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Rewrite lexer from scratch

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Sinai 2021-05-10 15:58:49 +10:00
parent 06122fe8c9
commit caad39bb9a
20 changed files with 650 additions and 937 deletions
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1
README.md
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@ -142,7 +142,6 @@ Building the project should be straight-forward, the references are all inside t
* [ManlyMarco](https://github.com/ManlyMarco) for [Runtime Unity Editor](https://github.com/ManlyMarco/RuntimeUnityEditor) \[[license](THIRDPARTY_LICENSES.md#runtimeunityeditor-license)\], snippets from the REPL Console were used for UnityExplorer's C# Console. * [ManlyMarco](https://github.com/ManlyMarco) for [Runtime Unity Editor](https://github.com/ManlyMarco/RuntimeUnityEditor) \[[license](THIRDPARTY_LICENSES.md#runtimeunityeditor-license)\], snippets from the REPL Console were used for UnityExplorer's C# Console.
* [denikson](https://github.com/denikson) (aka Horse) for [mcs-unity](https://github.com/denikson/mcs-unity) \[no license\], used as the `Mono.CSharp` reference for the C# Console. * [denikson](https://github.com/denikson) (aka Horse) for [mcs-unity](https://github.com/denikson/mcs-unity) \[no license\], used as the `Mono.CSharp` reference for the C# Console.
* [HerpDerpenstine](https://github.com/HerpDerpinstine) for [MelonCoroutines](https://github.com/LavaGang/MelonLoader/blob/6cc958ec23b5e2e8453a73bc2e0d5aa353d4f0d1/MelonLoader.Support.Il2Cpp/MelonCoroutines.cs) \[[license](THIRDPARTY_LICENSES.md#melonloader-license)\], they were included for standalone IL2CPP coroutine support. * [HerpDerpenstine](https://github.com/HerpDerpinstine) for [MelonCoroutines](https://github.com/LavaGang/MelonLoader/blob/6cc958ec23b5e2e8453a73bc2e0d5aa353d4f0d1/MelonLoader.Support.Il2Cpp/MelonCoroutines.cs) \[[license](THIRDPARTY_LICENSES.md#melonloader-license)\], they were included for standalone IL2CPP coroutine support.
* [InGameCodeEditor](https://assetstore.unity.com/packages/tools/gui/ingame-code-editor-144254) \[[license](THIRDPARTY_LICENSES.md#ingamecodeeditor-license)\] was used as the base for the syntax highlighting for UnityExplorer's C# console (`UnityExplorer.UI.Main.CSConsole.Lexer`).
### Disclaimer ### Disclaimer

193
THIRDPARTY_LICENSES.md
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@ -1,6 +1,5 @@
* [RuntimeUnityEditor License](#runtimeunityeditor-license) * [RuntimeUnityEditor License](#runtimeunityeditor-license)
* [MelonLoader License](#melonloader-license) * [MelonLoader License](#melonloader-license)
* [InGameCodeEditor License](#ingamecodeeditor-license)
## RuntimeUnityEditor License ## RuntimeUnityEditor License
@ -873,195 +872,3 @@ Public License instead of this License. But first, please read
See the License for the specific language governing permissions and See the License for the specific language governing permissions and
limitations under the License. limitations under the License.
## InGameCodeEditor License
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
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"You" (or "Your") shall mean an individual or Legal Entity
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Copyright 2020 - 2021 Lava Gang
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66
src/UI/CSConsole/CSConsole.cs
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@ -55,7 +55,7 @@ The following helper methods are available:
#endregion #endregion
public static ScriptEvaluator Evaluator; public static ScriptEvaluator Evaluator;
public static CSLexer Lexer; public static LexerBuilder Lexer;
private static StringBuilder evaluatorOutput; private static StringBuilder evaluatorOutput;
private static HashSet<string> usingDirectives; private static HashSet<string> usingDirectives;
@ -72,7 +72,7 @@ The following helper methods are available:
{ {
try try
{ {
Lexer = new CSLexer(); Lexer = new LexerBuilder();
ResetConsole(false); ResetConsole(false);
Evaluator.Compile("0 == 0"); Evaluator.Compile("0 == 0");
@ -173,8 +173,8 @@ The following helper methods are available:
} }
} }
if (EnableAutoIndent && InputManager.GetKeyDown(KeyCode.Return)) //if (EnableAutoIndent && InputManager.GetKeyDown(KeyCode.Return))
DoAutoIndent(); // DoAutoIndent();
//if (EnableAutocompletes && InputField.isFocused) //if (EnableAutocompletes && InputField.isFocused)
//{ //{
@ -183,55 +183,31 @@ The following helper methods are available:
//} //}
} }
// Invoked at most once per frame
private static void OnConsoleInputChanged(string input) private static void OnConsoleInputChanged(string input)
{ {
// todo update auto completes // todo update auto completes
// todo update syntax highlight // update syntax highlight
Panel.HighlightText.text = Lexer.SyntaxHighlight(input);
} }
// TODO?
//private static void DoAutoIndent()
//{
// int caret = Panel.LastCaretPosition;
// Panel.InputField.Text = Lexer.AutoIndentOnEnter(InputField.text, ref caret);
// InputField.caretPosition = caret;
//
// Panel.InputText.Rebuild(CanvasUpdate.Prelayout);
// InputField.ForceLabelUpdate();
// InputField.Rebuild(CanvasUpdate.Prelayout);
//
// OnConsoleInputChanged(InputField.text);
//}
// Autocompletes // Autocompletes
private static string SyntaxHighlight(string input)
{
var sb = new StringBuilder();
int curIdx = 0;
foreach (var match in Lexer.GetMatches(input))
{
// append non-highlighted text between last match and this
for (int i = curIdx; i < match.startIndex; i++)
sb.Append(input[i]);
// append the highlighted match
sb.Append(match.htmlColorTag);
for (int i = match.startIndex; i < match.endIndex; i++)
sb.Append(input[i]);
sb.Append(SignatureHighlighter.CLOSE_COLOR);
// update the index
curIdx = match.endIndex;
}
return sb.ToString();
}
// Indent
private static void DoAutoIndent()
{
int caret = Panel.LastCaretPosition;
Panel.InputField.Text = Lexer.AutoIndentOnEnter(InputField.text, ref caret);
InputField.caretPosition = caret;
Panel.InputText.Rebuild(CanvasUpdate.Prelayout);
InputField.ForceLabelUpdate();
InputField.Rebuild(CanvasUpdate.Prelayout);
OnConsoleInputChanged(InputField.text);
}
} }
} }

