X-Git-Url: http://git.chise.org/gitweb/?a=blobdiff_plain;f=MInputMethod.cs;h=60e48d0babb7cbd4479b9ad12f79e9dc9b16cdd1;hb=6282d536074ad69f58f8d806e93c5ad949c560cc;hp=fcc097305ea127ed94a3ef33312e1b7b178cf43f;hpb=1a8c65705b6b6bb7dd5ecda2ff013b1d812065b0;p=m17n%2Fm17n-lib-cs.git diff --git a/MInputMethod.cs b/MInputMethod.cs index fcc0973..60e48d0 100644 --- a/MInputMethod.cs +++ b/MInputMethod.cs @@ -9,84 +9,78 @@ using M17N; using M17N.Core; using M17N.Input; +using Xex = System.Xml.Expression.Xexpression; + namespace M17N.Input { - using Xex = System.Xml.Expression.Xexpression; - public class MInputMethod { // Delegaes - public delegate bool Callback (MInputContext ic, MPlist args); + public delegate bool Callback (Context ic, MPlist args); // Class members - public static Callback PreeditStart, PreeditDone, PreeditDraw; - public static Callback StatusStart, StatusDone, StatusDraw; - public static Callback CandidateStart, CandidateDone, CandidateDraw; - public static Callback SetSpot; - public static Callback Toggle; - public static Callback Reset; + public static event Callback PreeditChanged; + public static event Callback StatusChanged; + public static event Callback CandidateChanged; public static Callback GetSurroundingText; public static Callback DeleteSurroundingText; - internal static Xex.Domain im_domain = new Xex.Domain (null); + internal static Xex.Domain im_domain + = new Xex.Domain ("input-method", null); private static MSymbol Minput_method = "input-method"; private static MSymbol Mdescription = "description"; private static MSymbol Mvariable = "variable"; private static MSymbol Mcommand = "command"; private static MSymbol Mmodule = "module"; - private static MSymbol Mmodule_list = "module-list"; private static MSymbol Mtitle = "title"; private static MSymbol Minclude = "include"; private static MSymbol Mmacro = "macro"; - private static MSymbol Mmacro_list = "macro-list"; private static MSymbol Mmap = "map"; private static MSymbol Mmap_list = "map-list"; private static MSymbol Mstate = "state"; - private static MSymbol Mstate_list = "state-list"; internal static MSymbol Mcandidates = "candidates"; - private static MSymbol Minsert = "insert"; - private static MSymbol Mdelete = "delete"; - private static MSymbol Mmove = "move"; - private static MSymbol Mmark = "mark"; - private static MSymbol Mmarker = "marker"; - private static MSymbol Madd = "add"; - private static MSymbol Msub = "sub"; - private static MSymbol Mmul = "mul"; - private static MSymbol Mdiv = "div"; - private static MSymbol Mif = "if"; - private static MSymbol Mcond = "cond"; - private static MSymbol Mchar_at = "char-at"; - private static MSymbol Msurrounding_text_p = "surrounding-text-p"; - private static MSymbol Mpushback = "pushback"; - private static MSymbol Mkeyseq = "keyseq"; + private static MSymbol Mat_minus_zero = "@-0"; + + private static Xex.Symbol Qmap = "map"; + private static Xex.Symbol Qrule = "rule"; + private static Xex.Symbol Qkeyseq = "keyseq"; + private static Xex.Symbol Qprogn = "progn"; + private static Xex.Symbol Qcatch = "catch"; + private static Xex.Symbol Qinsert = "insert"; + private static Xex.Symbol Qinsert_candidates = "insert-candidates"; + private static Xex.Symbol Qchar_at = "char-at"; + private static Xex.Symbol Qselect = "select"; + private static Xex.Symbol Qdelete = "delete"; + private static Xex.Symbol Qshift = "shift"; + private static Xex.Symbol Qmove = "move"; + private static Xex.Symbol Qmark = "mark"; + private static Xex.Symbol Qset = "set"; + private static Xex.Symbol Qadd = "add"; + private static Xex.Symbol Qsub = "sub"; + private static Xex.Symbol Qmul = "mul"; + private static Xex.Symbol Qdiv = "div"; + private static Xex.Symbol Qcond = "cond"; + private static Xex.Symbol Qsname = "sname"; + private static Xex.Symbol Qmname = "mname"; + private static Xex.Symbol Qstate_hook = "state-hook"; + private static Xex.Symbol