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Yuncong Zhang 6 年前
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8f55405d
共有 3 个文件被更改，包括 385 次插入 和 328 次删除
  1. 4
      Samples/UIWidgetsGallery/gallery/demo.cs
  2. 2
      Samples/UIWidgetsGallery/gallery/example_code_parser.cs
  3. 707
      Samples/UIWidgetsGallery/gallery/syntax_highlighter.cs

4
Samples/UIWidgetsGallery/gallery/demo.cs
查看文件


string _exampleCode;
public override void didChangeDependencies() {
ExampleCodeParser.getExampleCode(this.widget.exampleCodeTag, DefaultAssetBundle.of(this.context)).then(
ExampleCodeParser.getExampleCode(this.widget.exampleCodeTag, DefaultAssetBundle.of(this.context)).Then(
(string code) => {
if (this.mounted) {
this.setState(() => { this._exampleCode = code ?? "Example code not found"; });

text: new TextSpan(
style: new TextStyle(fontFamily: "monospace", fontSize: 10.0f),
children: new List<TextSpan> {
DartSyntaxHighlighter(style).format(this._exampleCode)
new DartSyntaxHighlighter(style).format(this._exampleCode)
}
)
)

2
Samples/UIWidgetsGallery/gallery/example_code_parser.cs
查看文件


Dictionary<string, string> _exampleCode;
IPromise<string> getExampleCode(string tag, AssetBundle bundle) {
public IPromise<string> getExampleCode(string tag, AssetBundle bundle) {
if (this._exampleCode == null)
this._parseExampleCode(bundle);
return Promise<string>.Resolved(this._exampleCode[tag]);

707
Samples/UIWidgetsGallery/gallery/syntax_highlighter.cs
查看文件


using System;
using UnityEngine;
using Unity.UIWidgets.material;
using Color = Unity.UIWidgets.ui.Color;
using Unity.UIWidgets.ui;
using TextStyle = Unity.UIWidgets.painting.TextStyle;
namespace UIWidgetsGallery.gallery {
public class SyntaxHighlighterStyle {

this.classStyle = classStyle;
this.constantStyle = constantStyle;
}
static SyntaxHighlighterStyle lightThemeStyle() {
return new SyntaxHighlighterStyle(
baseStyle: new TextStyle(color: new Color(0xFF000000)),
numberStyle: new TextStyle(color: new Color(0xFF1565C0)),
commentStyle: new TextStyle(color: new Color(0xFF9E9E9E)),
keywordStyle: new TextStyle(color: new Color(0xFF9C27B0)),
stringStyle: new TextStyle(color: new Color(0xFF43A047)),
punctuationStyle: new TextStyle(color: new Color(0xFF000000)),
classStyle: new TextStyle(color: new Color(0xFF512DA8)),
constantStyle: new TextStyle(color: new Color(0xFF795548))
);
}
public static SyntaxHighlighterStyle darkThemeStyle() {
return new SyntaxHighlighterStyle(
baseStyle: new TextStyle(color: new Color(0xFFFFFFFF)),
numberStyle: new TextStyle(color: new Color(0xFF1565C0)),
commentStyle: new TextStyle(color: new Color(0xFF9E9E9E)),
keywordStyle: new TextStyle(color: new Color(0xFF80CBC4)),
stringStyle: new TextStyle(color: new Color(0xFF009688)),
punctuationStyle: new TextStyle(color: new Color(0xFFFFFFFF)),
classStyle: new TextStyle(color: new Color(0xFF009688)),
constantStyle: new TextStyle(color: new Color(0xFF795548))
);
}
public readonly TextStyle baseStyle;
public readonly TextStyle numberStyle;
public readonly TextStyle commentStyle;
public readonly TextStyle keywordStyle;
public readonly TextStyle stringStyle;
public readonly TextStyle punctuationStyle;
public readonly TextStyle classStyle;
public readonly TextStyle constantStyle;
public static SyntaxHighlighterStyle lightThemeStyle() {
return new SyntaxHighlighterStyle(