355
src/UI/CSConsole/CSLexer.cs
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@ -1,355 +0,0 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using UnityEngine.UI;
using UnityExplorer.UI.CSharpConsole.Lexer;
namespace UnityExplorer.UI.CSharpConsole
{
public struct LexerMatchInfo
{
public int startIndex;
public int endIndex;
public string htmlColorTag;
}
public enum DelimiterType
{
Start,
End,
};
public class CSLexer
{
private string inputString;
private readonly Matcher[] matchers;
private readonly HashSet<char> startDelimiters;
private readonly HashSet<char> endDelimiters;
private int currentIndex;
private int currentLookaheadIndex;
public char Current { get; private set; }
public char Previous { get; private set; }
public bool EndOfStream => currentLookaheadIndex >= inputString.Length;
public static char indentOpen = '{';
public static char indentClose = '}';
//private static StringBuilder indentBuilder = new StringBuilder();
public static char[] delimiters = new[]
{
'[', ']', '(', ')', '{', '}', ';', ':', ',', '.'
};
private static readonly CommentMatch commentMatcher = new CommentMatch();
private static readonly SymbolMatch symbolMatcher = new SymbolMatch();
private static readonly NumberMatch numberMatcher = new NumberMatch();
private static readonly StringMatch stringMatcher = new StringMatch();
private static readonly KeywordMatch keywordMatcher = new KeywordMatch();
public CSLexer()
{
startDelimiters = new HashSet<char>(delimiters);
endDelimiters = new HashSet<char>(delimiters);
this.matchers = new Matcher[]
{
commentMatcher,
symbolMatcher,
numberMatcher,
stringMatcher,
keywordMatcher,
};
foreach (Matcher lexer in matchers)
{
foreach (char c in lexer.StartChars)
{
if (!startDelimiters.Contains(c))
startDelimiters.Add(c);
}
foreach (char c in lexer.EndChars)
{
if (!endDelimiters.Contains(c))
endDelimiters.Add(c);
}
}
}
public IEnumerable<LexerMatchInfo> GetMatches(string input)
{
if (input == null || matchers == null || matchers.Length == 0)
yield break;
inputString = input;
Current = ' ';
Previous = ' ';
currentIndex = 0;
currentLookaheadIndex = 0;
while (!EndOfStream)
{
bool didMatchLexer = false;
ReadWhiteSpace();
foreach (Matcher matcher in matchers)
{
int startIndex = currentIndex;
bool isMatched = matcher.IsMatch(this);
if (isMatched)
{
int endIndex = currentIndex;
didMatchLexer = true;
yield return new LexerMatchInfo
{
startIndex = startIndex,
endIndex = endIndex,
htmlColorTag = matcher.HexColorTag,
};
break;
}
}
if (!didMatchLexer)
{
ReadNext();
Commit();
}
}
}
// Lexer reading
public char ReadNext()
{
if (EndOfStream)
return '\0';
Previous = Current;
Current = inputString[currentLookaheadIndex];
currentLookaheadIndex++;
return Current;
}
public void Rollback(int amount = -1)
{
if (amount == -1)
currentLookaheadIndex = currentIndex;
else
{
if (currentLookaheadIndex > currentIndex)
currentLookaheadIndex -= amount;
}
int previousIndex = currentLookaheadIndex - 1;
if (previousIndex >= inputString.Length)
Previous = inputString[inputString.Length - 1];
else if (previousIndex >= 0)
Previous = inputString[previousIndex];
else
Previous = ' ';
}
public void Commit()
{
currentIndex = currentLookaheadIndex;
}
public bool IsSpecialSymbol(char character, DelimiterType position = DelimiterType.Start)
{
if (position == DelimiterType.Start)
return startDelimiters.Contains(character);
return endDelimiters.Contains(character);
}
private void ReadWhiteSpace()
{
while (char.IsWhiteSpace(ReadNext()) == true)
Commit();
Rollback();
}
// Auto-indenting
public int GetIndentLevel(string input, int toIndex)
{
bool stringState = false;
int indent = 0;
for (int i = 0; i < toIndex && i < input.Length; i++)
{
char character = input[i];
if (character == '"')
stringState = !stringState;
else if (!stringState && character == indentOpen)
indent++;
else if (!stringState && character == indentClose)
indent--;
}
if (indent < 0)
indent = 0;
return indent;
}
// TODO not quite correct, but almost there.
public string AutoIndentOnEnter(string input, ref int caretPos)
{
var sb = new StringBuilder(input);
bool inString = false;
bool inChar = false;
int currentIndent = 0;
int curLineIndent = 0;
bool prevWasNewLine = true;
// process before caret position
for (int i = 0; i < caretPos; i++)
{
char c = sb[i];
ExplorerCore.Log(i + ": " + c);
// update string/char state
if (!inChar && c == '\"')
inString = !inString;
else if (!inString && c == '\'')
inChar = !inChar;
// continue if inside string or char
if (inString || inChar)
continue;
// check for new line
if (c == '\n')
{
ExplorerCore.Log("new line, resetting line counts");
curLineIndent = 0;
prevWasNewLine = true;
}
// check for indent
else if (c == '\t' && prevWasNewLine)
{
ExplorerCore.Log("its a tab");
if (curLineIndent > currentIndent)
{
ExplorerCore.Log("too many tabs, removing");
// already reached the indent we should have
sb.Remove(i, 1);
i--;
caretPos--;
curLineIndent--;
}
else
curLineIndent++;
}
// remove spaces on new lines
else if (c == ' ' && prevWasNewLine)
{
ExplorerCore.Log("removing newline-space");
sb.Remove(i, 1);
i--;
caretPos--;
}
else
{
if (c == indentClose)
currentIndent--;
if (prevWasNewLine && curLineIndent < currentIndent)
{
ExplorerCore.Log("line is not indented enough");
// line is not indented enough
int diff = currentIndent - curLineIndent;
sb.Insert(i, new string('\t', diff));
caretPos += diff;
i += diff;
}
// check for brackets
if ((c == indentClose || c == indentOpen) && !prevWasNewLine)
{
ExplorerCore.Log("bracket needs new line");
// need to put it on a new line
sb.Insert(i, $"\n{new string('\t', currentIndent)}");
caretPos += 1 + currentIndent;
i += 1 + currentIndent;
}
if (c == indentOpen)
currentIndent++;
prevWasNewLine = false;
}
}
// todo put caret on new line after previous bracket if needed
// indent caret to current indent
// process after caret position, make sure there are equal opened/closed brackets
ExplorerCore.Log("-- after caret --");
for (int i = caretPos; i < sb.Length; i++)
{
char c = sb[i];
ExplorerCore.Log(i + ": " + c);
// update string/char state
if (!inChar && c == '\"')
inString = !inString;
else if (!inString && c == '\'')
inChar = !inChar;
if (inString || inChar)
continue;
if (c == indentOpen)
currentIndent++;
else if (c == indentClose)
currentIndent--;
}
if (currentIndent > 0)
{
ExplorerCore.Log("there are not enough closing brackets, curIndent is " + currentIndent);
// There are not enough close brackets
// TODO this should append in reverse indent order (small indents inserted first, then biggest).
while (currentIndent > 0)
{
ExplorerCore.Log("Inserting closing bracket with " + currentIndent + " indent");
// append the indented '}' on a new line
sb.Insert(caretPos, $"\n{new string('\t', currentIndent - 1)}}}");
currentIndent--;
}
}
//else if (currentIndent < 0)
//{
// // There are too many close brackets
//
// // todo?
//}
return sb.ToString();
}
}
}

