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When the parser does a second pass to check for errors, these rules can have some small side-effects as they may advance the parser more than the point reached in the first pass. This can cause the tokenizer to ask for extra tokens in interactive mode causing the tokenizer to show the prompt instead of failing instantly. To avoid this, add a new mode to the tokenizer that is activated in the second pass and deactivates asking for new tokens when the interactive line is finished. As the parsing should have reached the last line in the first pass, the second pass should not need to ask for more tokens.
37 lines
1.5 KiB
C
37 lines
1.5 KiB
C
#ifndef Py_ERRCODE_H
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#define Py_ERRCODE_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Error codes passed around between file input, tokenizer, parser and
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interpreter. This is necessary so we can turn them into Python
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exceptions at a higher level. Note that some errors have a
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slightly different meaning when passed from the tokenizer to the
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parser than when passed from the parser to the interpreter; e.g.
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the parser only returns E_EOF when it hits EOF immediately, and it
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never returns E_OK. */
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#define E_OK 10 /* No error */
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#define E_EOF 11 /* End Of File */
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#define E_INTR 12 /* Interrupted */
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#define E_TOKEN 13 /* Bad token */
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#define E_SYNTAX 14 /* Syntax error */
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#define E_NOMEM 15 /* Ran out of memory */
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#define E_DONE 16 /* Parsing complete */
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#define E_ERROR 17 /* Execution error */
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#define E_TABSPACE 18 /* Inconsistent mixing of tabs and spaces */
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#define E_OVERFLOW 19 /* Node had too many children */
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#define E_TOODEEP 20 /* Too many indentation levels */
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#define E_DEDENT 21 /* No matching outer block for dedent */
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#define E_DECODE 22 /* Error in decoding into Unicode */
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#define E_LINECONT 25 /* Unexpected characters after a line continuation */
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#define E_BADSINGLE 27 /* Ill-formed single statement input */
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#define E_INTERACT_STOP 28 /* Interactive mode stopped tokenization */
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#ifdef __cplusplus
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}
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#endif
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#endif /* !Py_ERRCODE_H */
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