Exception in thread "main" arb.exceptions.ExpressionCompilerException:

expected closing parenthesis, instead got ∏ at position 27 in expression 'n➔when(n=0,1,else,x*F(n-1)*(∏α₍ₖ₎{k=1…p}/∏β₍ₖ₎{k=1…q}))' at arb4j/arb.expressions.Expression.parse(Expression.java:695) at arb4j/arb.expressions.Expression.parseFinally(Expression.java:773) at arb4j/arb.expressions.Expression.parseMultiplicationAndDivisionOperations(Expression.java:884) at arb4j/arb.expressions.Expression.parseSecond(Expression.java:873) at arb4j/arb.expressions.Expression.parseFirst(Expression.java:734) at arb4j/arb.expressions.nodes.unary.When.parseWhenCondition(When.java:186) at arb4j/arb.expressions.nodes.unary.When.parse(When.java:146) at arb4j/arb.expressions.Expression.resolveFunctionInvocationOrVariableReference(Expression.java:948) at arb4j/arb.expressions.Expression.parse(Expression.java:707) at arb4j/arb.expressions.Expression.parseFinally(Expression.java:773) at arb4j/arb.expressions.Expression.parseSecond(Expression.java:871) at arb4j/arb.expressions.Expression.parseFirst(Expression.java:734) at arb4j/arb.expressions.Expression.parseRootNode(Expression.java:863) at arb4j/arb.expressions.Expression.generateEvaluationMethod(Expression.java:457) at arb4j/arb.expressions.Expression.generate(Expression.java:362) at arb4j/arb.expressions.Compiler.compile(Compiler.java:146) at arb4j/arb.expressions.Compiler.compile(Compiler.java:115) at arb4j/arb.expressions.Expression.instantiate(Expression.java:118) at arb4j/arb.functions.Function.express(Function.java:145) at arb4j/arb.functions.real.HypergeometricFunctionSequence.<init>(HypergeometricFunctionSequence.java:47) at arb4j/arb.functions.real.HypergeometricFunctionSequence.main(HypergeometricFunctionSequence.java:20)
crowlogic · Jan 27, 2024 · e506f4e · e506f4e
1 parent d027fbd
commit e506f4e
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Showing 2 changed files with 3 additions and 3 deletions.
diff --git a/src/main/java/arb/expressions/Expression.java b/src/main/java/arb/expressions/Expression.java
@@ -692,8 +692,8 @@ public Node<D, R, F> parse(int depth) throws ExpressionCompilerException
       node = parseFirst(depth + 1);
       if (!parse(depth + 1, ')'))
       {
-        throw new ExpressionCompilerException(format("expected closing parenthesis at: depth=%d startPos=%s, position=%s in "
-                      + "expression '%s' of length %d", depth, startPos, position, expression, expression.length()));
+        throw new ExpressionCompilerException(format("expected closing parenthesis, instead got %c at position %s in "
+                      + "expression '%s'", ch, startPos, expression));
       }
 
     }

diff --git a/src/main/java/arb/functions/real/HypergeometricFunctionSequence.java b/src/main/java/arb/functions/real/HypergeometricFunctionSequence.java
@@ -38,7 +38,7 @@ public static void main(String... args)
 
   public final Function<Integer, RealPolynomial> F;
 
-  public static final String                     Fdef = "n➔when(n=0,1,else,x*F(n-1)*(∏α₍ₖ₎(k=1…p)/∏β₍ₖ₎(k=1…q))";
+  public static final String                     Fdef = "n➔when(n=0,1,else,x*F(n-1)*(∏α₍ₖ₎{k=1…p}/∏β₍ₖ₎{k=1…q}))";
 
   public HypergeometricFunctionSequence(int p, int q)
   {