baseStyle: new TextStyle(color: new Color(0xFF000000)),
numberStyle: new TextStyle(color: new Color(0xFF1565C0)),
commentStyle: new TextStyle(color: new Color(0xFF9E9E9E)),
keywordStyle: new TextStyle(color: new Color(0xFF9C27B0)),
stringStyle: new TextStyle(color: new Color(0xFF43A047)),
punctuationStyle: new TextStyle(color: new Color(0xFF000000)),
classStyle: new TextStyle(color: new Color(0xFF512DA8)),
constantStyle: new TextStyle(color: new Color(0xFF795548))
);
}
public static SyntaxHighlighterStyle darkThemeStyle() {
return new SyntaxHighlighterStyle(
baseStyle: new TextStyle(color: new Color(0xFFFFFFFF)),
numberStyle: new TextStyle(color: new Color(0xFF1565C0)),
commentStyle: new TextStyle(color: new Color(0xFF9E9E9E)),
keywordStyle: new TextStyle(color: new Color(0xFF80CBC4)),
stringStyle: new TextStyle(color: new Color(0xFF009688)),
punctuationStyle: new TextStyle(color: new Color(0xFFFFFFFF)),
classStyle: new TextStyle(color: new Color(0xFF009688)),
constantStyle: new TextStyle(color: new Color(0xFF795548))
);
}
public readonly TextStyle baseStyle;
public readonly TextStyle numberStyle;
public readonly TextStyle commentStyle;
public readonly TextStyle keywordStyle;
public readonly TextStyle stringStyle;
public readonly TextStyle punctuationStyle;
public readonly TextStyle classStyle;
public readonly TextStyle constantStyle;
public abstract class SyntaxHighlighter { // ignore: one_member_abstracts
public abstract TextSpan format(string src);
public abstract class SyntaxHighlighter {
// ignore: one_member_abstracts
public abstract TextSpan format(string src);
DartSyntaxHighlighter(SyntaxHighlighterStyle _style = null) {
this._spans = new List<_HighlightSpan>{};
this._style = this._style ?? SyntaxHighlighterStyle.darkThemeStyle();
}
SyntaxHighlighterStyle _style;
readonly List<string> _keywords = new List<string> {
"abstract", "as", "assert", "async", "await", "break", "case", "catch",
"class", "const", "continue", "default", "deferred", "do", "dynamic", "else",
"enum", "export", "external", "extends", "factory", "false", "final",
"finally", "for", "get", "if", "implements", "import", "in", "is", "library",
"new", "null", "operator", "part", "rethrow", "return", "set", "static",
"super", "switch", "sync", "this", "throw", "true", "try", "typedef", "var",
"void", "while", "with", "yield"
};
readonly List<string> _builtInTypes = new List<string>{
"int", "double", "num", "bool"
};
string _src;
StringScanner _scanner;
List<_HighlightSpan> _spans;
public override TextSpan format(string src) {
this._src = src;
this._scanner = new StringScanner(this._src);
if (this._generateSpans()) {
// Successfully parsed the code
List<TextSpan> formattedText = new List<TextSpan>{};
int currentPosition = 0;
foreach (_HighlightSpan span in this._spans) {
if (currentPosition != span.start)
formattedText.Add(new TextSpan(text: this._src.Substring(currentPosition, span.start)));
formattedText.Add(new TextSpan(style: span.textStyle(this._style), text: span.textForSpan(this._src)));
currentPosition = span.end;
}
if (currentPosition != this._src.Length)
formattedText.Add(new TextSpan(text: this._src.Substring(currentPosition, this._src.Length)));
return new TextSpan(style: this._style.baseStyle, children: formattedText);
} else {
// Parsing failed, return with only basic formatting