52
src/UI/CSConsole/Lexer/CommentLexer.cs Normal file
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@ -0,0 +1,52 @@
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
namespace UnityExplorer.UI.CSharpConsole.Lexers
{
public class CommentLexer : Lexer
{
private enum CommentType
{
Line,
Block
}
protected override Color HighlightColor => new Color(0.34f, 0.65f, 0.29f, 1.0f);
public override bool TryMatchCurrent(LexerBuilder lexer)
{
if (lexer.Current == '/')
{
lexer.PeekNext();
if (lexer.Current == '/')
{
// line comment. read to end of line or file.
do
{
lexer.Commit();
lexer.PeekNext();
}
while (!lexer.EndOrNewLine);
return true;
}
else if (lexer.Current == '*')
{
// block comment, read until end of file or closing '*/'
lexer.PeekNext();
do
{
lexer.PeekNext();
lexer.Commit();
}
while (!lexer.EndOfInput && !(lexer.Current == '/' && lexer.Previous == '*'));
return true;
}
}
return false;
}
}
}

48
src/UI/CSConsole/Lexer/CommentMatch.cs
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@ -1,48 +0,0 @@
using System.Collections.Generic;
using UnityEngine;
namespace UnityExplorer.UI.CSharpConsole.Lexer
{
public class CommentMatch : Matcher
{
public string lineCommentStart = @"//";
public string blockCommentStart = @"/*";
public string blockCommentEnd = @"*/";
public override Color HighlightColor => new Color(0.34f, 0.65f, 0.29f, 1.0f);
public override IEnumerable<char> StartChars => new char[] { lineCommentStart[0], blockCommentStart[0] };
public override IEnumerable<char> EndChars => new char[] { blockCommentEnd[0] };
public override bool IsImplicitMatch(CSLexer lexer) => IsMatch(lexer, lineCommentStart) || IsMatch(lexer, blockCommentStart);
private bool IsMatch(CSLexer lexer, string commentType)
{
if (!string.IsNullOrEmpty(commentType))
{
lexer.Rollback();
bool match = true;
for (int i = 0; i < commentType.Length; i++)
{
if (commentType[i] != lexer.ReadNext())
{
match = false;
break;
}
}
if (match)
{
// Read until end of line or file
while (!IsEndLineOrEndFile(lexer, lexer.ReadNext())) { }
return true;
}
}
return false;
}
private bool IsEndLineOrEndFile(CSLexer lexer, char character) => lexer.EndOfStream || character == '\n' || character == '\r';
}
}

