diff options
Diffstat (limited to 'Doc')
| -rw-r--r-- | Doc/lib/libast.tex | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/Doc/lib/libast.tex b/Doc/lib/libast.tex index ca798c9c5f..b3c3148e59 100644 --- a/Doc/lib/libast.tex +++ b/Doc/lib/libast.tex @@ -34,7 +34,13 @@ names of all child nodes. Each instance of a concrete class has one attribute for each child node, of the type as defined in the grammar. For example, \code{_ast.BinOp} -instances have an attribute \code{left} of type \code{_ast.expr}. +instances have an attribute \code{left} of type \code{_ast.expr}. +Instances of \code{_ast.expr} and \code{_ast.stmt} subclasses also +have lineno and col_offset attributes. The lineno is the line number +of source text (1 indexed so the first line is line 1) and the +col_offset is the utf8 byte offset of the first token that generated +the node. The utf8 offset is recorded because the parser uses utf8 +internally. If these attributes are marked as optional in the grammar (using a question mark), the value might be \code{None}. If the attributes |