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https://github.com/QL-Win/QuickLook.git
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Add .jsonl syntax highlighting support to TextViewer (#1906)
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@@ -163,9 +163,9 @@ public partial class TextViewerPanel : TextEditor, IDisposable
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// RTL: Ctrl + RShift
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// LTR: Ctrl + LShift
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if (Keyboard.IsKeyDown(Key.RightShift))
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FlowDirection = System.Windows.FlowDirection.RightToLeft;
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FlowDirection = FlowDirection.RightToLeft;
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else if (Keyboard.IsKeyDown(Key.LeftShift))
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FlowDirection = System.Windows.FlowDirection.LeftToRight;
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FlowDirection = FlowDirection.LeftToRight;
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}
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else if (Keyboard.IsKeyDown(Key.LeftAlt) || Keyboard.IsKeyDown(Key.RightAlt))
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{
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+47
@@ -0,0 +1,47 @@
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// Copyright © 2017-2026 QL-Win Contributors
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//
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// This file is part of QuickLook program.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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using ICSharpCode.AvalonEdit.Highlighting;
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using ICSharpCode.AvalonEdit.Rendering;
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using QuickLook.Plugin.TextViewer.Themes.HighlightingDefinitions.Light;
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using System.Collections.Generic;
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namespace QuickLook.Plugin.TextViewer.Themes.HighlightingDefinitions.Dark;
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public class JSONLHighlightingDefinition : DarkHighlightingDefinition
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{
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public override string Name => "JSONL";
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public override string Extension => ".jsonl";
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public override HighlightingRuleSet MainRuleSet => new();
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public override HighlightingColor GetNamedColor(string name) => null;
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public override IEnumerable<HighlightingColor> NamedHighlightingColors => [];
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public override DocumentColorizingTransformer[] LineTransformers { get; } =
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[
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new JsonLineHighlighter(
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keyColor: "#9CDCF0", // field names (VSCode default)
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stringColor: "#CE9178", // string values (VSCode default)
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numberColor: "#B5CEA8", // numbers (VSCode default)
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boolNullColor:"#569CD6", // true/false/null (VSCode default)
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braceColor: "#DA66BE", // { }
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bracketColor: "#FFD710") // [ ]
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];
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}
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+211
@@ -0,0 +1,211 @@
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// Copyright © 2017-2026 QL-Win Contributors
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//
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// This file is part of QuickLook program.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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using ICSharpCode.AvalonEdit.Document;
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using ICSharpCode.AvalonEdit.Highlighting;
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using ICSharpCode.AvalonEdit.Rendering;
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using System.Collections.Generic;
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namespace QuickLook.Plugin.TextViewer.Themes.HighlightingDefinitions.Light;
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public class JSONLHighlightingDefinition : LightHighlightingDefinition
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{
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public override string Name => "JSONL";
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public override string Extension => ".jsonl";
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public override HighlightingRuleSet MainRuleSet => new();
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public override HighlightingColor GetNamedColor(string name) => null;
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public override IEnumerable<HighlightingColor> NamedHighlightingColors => [];
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public override DocumentColorizingTransformer[] LineTransformers { get; } =
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[
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new JsonLineHighlighter(
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keyColor: "#0451A5", // field names (VSCode light default)
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stringColor: "#A31515", // string values (VSCode light default)
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numberColor: "#098658", // numbers (VSCode light default)
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boolNullColor:"#0000FF", // true/false/null (VSCode light default)
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braceColor: "#800000", // { }
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bracketColor: "#0451A5") // [ ]
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];
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}
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/// <summary>
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/// Per-line JSON tokenizer for JSONL (JSON Lines) files.
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/// Each call to ColorizeLine processes one independent JSON object/array.
