From cab694dcead92a554654d7fa3f08909d519425f0 Mon Sep 17 00:00:00 2001 From: Tim Foley Date: Thu, 29 Jun 2017 08:55:09 -0700 Subject: Add meta-definitions for AST types - The big change here is that all the definitions for syntax-node classes have been macro-ized, to that we can do light metaprogramming over them - The use of macros for this has big down-sides, but I'm not quite ready to do anything more heavy-weight right now - The macro-ized definitions can be included multiple times, to generate different declarations/code as needed - The first example of using this meta-programming facility is a new visitor system - The actual visitor base classes and the dispatch logic are all generated from the meta-files - There was only one visitor left in the code: the semantics checker, so that was ported to the new system. - All current test cases pass, so *of course* that means all is well. --- source/slang/object-meta-begin.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 source/slang/object-meta-begin.h (limited to 'source/slang/object-meta-begin.h') diff --git a/source/slang/object-meta-begin.h b/source/slang/object-meta-begin.h new file mode 100644 index 000000000..e4187a600 --- /dev/null +++ b/source/slang/object-meta-begin.h @@ -0,0 +1,36 @@ +// object-meta-begin.h + +#ifndef SYNTAX_CLASS +#error The 'SYNTAX_CLASS' macro should be defined before including 'object-meta-begin.h' +#endif + +#ifndef ABSTRACT_SYNTAX_CLASS +#define ABSTRACT_SYNTAX_CLASS(NAME, BASE) SYNTAX_CLASS(NAME, BASE) +#endif + +#ifndef END_SYNTAX_CLASS +#define END_SYNTAX_CLASS() /* empty */ +#endif + +#ifndef DECL_FIELD +#define DECL_FIELD(TYPE, NAME) SYNTAX_FIELD(TYPE, NAME) +#endif + +#ifndef SYNTAX_FIELD +#define SYNTAX_FIELD(TYPE, NAME) FIELD(TYPE, NAME) +#endif + +#ifndef FIELD_INIT +#define FIELD_INIT(TYPE, NAME, INIT) FIELD(TYPE, NAME) +#endif + +#ifndef FIELD +#define FIELD(...) /* empty */ +#endif + +#ifndef RAW +#define RAW(...) /* empty */ +#endif + +#define SIMPLE_SYNTAX_CLASS(NAME, BASE) SYNTAX_CLASS(NAME, BASE) END_SYNTAX_CLASS() + -- cgit v1.2.3