return new TextSpan(style: this._style.baseStyle, text: src);
public DartSyntaxHighlighter(SyntaxHighlighterStyle _style = null) {
this._spans = new List<_HighlightSpan> { };
this._style = this._style ?? SyntaxHighlighterStyle.darkThemeStyle();
}
bool _generateSpans() {
int lastLoopPosition = this._scanner.position;
while (!this._scanner.isDone) {
// Skip White space
this._scanner.scan(new Regex(@"\s+"));
// Block comments
if (this._scanner.scan(new Regex(@"/\*(.|\n)*\*/"))) {
this._spans.Add(new _HighlightSpan(
_HighlightType.comment,
this._scanner.lastMatch.start,
this._scanner.lastMatch.end
));
continue;
}
// Line comments
if (this._scanner.scan("//")) {
int startComment = this._scanner.lastMatch.start;
bool eof = false;
int endComment;
if (this._scanner.scan(new Regex(@".*\n"))) {
endComment = this._scanner.lastMatch.end - 1;
} else {
eof = true;
endComment = this._src.Length;
SyntaxHighlighterStyle _style;
readonly List<string> _keywords = new List<string> {
"abstract", "as", "assert", "async", "await", "break", "case", "catch",
"class", "const", "continue", "default", "deferred", "do", "dynamic", "else",
"enum", "export", "external", "extends", "factory", "false", "final",
"finally", "for", "get", "if", "implements", "import", "in", "is", "library",
"new", "null", "operator", "part", "rethrow", "return", "set", "static",
"super", "switch", "sync", "this", "throw", "true", "try", "typedef", "var",
"void", "while", "with", "yield"
};
readonly List<string> _builtInTypes = new List<string> {
"int", "double", "num", "bool"
};
string _src;
StringScanner _scanner;
List<_HighlightSpan> _spans;
public override TextSpan format(string src) {
this._src = src;
this._scanner = new StringScanner(this._src);
if (this._generateSpans()) {
// Successfully parsed the code
List<TextSpan> formattedText = new List<TextSpan> { };
int currentPosition = 0;
foreach (_HighlightSpan span in this._spans) {
if (currentPosition != span.start) {
formattedText.Add(new TextSpan(text: this._src.Substring(currentPosition, span.start)));
}
formattedText.Add(new TextSpan(style: span.textStyle(this._style),
text: span.textForSpan(this._src)));
currentPosition = span.end;
}
if (currentPosition != this._src.Length) {
formattedText.Add(new TextSpan(text: this._src.Substring(currentPosition, this._src.Length)));
}
return new TextSpan(style: this._style.baseStyle, children: formattedText);
this._spans.Add(new _HighlightSpan(
_HighlightType.comment,
startComment,
endComment
));
if (eof)
break;
continue;
}
// Raw r"String"
if (this._scanner.scan(new Regex(@"r"".*"""))) {
this._spans.Add(new _HighlightSpan(
_HighlightType._string,
this._scanner.lastMatch.start,
this._scanner.lastMatch.end
));
continue;
}
// Raw r"String"
if (this._scanner.scan(new Regex(@"r"".*"""))) {
this._spans.Add(new _HighlightSpan(
_HighlightType._string,
this._scanner.lastMatch.start,
this._scanner.lastMatch.end
));
continue;
}
// Multiline """String"""
if (this._scanner.scan(new Regex(@"""""""(?:[^""\\]|\\(.|\n))*"""""""))) {
this._spans.Add(new _HighlightSpan(
_HighlightType._string,
this._scanner.lastMatch.start,
this._scanner.lastMatch.end
));
continue;
}
// Multiline '''String'''
if (this._scanner.scan(new Regex(@"'''(?:[^""\\]|\\(.|\n))*'''"))) {
this._spans.Add(new _HighlightSpan(
_HighlightType._string,
