Errors
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Let's abandon the numbers and just create an Exception class inheritance tree, like Python has. It works.

Ratscript Error Codes

Error codes are organized numerically, to create ranges.

GENERAL | SPECIFIC | ERROR

2110
2: Math and Logic (General Category)
1: Non-Decimal Math Error (Specific Category)
01: Invalid Hexadecimal (Specific Error)

Compiler Errors (0xxx)

Code	Name	Info
0000	Unknown Error	WARNING: Don't use me.

Name Errors (00xx)

Code	Name	Info
0001	Reserved Name	Name is reserved keyword.
0002	Library Name Conflict	Name already exists in Ratscript common library.
0003	Name Conflict	Name already exists.
0004	Illegal Name	Cannot give literal as name (3, true, “Bob” vs. Bob)
0005	Invalid Name	Names may only contain alphanumeric and _.

Type Errors (01xx)

Code	Name	Info
0100	Type Error	Mismatched type.
0101	Cast Error	Cannot cast.
0102	Null Error	Null passed where value expected. No value defined in variable/constant.

Function Errors (03xx)

Code	Name	Info
0300	Function Call Error	General function call error.
0301	Missing Argument	One or more arguments are missing.
0302	Late Required Argument	Required arguments must precede optional arguments.

Access Errors (04xx)

Code	Name	Info
0400	Access Error	General access error.
0401	Out of Scope	Cannot access variable/function/constant out of scope.
0402	(?)
0403	Illegal Assignment	Attempting to write to a constant or literal.
0404	Reference Error	Variable/Constant/Function not found.

Syntax Errors (1xxx)

Expected Token (10xx)

Code	Name	Info
1000	Expected Token	General expected token error.
1001	Opening Bracket Expected	Missing
1002	Closing Bracket Expected	Missing ]
1003	Opening Parenthesis Expected	Missing (
1004	Closing Parenthesis Expected	Missing )
1005	Opening Brace Expected	Missing {
1006	Closing Brace Expected	Missing }
1007	Incomplete Comment	Expected “>” or “*” (lone leading >)
1008	Subordination Expected	Line should be subordinated (:)
1009	Implicit Variable Call	Expected @
1010	Missing Space	Expected space

Unexpected Token (11xx)

Code	Name	Info
1100	Unexpected Token	General unexpected token error.
1101	Incomplete statement	Improper …
1102	Assignment Unexpected	= instead of == (disallow assignment in eval)
1103	Wrong Language Error	Trailing ; (we're not in C!); Trailing \ (we're not in Python)
1104	Unexpected Subordination	Unexpected subordinator (:)

Expected Keyword (12xx)

Code	Name	Info
1200	Expected Keyword	General expected keyword error.
1201	Type Expected	No type given for MAKE.
1202	CASE Expected	No CASE given with SWITCH
1203	CATCH Expected	No CATCH given with TRY
1204	END Expected	No matching END statement.
1205	RETURN Expected	No return in function.

Unexpected Keyword (13xx)

Code	Name	Info
1300	Unexpected Keyword	General unexpected keyword error.
1301	Context Error	META keyword out of context.

Math and Logic Errors (2xxx)

Math Errors (20xx)

Code	Name	Info
2000	Math Error	General math error.
2001	Division Error	Cannot divide by 0.
2002	Root Error	Cannot take (even) root of negative number.
2003	Log Error	Cannot take log of 0 or negative number.
2004	Infinity Error	Solution is infinite.
2005	Invalid Operator	Operator invalid.; Operator does not exist.
2006	Invalid Operand	Cannot perform math on NaN.

Non-Decimal Math Error (21xx)

Code	Name	Info
2100	Non-Decimal Math Error	General non-decimal math error.
2101	Illegal Digit	Out-of-range digit for base.
2102	Invalid Hexadecimal	Decimal point in hexadecimal.

Loop Errors (22xx)

Code	Name	Info
2200	Infinite Loop Error	Infinite loop. (These should be interrupted when possible.)
2201	Missing Iterator Modifier	No increment command in WHILE or DO WHILE. (Infinite loop)
2202	Missing Loop Condition	Missing statement in WHILE or DO WHILE.
2203	Missing WHILE	No WHILE in DO WHILE.
2204	Incomplete FOR	Missing element in FOR header.

Logic Errors (23xx)

Code	Name	Info
2300	Logic Error	General logic error.
2322	Paradox Error	Contradictory statements. (Mainly novelty.)

Eval Errors (24xx)

Code	Name	Info
2400	Evaluation Error	General eval error.
2401	Incomplete Eval	Incomplete eval statement. (Operator leading/trailing)
2402	Invalid Type	Invalid type in eval statement.
2442	Question Error	Ask a bad question, expect a bad answer.

System Errors (3xxx)

Code	Name	Info
3000	System Error	General system error.
3001	Memory Allocation Error	Cannot allocate memory for variable.
3002	Underflow Error	Stack underflow.
3003	Overflow Error	Stack overflow.
3004	Not Found	File cannot be found.
3005	System Access Error	File cannot be accessed.; Process cannot be accessed.
3006	Segmentation Fault	Segmentation fault.
3007	Unexpected Termination	Process terminated unexpectedly.

Event Timeline

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