egametang/ET · error · Exception

condition token error at

Error message

condition token error at {this.index}: {c}

What it means

Thrown by ConditionExprLexer.ReadOperator in its default case when the current character is not one of the recognized operator/punctuation chars (>, <, =, !, &, |, (, ), :, ,). Any other glyph the lexer cannot tokenize aborts tokenization with the offending index and character.

Solutions

1. Remove or replace the unsupported character in the condition expression.
2. Check for full-width/CJK punctuation and replace with ASCII equivalents.
3. Remove trailing semicolons or stray symbols copied from documents.
4. Validate expression strings with the lexer at config-import time to surface the bad index/char early.

Example fix

// before (expression cell)
//   HP >= 50;
// after
//   HP >= 50

// At config import, tokenize every expression and surface lexer errors with index/char:
try { new ConditionExprLexer(expr).Tokenize(); }
catch (Exception e) { Log.Error($"bad expr '{expr}': {e.Message}"); }

// Reject expressions containing characters outside the allowed set before runtime.
static readonly HashSet<char> Allowed = new("><=!&|():,");
static bool HasOnlyAllowedChars(string expr, out int badIdx, out char badChar)

When it happens

Trigger: A condition expression contains an unsupported character such as @, #, $, %, ;, +, -, *, /, [, ], or a non-ASCII symbol. For example 'HP >= 50;' (trailing semicolon) or 'A & B' using a single ampersand where '&&' is required (single & is handled, but stray symbols are not).

Common situations: Copy-paste from a rich-text/Excel source that inserted special characters; a trailing semicolon or stray whitespace-like glyph; an attempt to use arithmetic (+, -, *, /) which the grammar does not support; a full-width (CJK) punctuation character.

Related errors

• condition number parse error
• condition compare op expected, actual
• condition variable not registered
• condition variable reference invalid
• condition error code out of range

AI-assisted analysis of egametang/ET@5cab01f7a8 (2026-08-13). Data as JSON: /api/errors/8ace598b56008874. Report an issue: GitHub.

Appendix: source

Thrown at Packages/cn.etetet.conditionexpr/Scripts/Model/Share/ConditionExprLexer.cs:117

                    return;
                case '(':
                    this.tokens.Add(new ConditionToken(ConditionTokenType.LeftParen, "(", 0));
                    ++this.index;
                    return;
                case ')':
                    this.tokens.Add(new ConditionToken(ConditionTokenType.RightParen, ")", 0));
                    ++this.index;
                    return;
                case ':':
                    this.tokens.Add(new ConditionToken(ConditionTokenType.Colon, ":", 0));
                    ++this.index;
                    return;
                case ',':
                    this.tokens.Add(new ConditionToken(ConditionTokenType.Comma, ",", 0));
                    ++this.index;
                    return;
                default:
                    throw new Exception($"condition token error at {this.index}: {c}");
            }
        }

        private void AddIfNext(char next, ConditionTokenType matchType, ConditionTokenType singleType)
        {
            char c = this.expr[this.index];
            if (this.index + 1 < this.expr.Length && this.expr[this.index + 1] == next)
            {
                this.tokens.Add(new ConditionToken(matchType, $"{c}{next}", 0));
                this.index += 2;
                return;
            }

            this.tokens.Add(new ConditionToken(singleType, c.ToString(), 0));
            ++this.index;
        }

        private void ExpectNext(char next, ConditionTokenType tokenType)

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