Qcatch_all_branch = "catch-all-branch"; + private static Xex.Symbol Qbranch = "branch"; + private static Xex.Symbol Qstate = "state"; + private static Xex.Symbol Qtitle = "title"; + private static Xex.Symbol Qeq = "="; + private static Xex.Symbol Qeqeq = "=="; + private static Xex.Symbol Qcandidates_group_size = "candidates-group-size"; + + private static Xex.Term Tnil = new Xex.Term ((Xex.Symbol) "nil"); + private static Xex.Term Tcatch_tag = new Xex.Term ((Xex.Symbol) "@mimtag"); private static Dictionary im_table = new Dictionary (); - // Sub classes - private class Exception : System.Exception - { - bool error; - - public Exception (string msg) : base (msg) - { - error = true; - } - - public Exception (string fmt, params object[] args) - : base (String.Format (fmt, args)) - { - error = true; - } - - public Exception (string msg, bool error) : base (msg) - { - this.error = error; - } - } + internal static MInputMethod im_global = null; [FlagsAttribute] - private enum LoadStatus + protected enum LoadStatus { None = 0x00, Header = 0x01, @@ -96,736 +90,1174 @@ namespace M17N.Input }; [FlagsAttribute] - public enum KeyModifier - { - None = 0x00000000, - Shift_L = 0x00400000, - Shift_R = 0x00800000, - Shift = 0x00C00000, - Control_L = 0x01000000, - Control_R = 0x02000000, - Control = 0x03000000, - Alt_L = 0x04000000, - Alt_R = 0x08000000, - Alt = 0x0C000000, - AltGr = 0x10000000, - Super = 0x20000000, - Hyper = 0x40000000, - High = 0x70000000, - All = 0x7FC00000, - }; - - public struct Key - { - internal uint key; - - private static Dictionary keysyms - = new Dictionary (); - private static Dictionary keymodifiers - = new Dictionary (); - private static uint keysym_base = 0x200000; - private static uint char_mask = ~((uint) KeyModifier.All); - - static Key () - { - keysyms["bs"] = keysyms["backspace"] = 0x08; - keysyms["tab"] = 0x09; - keysyms["lf"] = keysyms["linefeed"] = 0x10; - keysyms["cr"] = keysyms["return"] = keysyms["enter"] = 0x13; - keysyms["esc"] = keysyms["escape"] = 0x1B; - keysyms["spc"] = keysyms["space"] = 0x20; - keysyms["del"] = keysyms["delete"] = 0x7F; - keymodifiers["shift-l"] = KeyModifier.Shift_L; - keymodifiers["shift-r"] = KeyModifier.Shift_R; - keymodifiers["shift"] = KeyModifier.Shift; - keymodifiers["control-l"] = KeyModifier.Control_L; - keymodifiers["control-r"] = KeyModifier.Control_R; - keymodifiers["control"] = KeyModifier.Control; - keymodifiers["alt-l"] = KeyModifier.Alt_L; - keymodifiers["alt-r"] = KeyModifier.Alt_R; - keymodifiers["alt"] = KeyModifier.Alt; - keymodifiers["altgr"] = KeyModifier.AltGr; - keymodifiers["super"] = KeyModifier.Super; - keymodifiers["hyper"] = KeyModifier.Hyper; + public enum ChangedStatus + { + None = 0x00, + StateTitle = 0x01, + PreeditText = 0x02, + CursorPos = 0x04, + CandidateList = 0x08, + CandidateIndex = 0x10, + CandidateShow = 0x20, + Preedit = PreeditText | CursorPos, + Candidate = CandidateList | CandidateIndex | CandidateShow, + } + + private static ChangedStatus CandidateAll = (ChangedStatus.CandidateList + | ChangedStatus.CandidateIndex + | ChangedStatus.CandidateShow); + + [FlagsAttribute] + public enum KeyModifier + { + None = 0x00000000, + Shift_L = 0x00400000, + Shift_R = 0x00800000, + Shift = 0x00C00000, + Control_L = 0x01000000, + Control_R = 0x02000000, + Control = 0x03000000, + Alt_L = 0x04000000, + Alt_R = 0x08000000, + Alt = 0x0C000000, + AltGr = 0x10000000, + Super = 0x20000000, + Hyper = 0x40000000, + High = 0x70000000, + All = 0x7FC00000, + }; + + public struct Key + { + internal uint key; + + private static Dictionary keysyms + = new Dictionary (); + private static Dictionary keymodifiers + = new Dictionary (); + private static uint keysym_base = 0x200000; + private static uint char_mask = ~((uint) KeyModifier.All); + public static Key Reload; + + static Key () + { + keysyms["bs"] = keysyms["backspace"] = 0x08; + keysyms["tab"] = 0x09; + keysyms["lf"] = keysyms["linefeed"] = 