feat: print line number of ignored statements

bindings/javascript/src/index.spec.ts

@@ -83,10 +83,7 @@ test("error format contains newlines", async t => {
     await zencode_exec(`a`);
   } catch (e) {
     const lines = e.logs.split('\n');
-
-    t.true(lines.includes('[W]  Zencode text too short to parse'));
-    t.true(lines.includes('[W]  Zencode is missing version check, please add: rule check version N.N.N'));
-    t.true(lines.includes('[!]  Execution aborted with errors.'));
+    t.true(lines.includes('[!]  Zencode parser error'));
   }
 })
 

bindings/python3/tests/test_all.py

@@ -37,7 +37,7 @@ def test_zencode_failure():
 Then print the data
 """
     res = zencode_exec(contract)
-    assert("ERROR" in res.logs)
+    assert("fatal error" in res.logs)
 
 # def test_lua_call_hello_world():
 #     lua_res = zenroom_exec(

src/lua/init.lua

@@ -21,10 +21,10 @@
 -- zen_load_extensions(L) usually after zen_init()
 
 -- -- remap fatal and error
-function fatal(msg)
+function fatal(x)
 	ZEN.debug()
-	msg = msg or 'fatal error'
-	error(msg, 2)
+	local msg <const> = x.msg or 'fatal error'
+	error('Zencode line '..x.linenum..': '..msg, 2)
 end
 
 _G['REQUIRED'] = {}
@@ -87,6 +87,7 @@ MAXITER = tonumber(STR_MAXITER)
 -- ZENCODE starts here
 
 -- declare HEAP globals in the main co-routine
+AST = {} -- Abstract Syntax Tree filled by ZEN:parser
 IN  = {} -- Given processing, import global DATA from json
 TMP = {} -- temporary buffer used by Given
 ACK = {} -- When processing,  destination for push*

src/lua/statemachine.lua

@@ -69,6 +69,7 @@ function machine.create(options)
   fsm.options = options
   fsm.current = options.initial or 'none'
   fsm.events = {}
+  fsm.line = 0
 
   for _, event in ipairs(options.events or {}) do
     local name = event.name