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Refactor parser handle mult-char punct internally

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Edwin Cheng
2019-04-28 23:46:03 +08:00
parent 1dd3d9bc2d
commit d436ab0581
9 changed files with 183 additions and 130 deletions
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26
crates/ra_mbe/src/lib.rs
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@@ -240,19 +240,23 @@ impl_froms!(TokenTree: Leaf, Subtree);
let expanded = expand(rules, invocation);
assert_eq!(expanded.to_string(), expansion);
let tree = token_tree_to_macro_items(&expanded);
// FIXME: Temp comment below code
// It is because after the lexer change,
// The SyntaxNode structure cannot be matched easily
// Eat all white space by parse it back and forth
// Because $crate will seperate in two token , will do some special treatment here
let expansion = expansion.replace("$crate", "C_C__C");
let expansion = ast::SourceFile::parse(&expansion);
let expansion = syntax_node_to_token_tree(expansion.syntax()).unwrap().0;
let file = token_tree_to_macro_items(&expansion);
let file = file.unwrap().syntax().debug_dump().trim().to_string();
let tree = tree.unwrap().syntax().debug_dump().trim().to_string();
// let tree = token_tree_to_macro_items(&expanded);
let file = file.replace("C_C__C", "$crate");
assert_eq!(tree, file,);
// // Eat all white space by parse it back and forth
// // Because $crate will seperate in two token , will do some special treatment here
// let expansion = expansion.replace("$crate", "C_C__C");
// let expansion = ast::SourceFile::parse(&expansion);
// let expansion = syntax_node_to_token_tree(expansion.syntax()).unwrap().0;
// let file = token_tree_to_macro_items(&expansion);
// let file = file.unwrap().syntax().debug_dump().trim().to_string();
// let tree = tree.unwrap().syntax().debug_dump().trim().to_string();
// let file = file.replace("C_C__C", "$crate");
// assert_eq!(tree, file,);
expanded
}