Merge branch 'pu/qualified-modules' into wip

[nit.git] / src / mmloader.nit

diff --git a/src/mmloader.nit b/src/mmloader.nit
index 8f7c2ac..919099f 100644 (file)
--- a/src/mmloader.nit
+++ b/src/mmloader.nit
@@ -37,7 +37,8 @@ class Message
                return location.as(not null) < other.location.as(not null)
        end
 
-       redef fun to_s: String do
+       redef fun to_s: String
+       do
                var l = location
                if l == null then
                        return text
@@ -45,6 +46,50 @@ class Message
                        return "{l}: {text}"
                end
        end
+
+       fun to_color_string: String
+       do
+               var esc = 27.ascii
+               var red = "{esc}[0;31m"
+               var bred = "{esc}[1;31m"
+               var green = "{esc}[0;32m"
+               var yellow = "{esc}[0;33m"
+               var def = "{esc}[0m"
+
+               var l = location
+               if l == null then
+                       return text
+               else if l.file == null then
+                       return "{yellow}{l}{def}: {text}"
+               else
+                       var i = location.line_start
+                       var line_start = l.file.line_starts[i-1]
+                       var line_end = line_start
+                       var string = l.file.string
+                       while line_end+1 < string.length and string[line_end+1] != '\n' and string[line_end+1] != '\r' do
+                               line_end += 1
+                       end
+                       print "{i-1}: {line_start} && {line_end}"
+                       var lstart = string.substring(line_start, location.column_start - 1)
+                       var cend
+                       if i != location.line_end then
+                               cend = line_end - line_start + 1
+                       else
+                               cend = location.column_end
+                       end
+                       var lmid = string.substring(line_start + location.column_start - 1, cend - location.column_start + 1)
+                       var lend = string.substring(line_start + cend, line_end - line_start - cend + 1)
+                       var indent = new Buffer
+                       for j in [line_start..line_start+location.column_start-1[ do
+                               if string[j] == '\t' then
+                                       indent.add '\t'
+                               else
+                                       indent.add ' '
+                               end
+                       end
+                       return "{yellow}{l}{def}: {text}\n\t{lstart}{bred}{lmid}{def}{lend}\n\t{indent}^"
+               end
+       end
 end
 
 # Global context for tools
@@ -69,7 +114,11 @@ class ToolContext
                        _message_sorter.sort(_messages)
 
                        for m in _messages do
-                               stderr.write("{m}\n")
+                               if opt_no_color.value then
+                                       stderr.write("{m}\n")
+                               else
+                                       stderr.write("{m.to_color_string}\n")
+                               end
                        end
 
                        _messages.clear
@@ -153,13 +202,16 @@ class ToolContext
        # Option --stop-on-first-error
        readable var _opt_stop_on_first_error: OptionBool = new OptionBool("Stop on first error", "--stop-on-first-error")
 
+       # Option --no-color
+       readable var _opt_no_color: OptionBool = new OptionBool("Do not use color to display errors and warnings", "--no-color")
+
        # Verbose level
        readable var _verbose_level: Int = 0
 
        init
        do
                super
-               option_context.add_option(opt_warn, opt_stop_on_first_error, opt_path, opt_log, opt_log_dir, opt_only_parse, opt_only_metamodel, opt_help, opt_version, opt_verbose)
+               option_context.add_option(opt_warn, opt_stop_on_first_error, opt_no_color, opt_path, opt_log, opt_log_dir, opt_only_parse, opt_only_metamodel, opt_help, opt_version, opt_verbose)
        end
 
        # Parse and process the options given on the command line