first try

.gitignore

@@ -8,3 +8,4 @@ Version.ml
 **/.DS_Store
 .vscode/
 /ligo.install
+/_coverage/

ligo.opam

@@ -11,6 +11,7 @@ depends: [
   "ocamlfind" { build }
   "dune" { build & = "1.11.4" }
   "menhir" { = "20190626" }
+  "bisect_ppx" {dev & >= "2.0.0"}
   "ppx_let"
   "ppx_deriving"
   "ppx_expect"
@@ -20,7 +21,10 @@ depends: [
   "alcotest" { with-test }
   "getopt"
   # work around upstream in-place update
-  "ocaml-migrate-parsetree" { = "1.3.1" }
+  "ocaml-migrate-parsetree" { = "1.4.0" }
+]
+pin-depends: [
+  ["bisect_ppx.git" "git+https://github.com/aantron/bisect_ppx.git"]
 ]
 build: [
   [ "dune" "build" "-p" name "-j" jobs ]

src/bin/dune

@@ -7,7 +7,7 @@
   )
   (modules cli cli_helpers version)
   (preprocess
-    (pps ppx_let)
+    (pps ppx_let bisect_ppx --conditional)
   )
   (flags (:standard -open Simple_utils))
 )

src/bin/expect_tests/dune

@@ -2,5 +2,5 @@
  (name cli_expect_tests)
  (libraries simple-utils cli)
  (inline_tests)
- (preprocess (pps ppx_let ppx_expect))
+ (preprocess (pps ppx_let ppx_expect bisect_ppx --conditional))
  (flags (:standard -open Simple_utils)))

src/dune

@@ -9,6 +9,6 @@
     main
   )
   (preprocess
-    (pps ppx_let)
+    (pps ppx_let bisect_ppx --conditional)
   )
 )

src/main/compile/dune

@@ -18,7 +18,7 @@
     self_michelson
   )
   (preprocess
-    (pps ppx_let)
+    (pps ppx_let bisect_ppx --conditional)
   )
   (flags (:standard -w +1..62-4-9-44-40-42-48-30@39@33 -open Simple_utils -open Tezos_utils ))
 )

src/main/dune

@@ -7,7 +7,7 @@
     uncompile
   )
   (preprocess
-    (pps ppx_let)
+    (pps ppx_let bisect_ppx --conditional)
   )
   (flags (:standard -w +1..62-4-9-44-40-42-48-30@39@33 -open Simple_utils -open Tezos_utils ))
 )

src/main/run/dune

@@ -17,7 +17,7 @@
     compile
   )
   (preprocess
-    (pps ppx_let)
+    (pps ppx_let bisect_ppx --conditional)
   )
   (flags (:standard -w +1..62-4-9-44-40-42-48-30@39@33 -open Simple_utils -open Tezos_utils ))
 )

src/main/uncompile/dune

@@ -11,7 +11,7 @@
     transpiler
   )
   (preprocess
-    (pps ppx_let)
+    (pps ppx_let bisect_ppx --conditional)
   )
   (flags (:standard -w +1..62-4-9-44-40-42-48-30@39@33 -open Simple_utils -open Tezos_utils ))
 )

src/passes/1-parser/cameligo/dune

@@ -15,8 +15,11 @@
    str
    simple-utils
    tezos-utils
-   getopt)
- (flags (:standard -open Simple_utils -open Parser_shared )))
+   getopt )
+ (preprocess
+   (pps bisect_ppx --conditional) )
+ (flags (:standard -open Simple_utils -open Parser_shared ))
+)
 
 (executable
   (name LexerMain)

src/passes/1-parser/dune

@@ -10,7 +10,7 @@
     parser_reasonligo
   )
   (preprocess
-    (pps ppx_let)
+    (pps ppx_let bisect_ppx --conditional)
   )
   (flags (:standard -w +1..62-4-9-44-40-42-48-30@39@33 -open Simple_utils -open Parser_shared))
 )

src/passes/1-parser/pascaligo/dune

@@ -10,12 +10,17 @@
  (public_name ligo.parser.pascaligo)
  (modules AST pascaligo Parser ParserLog LexToken)
  (libraries
-    menhirLib
-    parser_shared
-    hex
-    simple-utils
-    tezos-utils)
- (flags (:standard  -open Parser_shared -open Simple_utils)))
+   menhirLib
+   parser_shared
+   hex
+   simple-utils
+   tezos-utils
+ )
+ (preprocess
+   (pps bisect_ppx --conditional)
+ )
+ (flags (:standard  -open Parser_shared -open Simple_utils))
+)
 
 (executable
   (name LexerMain)

src/passes/1-parser/reasonligo/dune

@@ -16,8 +16,13 @@
    str
    simple-utils
    tezos-utils
-   getopt)
- (flags (:standard -open Simple_utils -open Parser_shared -open Parser_cameligo)))
+   getopt   
+ )
+ (preprocess
+   (pps bisect_ppx --conditional)
+ )
+ (flags (:standard -open Simple_utils -open Parser_shared -open Parser_cameligo ))
+)
 
