRefRanges(args []js.Value) (interface{}, error) {
func Compile(args []js.Value) (interface{}, error) {
if len(args) < 1 {
return nil, &WASMError{Message: "missing script argument", Code: 400}
return nil, &WASMError{Message: "missing JSON argument", Code: 400}
}
var input CompileRequest
if err := json.Unmarshal([]byte(args[0].String()), &input); err != nil {
return nil, &WASMError{Message: "invalid JSON input", Code: 400}
}
script := args[0].String()
g, _, err := d2compiler.Compile("", strings.NewReader(script), &d2compiler.CompileOptions{
if input.FS == nil {
return nil, &WASMError{Message: "missing 'fs' field in input JSON", Code: 400}
}
if _, ok := input.FS["index"]; !ok {
return nil, &WASMError{Message: "missing 'index' file in input fs", Code: 400}
}
fs, err := memfs.New(input.FS)
if err != nil {
return nil, &WASMError{Message: fmt.Sprintf("invalid fs input: %s", err.Error()), Code: 400}
}
ruler, err := textmeasure.NewRuler()
if err != nil {
return nil, &WASMError{Message: fmt.Sprintf("text ruler cannot be initialized: %s", err.Error()), Code: 500}
}
ctx := log.WithDefault(context.Background())
layoutFunc := d2dagrelayout.DefaultLayout
if input.Opts != nil && input.Opts.Layout != nil {
switch *input.Opts.Layout {
case "dagre":
layoutFunc = d2dagrelayout.DefaultLayout
case "elk":
layoutFunc = d2elklayout.DefaultLayout
default:
return nil, &WASMError{Message: fmt.Sprintf("layout option '%s' not recognized", *input.Opts.Layout), Code: 400}
}
}
layoutResolver := func(engine string) (d2graph.LayoutGraph, error) {
return layoutFunc, nil
}
renderOpts := &d2svg.RenderOpts{}
var fontFamily *d2fonts.FontFamily
if input.Opts != nil && input.Opts.Sketch != nil {
fontFamily = go2.Pointer(d2fonts.HandDrawn)
renderOpts.Sketch = input.Opts.Sketch
}
if input.Opts != nil && input.Opts.ThemeID != nil {
renderOpts.ThemeID = input.Opts.ThemeID
}
diagram, g, err := d2lib.Compile(ctx, input.FS["index"], &d2lib.CompileOptions{
UTF16Pos: true,
})
FS: fs,
Ruler: ruler,
LayoutResolver: layoutResolver,
FontFamily: fontFamily,
}, renderOpts)
if err != nil {
if pe, ok := err.(*d2parser.ParseError); ok {
return nil, &WASMError{Message: pe.Error(), Code: 400}
@ -110,12 +172,41 @@ func Compile(args []js.Value) (interface{}, error) {
return nil, &WASMError{Message: err.Error(), Code: 500}
}
newScript := d2format.Format(g.AST)
if script != newScript {
return map[string]string{"result": newScript}, nil
input.FS["index"] = d2format.Format(g.AST)
return CompileResponse{
FS: input.FS,
Diagram: *diagram,
Graph: *g,
}, nil
}
func Render(args []js.Value) (interface{}, error) {
if len(args) < 1 {
return nil, &WASMError{Message: "missing JSON argument", Code: 400}
}
var input RenderRequest
if err := json.Unmarshal([]byte(args[0].String()), &input); err != nil {
return nil, &WASMError{Message: "invalid JSON input", Code: 400}
}
return nil, nil
if input.Diagram == nil {
return nil, &WASMError{Message: "missing 'diagram' field in input JSON", Code: 400}
}
renderOpts := &d2svg.RenderOpts{}
if input.Opts != nil && input.Opts.Sketch != nil {
renderOpts.Sketch = input.Opts.Sketch
}
if input.Opts != nil && input.Opts.ThemeID != nil {
renderOpts.ThemeID = input.Opts.ThemeID
}
out, err := d2svg.Render(input.Diagram, renderOpts)
if err != nil {
return nil, &WASMError{Message: fmt.Sprintf("render failed: %s", err.Error()), Code: 500}
}
return out, nil
}
func GetBoardAtPosition(args []js.Value) (interface{}, error) {
@ -144,7 +235,13 @@ func Encode(args []js.Value) (interface{}, error) {
}
script := args[0].String()
return map[string]string{"result": script}, nil
encoded, err := urlenc.Encode(script)
// should never happen
if err != nil {
return nil, &WASMError{Message: err.Error(), Code: 500}
}
return map[string]string{"result": encoded}, nil
}
func Decode(args []js.Value) (interface{}, error) {
@ -153,6 +250,10 @@ func Decode(args []js.Value) (interface{}, error) {
}
script := args[0].String()
script, err := urlenc.Decode(script)
if err != nil {
return nil, &WASMError{Message: err.Error(), Code: 500}
}
return map[string]string{"result": script}, nil
}
@ -189,7 +290,3 @@ func GetCompletions(args []js.Value) (interface{}, error) {
Items: items,
}, nil
}
type CompletionResponse struct {
Items []map[string]interface{} `json:"items"`
}

