`target()` as used in parsing "let" and "if let" implements parsing
nested tuples and structs. But it does not implement parsing literals.
The functions `match_variant()` and `with_parameters()` as used in
parsing "when" blocks do not implement parsing nested structs, but it
implements parsing literals.
This PR combines `match_variant()` and `with_parameters()` into
`target()`, so that all `{%when%}` support nested structs, too.
Askama uses the syntax `{% when Variant with (parameters) %}` in
`{% match %}` blocks. This is done because Askama does not implement the
whole pattern matching of Rust's `match` statements.
This PR wants to bring Askama a step closer Rust's matching, so the
"with" keyword should not be needed anymore.
Askama uses the syntax `{% when Variant with (parameters) %}` in
`{% match %}` blocks.
This change allows the optional use of the keyword "with" in "let" and
"if let" statements, too.
The current rust_test uses `stringify!()`. The documentation gives us
the warning:
> Note that the expanded results of the input tokens may change in the
> future. You should be careful if you rely on the output.
In the current nightly rust the result was indeed changed, so the test
not fails.
This PR replaces the test with another macro, that does not depend on
`stringify!()`.
Closes issue #504.
rust-lang/rust#82069 made error message that stem macro invocations more
verbose. Since Rust 1.54 (currently in beta) the message includes the
name of the offending macro.
This PR uses version_check to select the appropriate expected error
message.
* Fixed#397
* Updated parser to ignore whitespace between match and when
* Updated test cases
* Updated Python script to generate match ws tests
* Added match ws tests
* Resolved rustfmt lint
This allows a more natural filter usage: `{{ val | fmt("{:?}") }}`
as well as enabling convenient filter composition:
`{{ price | to_f64 | fmt("${:.2}") | center }}`
Do not attempt to parse escape sequences thoroughly. Instead let the
Rust compiler to check the string literals and provide nice error
messages if necessary.