this._scanner.lastMatch.start,
this._scanner.lastMatch.end
));
continue;
}
// "String"
if (this._scanner.scan(new Regex(@"""(?:[^""\\]|\\.)*"""))) {
this._spans.Add(new _HighlightSpan(
_HighlightType._string,
this._scanner.lastMatch.start,
this._scanner.lastMatch.end
));
continue;
}
// "String"
if (this._scanner.scan(new Regex(@"""(?:[^""\\]|\\.)*"""))) {
this._spans.Add(new _HighlightSpan(
_HighlightType._string,
this._scanner.lastMatch.start,
this._scanner.lastMatch.end
));
continue;
}
// Double
if (this._scanner.scan(new Regex(@"\d+\.\d+"))) {
this._spans.Add(new _HighlightSpan(
_HighlightType.number,
this._scanner.lastMatch.start,
this._scanner.lastMatch.end
));
continue;
}
// Integer
if (this._scanner.scan(new Regex(@"\d+"))) {
this._spans.Add(new _HighlightSpan(
_HighlightType.number,
this._scanner.lastMatch.start,
this._scanner.lastMatch.end)
);
continue;
}
// Punctuation
if (this._scanner.scan(new Regex(@"[\[\]{}().!=<>&\|\?\+\-\*/%\^~;:,]"))) {
this._spans.Add(new _HighlightSpan(
_HighlightType.punctuation,
this._scanner.lastMatch.start,
this._scanner.lastMatch.end
));
continue;
}
// Meta data
if (this._scanner.scan(new Regex(@"@\w+"))) {
this._spans.Add(new _HighlightSpan(
_HighlightType.keyword,
this._scanner.lastMatch.start,
this._scanner.lastMatch.end
));
continue;
}
// Words
if (this._scanner.scan(new Regex(@"\w+"))) {
_HighlightType? type = null;
String word = this._scanner.lastMatch[0];
if (word.StartsWith("_"))
word = word.Substring(1);
else {
// Parsing failed, return with only basic formatting
return new TextSpan(style: this._style.baseStyle, text: src);
}
}
bool _generateSpans() {
int lastLoopPosition = this._scanner.position;
while (!this._scanner.isDone) {
// Skip White space
this._scanner.scan(new Regex(@"\s+"));
// Block comments
if (this._scanner.scan(new Regex(@"/\*(.|\n)*\*/"))) {
this._spans.Add(new _HighlightSpan(
_HighlightType.comment,
this._scanner.lastMatch.Index,
this._scanner.lastMatch.Index + this._scanner.lastMatch.Length
));
continue;
}
// Line comments
if (this._scanner.scan(new Regex(@"//"))) {
int startComment = this._scanner.lastMatch.Index;
bool eof = false;
int endComment;
if (this._scanner.scan(new Regex(@".*\n"))) {
endComment = this._scanner.lastMatch.Index + this._scanner.lastMatch.Length - 1;
}
else {
eof = true;
endComment = this._src.Length;
}
this._spans.Add(new _HighlightSpan(
_HighlightType.comment,
startComment,
endComment
));
if (eof) {
break;
}
continue;
}
// Raw r"String"
if (this._scanner.scan(new Regex(@"r"".*"""))) {
this._spans.Add(new _HighlightSpan(
_HighlightType._string,
this._scanner.lastMatch.Index,
this._scanner.lastMatch.Index + this._scanner.lastMatch.Length
));
continue;
}
// Raw r"String"
if (this._scanner.scan(new Regex(@"r"".*"""))) {
this._spans.Add(new _HighlightSpan(
_HighlightType._string,
this._scanner.lastMatch.Index,
this._scanner.lastMatch.Index + this._scanner.lastMatch.Length
));
continue;
}
// Multiline """String"""
if (this._scanner.scan(new Regex(@"""""""(?:[^""\\]|\\(.|\n))*"""""""))) {
this._spans.Add(new _HighlightSpan(
_HighlightType._string,
this._scanner.lastMatch.Index,
this._scanner.lastMatch.Index + this._scanner.lastMatch.Length
));
continue;
}
// Multiline '''String'''
if (this._scanner.scan(new Regex(@"'''(?:[^""\\]|\\(.|\n))*'''"))) {
this._spans.Add(new _HighlightSpan(