32
d2js/d2wasm/types.go
View file

@ -2,7 +2,11 @@
package d2wasm
import "oss.terrastruct.com/d2/d2ast"
import (
"oss.terrastruct.com/d2/d2ast"
"oss.terrastruct.com/d2/d2graph"
"oss.terrastruct.com/d2/d2target"
)
type WASMResponse struct {
Data interface{} `json:"data,omitempty"`
@ -26,3 +30,29 @@ type RefRangesResponse struct {
type BoardPositionResponse struct {
BoardPath []string `json:"boardPath"`
}
type CompileRequest struct {
FS map[string]string `json:"fs"`
Opts *RenderOptions `json:"options"`
}
type RenderOptions struct {
Layout *string `json:"layout"`
Sketch *bool `json:"sketch"`
ThemeID *int64 `json:"themeID"`
}
type CompileResponse struct {
FS map[string]string `json:"fs"`
Diagram d2target.Diagram `json:"diagram"`
Graph d2graph.Graph `json:"graph"`
}
type CompletionResponse struct {
Items []map[string]interface{} `json:"items"`
}
type RenderRequest struct {
Diagram *d2target.Diagram `json:"diagram"`
Opts *RenderOptions `json:"options"`
}

1
d2js/js.go
View file

@ -16,6 +16,7 @@ func main() {
api.Register("getObjOrder", d2wasm.GetObjOrder)
api.Register("getRefRanges", d2wasm.GetRefRanges)
api.Register("compile", d2wasm.Compile)
api.Register("render", d2wasm.Render)
api.Register("getBoardAtPosition", d2wasm.GetBoardAtPosition)
api.Register("encode", d2wasm.Encode)
api.Register("decode", d2wasm.Decode)

2
d2renderers/d2latex/latex.go
View file

@ -1,5 +1,3 @@
//go:build !wasm
package d2latex
import (

11
d2renderers/d2latex/latex_stub.go
View file

@ -1,11 +0,0 @@
//go:build wasm
package d2latex
func Render(s string) (_ string, err error) {
return "", nil
}
func Measure(s string) (width, height int, err error) {
return
}

2
d2renderers/d2svg/d2svg.go
View file

@ -1867,6 +1867,8 @@ func Render(diagram *d2target.Diagram, opts *RenderOpts) ([]byte, error) {
}
darkThemeID = opts.DarkThemeID
scale = opts.Scale
} else {
opts = &RenderOpts{}
}
buf := &bytes.Buffer{}

2
lib/textmeasure/markdown.go
View file

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

17
lib/textmeasure/markdown_js.go
View file

@ -1,17 +0,0 @@
//go:build wasm
package textmeasure
import "oss.terrastruct.com/d2/d2renderers/d2fonts"
func MeasureMarkdown(mdText string, ruler *Ruler, fontFamily *d2fonts.FontFamily, fontSize int) (width, height int, err error) {
return 0, 0, nil
}
func RenderMarkdown(m string) (string, error) {
return "", nil
}
func ReplaceSubstitutionsMarkdown(mdText string, variables map[string]string) string {
return mdText
}

2
lib/textmeasure/substitutions.go
View file

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