 (executable
   (name LexerMain)

src/passes/1-parser/shared/dune

@@ -7,7 +7,11 @@
     simple-utils
     uutf
     getopt
-    zarith)
+    zarith
+  )
+  (preprocess
+    (pps bisect_ppx --conditional)
+  )
   (modules
     Lexer
     LexerLog

src/passes/2-simplify/dune

@@ -12,6 +12,7 @@
   (preprocess
     (pps
       ppx_let
+      bisect_ppx --conditional
     )
   )
   (flags (:standard -w +1..62-4-9-44-40-42-48-30@39@33 -open Simple_utils ))

src/passes/3-self_ast_simplified/dune

@@ -6,7 +6,7 @@
     ast_simplified
   )
   (preprocess
-    (pps ppx_let)
+    (pps ppx_let bisect_ppx --conditional)
   )
   (flags (:standard -w +1..62-4-9-44-40-42-48-30@39@33 -open Simple_utils ))
 )

src/passes/4-typer/dune

@@ -11,7 +11,7 @@
     operators
   )
   (preprocess
-    (pps ppx_let)
+    (pps ppx_let bisect_ppx --conditional)
   )
   (flags (:standard -w +1..62-4-9-44-40-42-48-30@39@33 -open Simple_utils ))
 )

src/passes/6-transpiler/dune

@@ -10,7 +10,7 @@
     operators
   )
   (preprocess
-    (pps ppx_let)
+    (pps ppx_let bisect_ppx --conditional)
   )
   (flags (:standard -w +1..62-4-9-44-40-42-48-30@39@33 -open Simple_utils ))
 )

src/passes/7-self_mini_c/dune

@@ -6,7 +6,7 @@
   )
   (inline_tests)
   (preprocess
-    (pps ppx_let ppx_expect)
+    (pps ppx_let ppx_expect bisect_ppx --conditional)
   )
   (flags (:standard -w +1..62-4-9-44-40-42-48-30@39@33 -open Simple_utils ))
 )

src/passes/8-compiler/dune

@@ -9,7 +9,7 @@
     operators
   )
   (preprocess
-    (pps ppx_let)
+    (pps ppx_let bisect_ppx --conditional)
   )
   (flags (:standard -w +1..62-4-9-44-40-42-48-30@39@33 -open Simple_utils -open Tezos_utils ))
 )

src/passes/9-self_michelson/dune

@@ -6,7 +6,7 @@
     tezos-utils
   )
   (preprocess
-    (pps ppx_let)
+    (pps ppx_let bisect_ppx --conditional)
   )
   (flags (:standard -w +1..62-4-9-44-40-42-48-30@39@33 -open Simple_utils ))
 )

src/passes/operators/dune

@@ -9,7 +9,7 @@
     mini_c
   )
   (preprocess
-    (pps ppx_let)
+    (pps ppx_let bisect_ppx --conditional)
   )
   (flags (:standard -open Simple_utils ))
 )

src/stages/ast_simplified/dune

@@ -7,7 +7,7 @@
     stage_common
   )
   (preprocess
-    (pps ppx_let)
+    (pps ppx_let bisect_ppx --conditional)
   )
   (flags (:standard -open Simple_utils ))
 )

src/stages/ast_typed/dune

@@ -8,7 +8,7 @@
     stage_common
   )
   (preprocess
-    (pps ppx_let)
+    (pps ppx_let bisect_ppx --conditional)
   )
   (flags (:standard -open Simple_utils))
 )

src/stages/common/dune

@@ -7,7 +7,7 @@
   )
   (inline_tests)
   (preprocess
-    (pps ppx_let ppx_expect)
+    (pps ppx_let ppx_expect bisect_ppx --conditional)
   )
   (flags (:standard -open Simple_utils))
 )

src/stages/mini_c/dune

@@ -7,6 +7,6 @@
     stage_common
   )
   (inline_tests)
-  (preprocess (pps ppx_expect ppx_let))
+  (preprocess (pps ppx_expect ppx_let bisect_ppx --conditional))
   (flags (:standard -w +1..62-4-9-44-40-42-48-30@39@33 -open Simple_utils ))
 )

src/stages/typesystem/dune

@@ -8,7 +8,7 @@
     mini_c
   )
   (preprocess
-    (pps ppx_let)
+    (pps ppx_let bisect_ppx --conditional)
   )
   (flags (:standard -w +1..62-4-9-44-40-42-48-30@39@33 -open Simple_utils ))
 )

src/test/dune

@@ -7,7 +7,7 @@
     tezos-crypto
   )
   (preprocess
-    (pps ppx_let)
+    (pps ppx_let bisect_ppx --conditional)
   )
   (flags (:standard -w +1..62-4-9-44-40-42-48@39@33 -open Simple_utils ))
 )