Struct wast::Error [−][src]
pub struct Error { /* fields omitted */ }
Expand description
A convenience error type to tie together all the detailed errors produced by this crate.
This type can be created from a lexer::LexError
or [parser::Error
].
This also contains storage for file/text information so a nice error can be
rendered along the same lines of rustc’s own error messages (minus the
color).
This type is typically suitable for use in public APIs for consumers of this crate.
Implementations
Creates a new error with the given message
which is targeted at the
given span
Note that you’ll want to ensure that set_text
or set_path
is called
on the resulting error to improve the rendering of the error message.
To provide a more useful error this function can be used to extract relevant textual information about this error into the error itself.
The contents
here should be the full text of the original file being
parsed, and this will extract a sub-slice as necessary to render in the
Display
implementation later on.
To provide a more useful error this function can be used to set the file name that this error is associated with.
The path
here will be stored in this error and later rendered in the
Display
implementation.
Returns the underlying LexError
, if any, that describes this error.