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bug: Parse error with macro-generated enum values #309
Description
Did you check existing issues?
- I have read all the tree-sitter docs if it relates to using the parser
- I have searched the existing issues of tree-sitter-cpp
Tree-Sitter CLI Version, if relevant (output of tree-sitter --version)
tree-sitter 0.25.3 (2a835ee029dca1c325e6f1c01dbce40396f6123e)
Describe the bug
When parsing code that defines an enum using macro expansion, the parse tree incorrectly reports an ERROR node.
For example, given the following snippet:
#define ERROR_LIST(APPLY) \
APPLY(ERR_OK, 0, "Success") \
APPLY(ERR_FAIL, 1, "Failure")
enum Error {
#define DEFINE(NAME, VALUE, DESC) NAME = VALUE,
ERROR_LIST(DEFINE)
#undef DEFINE
};The following error appears in the parse tree: (ERROR [5, 2] - [6, 24].
Steps To Reproduce/Bad Parse Tree
- Write the code above in a C++ file.
- Run
tree-sitter parseon the file. - Observe the obtained parse tree:
(translation_unit [0, 0] - [10, 0]
(preproc_function_def [0, 0] - [3, 0]
name: (identifier [0, 8] - [0, 18])
parameters: (preproc_params [0, 18] - [0, 25]
(identifier [0, 19] - [0, 24]))
value: (preproc_arg [1, 4] - [2, 33]))
(enum_specifier [4, 0] - [8, 1]
name: (type_identifier [4, 5] - [4, 10])
body: (enumerator_list [4, 11] - [8, 1]
(ERROR [5, 2] - [6, 24]
(preproc_call [5, 2] - [6, 0]
directive: (preproc_directive [5, 2] - [5, 9])
argument: (preproc_arg [5, 10] - [5, 49]))
(identifier [6, 6] - [6, 16])
(identifier [6, 17] - [6, 23]))
(preproc_call [7, 2] - [8, 0]
directive: (preproc_directive [7, 2] - [7, 8])
argument: (preproc_arg [7, 9] - [7, 15])))))
Expected Behavior/Parse Tree
The parse tree should not have errors.
Repro
#define ERROR_LIST(APPLY) \
APPLY(ERR_OK, 0, "Success") \
APPLY(ERR_FAIL, 1, "Failure")
enum Error {
#define DEFINE(NAME, VALUE, DESC) NAME = VALUE,
ERROR_LIST(DEFINE)
#undef DEFINE
};
Activity