_HighlightType._string,
this._scanner.lastMatch.Index,
this._scanner.lastMatch.Index + this._scanner.lastMatch.Length
));
continue;
}
// "String"
if (this._scanner.scan(new Regex(@"""(?:[^""\\]|\\.)*"""))) {
this._spans.Add(new _HighlightSpan(
_HighlightType._string,
this._scanner.lastMatch.Index,
this._scanner.lastMatch.Index + this._scanner.lastMatch.Length
));
continue;
}
// "String"
if (this._scanner.scan(new Regex(@"""(?:[^""\\]|\\.)*"""))) {
this._spans.Add(new _HighlightSpan(
_HighlightType._string,
this._scanner.lastMatch.Index,
this._scanner.lastMatch.Index + this._scanner.lastMatch.Length
));
continue;
}
// Double
if (this._scanner.scan(new Regex(@"\d+\.\d+"))) {
this._spans.Add(new _HighlightSpan(
_HighlightType.number,
this._scanner.lastMatch.Index,
this._scanner.lastMatch.Index + this._scanner.lastMatch.Length
));
continue;
}
// Integer
if (this._scanner.scan(new Regex(@"\d+"))) {
this._spans.Add(new _HighlightSpan(
_HighlightType.number,
this._scanner.lastMatch.Index,
this._scanner.lastMatch.Index + this._scanner.lastMatch.Length)
);
continue;
}
// Punctuation
if (this._scanner.scan(new Regex(@"[\[\]{}().!=<>&\|\?\+\-\*/%\^~;:,]"))) {
this._spans.Add(new _HighlightSpan(
_HighlightType.punctuation,
this._scanner.lastMatch.Index,
this._scanner.lastMatch.Index + this._scanner.lastMatch.Length
));
continue;
}
// Meta data
if (this._scanner.scan(new Regex(@"@\w+"))) {
this._spans.Add(new _HighlightSpan(
_HighlightType.keyword,
this._scanner.lastMatch.Index,
this._scanner.lastMatch.Index + this._scanner.lastMatch.Length
));
continue;
}
// Words
if (this._scanner.scan(new Regex(@"\w+"))) {
_HighlightType? type = null;
string word = this._scanner.lastMatch.Groups[0].Value;
if (word.StartsWith("_")) {
word = word.Substring(1);
}
if (this._keywords.Contains(word)) {
type = _HighlightType.keyword;
}
else if (this._builtInTypes.Contains(word)) {
type = _HighlightType.keyword;
}
else if (this._firstLetterIsUpperCase(word)) {
type = _HighlightType.klass;
}
else if (word.Length >= 2 && word.StartsWith("k") &&
this._firstLetterIsUpperCase(word.Substring(1))) {
type = _HighlightType.constant;
}
if (type != null) {
this._spans.Add(new _HighlightSpan(
type,
this._scanner.lastMatch.Index,
this._scanner.lastMatch.Index + this._scanner.lastMatch.Length
));
}
}
// Check if this loop did anything
if (lastLoopPosition == this._scanner.position) {
// Failed to parse this file, abort gracefully
return false;
}
if (this._keywords.Contains(word))
type = _HighlightType.keyword;
else if (this._builtInTypes.Contains(word))
type = _HighlightType.keyword;
else if (this._firstLetterIsUpperCase(word))
type = _HighlightType.klass;
else if (word.Length >= 2 && word.StartsWith("k") && this._firstLetterIsUpperCase(word.Substring(1)))
type = _HighlightType.constant;
if (type != null) {
this._spans.Add(new _HighlightSpan(
type,
this._scanner.lastMatch.start,
this._scanner.lastMatch.end
));
lastLoopPosition = this._scanner.position;
}
// Check if this loop did anything
if (lastLoopPosition == this._scanner.position) {
// Failed to parse this file, abort gracefully
return false;
}
lastLoopPosition = this._scanner.position;
this._simplify();
return true;
this._simplify();
return true;
}
void _simplify() {
for (int i = this._spans.Count - 2; i >= 0; i -= 1) {
