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90ef070db3
2628: Add macro 2.0 support in parser r=matklad a=edwin0cheng
This PR added a new syntax kind : `MACRO_DEF` and a keyword `MACRO_KW`
there are two syntax for declarative macro 2.0 :
1. Normal : `macro m { ($i:ident) => {} }` , which handle similar to legacy one.
2. Call like: `macro m($i:ident) {}`, it produces a single token tree which have two child token trees : `($i:ident)` and `{}`
Co-authored-by: Edwin Cheng <edwin0cheng@gmail.com>
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| .. | ||
| ast | ||
| parsing | ||
| validation | ||
| algo.rs | ||
| ast.rs | ||
| fuzz.rs | ||
| grammar.ron | ||
| lib.rs | ||
| parsing.rs | ||
| ptr.rs | ||
| syntax_error.rs | ||
| syntax_node.rs | ||
| tests.rs | ||
| validation.rs | ||