Add project skeleton

1 files changed, 51 insertions, 0 deletions

diff --git a/type.c b/type.c
new file mode 100644
index 0000000..b142227
--- /dev/null
+++ b/type.c
@@ -0,0 +1,51 @@
+#include "type.h"
+#include "parse.h"
+#include <string.h>
+
+const struct type *type_find(const struct fn *fn, const char *s)
+{
+    static const struct type builtins[] =
+    {
+        {.type = BUILTIN, .u.b.name = "void"},
+        {.type = BUILTIN, .u.b.name = "byte", .sz = 1, .sign = 1},
+        {.type = BUILTIN, .u.b.name = "halfword", .sz = 2, .sign = 1},
+        {.type = BUILTIN, .u.b.name = "word", .sz = 4, .sign = 1},
+        {.type = BUILTIN, .u.b.name = "long", .sz = 8, .sign = 1},
+        {.type = BUILTIN, .u.b.name = "ubyte", .sz = 1},
+        {.type = BUILTIN, .u.b.name = "uhalfword", .sz = 2},
+        {.type = BUILTIN, .u.b.name = "uword", .sz = 4},
+        {.type = BUILTIN, .u.b.name = "ulong", .sz = 8}
+    };
+
+    const struct td *td = fn->td;
+
+    for (size_t i = 0; i < sizeof builtins / sizeof *builtins; i++)
+    {
+        const struct type *t = &builtins[i];
+
+        if (!strcmp(t->u.b.name, s))
+            return t;
+    }
+
+    if (td)
+        for (size_t i = 0; i < td->ntypes; i++)
+        {
+            const struct type *t = &td->types[i];
+
+            if (!strcmp(t->tk->s, s))
+            {
+                if (t->type == T)
+                {
+                    const struct type *a = t->u.t.alias;
+                    const char *name = a->type == BUILTIN ?
+                        a->u.b.name : a->tk->s;
+
+                    return type_find(fn, name);
+                }
+                else
+                    return t;
+            }
+        }
+
+    return NULL;
+}