61
src/UI/CSConsole/Lexer/KeywordLexer.cs Normal file
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@ -0,0 +1,61 @@
using System.Collections.Generic;
using System.Text;
using UnityEngine;
namespace UnityExplorer.UI.CSharpConsole.Lexers
{
public class KeywordLexer : Lexer
{
private readonly string[] Keywords = new[] { "add", "as", "ascending", "await", "bool", "break", "by", "byte",
"case", "catch", "char", "checked", "const", "continue", "decimal", "default", "descending", "do", "dynamic",
"else", "equals", "false", "finally", "float", "for", "foreach", "from", "global", "goto", "group", "if", "in",
"int", "into", "is", "join", "let", "lock", "long", "new", "null", "object", "on", "orderby", "out", "ref",
"remove", "return", "sbyte", "select", "short", "sizeof", "stackalloc", "string", "switch", "throw", "true",
"try", "typeof", "uint", "ulong", "ushort", "var", "where", "while", "yield", "abstract", "async", "base",
"class", "delegate", "enum", "explicit", "extern", "fixed", "get", "implicit", "interface", "internal",
"namespace", "operator", "override", "params", "private", "protected", "public", "using", "partial", "readonly",
"sealed", "set", "static", "struct", "this", "unchecked", "unsafe", "value", "virtual", "volatile", "void" };
private readonly Dictionary<int, HashSet<string>> keywordsByLength = new Dictionary<int, HashSet<string>>();
public KeywordLexer()
{
foreach (var kw in Keywords)
{
if (!keywordsByLength.ContainsKey(kw.Length))
keywordsByLength.Add(kw.Length, new HashSet<string>());
keywordsByLength[kw.Length].Add(kw);
}
}
protected override Color HighlightColor => new Color(0.33f, 0.61f, 0.83f, 1.0f);
public override bool TryMatchCurrent(LexerBuilder lexer)
{
if (!lexer.IsDelimiter(lexer.Previous, true))
return false;
int len = 0;
var sb = new StringBuilder();
while (!lexer.EndOfInput)
{
sb.Append(lexer.Current);
len++;
var next = lexer.PeekNext();
if (lexer.IsDelimiter(next, true))
{
lexer.RollbackBy(1);
break;
}
}
if (keywordsByLength.TryGetValue(len, out var keywords) && keywords.Contains(sb.ToString()))
{
lexer.Commit();
return true;
}
return false;
}
}
}

91
src/UI/CSConsole/Lexer/KeywordMatch.cs
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@ -1,91 +0,0 @@
using System.Collections.Generic;
using UnityEngine;
namespace UnityExplorer.UI.CSharpConsole.Lexer
{
public class KeywordMatch : Matcher
{
public string[] Keywords = new[] { "add", "as", "ascending", "await", "bool", "break", "by", "byte",
"case", "catch", "char", "checked", "const", "continue", "decimal", "default", "descending", "do", "dynamic",
"else", "equals", "false", "finally", "float", "for", "foreach", "from", "global", "goto", "group",
"if", "in", "int", "into", "is", "join", "let", "lock", "long", "new", "null", "object", "on", "orderby", "out",
"ref", "remove", "return", "sbyte", "select", "short", "sizeof", "stackalloc", "string",
"switch", "throw", "true", "try", "typeof", "uint", "ulong", "ushort", "var", "where", "while", "yield",
"abstract", "async", "base", "class", "delegate", "enum", "explicit", "extern", "fixed", "get",
"implicit", "interface", "internal", "namespace", "operator", "override", "params", "private", "protected", "public",
"using", "partial", "readonly", "sealed", "set", "static", "struct", "this", "unchecked", "unsafe", "value", "virtual", "volatile", "void" };
public override Color HighlightColor => highlightColor;
public Color highlightColor = new Color(0.33f, 0.61f, 0.83f, 1.0f);
private readonly HashSet<string> shortlist = new HashSet<string>();
private readonly Stack<string> removeList = new Stack<string>();
public override bool IsImplicitMatch(CSLexer lexer)
{
if (!char.IsWhiteSpace(lexer.Previous) &&
!lexer.IsSpecialSymbol(lexer.Previous, DelimiterType.End))
{
return false;
}
shortlist.Clear();
int currentIndex = 0;
char currentChar = lexer.ReadNext();
for (int i = 0; i < Keywords.Length; i++)
{
if (Keywords[i][0] == currentChar)
shortlist.Add(Keywords[i]);
}
if (shortlist.Count == 0)
return false;
do
{
if (lexer.EndOfStream)
{
RemoveLongStrings(currentIndex + 1);
break;
}
currentChar = lexer.ReadNext();
currentIndex++;
if (char.IsWhiteSpace(currentChar) ||
lexer.IsSpecialSymbol(currentChar, DelimiterType.Start))
{
RemoveLongStrings(currentIndex);
lexer.Rollback(1);
break;
}
foreach (string keyword in shortlist)
{
if (currentIndex >= keyword.Length || keyword[currentIndex] != currentChar)
removeList.Push(keyword);
}
while (removeList.Count > 0)
shortlist.Remove(removeList.Pop());
}
while (shortlist.Count > 0);
return shortlist.Count > 0;
}
private void RemoveLongStrings(int length)
{
foreach (string keyword in shortlist)
{
if (keyword.Length > length)
removeList.Push(keyword);
}
while (removeList.Count > 0)
shortlist.Remove(removeList.Pop());
}
}
}

