errors
¶
This module contains the exceptions raised by the package.
Exceptions¶
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exception
DatetimeSyntaxError
(message, value)[source]¶ Bases:
rule_engine.errors.SyntaxError
An error raised for issues regarding the use of improperly formatted datetime expressions.
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__init__
(message, value)[source]¶ - Parameters
message (str) – A text description of what error occurred.
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value
¶ The datetime value which contains the syntax error which caused this exception to be raised.
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exception
EngineError
(message='')[source]¶ Bases:
Exception
The base exception class from which other exceptions within this package inherit.
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message
¶ The message describing the error that occurred.
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exception
EvaluationError
(message='')[source]¶ Bases:
rule_engine.errors.EngineError
An error raised for issues which occur while the rule is being evaluated. This can occur at parse time while AST nodes are being evaluated during the reduction phase.
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exception
RegexSyntaxError
(message, error)[source]¶ Bases:
rule_engine.errors.SyntaxError
An error raised for issues regarding the use of improper regular expression syntax.
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__init__
(message, error)[source]¶ - Parameters
message (str) – A text description of what error occurred.
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property
value
¶ The regular expression value which contains the syntax error which caused this exception to be raised.
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exception
RuleSyntaxError
(message, token=None)[source]¶ Bases:
rule_engine.errors.SyntaxError
An error raised for issues identified in while parsing the grammar of the rule text.
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__init__
(message, token=None)[source]¶ - Parameters
message (str) – A text description of what error occurred.
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token
¶ The PLY token (if available) which is related to the syntax error.
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exception
SymbolResolutionError
(symbol_name, symbol_scope=None)[source]¶ Bases:
rule_engine.errors.EvaluationError
An error raised when a symbol name is not able to be resolved to a value.
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symbol_name
¶ The name of the symbol that can not be resolved.
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symbol_scope
¶ The scope of where the symbol should be valid for resolution.
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exception
SymbolTypeError
(symbol_name, is_value, is_type, expected_type)[source]¶ Bases:
rule_engine.errors.EvaluationError
An error raised when a symbol with type information is resolved to a python value that is not of that type.
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__init__
(symbol_name, is_value, is_type, expected_type)[source]¶ - Parameters
message (str) – A text description of what error occurred.
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expected_type
¶ The
rule-engine type
that was expected for this symbol.
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is_type
¶ The
rule-engine type
of the incompatible symbol.
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is_value
¶ The native Python value of the incompatible symbol.
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symbol_name
¶ The name of the symbol that is of an incompatible type.
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exception
SyntaxError
(message='')[source]¶ Bases:
rule_engine.errors.EngineError
A base error for syntax related issues.