0x10; + keysyms["cr"] = keysyms["return"] = keysyms["enter"] = 0x13; + keysyms["esc"] = keysyms["escape"] = 0x1B; + keysyms["spc"] = keysyms["space"] = 0x20; + keysyms["del"] = keysyms["delete"] = 0x7F; + keymodifiers["shift-l"] = KeyModifier.Shift_L; + keymodifiers["shift-r"] = KeyModifier.Shift_R; + keymodifiers["shift"] = KeyModifier.Shift; + keymodifiers["control-l"] = KeyModifier.Control_L; + keymodifiers["control-r"] = KeyModifier.Control_R; + keymodifiers["control"] = KeyModifier.Control; + keymodifiers["alt-l"] = KeyModifier.Alt_L; + keymodifiers["alt-r"] = KeyModifier.Alt_R; + keymodifiers["alt"] = KeyModifier.Alt; + keymodifiers["altgr"] = KeyModifier.AltGr; + keymodifiers["super"] = KeyModifier.Super; + keymodifiers["hyper"] = KeyModifier.Hyper; + Reload = new Key (keysym_base); + keysyms["-reload"] = keysym_base++; + } + + private static uint decode_keysym (MSymbol keysym) + { + uint key; + string name = keysym.Name; + + if (name.Length == 1) + return name[0]; + name = name.ToLower (); + if (! keysyms.TryGetValue (name, out key)) + keysyms[name] = key = keysym_base++; + return key; + } + + private static uint combine_modifiers (uint c, KeyModifier modifiers) + { + if (c < 0x7F && c != 0x20) + { + if ((modifiers & KeyModifier.Shift) != KeyModifier.None + && Char.IsLower ((char) c)) + { + modifiers &= ~KeyModifier.Shift; + c = Char.ToUpper ((char) c); + } + if ((modifiers & KeyModifier.Control) != KeyModifier.None) + { + modifiers &= ~KeyModifier.Control; + c &= 0x1F; + } + } + return c | (uint) modifiers; + } + + public Key (uint c) { key = c; } + public Key (int c) { key = (uint) c; } + + public Key (uint c, KeyModifier modifiers) + { + key = combine_modifiers (c, modifiers); + } + + public Key (MSymbol keysym, KeyModifier modifiers) + { + key = combine_modifiers (decode_keysym (keysym), modifiers); + } + + public Key (MSymbol keysym) + { + string str = keysym.Name; + int len = str.Length; + int i; + KeyModifier modifiers = KeyModifier.None; + + for (i = 0; i + 2 < len && str[i + 1] == '-'; i += 2) + { + if (str[i] == 'S') + modifiers |= KeyModifier.Shift; + else if (str[i] == 'C') + modifiers |= KeyModifier.Control; + else if (str[i] == 'A') + modifiers |= KeyModifier.Alt; + else if (str[i] == 'G') + modifiers |= KeyModifier.AltGr; + else if (str[i] == 's') + modifiers |= KeyModifier.Super; + else if (str[i] == 'H') + modifiers |= KeyModifier.Hyper; + } + if (i + 1 == len) + key = combine_modifiers (str[i], modifiers); + else + key = combine_modifiers (decode_keysym (keysym), modifiers); + } + + public Key (MPlist plist) + { + KeyModifier modifiers = KeyModifier.None; + MPlist p; + + for (p = plist; ! p.IsEmpty; p = p.next) + { + if (p.IsInteger) + { + if (! p.next.IsEmpty) + throw new Exception ("Invalid Key: " + plist); + break; + } + else if (! p.IsSymbol) + throw new Exception ("Invalid Key: " + plist); + else + { + string name = p.Symbol.Name.ToLower (); + KeyModifier m; + + if (! keymodifiers.TryGetValue (name, out m)) + break; + modifiers |= m; + } + } + if (p.IsEmpty || ! p.next.IsEmpty) + throw new Exception ("Invalid Key: " + plist); + if (p.IsInteger) + key = combine_modifiers ((uint) p.Integer, modifiers); + else + key = combine_modifiers (decode_keysym (p.Symbol), modifiers); + } + + public bool HasModifier + { + get { return ((key & (uint) KeyModifier.All) != 0); } + } + + public static bool operator== (Key k1, Key k2) + { + return k1.key == k2.key; + } + + public static bool operator!