From 92bbf45f333bbf9190befc52a6bc114dc2957e41 Mon Sep 17 00:00:00 2001
From: lemon <lsof@mailbox.org>
Date: Sun, 7 Aug 2022 15:26:53 +0200
Subject: basic templates (generics)

---
 bootstrap/all.h | 35 +++++++++++++++++++++++++++++++++--
 1 file changed, 33 insertions(+), 2 deletions(-)

(limited to 'bootstrap/all.h')

diff --git a/bootstrap/all.h b/bootstrap/all.h
index 8c80fe4..aba2bc3 100644
--- a/bootstrap/all.h
+++ b/bootstrap/all.h
@@ -70,6 +70,8 @@ enum toktype {
    TKident,
    TKmacident,
    TKgensym,
+   TKtype,
+   TKexpr,
    TKeof,
 };
 #define NUM_KEYWORDS TKintlit
@@ -91,6 +93,8 @@ struct tok {
          const char *str;
          int strlen;
       };
+      const struct type *ty;
+      struct expr *ex;
    };
 };
 
@@ -121,8 +125,9 @@ struct parser {
       slice_t(struct expanarg) args;
       struct toktree toks;
       const char *name;
-      struct span spp,span;
+      struct span span;
       int idx;
+      bool tepl;
    } *curexpan; // macro expansions
    int expanno;
    const struct type *targty;
@@ -178,6 +183,13 @@ struct type {
             const struct type *ty;
          }) flds;
          slice_t(struct decl *) decls;
+         slice_t(struct teplarg {
+            bool typ;
+            union {
+               const struct type *ty;
+               struct tok tok;
+            };
+         }) tpargs;
          bool fwd;
          int id;
       } agg;
@@ -218,6 +230,7 @@ enum decltype {
    Dlet,
    Dstatic,
    Dmacro,
+   Dtepl,
 };
 
 struct decl {
@@ -235,9 +248,27 @@ struct decl {
          int id, fnid;
       } var;
       struct macro macro;
+      struct tepl {
+         enum decltype t;
+         enum typetype tkind;
+         const char *name;
+         struct env *env;
+         slice_t(struct teplparam) params;
+         struct teplcache {
+            struct teplcache *next;
+            slice_t(struct teplarg) args;
+            const struct type *ty;
+         } *cache;
+         struct toktree toks;
+      } tepl;
    };
 };
 
+struct teplparam {
+   const char *name;
+   bool typ;
+};
+
 struct env {
    struct env *parent;
    struct decls {
@@ -444,7 +475,7 @@ bswap64(u64 x) {
     (slice)->n = (v)->length)
 
 #define container_of(x, T, fld) \
-   (T *)((char *)(x) - offsetof(T, fld))
+   ((T *)((char *)(x) - offsetof(T, fld)))
 
 ///
 /////////////////////////////////
-- 
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