[Ongoing] Rewrite frontend to use Flex/Bison

This is a merge of another experiment, so the changes are large:

- separated "modules" directory into frontend/backend
  - adjusted module names and moved files for this to happen
- removed modules lexer & parser
- removed all the unit tests (most were outdated)
- added Bison, flex, and C development tools to manifest.scm
- added lexer.l, a source file used by the flex utility with a functioning lexing implementation
- added parser.y, a source file used by the bison utility with a functioning parser implementation
- added node.c and node.h, which parser.y uses to construct an AST of a C source file (up to binary ops)
- added driver.c, a Guile-C interface that provides a module to scheme programs
- added a Makefile to make all of this
- added stuff to .gitignore

1 files changed, 0 insertions, 19 deletions

diff --git a/src/unit-tests/utils/t-factory.test.scm b/src/unit-tests/utils/t-factory.test.scm
deleted file mode 100644
index d780c17..0000000
--- a/src/unit-tests/utils/t-factory.test.scm
+++ /dev/null
@@ -1,19 +0,0 @@
-;; -*- compile-command: "guile -L ./src/modules ./src/unit-tests/utils/t-factory.test.scm"; -*-
-(use-modules (srfi srfi-64)
-             (ast assembly-tree)
-             (utils t-factory))
-
-
-(test-begin "t-factory-harness")
-
-
-(test-equal "make first temporary"
-  't.101
-  (temporary-name (make-t)))
-
-(test-equal "make second temporary"
-  't.102
-  (temporary-name (make-t)))
-
-
-(test-end "t-factory-harness")