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fix(treesitter): show proper node name error messages

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**Problem:** Currently node names with non-alphanumeric, non
underscore/hyphen characters (only possible with anonymous nodes) are
not given a proper error message. See tree-sitter issue 3892 for more
details.

**Solution:** Apply a different scanning logic to anonymous nodes to
correctly identify the entire node name (i.e., up until the final double
quote)
This commit is contained in:
Riley Bruins
2024-11-08 11:42:09 -08:00
committed by Christian Clason
parent 37f665c504
commit 36990f324d
2 changed files with 36 additions and 3 deletions
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19
src/nvim/lua/treesitter.c
View File

@ -1528,10 +1528,25 @@ static void query_err_string(const char *src, int error_offset, TSQueryError err
|| error_type == TSQueryErrorField
|| error_type == TSQueryErrorCapture) {
const char *suffix = src + error_offset;
bool is_anonymous = error_type == TSQueryErrorNodeType && suffix[-1] == '"';
int suffix_len = 0;
char c = suffix[suffix_len];
while (isalnum(c) || c == '_' || c == '-' || c == '.') {
c = suffix[++suffix_len];
if (is_anonymous) {
int backslashes = 0;
// Stop when we hit an unescaped double quote
while (c != '"' || backslashes % 2 != 0) {
if (c == '\\') {
backslashes += 1;
} else {
backslashes = 0;
}
c = suffix[++suffix_len];
}
} else {
// Stop when we hit the end of the identifier
while (isalnum(c) || c == '_' || c == '-' || c == '.') {
c = suffix[++suffix_len];
}
}
snprintf(err, errlen, "\"%.*s\":\n", suffix_len, suffix);
offset = strlen(err);

20
test/functional/treesitter/query_spec.lua
View File

@ -722,7 +722,25 @@ void ui_refresh(void)
eq(exp, pcall_err(exec_lua, "vim.treesitter.query.parse('c', ...)", cquery))
end
-- Invalid node type
-- Invalid node types
test(
'.../query.lua:0: Query error at 1:2. Invalid node type ">\\">>":\n'
.. '">\\">>" @operator\n'
.. ' ^',
'">\\">>" @operator'
)
test(
'.../query.lua:0: Query error at 1:2. Invalid node type "\\\\":\n'
.. '"\\\\" @operator\n'
.. ' ^',
'"\\\\" @operator'
)
test(
'.../query.lua:0: Query error at 1:2. Invalid node type ">>>":\n'
.. '">>>" @operator\n'
.. ' ^',
'">>>" @operator'
)
test(
'.../query.lua:0: Query error at 1:2. Invalid node type "dentifier":\n'
.. '(dentifier) @variable\n'