18
src/UI/CSConsole/Lexer/Lexer.cs Normal file
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@ -0,0 +1,18 @@
using System.Collections.Generic;
using UnityEngine;
using System.Linq;
namespace UnityExplorer.UI.CSharpConsole.Lexers
{
public abstract class Lexer
{
public virtual IEnumerable<char> Delimiters => Enumerable.Empty<char>();
protected abstract Color HighlightColor { get; }
public string ColorTag => colorTag ?? (colorTag = "<color=#" + HighlightColor.ToHex() + ">");
private string colorTag;
public abstract bool TryMatchCurrent(LexerBuilder lexer);
}
}

31
src/UI/CSConsole/Lexer/Matcher.cs
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@ -1,31 +0,0 @@
using System.Collections.Generic;
using UnityEngine;
using System.Linq;
namespace UnityExplorer.UI.CSharpConsole.Lexer
{
public abstract class Matcher
{
public abstract Color HighlightColor { get; }
public string HexColorTag => htmlColor ?? (htmlColor = "<color=#" + HighlightColor.ToHex() + ">");
private string htmlColor;
public virtual IEnumerable<char> StartChars => Enumerable.Empty<char>();
public virtual IEnumerable<char> EndChars => Enumerable.Empty<char>();
public abstract bool IsImplicitMatch(CSLexer lexer);
public bool IsMatch(CSLexer lexer)
{
if (IsImplicitMatch(lexer))
{
lexer.Commit();
return true;
}
lexer.Rollback();
return false;
}
}
}

31
src/UI/CSConsole/Lexer/NumberLexer.cs Normal file
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@ -0,0 +1,31 @@
using UnityEngine;
namespace UnityExplorer.UI.CSharpConsole.Lexers
{
public class NumberLexer : Lexer
{
protected override Color HighlightColor => new Color(0.58f, 0.33f, 0.33f, 1.0f);
private bool IsNumeric(char c) => char.IsNumber(c) || c == '.';
public override bool TryMatchCurrent(LexerBuilder lexer)
{
// previous character must be whitespace or delimiter
if (!lexer.IsDelimiter(lexer.Previous, true))
return false;
if (!IsNumeric(lexer.Current))
return false;
while (!lexer.EndOfInput)
{
lexer.Commit();
if (!IsNumeric(lexer.PeekNext()))
break;
}
return true;
}
}
}

39
src/UI/CSConsole/Lexer/NumberMatch.cs
View File

@ -1,39 +0,0 @@
using UnityEngine;
namespace UnityExplorer.UI.CSharpConsole.Lexer
{
public class NumberMatch : Matcher
{
public override Color HighlightColor => new Color(0.58f, 0.33f, 0.33f, 1.0f);
public override bool IsImplicitMatch(CSLexer lexer)
{
if (!char.IsWhiteSpace(lexer.Previous) &&
!lexer.IsSpecialSymbol(lexer.Previous, DelimiterType.End))
{
return false;
}
bool matchedNumber = false;
while (!lexer.EndOfStream)
{
if (IsNumberOrDecimalPoint(lexer.ReadNext()))
{
matchedNumber = true;
lexer.Commit();
}
else
{
lexer.Rollback();
break;
}
}
return matchedNumber;
}
private bool IsNumberOrDecimalPoint(char character) => char.IsNumber(character) || character == '.';
}
}

59
src/UI/CSConsole/Lexer/StringLexer.cs Normal file
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@ -0,0 +1,59 @@
using System.Collections.Generic;
using UnityEngine;
namespace UnityExplorer.UI.CSharpConsole.Lexers
{
public class StringLexer : Lexer
{
protected override Color HighlightColor => new Color(0.79f, 0.52f, 0.32f, 1.0f);
public override IEnumerable<char> Delimiters => new[] { '"' };
public override bool TryMatchCurrent(LexerBuilder lexer)
{
if (lexer.Current != '"')
return false;
if (lexer.Previous == '@')
{
// verbatim string, continue until un-escaped quote.
while (!lexer.EndOfInput)
{
lexer.Commit();
if (lexer.PeekNext() == '"')
{
lexer.Commit();
// possibly the end, check for escaped quotes.
// commit the character and flip the escape bool for each quote.
bool escaped = false;
while (lexer.PeekNext() == '"')
{
lexer.Commit();
escaped = !escaped;
}
// if the last quote wasnt escaped, that was the end of the string.
if (!escaped)
break;
}
}
}
else
{
// normal string
// continue until a quote which is not escaped, or end of input
while (!lexer.EndOfInput)
{
lexer.Commit();
if (lexer.PeekNext() == '"' && lexer.Previous != '\\')
{
lexer.Commit();
break;
}
}
}
return true;
}
}
}

26
src/UI/CSConsole/Lexer/StringMatch.cs
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@ -1,26 +0,0 @@
using System.Collections.Generic;
using UnityEngine;
namespace UnityExplorer.UI.CSharpConsole.Lexer
{
public class StringMatch : Matcher
{
public override Color HighlightColor => new Color(0.79f, 0.52f, 0.32f, 1.0f);
public override IEnumerable<char> StartChars => new[] { '"' };
public override IEnumerable<char> EndChars => new[] { '"' };
public override bool IsImplicitMatch(CSLexer lexer)
{
if (lexer.ReadNext() == '"')
{
while (!IsClosingQuoteOrEndFile(lexer, lexer.ReadNext())) { }
return true;
}
return false;
}
private bool IsClosingQuoteOrEndFile(CSLexer lexer, char character) => lexer.EndOfStream || character == '"';
}
}

