Re-root site.

common/structures.fs

@@ -0,0 +1,41 @@
+\ Copyright 2022 Bradley D. Nelson
+\
+\ Licensed under the Apache License, Version 2.0 (the "License");
+\ you may not use this file except in compliance with the License.
+\ You may obtain a copy of the License at
+\
+\     http://www.apache.org/licenses/LICENSE-2.0
+\
+\ Unless required by applicable law or agreed to in writing, software
+\ distributed under the License is distributed on an "AS IS" BASIS,
+\ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+\ See the License for the specific language governing permissions and
+\ limitations under the License.
+
+( Vocabulary for building C-style structures )
+
+vocabulary structures   structures definitions
+
+variable last-align
+: typer ( align sz "name" ) create , ,
+                            does> dup cell+ @ last-align ! @ ;
+1 1 typer i8
+2 2 typer i16
+4 4 typer i32
+cell 8 typer i64
+cell cell typer ptr
+long-size long-size typer long
+
+variable last-struct
+
+: struct ( "name" ) 1 0 typer latestxt >body last-struct ! ;
+: align-by ( a n -- a ) 1- dup >r + r> invert and ;
+: struct-align ( n -- )
+  dup last-struct @ cell+ @ max last-struct @ cell+ !
+  last-struct @ @ swap align-by last-struct @ ! ;
+: field ( n "name" )
+  last-align @ struct-align
+  create last-struct @ @ , last-struct @ +!
+  does> @ + ;
+
+forth definitions