Move command line handling into a module

gcc/elna1.cc

@@ -85,12 +85,15 @@ static elna::boot::dependency elna_parse_file(dependency_state& state, const cha
     for (const auto& sub_tree : outcome.tree->imports)
     {
         std::filesystem::path sub_path = "source" / elna::boot::build_path(sub_tree->segments);
+        std::unordered_map<std::filesystem::path, elna::boot::symbol_bag>::const_iterator cached_import =
+            state.cache.find(sub_path);
 
-        if (state.cache.find(sub_path) == state.cache.end())
+        if (cached_import == state.cache.end())
         {
-            elna_parse_file(state, state.allocate_path(sub_path));
+            elna_parse_file(state, sub_path.c_str());
+            cached_import = state.cache.find(sub_path);
         }
-        outcome_bag.add_import(state.cache.find(sub_path)->second);
+        outcome_bag.add_import(cached_import->second);
     }
     elna::boot::error_list semantic_errors = analyze_semantics(filename, outcome.tree, outcome_bag);
 

include/elna/boot/dependency.h

@@ -50,16 +50,5 @@ namespace elna::boot
             : globals(elna::boot::builtin_symbol_table()), custom(custom)
         {
         }
-
-        const char *allocate_path(const std::filesystem::path path)
-        {
-            std::size_t current_size = this->allocated_paths.size();
-            this->allocated_paths += path.native() + '\0';
-
-            return this->allocated_paths.data() + current_size;
-        }
-
-    private:
-        std::string allocated_paths;
     };
 }

source/Lexer.elna

@@ -3,7 +3,7 @@
   obtain one at https://mozilla.org/MPL/2.0/. *)
 module;
 
-import cstdio, cstring, common;
+import cstdio, cstring, cctype, cstdlib, common;
 
 const
   CHUNK_SIZE := 85536;
@@ -301,21 +301,20 @@ proc compare_keyword(keyword: String, token_start: BufferPosition, token_end: ^C
 var
   result: Bool;
   index: Word;
-  keyword_length: Word;
   continue: Bool;
 begin
   index := 0u;
   result := true;
-  keyword_length := Length(keyword);
-  continue := (index < keyword_length) & (token_start.iterator <> token_end);
+  continue := (index < keyword.length) & (token_start.iterator <> token_end);
 
   while continue & result do
-    result := (keyword[index] = token_start.iterator^) or (Lower(keyword[index]) = token_start.iterator^);
+    result := keyword[index] = token_start.iterator^
+      or cast(tolower(cast(keyword[index]: Int)): Char) = token_start.iterator^;
     token_start.iterator := token_start.iterator + 1;
     index := index + 1u;
-    continue := (index < keyword_length) & (token_start.iterator <> token_end)
+    continue := (index < keyword.length) & (token_start.iterator <> token_end)
   end;
-  result := result & (index = Length(keyword));
+  result := result & index = keyword.length;
 
   return result & (token_start.iterator = token_end)
 end;

source/cctype.elna

@@ -3,9 +3,12 @@
   obtain one at https://mozilla.org/MPL/2.0/. *)
 module;
 
-proc isdigit(c: Int ) -> Int; extern;
-proc isalnum(c: Int) -> Int; extern;
-proc isalpha(c: Int) -> Int; extern;
-proc isspace(c: Int) -> Int; extern;
+proc isdigit*(c: Int ) -> Int; extern;
+proc isalnum*(c: Int) -> Int; extern;
+proc isalpha*(c: Int) -> Int; extern;
+proc isspace*(c: Int) -> Int; extern;
+
+proc tolower*(c: Int) -> Int; extern;
+proc toupper*(c: Int) -> Int; extern;
 
 end.

source/command_line_interface.elna

@@ -1,6 +1,10 @@
 (* This Source Code Form is subject to the terms of the Mozilla Public License,
   v. 2.0. If a copy of the MPL was not distributed with this file, You can
   obtain one at https://mozilla.org/MPL/2.0/. *)
+
+(*
+  Command line handling.
+*)
 module;
 
 import cstdlib, cstring, common;
@@ -52,7 +56,7 @@ begin
       end;
       parsed := true
     end;
-    if (parameter[1] <> '-') & ~parsed then
+    if (parameter^ <> '-') & ~parsed then
       parsed := true;
 
       if result^.input <> nil then

source/main.elna

@@ -3,7 +3,7 @@
   obtain one at https://mozilla.org/MPL/2.0/. *)
 program;
 
-import cstdlib, cstdio, cctype, common, Lexer;
+import cstdio, cctype, common, command_line_interface, Lexer;
 
 const
   SEEK_SET* := 0;
@@ -113,11 +113,6 @@ type
     end;
     location: Location
   end;
-  CommandLine = record
-    input: ^Char;
-    lex: Bool;
-    parse: Bool
-  end;
   Tokenizer* = record
     length: Word;
     data: ^Token
@@ -702,55 +697,6 @@ begin
   return lexer
 end;
 
-(*
-  Command line handling.
-*)
-
-proc parse_command_line*(argc: Int, argv: ^^Char) -> ^CommandLine;
-var
-  parameter: ^^Char;
-  i: Int;
-  result: ^CommandLine;
-begin
-  i := 1;
-  result := cast(malloc(#size(CommandLine)): ^CommandLine);
-  result^.lex := false;
-  result^.parse := false;
-  result^.input := nil;
-
-  while i < argc & result <> nil do
-    parameter := argv + i;
-
-    if strcmp(parameter^, "--lex\0".ptr) = 0 then
-      result^.lex := true
-    elsif strcmp(parameter^, "--parse\0".ptr) = 0 then
-      result^.parse := true
-    elsif parameter^^ <> '-' then
-      if result^.input <> nil then
-      write_s("Fatal error: Only one source file can be given.\n");
-      result := nil
-      else
-        result^.input := parameter^
-      end
-    else
-      write_s("Fatal error: Unknown command line options: ");
-
-      write_z(parameter^);
-      write_s(".\n");
-
-      result := nil
-    end;
-
-    i := i + 1
-  end;
-  if result <> nil & result^.input = nil then
-    write_s("Fatal error: no input files.\n");
-    result := nil
-  end;
-
-  return result
-end;
-
 (*
   Parser.
 *)