52
src/UI/CSConsole/Lexer/SymbolLexer.cs Normal file
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@ -0,0 +1,52 @@
using System.Collections.Generic;
using System.Linq;
using System.Text;
using UnityEngine;
namespace UnityExplorer.UI.CSharpConsole.Lexers
{
public class SymbolLexer : Lexer
{
protected override Color HighlightColor => Color.white;
// all symbols are delimiters
public override IEnumerable<char> Delimiters => uniqueSymbols;
// all symbol combinations are made of valid individual symbols.
private readonly HashSet<char> uniqueSymbols = new HashSet<char>
{
'[', ']', '{', '}', '(', ')', ',', '.', ';', ':',
'+', '-', '*', '/', '%', '&', '|', '^', '~', '=',
'<', '>', '?', '!', '@'
};
// // actual valid symbol combinations
// private readonly HashSet<string> actualSymbols = new HashSet<string>
// {
//"[", "]", "(", ")", "{", "}", ".", ",", ";", ":", "+", "-", "*", "/", "%", "&", "|", "^", "~", "=",
//"<", ">", "++", "--", "&&", "||", "<<", ">>", "==", "!=", "<=", ">=", "+=", "-=", "*=", "/=", "%=",
//"&=", "|=", "^=", "<<=", ">>=", "->", "!", "?", "??", "@", "=>",
// };
public override bool TryMatchCurrent(LexerBuilder lexer)
{
// previous character must be delimiter, whitespace, or alphanumeric.
if (!lexer.IsDelimiter(lexer.Previous, true, true))
return false;
if (uniqueSymbols.Contains(lexer.Current))
{
do
{
lexer.Commit();
lexer.PeekNext();
}
while (uniqueSymbols.Contains(lexer.Current));
return true;
}
return false;
}
}
}

98
src/UI/CSConsole/Lexer/SymbolMatch.cs
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@ -1,98 +0,0 @@
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
namespace UnityExplorer.UI.CSharpConsole.Lexer
{
public class SymbolMatch : Matcher
{
public override Color HighlightColor => new Color(0.58f, 0.47f, 0.37f, 1.0f);
private readonly string[] symbols = new[]
{
"[", "]", "(", ")", ".", "?", ":", "+", "-", "*", "/", "%", "&", "|", "^", "~", "=", "<", ">",
"++", "--", "&&", "||", "<<", ">>", "==", "!=", "<=", ">=", "+=", "-=", "*=", "/=", "%=", "&=",
"|=", "^=", "<<=", ">>=", "->", "??", "=>",
};
private static readonly List<string> shortlist = new List<string>();
private static readonly Stack<string> removeList = new Stack<string>();
public override IEnumerable<char> StartChars => symbols.Select(s => s[0]);
public override IEnumerable<char> EndChars => symbols.Select(s => s[0]);
public override bool IsImplicitMatch(CSLexer lexer)
{
if (lexer == null)
return false;
if (!char.IsWhiteSpace(lexer.Previous) &&
!char.IsLetter(lexer.Previous) &&
!char.IsDigit(lexer.Previous) &&
!lexer.IsSpecialSymbol(lexer.Previous, DelimiterType.End))
{
return false;
}
shortlist.Clear();
int currentIndex = 0;
char currentChar = lexer.ReadNext();
for (int i = symbols.Length - 1; i >= 0; i--)
{
if (symbols[i][0] == currentChar)
shortlist.Add(symbols[i]);
}
if (shortlist.Count == 0)
return false;
do
{
if (lexer.EndOfStream)
{
RemoveLongStrings(currentIndex + 1);
break;
}
currentChar = lexer.ReadNext();
currentIndex++;
if (char.IsWhiteSpace(currentChar) ||
char.IsLetter(currentChar) ||
char.IsDigit(currentChar) ||
lexer.IsSpecialSymbol(currentChar, DelimiterType.Start))
{
RemoveLongStrings(currentIndex);
lexer.Rollback(1);
break;
}
foreach (string symbol in shortlist)
{
if (currentIndex >= symbol.Length || symbol[currentIndex] != currentChar)
removeList.Push(symbol);
}
while (removeList.Count > 0)
shortlist.Remove(removeList.Pop());
}
while (shortlist.Count > 0);
return shortlist.Count > 0;
}
private void RemoveLongStrings(int length)
{
foreach (string keyword in shortlist)
{
if (keyword.Length > length)
removeList.Push(keyword);
}
while (removeList.Count > 0)
shortlist.Remove(removeList.Pop());
}
}
}

