change the parser to use file-lines

add lines-crc32
update source-files for the contents -> lines change

core/io/crc32/crc32.factor

@@ -28,3 +28,6 @@ DEFER: crc32-table inline
     >r HEX: ffffffff dup r> [ (crc32) ] each bitxor ;
 
 : file-crc32 ( path -- n ) file-contents crc32 ;
+
+: lines-crc32 ( seq -- n )
+    HEX: ffffffff tuck [ [ (crc32) ] each ] reduce bitxor ;

core/parser/parser.factor

@@ -382,7 +382,7 @@ SYMBOL: parse-hook
         dup file set
         source-file-definitions clone old-definitions set
     ] [ drop ] if
-    contents \ contents set ;
+    lines \ lines set ;
 
 : smudged-usage-warning ( usages removed -- )
     parser-notes? [
@@ -426,7 +426,7 @@ SYMBOL: parse-hook
     file get dup [
         [ record-form ] keep
         [ record-modified ] keep
-        [ \ contents get record-checksum ] keep
+        [ \ lines get record-checksum ] keep
         record-definitions
         forget-smudged
     ] [
@@ -443,7 +443,7 @@ SYMBOL: parse-hook
     [
         [
             start-parsing
-            \ contents get string-lines parse-fresh
+            \ lines get parse-fresh
             dup finish-parsing
         ] [ ] [ undo-parsing ] cleanup
     ] no-parse-hook ;

core/source-files/source-files.factor

@@ -33,8 +33,8 @@ uses definitions ;
     dup source-file-path ?resource-path file-modified
     swap set-source-file-modified ;
 
-: record-checksum ( source-file contents -- )
-    crc32 swap set-source-file-checksum ;
+: record-checksum ( source-file lines -- )
+    lines-crc32 swap set-source-file-checksum ;
 
 : (xref-source) ( source-file -- pathname uses )
     dup source-file-path <pathname> swap source-file-uses
@@ -63,7 +63,7 @@ uses definitions ;
 : reset-checksums ( -- )
     source-files get [
         swap ?resource-path dup exists?
-        [ file-contents record-checksum ] [ 2drop ] if
+        [ file-lines record-checksum ] [ 2drop ] if
     ] assoc-each ;
 
 M: pathname where pathname-string 1 2array ;