= (Key k1, Key k2) + { + return k1.key != k2.key; + } + + public override bool Equals (object o) { return key == ((Key) o).key; } + + public override int GetHashCode () { return (int) key; } + + public bool Match (Key k) + { + if (k.key == key) + return true; + if ((k.key & char_mask) != (key & char_mask)) + return false; + KeyModifier m1 = ((KeyModifier) key) & KeyModifier.All; + KeyModifier m2 = ((KeyModifier) k.key) & KeyModifier.All; + return (((m1 & KeyModifier.Shift) == (m2 & KeyModifier.Shift) + || ((m1 & KeyModifier.Shift) == KeyModifier.Shift + && (m2 & KeyModifier.Shift) != KeyModifier.None)) + && ((m1 & KeyModifier.Control) == (m2 & KeyModifier.Control) + || ((m1 & KeyModifier.Control) == KeyModifier.Control + && (m2 & KeyModifier.Control) != KeyModifier.None)) + && ((m1 & KeyModifier.Alt) == (m2 & KeyModifier.Alt) + || ((m1 & KeyModifier.Alt) == KeyModifier.Alt + && (m2 & KeyModifier.Alt) != KeyModifier.None)) + && ((m1 & KeyModifier.High) == (m2 & KeyModifier.High))); + } + + public int ToChar () + { + return (int) (key & 0x1FFFFF); + } + + public override string ToString () + { + int c = ToChar (); + MText mt = null; + if (c < 0x20) + foreach (KeyValuePair kv in keysyms) + if ((uint) c == kv.Value) + { + mt = kv.Key; + break; + } + if (mt == null) + mt = new MText (c); + + KeyModifier m = ((KeyModifier) key) & KeyModifier.All; + + if (m != KeyModifier.None) + { + if ((m & KeyModifier.Shift) != KeyModifier.None) + mt.Ins (0, "S-"); + if ((m & KeyModifier.Control) != KeyModifier.None) + mt.Ins (0, "C-"); + if ((m & KeyModifier.Alt) != KeyModifier.None) + mt.Ins (0, "A-"); + if ((m & KeyModifier.AltGr) != KeyModifier.None) + mt.Ins (0, "G-"); + if ((m & KeyModifier.Super) != KeyModifier.None) + mt.Ins (0, "s-"); + if ((m & KeyModifier.Hyper) != KeyModifier.None) + mt.Ins (0, "H-"); + } + return (string) mt; + } + } + + internal class KeySeq : Xex.TermValue + { + public List keyseq = new List (); + + public override Xex.TermValue Clone () + { + KeySeq ks = new KeySeq (); + ks.keyseq.InsertRange (0, keyseq); + return ks; + } + + public KeySeq () { } + + public KeySeq (MPlist plist) + { + foreach (MPlist p in plist) + { + if (p.IsSymbol) + keyseq.Add (new Key (p.Symbol)); + else if (p.IsInteger) + keyseq.Add (new Key ((char) p.Integer)); + else if (p.IsPlist) + keyseq.Add (new Key (p.Plist)); + else + throw new Exception ("Invalid Key Sequence: " + plist); + } + } + + public KeySeq (MText mt) : base () + { + for (int i = 0; i < mt.Length; i++) + keyseq.Add (new Key ((uint) mt[i])); + } + + public KeySeq (List list) + { + int len = list.Count; + + for (int i = 0; i < len; i++) + { + if (list[i].IsInt) + keyseq.Add (new Key (list[i].Intval)); + else if (list[i].IsStr) + keyseq.Add (new Key (list[i].Strval)); + else if (list[i].IsSymbol) + keyseq.Add (new Key ((string) list[i].Symval)); + else + throw new Exception ("Invalid key: " + list[i]); + } + } + + public static Xex.TermValue parser (Xex.Domain domain, XmlNode node) + { + Xex.Term term = new Xex.Term (domain, node.FirstChild).Eval (domain); + return (term.IsStr ? new KeySeq ((MText) term.Strval) + : new KeySeq (term.Listval)); + } + + public override string ToString () + { + MText mt; + foreach (Key key in keyseq) + if (key.HasModifier || key.ToChar () < 0x20) + { + mt = "("; + foreach (Key k in keyseq) + { + if (mt.Length > 1) + mt.Cat (' '); + mt.Cat (k.ToString ()); + } + return (string) mt.Cat (")"); + } + mt = "\""; + foreach (Key k in keyseq) + { + int c = k.ToChar (); + + if (c == '\\' || c == '"') + mt.Cat ('\\'); + mt.Cat (c); + } + return (string) mt.Cat ("\""); + } + } + + public class Command + { + public MSymbol name; + public MText description; + internal List keys; + + public Command (MPlist p) + { + name = p.Symbol; + p = p.Next; + description = parse_description (p); + if (description == null) + description = "No description"; + keys = new List (); + for (p = p.next; ! p.IsEmpty; p = p.next) + { + if (p.IsMText) + keys.Add (new KeySeq (p.Text)); + else if (p.IsPlist) + keys.Add (new KeySeq (p.Plist)); + } + } + + public Command (XmlNode node) + { + name = node.Attributes[0].Value; + keys = new List (); + for (node = node.FirstChild; node != null; node = node.NextSibling) + { + if (node.Name == "description") + description = parse_description (node); + else if (node.Name == "keyseq") + keys.Add ((KeySeq) KeySeq.parser (null, node)); + } + } + + public override string ToString () + { + string str = "(" + name + " \"" + (string) description; + foreach (KeySeq keyseq in keys) + str += " " + keyseq; + return str + ")"; + } + } + + internal class Plugin + { + private string name; + private Assembly assembly; + private Type plugin_type; + + public Plugin (string name) + { + this.name = name; + } + + public MethodInfo GetMethod (Xex.Symbol name) + { + if (assembly == null) + { + assembly = Assembly.LoadFrom (name + ".dll"); + plugin_type = assembly.GetType ("M17n.MInputMethod.Plugin"); + } + + MethodInfo info = plugin_type.GetMethod ((string) name); + if (info == null) + throw new Exception ("Invalid plugin method: " + name); + return info; + } + + public override string ToString () + { + return String.Format ("(module {0}", name); + } + } + + internal class PluginMethod : Xex.Function + { + private Plugin plugin; + private MethodInfo method_info; + object[] parameters = new object[2]; + + public PluginMethod (Plugin plugin, string name) + : base ((Xex.Symbol) name, 0, -1) + { + this.plugin = plugin; + } + + public override Xex.Term Call (Xex.Domain domain, Xex.Variable vari, + Xex.Term[] args) + { + args = (Xex.Term[]) args.Clone (); + for (int i = 0; i < args.Length; i++) + { + args[i] = args[i].Eval (domain); + if (domain.Thrown) + return args[i]; + } + if (method_info == null) + method_info = plugin.GetMethod (name); + parameters[0] = domain.context; + parameters[1] = args; + return (Xex.Term) method_info.Invoke (null, parameters); + } + } + + internal abstract class Marker : Xex.TermValue + { + private MSymbol name; + + private Marker (MSymbol name) + { + this.name = name; + } + + public abstract int Position (Context ic); + + public virtual void Mark (Context ic) + { + throw new Exception ("Can't set predefined marker: " + name); + } + public virtual int CharAt (Context ic) + { + return ic.preedit[Position (ic)]; + } + + public override string ToString () + { + return "" + name.Name + ""; + } + + public static Xex.TermValue parser (Xex.Domain domain, XmlNode node) + { + return Get ((MSymbol) node.InnerText); + } + + public class Named : Marker + { + public Named (MSymbol name) : base (name) { } + + public override int Position (Context ic) + { + MPlist p = ic.marker_positions.Find (name); + return (p == null ? 0 : p.Integer); + } + + public override void Mark (Context ic) + { + ic.marker_positions.Put (name, ic.cursor_pos); + } + } + + public class Predefined : Marker + { + char tag; + + public Predefined (MSymbol name) : base (name) + { + tag = ((string) name)[1]; + } + + public override int Position (Context ic) + { + switch (tag) { + case '<': return 0; + case '>': return ic.preedit.Length; + case '-': return ic.cursor_pos - 1; + case '+': return ic.cursor_pos + 1; + case '[': + if (ic.cursor_pos > 0) + { + int pos = ic.cursor_pos; + int to; + ic.preedit.FindProp (Mcandidates, pos - 1, out pos, out to); + return pos; + } + return 0; + case ']': + if (ic.cursor_pos < ic.preedit.Length - 1) + { + int pos = ic.cursor_pos; + int from; + ic.preedit.FindProp (Mcandidates, pos, out from, out pos); + return pos; + } + return ic.preedit.Length; + default: + return tag - '0'; + } + } + } + + public class PredefinedAbsolute : Marker + { + private int pos; + + public PredefinedAbsolute (MSymbol name) : base (name) + { + if (! int.TryParse (((string) name).Substring (1), out pos)) + throw new Exception ("Invalid marker name: " + name); + } + + public override int Position (Context ic) + { + return (pos < ic.preedit.Length ? pos : ic.preedit.Length); + } + } + + public class PredefinedSurround : Marker + { + private int distance; + + public PredefinedSurround (MSymbol name) : base (name) + { + if (! int.TryParse (((string) name).Substring (2), out distance)) + throw new Exception ("Invalid marker name: " + name); + if (distance > 