347
src/UI/CSConsole/LexerBuilder.cs Normal file
View File

@ -0,0 +1,347 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using UnityEngine;
using UnityEngine.UI;
using UnityExplorer.UI.CSharpConsole.Lexers;
namespace UnityExplorer.UI.CSharpConsole
{
public struct MatchInfo
{
public int startIndex;
public int endIndex;
public string htmlColorTag;
}
public class LexerBuilder
{
// Initialization and core
public const char WHITESPACE = ' ';
public const char INDENT_OPEN = '{';
public const char INDENT_CLOSE = '}';
private readonly Lexer[] lexers;
private readonly HashSet<char> delimiters = new HashSet<char>();
public LexerBuilder()
{
lexers = new Lexer[]
{
new CommentLexer(),
new SymbolLexer(),
new StringLexer(),
new NumberLexer(),
new KeywordLexer(),
};
foreach (var matcher in lexers)
{
foreach (char c in matcher.Delimiters)
{
if (!delimiters.Contains(c))
delimiters.Add(c);
}
}
}
public bool IsDelimiter(char character, bool orWhitespace = false, bool orLetterOrDigit = false)
{
return delimiters.Contains(character)
|| (orWhitespace && char.IsWhiteSpace(character))
|| (orLetterOrDigit && char.IsLetterOrDigit(character));
}
// Lexer enumeration
public string InputString { get; private set; }
public int Length => InputString.Length;
public int LastCommittedIndex { get; private set; }
public int LookaheadIndex { get; private set; }
public char Current => !EndOfInput ? InputString[LookaheadIndex] : WHITESPACE;
public char Previous => LookaheadIndex >= 1 ? InputString[LookaheadIndex - 1] : WHITESPACE;
public bool EndOfInput => LookaheadIndex >= Length;
public bool EndOrNewLine => EndOfInput || Current == '\n' || Current == '\r';
public string SyntaxHighlight(string input)
{
var sb = new StringBuilder();
int lastUnhighlighted = 0;
// TODO auto indent as part of this parse
foreach (var match in GetMatches(input))
{
// append non-highlighted text between last match and this
for (int i = lastUnhighlighted; i < match.startIndex; i++)
sb.Append(input[i]);
// append the highlighted match
sb.Append(match.htmlColorTag);
for (int i = match.startIndex; i <= match.endIndex && i < input.Length; i++)
sb.Append(input[i]);
sb.Append(SignatureHighlighter.CLOSE_COLOR);
// update the last unhighlighted start index
lastUnhighlighted = match.endIndex + 1;
}
return sb.ToString();
}
public IEnumerable<MatchInfo> GetMatches(string input)
{
if (string.IsNullOrEmpty(input))
yield break;
InputString = input;
LastCommittedIndex = -1;
Rollback();
while (!EndOfInput)
{
SkipWhitespace();
bool anyMatch = false;
int startIndex = LastCommittedIndex + 1;
foreach (var lexer in lexers)
{
if (lexer.TryMatchCurrent(this))
{
anyMatch = true;
yield return new MatchInfo
{
startIndex = startIndex,
endIndex = LastCommittedIndex,
htmlColorTag = lexer.ColorTag,
};
break;
}
else
Rollback();
}
if (!anyMatch)
{
LookaheadIndex = LastCommittedIndex + 1;
Commit();
}
}
}
public char PeekNext(int amount = 1)
{
LookaheadIndex += amount;
return Current;
}
public void Commit()
{
LastCommittedIndex = Math.Min(Length - 1, LookaheadIndex);
}
public void Rollback()
{
LookaheadIndex = LastCommittedIndex + 1;
}
public void RollbackBy(int amount)
{
LookaheadIndex = Math.Max(LastCommittedIndex + 1, LookaheadIndex - amount);
}
private void SkipWhitespace()
{
// peek and commit as long as there is whitespace
while (!EndOfInput && char.IsWhiteSpace(Current))
{
Commit();
PeekNext();
}
// revert the last PeekNext which would have returned false
Rollback();
}
#region AUTO INDENT TODO
// Auto-indenting
//public int GetIndentLevel(string input, int toIndex)
//{
// bool stringState = false;
// int indent = 0;
//
// for (int i = 0; i < toIndex && i < input.Length; i++)
// {
// char character = input[i];
//
// if (character == '"')
// stringState = !stringState;
// else if (!stringState && character == INDENT_OPEN)
// indent++;
// else if (!stringState && character == INDENT_CLOSE)
// indent--;
// }
//
// if (indent < 0)
// indent = 0;
//
// return indent;
//}
//// TODO not quite correct, but almost there.
//
//public string AutoIndentOnEnter(string input, ref int caretPos)
//{
// var sb = new StringBuilder(input);
//
// bool inString = false;
// bool inChar = false;
// int currentIndent = 0;
// int curLineIndent = 0;
// bool prevWasNewLine = true;
//
// // process before caret position
// for (int i = 0; i < caretPos; i++)
// {
// char c = sb[i];
//
// ExplorerCore.Log(i + ": " + c);
//
// // update string/char state
// if (!inChar && c == '\"')
// inString = !inString;
// else if (!inString && c == '\'')
// inChar = !inChar;
//
// // continue if inside string or char
// if (inString || inChar)
// continue;
//
// // check for new line
// if (c == '\n')
// {
// ExplorerCore.Log("new line, resetting line counts");
// curLineIndent = 0;
// prevWasNewLine = true;
// }
// // check for indent
// else if (c == '\t' && prevWasNewLine)
// {
// ExplorerCore.Log("its a tab");
// if (curLineIndent > currentIndent)
// {
// ExplorerCore.Log("too many tabs, removing");
// // already reached the indent we should have
// sb.Remove(i, 1);
// i--;
// caretPos--;
// curLineIndent--;
// }
// else
// curLineIndent++;
// }
// // remove spaces on new lines
// else if (c == ' ' && prevWasNewLine)
// {
// ExplorerCore.Log("removing newline-space");
// sb.Remove(i, 1);
// i--;
// caretPos--;
// }
// else
// {
// if (c == INDENT_CLOSE)
// currentIndent--;
//
// if (prevWasNewLine && curLineIndent < currentIndent)
// {
// ExplorerCore.Log("line is not indented enough");
// // line is not indented enough
// int diff = currentIndent - curLineIndent;
// sb.Insert(i, new string('\t', diff));
// caretPos += diff;
// i += diff;
// }
//
// // check for brackets
// if ((c == INDENT_CLOSE || c == INDENT_OPEN) && !prevWasNewLine)
// {
// ExplorerCore.Log("bracket needs new line");
//
// // need to put it on a new line
// sb.Insert(i, $"\n{new string('\t', currentIndent)}");
// caretPos += 1 + currentIndent;
// i += 1 + currentIndent;
// }
//
// if (c == INDENT_OPEN)
// currentIndent++;
//
// prevWasNewLine = false;
// }
// }
//
// // todo put caret on new line after previous bracket if needed
// // indent caret to current indent
//
// // process after caret position, make sure there are equal opened/closed brackets
// ExplorerCore.Log("-- after caret --");
// for (int i = caretPos; i < sb.Length; i++)
// {
// char c = sb[i];
// ExplorerCore.Log(i + ": " + c);
//
// // update string/char state
// if (!inChar && c == '\"')
// inString = !inString;
// else if (!inString && c == '\'')
// inChar = !inChar;
//
// if (inString || inChar)
// continue;
//
// if (c == INDENT_OPEN)
// currentIndent++;
// else if (c == INDENT_CLOSE)
// currentIndent--;
// }
//
// if (currentIndent > 0)
// {
// ExplorerCore.Log("there are not enough closing brackets, curIndent is " + currentIndent);
// // There are not enough close brackets
//
// // TODO this should append in reverse indent order (small indents inserted first, then biggest).
// while (currentIndent > 0)
// {
// ExplorerCore.Log("Inserting closing bracket with " + currentIndent + " indent");
// // append the indented '}' on a new line
// sb.Insert(caretPos, $"\n{new string('\t', currentIndent - 1)}}}");
//
// currentIndent--;
// }
//
// }
// //else if (currentIndent < 0)
// //{
// // // There are too many close brackets
// //
// // // todo?
// //}
//
// return sb.ToString();
//}
#endregion
}
}