if (this._spans[i].type == this._spans[i + 1].type && this._spans[i].end == this._spans[i + 1].start) {
this._spans[i] = new _HighlightSpan(
this._spans[i].type,
this._spans[i].start,
this._spans[i + 1].end
);
this._spans.RemoveAt(i + 1);
}
void _simplify() {
for (int i = this._spans.Count - 2; i >= 0; i -= 1) {
if (this._spans[i].type == this._spans[i + 1].type && this._spans[i].end == this._spans[i + 1].start) {
this._spans[i] = new _HighlightSpan(
this._spans[i].type,
this._spans[i].start,
this._spans[i + 1].end
);
this._spans.RemoveAt(i + 1);
}
}
}
bool _firstLetterIsUpperCase(String str) {
if (str.isNotEmpty()) {
string first = str.Substring(0, 1);
return first == first.ToUpper();
bool _firstLetterIsUpperCase(string str) {
if (str.isNotEmpty()) {
string first = str.Substring(0, 1);
return first == first.ToUpper();
}
return false;
return false;
}
number,
comment,
keyword,
_string,
punctuation,
klass,
constant
number,
comment,
keyword,
_string,
punctuation,
klass,
constant
class _HighlightSpan {
public _HighlightSpan(_HighlightType? type, int start, int end) {
this.type = type;

public readonly _HighlightType? type;
public readonly int start;
public readonly int end;
public String textForSpan(string src) {
return src.Substring(this.start, this.end);
}
public TextStyle textStyle(SyntaxHighlighterStyle style) {
if (this.type == _HighlightType.number)
return style.numberStyle;
else if (this.type == _HighlightType.comment)
return style.commentStyle;
else if (this.type == _HighlightType.keyword)
return style.keywordStyle;
else if (this.type == _HighlightType._string)
return style.stringStyle;
else if (this.type == _HighlightType.punctuation)
return style.punctuationStyle;
else if (this.type == _HighlightType.klass)
return style.classStyle;
else if (this.type == _HighlightType.constant)
return style.constantStyle;
else
return style.baseStyle;
}
public readonly _HighlightType? type;
public readonly int start;
public readonly int end;
public string textForSpan(string src) {
return src.Substring(this.start, this.end);
}
public TextStyle textStyle(SyntaxHighlighterStyle style) {
if (this.type == _HighlightType.number) {
return style.numberStyle;
}
else if (this.type == _HighlightType.comment) {
return style.commentStyle;
}
else if (this.type == _HighlightType.keyword) {
return style.keywordStyle;
}
else if (this.type == _HighlightType._string) {
return style.stringStyle;
}
else if (this.type == _HighlightType.punctuation) {
return style.punctuationStyle;
}
else if (this.type == _HighlightType.klass) {
return style.classStyle;
}
else if (this.type == _HighlightType.constant) {
return style.constantStyle;
}
else {
return style.baseStyle;
}
}
public class StringScanner {
string _source { get; set; }
public int position { get; set; }
public Match lastMatch {
get { return this._lastMatch; }
}
Match _lastMatch;
public StringScanner(string source) {
this._source = source;
this.position = 0;
}
public override string ToString() {
return this.isDone ? "" : this._source.Substring(this.position);
}
public bool isDone {
get { return this.position >= this._source.Length; }
}
public bool scan(Regex regex) {
var match = regex.Match(this.ToString());
if (match.Success) {
this.position += match.Length;
this._lastMatch = match;
return true;
}
else {
return false;
}
}
}
}
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