0) + distance--; + } + + public override int Position (Context ic) + { + return ic.cursor_pos + distance; + } + + public override int CharAt (Context ic) + { + int pos = ic.cursor_pos + distance; + if (pos < 0) + return ic.GetSurroundingChar (pos); + else if (pos >= ic.preedit.Length) + return ic.GetSurroundingChar (pos - ic.preedit.Length); + return ic.preedit[pos]; + } + } + + static internal Dictionary predefined_markers; + + static Marker () + { + predefined_markers = new Dictionary (); + MSymbol[] symlist = new MSymbol[] {"@<", "@>", "@-", "@+", "@[", "@]" }; + foreach (MSymbol s in symlist) + predefined_markers[s] = new Predefined (s); + } + + public static Marker Get (MSymbol name) + { + string str = name.Name; + if (str[0] == '@') + { + Predefined pred; + if (predefined_markers.TryGetValue (name, out pred)) + return pred; + if (str.Length == 1) + throw new Exception ("Invalid marker name: " + name); + if (Char.IsDigit (str[1])) + return new PredefinedAbsolute (name); + if (str.Length == 2 || name == Mat_minus_zero + || ! (str[1] == '-' || str[1] == '+')) + throw new Exception ("Invalid marker name: " + name); + return new PredefinedSurround (name); + } + return new Named (name); + } + } + + internal class Candidates + { + private class Block + { + public int Index; + public object Data; + + public Block (int index, Xex.Term term) + { + Index = index; + if (term.IsStr) + Data = (MText) term.Strval; + else + { + MPlist plist = new MPlist (); + MPlist p = plist; + foreach (Xex.Term t in term.Listval) + p = p.Add (MSymbol.mtext, (MText) t.Strval); + Data = plist; + } + } + + public Block (int index, MPlist plist) + { + Index = index; + if (plist.IsMText) + Data = plist.Text; + else if (plist.IsPlist) + Data = plist.Plist; + else + throw new Exception ("Invalid candidate: " + plist); + } + + public int Count + { + get { return (Data is MText + ? ((MText) Data).Length + : ((MPlist) Data).Count); } + } + + public object this[int i] + { + get { + if (Data is MText) return ((MText) Data)[i]; + return ((MPlist) Data)[i]; + } + } + } + + private Block[] blocks; + private int row = 0; + private int index = 0; + public object[] group; + + private bool IsFixed { get { return group != null; } } + private int Total { + get { + Block last = blocks[blocks.Length - 1]; + return last.Index + last.Count; } + } + + public int Column { + get { return (IsFixed ? index % group.Length + : index - blocks[row].Index); } + } + + public object Group { + get { return (IsFixed ? group : blocks[row].Data); } + } + + public int GroupLength + { + get { + if (IsFixed) + { + int nitems = group.Length; + int start = index - (index % nitems); + int total = Total; + return (start + nitems <= total ? nitems : total - start); + } + return blocks[row].Count; + } + } + + public object Current { + get { + return (IsFixed ? group[index % group.Length] + : blocks[row][index - blocks[row].Index]); + } + } + + public Candidates (MPlist list, int column) + { + int nblocks = list.Count; + + blocks = new Block[nblocks]; + for (int i = 0, start = 0; i < nblocks; i++, list = list.next) + start += (blocks[i] = new Block (index, list)).Count; + if (column > 0) + group = new object[column]; + } + + public Candidates (Xex.Term[] candidates, int column) + { + int nblocks = candidates.Length; + + blocks = new Block[nblocks]; + for (int i = 0, start = 0; i < nblocks; i++) + start += (blocks[i] = new Block (index, candidates[i])).Count; + if (column > 0) + group = new object[column]; + } + + public static void Detach (Context ic) + { + ic.preedit.PopProp (0, ic.preedit.Length, Mcandidates); + ic.candidates = null; + ic.changed |= (ChangedStatus.Preedit | ChangedStatus.CursorPos + | CandidateAll); } - private static uint decode_keysym (MSymbol keysym) - { - uint key; - string name = keysym.Name; - - if (name.Length == 1) - return name[0]; - name = name.ToLower (); - if (! keysyms.TryGetValue (name, out key)) - keysyms[name] = key = keysym_base++; - return key; - } + // Fill the array "group" by candidates stating from START. + // START must be a multiple of "column". Return the number of + // valid candidates in "group". - private static uint combine_modifiers (uint c, KeyModifier modifiers) + private int fill_group (int start) { - if (c < 0x7F && c != 0x20) + int nitems = group.Length; + int r = row; + Block b = blocks[r]; + + if (start < b.Index) + while (start < b.Index) + b = blocks[--r]; + else + while (start >= b.Index + b.Count) + b = blocks[++r]; + row = r; + + int count = b.Count; + start -= b.Index; + for (int i = 0; i < nitems; i++, start++) { - if ((modifiers & KeyModifier.Shift) != KeyModifier.None - && Char.IsLower ((char) c)) - { - modifiers &= ~KeyModifier.Shift; - c = Char.ToUpper ((char) c); - } - if ((modifiers & KeyModifier.Control) != KeyModifier.None) + if (start >= count) { - modifiers &= ~KeyModifier.Control; - c &= 0x1F; + r++; + if (r == blocks.Length) + return i; + b = blocks[r]; + count = b.Count; + start = 0; } - } - return c | (uint) modifiers; + group[i] = b[start]; + } + return nitems; } - public Key (uint c) - { - key = c; - } + // Update "row" to what contains the first candidate of + // the previous candidate-group, update "current_index", and + // update "group" if necessary. Return the previous + // candidate-group. Set NITEMS to the number of valid + // candidates contained in that group. - public Key (uint c, KeyModifier modifiers) + public int PrevGroup () { - key = combine_modifiers (c, modifiers); + int nitems; + int col = Column; + + if (IsFixed) + { + nitems = group.Length; + if ((index -= col + nitems) < 0) + index = (Total / nitems) * nitems; + nitems = fill_group (index); + } + else + { + row = row > 0 ? row-- : blocks.Length - 1; + nitems = blocks[row].Count; + index = blocks[row].Index; + } + index += col < nitems ? col : nitems - 1; + return nitems; } - public Key (MSymbol keysym, KeyModifier modifiers) + public int NextGroup () { - key = combine_modifiers (decode_keysym (keysym), modifiers); + int nitems; + int col = Column; + + if (IsFixed) + { + nitems = group.Length; + if ((index += nitems - col) >= Total) + index = 0; + nitems = fill_group (index); + } + else + { + row = row < blocks.Length - 1 ? row + 1 : 0; + nitems = blocks[row].Count; + index = blocks[row].Count; + } + index += col < nitems ? col : nitems - 1; + return nitems; } - public Key (MSymbol keysym) + public void Prev () { - string str = keysym.Name; - int len = str.Length; - int i; - KeyModifier modifiers = KeyModifier.None; + int col = Column; - for (i = 0; i + 2 < len && str[i + 1] == '-'; i += 2) + if (col == 0) { - if (str[i] == 'S') - modifiers |= KeyModifier.Shift; - else if (str[i] == 'C') - modifiers |= KeyModifier.Control; - else if (str[i] == 'A') - modifiers |= KeyModifier.Alt; - else if (str[i] == 'G') - modifiers |= KeyModifier.AltGr; - else if (str[i] == 's') - modifiers |= KeyModifier.Super; - else if (str[i] == 'H') - modifiers |= KeyModifier.Hyper; + int nitems = PrevGroup (); + index += col < nitems - 1 ? col : nitems - 1; } - if (i + 1 == len) - key = combine_modifiers (str[i], modifiers); else - key = combine_modifiers (decode_keysym (keysym), modifiers); + index--; } - public Key (MPlist plist) + public void Next () { - KeyModifier modifiers = KeyModifier.None; - MPlist p; + int col = Column; + int nitems = GroupLength; - for (p = plist; ! p.IsEmpty; p = p.next) + if (col == nitems - 1) { - if (p.IsInteger) - { - if (! p.next.IsEmpty) - throw new Exception ("Invalid Key: " + plist); - break; - } - else if (! p.IsSymbol) - throw new Exception ("Invalid Key: " + plist); - else - { - string name = p.Symbol.Name.ToLower (); - KeyModifier m; - - if (! keymodifiers.TryGetValue (name, out m)) - break; - modifiers |= m; - } + nitems = NextGroup (); + index -= Column; } - if (p.IsEmpty || ! p.next.IsEmpty) - throw