3
src/UI/Panels/CSConsolePanel.cs
View File

@ -159,7 +159,7 @@ namespace UnityExplorer.UI.Panels
InputText = InputField.InputField.textComponent; InputText = InputField.InputField.textComponent;
InputText.supportRichText = false; InputText.supportRichText = false;
InputText.color = new Color(1, 1, 1, 0.5f); InputText.color = new Color(1, 1, 1, 0.65f);
var mainTextObj = InputText.gameObject; var mainTextObj = InputText.gameObject;
var highlightTextObj = UIFactory.CreateUIObject("HighlightText", mainTextObj.gameObject); var highlightTextObj = UIFactory.CreateUIObject("HighlightText", mainTextObj.gameObject);
@ -171,6 +171,7 @@ namespace UnityExplorer.UI.Panels
highlightTextRect.offsetMax = new Vector2(14, 0); highlightTextRect.offsetMax = new Vector2(14, 0);
HighlightText = highlightTextObj.AddComponent<Text>(); HighlightText = highlightTextObj.AddComponent<Text>();
HighlightText.color = Color.clear;
HighlightText.supportRichText = true; HighlightText.supportRichText = true;
HighlightText.fontSize = fontSize; HighlightText.fontSize = fontSize;

2
src/UI/UIManager.cs
View File

@ -119,9 +119,7 @@ namespace UnityExplorer.UI
UIPanel.UpdateFocus(); UIPanel.UpdateFocus();
PanelDragger.UpdateInstances(); PanelDragger.UpdateInstances();
UIBehaviourModel.UpdateInstances(); UIBehaviourModel.UpdateInstances();
AutoCompleter.Update();
} }
public static void TogglePanel(Panels panel) public static void TogglePanel(Panels panel)

14
src/UnityExplorer.csproj
View File

@ -219,13 +219,13 @@
</ItemGroup> </ItemGroup>
<ItemGroup> <ItemGroup>
<Compile Include="Core\Config\InternalConfigHandler.cs" /> <Compile Include="Core\Config\InternalConfigHandler.cs" />
<Compile Include="UI\CSConsole\CSLexer.cs" /> <Compile Include="UI\CSConsole\LexerBuilder.cs" />
<Compile Include="UI\CSConsole\Lexer\CommentMatch.cs" /> <Compile Include="UI\CSConsole\Lexer\CommentLexer.cs" />
<Compile Include="UI\CSConsole\Lexer\KeywordMatch.cs" /> <Compile Include="UI\CSConsole\Lexer\KeywordLexer.cs" />
<Compile Include="UI\CSConsole\Lexer\Matcher.cs" /> <Compile Include="UI\CSConsole\Lexer\Lexer.cs" />
<Compile Include="UI\CSConsole\Lexer\NumberMatch.cs" /> <Compile Include="UI\CSConsole\Lexer\NumberLexer.cs" />
<Compile Include="UI\CSConsole\Lexer\StringMatch.cs" /> <Compile Include="UI\CSConsole\Lexer\StringLexer.cs" />
<Compile Include="UI\CSConsole\Lexer\SymbolMatch.cs" /> <Compile Include="UI\CSConsole\Lexer\SymbolLexer.cs" />
<Compile Include="UI\CSConsole\ScriptEvaluator.cs" /> <Compile Include="UI\CSConsole\ScriptEvaluator.cs" />
<Compile Include="UI\CSConsole\ScriptInteraction.cs" /> <Compile Include="UI\CSConsole\ScriptInteraction.cs" />
<Compile Include="Core\ExplorerBehaviour.cs" /> <Compile Include="Core\ExplorerBehaviour.cs" />