toolcontext: introduce --share-dir

[nit.git] / src / toolcontext.nit

diff --git a/src/toolcontext.nit b/src/toolcontext.nit
index bdd6338..de15aed 100644 (file)
--- a/src/toolcontext.nit
+++ b/src/toolcontext.nit
@@ -58,6 +58,13 @@ class Message
        # * enclose identifiers, keywords and pieces of code with back-quotes.
        var text: String
 
+       # The severity level
+       #
+       # * 0 is advices (see `ToolContext::advice`)
+       # * 1 is warnings (see `ToolContext::warning`)
+       # * 2 is errors (see `ToolContext::error`)
+       var level: Int
+
        # Comparisons are made on message locations.
        redef fun <(other: OTHER): Bool do
                if location == null then return true
@@ -123,9 +130,16 @@ redef class Location
                        messages = ms
                end
                ms.add m
+               var s = file
+               if s != null then s.messages.add m
        end
 end
 
+redef class SourceFile
+       # Errors and warnings associated to the whole source.
+       var messages = new Array[Message]
+end
+
 # Global context for tools
 class ToolContext
        # Number of errors
@@ -169,6 +183,16 @@ class ToolContext
                return tags.has("all") or tags.has(tag)
        end
 
+       # Output all current stacked messages, total and exit the program
+       #
+       # If there is no error, exit with 0, else exit with 1.
+       fun quit
+       do
+               check_errors
+               errors_info
+               if error_count > 0 then exit(1) else exit(0)
+       end
+
        # Output all current stacked messages
        #
        # Return true if no errors occurred.
@@ -215,7 +239,7 @@ class ToolContext
        # Return the message (to add information)
        fun error(l: nullable Location, s: String): Message
        do
-               var m = new Message(l,null,s)
+               var m = new Message(l, null, s, 2)
                if messages.has(m) then return m
                if l != null then l.add_message m
                messages.add m
@@ -247,12 +271,12 @@ class ToolContext
        # Return the message (to add information) or null if the warning is disabled
        fun warning(l: nullable Location, tag: String, text: String): nullable Message
        do
-               if opt_warning.value.has("no-{tag}") then return null
-               if not opt_warning.value.has(tag) and opt_warn.value == 0 then return null
                if is_warning_blacklisted(l, tag) then return null
-               var m = new Message(l, tag, text)
+               var m = new Message(l, tag, text, 1)
                if messages.has(m) then return null
                if l != null then l.add_message m
+               if opt_warning.value.has("no-{tag}") then return null
+               if not opt_warning.value.has(tag) and opt_warn.value == 0 then return null
                messages.add m
                warning_count = warning_count + 1
                if opt_stop_on_first_error.value then check_errors
@@ -276,12 +300,12 @@ class ToolContext
        # Return the message (to add information) or null if the warning is disabled
        fun advice(l: nullable Location, tag: String, text: String): nullable Message
        do
-               if opt_warning.value.has("no-{tag}") then return null
-               if not opt_warning.value.has(tag) and opt_warn.value <= 1 then return null
                if is_warning_blacklisted(l, tag) then return null
-               var m = new Message(l, tag, text)
+               var m = new Message(l, tag, text, 0)
                if messages.has(m) then return null
                if l != null then l.add_message m
+               if opt_warning.value.has("no-{tag}") then return null
+               if not opt_warning.value.has(tag) and opt_warn.value <= 1 then return null
                messages.add m
                warning_count = warning_count + 1
                if opt_stop_on_first_error.value then check_errors
@@ -350,6 +374,9 @@ class ToolContext
        # Option --nit-dir
        var opt_nit_dir = new OptionString("Base directory of the Nit installation", "--nit-dir")
 
+       # Option --share-dir
+       var opt_share_dir = new OptionString("Directory containing tools assets", "--share-dir")
+
        # Option --help
        var opt_help = new OptionBool("Show Help (This screen)", "-h", "-?", "--help")
 
@@ -518,6 +545,20 @@ The Nit language documentation and the source code of its tools and libraries ma
        # The identified root directory of the Nit package
        var nit_dir: String is noinit
 
+       # Shared files directory.
+       #
+       # Most often `nit/share/`.
+       var share_dir: String is lazy do
+               var sharedir = opt_share_dir.value
+               if sharedir == null then
+                       sharedir = nit_dir / "share"
+                       if not sharedir.file_exists then
+                               fatal_error(null, "Fatal Error: cannot locate shared files directory in {sharedir}. Uses --share-dir to define it's location.")
+                       end
+               end
+               return sharedir
+       end
+
        private fun compute_nit_dir: String
        do
                # the option has precedence