AST node definition DSL #24

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opened 2025-10-22 14:16:41 +02:00 by alexander.nutz · 0 comments

alexander.nutz commented

2025-10-22 14:16:41 +02:00

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group ast
group pp_ast : ast

/// identifier used by other preprocess ast nodes
type pp_ident : pp_ast {}

/// maps 1:1 to `#define var val`
type pp_define_var : pp_ast {
  name: pp_ident,
  value: pp_ast
}

type pp_ifdef : pp_ast {
  what: pp_ident,
  /// note that cases that were not chosen might be incorrect
  was_defined: bool,
  then: pp_ast,
  otherwise: ?pp_ast
}

the implementation for that DSL should be a self contained 100% standard c89 compliant file

```d group ast group pp_ast : ast /// identifier used by other preprocess ast nodes type pp_ident : pp_ast {} /// maps 1:1 to `#define var val` type pp_define_var : pp_ast { name: pp_ident, value: pp_ast } type pp_ifdef : pp_ast { what: pp_ident, /// note that cases that were not chosen might be incorrect was_defined: bool, then: pp_ast, otherwise: ?pp_ast } ``` the implementation for that DSL should be a self contained 100% standard c89 compliant file