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/// </summary>
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public class JsonLineHighlighter(
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string keyColor,
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string stringColor,
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string numberColor,
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string boolNullColor,
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string braceColor,
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string bracketColor) : DocumentColorizingTransformer
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{
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protected override void ColorizeLine(DocumentLine line)
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{
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var text = CurrentContext.Document.GetText(line);
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if (string.IsNullOrWhiteSpace(text))
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return;
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ColorizeJsonLine(line, text);
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}
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private void ColorizeJsonLine(DocumentLine line, string text)
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{
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// Stack: true = currently inside an object (next unquoted string is a key),
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// false = currently inside an array (all strings are values).
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var contextStack = new Stack<bool>();
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bool expectKey = false;
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int i = 0;
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while (i < text.Length)
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{
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char c = text[i];
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if (char.IsWhiteSpace(c)) { i++; continue; }
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switch (c)
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{
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case '{':
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Colorize(line, i, i + 1, braceColor);
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contextStack.Push(true);
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expectKey = true;
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i++;
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break;
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case '}':
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Colorize(line, i, i + 1, braceColor);
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if (contextStack.Count > 0) contextStack.Pop();
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expectKey = false;
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i++;
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break;
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case '[':
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Colorize(line, i, i + 1, bracketColor);
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contextStack.Push(false);
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expectKey = false;
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i++;
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break;
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case ']':
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Colorize(line, i, i + 1, bracketColor);
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if (contextStack.Count > 0) contextStack.Pop();
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expectKey = false;
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i++;
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break;
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case ':':
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// Colon separates key from value; next token is a value.
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expectKey = false;
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i++;
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break;
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case ',':
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// In object context the next string is a key; in array it is a value.
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expectKey = contextStack.Count > 0 && contextStack.Peek();
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i++;
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break;
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case '"':
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case '\'':
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i = TokenizeString(line, text, i, c, expectKey);
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if (expectKey)
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expectKey = false; // key consumed, colon follows next
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break;
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default:
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if (c == '-' || char.IsDigit(c))
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{
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i = TokenizeNumber(line, text, i);
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expectKey = false;
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}
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else if (char.IsLetter(c))
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{
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i = TokenizeKeyword(line, text, i);
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expectKey = false;
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}
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else
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{
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i++;
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}
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break;
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}
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}
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}
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private int TokenizeString(DocumentLine line, string text, int start, char quote, bool isKey)
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{
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int i = start + 1; // skip opening quote
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while (i < text.Length)
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{
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if (text[i] == '\\')
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{
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i += 2; // skip escape sequence
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continue;
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}
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if (text[i] == quote)
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{
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i++; // include closing quote
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break;
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}
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i++;
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}
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Colorize(line, start, i, isKey ? keyColor : stringColor);
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return i;
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}
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private int TokenizeNumber(DocumentLine line, string text, int start)
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{
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int i = start;
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if (i < text.Length && text[i] == '-') i++; // optional leading minus
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while (i < text.Length && char.IsDigit(text[i])) i++;
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if (i < text.Length && text[i] == '.')
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{
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i++;
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while (i < text.Length && char.IsDigit(text[i])) i++;
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}
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if (i < text.Length && (text[i] == 'e' || text[i] == 'E'))
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{
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i++;
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if (i < text.Length && (text[i] == '+' || text[i] == '-')) i++;
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while (i < text.Length && char.IsDigit(text[i])) i++;
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}
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Colorize(line, start, i, numberColor);
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return i;
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}
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private int TokenizeKeyword(DocumentLine line, string text, int start)
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{
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int i = start;
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while (i < text.Length && char.IsLetter(text[i])) i++;
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string keyword = text.Substring(start, i - start);
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if (keyword is "true" or "false" or "null")
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Colorize(line, start, i, boolNullColor);
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return i;
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}
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private void Colorize(DocumentLine line, int from, int to, string hexColor)
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{
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ChangeLinePart(line.Offset + from, line.Offset + to, el =>
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{
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el.TextRunProperties.SetForegroundBrush(hexColor.ToBrush());
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});
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}
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}
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