shithub: mc

Download patch

ref: 3b5a5cd9b9843d0ba824c756911456d57cf1c1be
parent: 4a2263e9daa8ce34bfb9796b36f23c15d060e306
author: Ori Bernstein <[email protected]>
date: Fri May 1 18:07:13 EDT 2015 

Add regex dumper.


--- a/libregex/bld.sub
+++ b/libregex/bld.sub
@@ -7,6 +7,11 @@
         lib ../libstd:std
 ;;
 
+bin redump {noinst} =
+	redump.myr
+        lib ../libstd:std
+;;
+
 gen ranges.myr {durable} =
 	mkchartab -a -p_ranges UnicodeData.txt -o ranges.myr
 ;;
--- a/libregex/compile.myr
+++ b/libregex/compile.myr
@@ -19,7 +19,7 @@
 
 /* Compiles a pattern into a regex */
 const compile = {pat
-	-> regexcompile(std.mk([.pat = pat, .nmatch = 1]))
+	-> regexcompile(std.mk([.pat = pat, .nmatch = 1]), 0)
 }
 
 const parse = {pat
@@ -43,11 +43,11 @@
 	var re
 
 	re = std.mk([.pat = pat, .nmatch = 1, .debug = true])
-	-> regexcompile(re)
+	-> regexcompile(re, 0)
 }
 
 /* compiles a pattern into an allocated regex */
-const regexcompile = {re
+const regexcompile = {re, id
 	match regexparse(re)
 	| `None:	-> `std.Fail (`Incomplete)
 	| `Fail f:	-> `std.Fail f
@@ -64,7 +64,7 @@
 		append(re, `Ilbra 0)
 		gen(re, t)
 		append(re, `Irbra 0)
-		append(re, `Imatch)
+		append(re, `Imatch id)
 		idump(re)
 		astfree(t)
 		-> `std.Ok re
@@ -394,7 +394,7 @@
 		/* control flow */
 		| `Ifork	(lip, rip):	std.put("`Ifork (%z,%z)\n", lip, rip) 
 		| `Ijmp ip:		std.put("`Ijmp %z\n", ip) 
-		| `Imatch:		std.put("`Imatch\n") 
+		| `Imatch id:		std.put("`Imatch %z\n", id) 
 		;;
 	;;
 }
--- a/libregex/interp.myr
+++ b/libregex/interp.myr
@@ -210,7 +210,7 @@
 		trace(re, thr, "\t%z:\tJmp %z\n", thr.ip, ip)
 		thr.ip = ip
 		-> false
-	| `Imatch:
+	| `Imatch id:
 		trace(re, thr, "\t%z:\tMatch\n", thr.ip)
 		finish(re, thr)
 		-> true
--- /dev/null
+++ b/libregex/redump.myr
@@ -1,0 +1,52 @@
+use std
+use bio
+use regex
+
+const main = {args
+	var cmd, opts
+	var fd
+
+	opts = [
+		.argdesc = "regex [inputs...]",
+		.minargs = 1
+	]
+	cmd = std.optparse(args, &opts)
+	match regex.dbgcompile(cmd.args[0])
+	| `std.Fail m:	
+		std.fatal(1, "unable to compile regex: %s\n", regex.failmsg(m))
+	| `std.Ok re:
+		if cmd.args.len > 1
+			runall(re, cmd.args)
+		else
+			fd = bio.mkfile(0, bio.Rd)
+			dump(re, fd)
+			bio.close(fd)
+		;;
+	;;
+}
+
+const runall = {re, files
+
+	for f in files
+		match bio.open(f, bio.Rd)
+		| `std.Some fd:
+			dump(re, fd)
+			bio.close(fd)
+		| `std.None:
+			std.fatal(1, "failed to open %s\n", f)
+		;;
+	;;
+}
+
+const dump = {re, fd 
+	while true
+		match bio.readln(fd)
+		| `std.Some ln:
+			regex.exec(re, ln)
+			std.slfree(ln)
+		| `std.None:
+			break
+		;;
+	;;
+}
+
--- a/libregex/types.myr
+++ b/libregex/types.myr
@@ -66,7 +66,7 @@
 		mend	: std.size[:]	/* match ends */
 	;;
 
-	type reinst = union
+	pkglocal type reinst = union
 		/* direct consumers */
 		`Ibyte	byte
 		`Irange	(byte, byte)
@@ -84,6 +84,6 @@
 		/* control flow */
 		`Ifork	(std.size, std.size)
 		`Ijmp	std.size
-		`Imatch
+		`Imatch	std.size
 	;;
 ;;