new Exception ("Invalid Key: " + plist); - if (p.IsInteger) - key = combine_modifiers ((uint) p.Integer, modifiers); else - key = combine_modifiers (decode_keysym (p.Symbol), modifiers); + index++; } - public bool HasModifier + public void First () { - get { return ((key & (uint) KeyModifier.All) != 0); } + index -= Column; } - public bool Match (Key k) + public void Last () { - if (k.key == key) - return true; - if ((k.key & char_mask) != (key & char_mask)) - return false; - KeyModifier m1 = ((KeyModifier) key) & KeyModifier.All; - KeyModifier m2 = ((KeyModifier) k.key) & KeyModifier.All; - return (((m1 & KeyModifier.Shift) == (m2 & KeyModifier.Shift) - || ((m1 & KeyModifier.Shift) == KeyModifier.Shift - && (m2 & KeyModifier.Shift) != KeyModifier.None)) - && ((m1 & KeyModifier.Control) == (m2 & KeyModifier.Control) - || ((m1 & KeyModifier.Control) == KeyModifier.Control - && (m2 & KeyModifier.Control) != KeyModifier.None)) - && ((m1 & KeyModifier.Alt) == (m2 & KeyModifier.Alt) - || ((m1 & KeyModifier.Alt) == KeyModifier.Alt - && (m2 & KeyModifier.Alt) != KeyModifier.None)) - && ((m1 & KeyModifier.High) == (m2 & KeyModifier.High))); + index += GroupLength - (Column + 1); } - public override string ToString () + public object Select (int col) { - string str = Char.ToString ((char) key); - KeyModifier m = ((KeyModifier) key) & KeyModifier.All; + int maxcol = GroupLength - 1; + if (col > maxcol) + col = maxcol; + index = index - Column + col; + return Current; + } - if (m != KeyModifier.None) + public object Select (Selector selector) + { + switch (selector.Tag) { - if ((m & KeyModifier.Shift) != KeyModifier.None) - str = "S-" + str; - if ((m & KeyModifier.Control) != KeyModifier.None) - str = "C-" + str; - if ((m & KeyModifier.Alt) != KeyModifier.None) - str = "A-" + str; - if ((m & KeyModifier.AltGr) != KeyModifier.None) - str = "G-" + str; - if ((m & KeyModifier.Super) != KeyModifier.None) - str = "s-" + str; - if ((m & KeyModifier.Hyper) != KeyModifier.None) - str = "H-" + str; + case '<': First (); break; + case '>': Last (); break; + case '-': Prev (); break; + case '+': Next (); break; + case '[': PrevGroup (); break; + case ']': NextGroup (); break; + default: break; } - return str; + return Current; + } + + public override string ToString () + { + return (String.Format ("", row, index) + + Group + + ""); } } - public class KeySeq : Xex.Object + internal class Selector : Xex.TermValue { - List keyseq = new List (); + static new Dictionary selectors; + + static Selector () + { + selectors = new Dictionary (); + selectors ["@<"] = selectors["@first"] = new Selector ('<'); + selectors ["@="] = selectors["@current"] = new Selector ('='); + selectors ["@>"] = selectors["@last"] = new Selector ('>'); + selectors ["@-"] = selectors["@previous"] = new Selector ('-'); + selectors ["@+"] = selectors["@next"] = new Selector ('+'); + selectors ["@["] = selectors["@previous-candidate-change"] + = new Selector ('['); + selectors ["@]"] = selectors["@next-candidate-change"] + = new Selector (']'); + } - public KeySeq () { } + private readonly char tag; - public KeySeq (MPlist plist) - { - foreach (MPlist p in plist) - { - if (p.IsSymbol) - keyseq.Add (new Key (p.Symbol)); - else if (p.IsInteger) - keyseq.Add (new Key ((char) p.Integer)); - else if (p.IsPlist) - keyseq.Add (new Key (p.Plist)); - else - throw new Exception ("Invalid Key Sequence: " + plist); - } - } + public char Tag { get { return tag; } } - public KeySeq (MText mt) : base () + private Selector (char tag) { this.tag = tag; } + + public static Xex.TermValue parser (Xex.Domain domain, XmlNode node) { - for (int i = 0; i < mt.Length; i++) - keyseq.Add (new Key ((uint) mt[i])); + return Get ((MSymbol) node.InnerText); } - private static uint parse_integer (string str) + public static Xex.TermValue Get (MSymbol name) { - if (Char.IsDigit (str[0])) - { - if (str[0] == '0' && str.Length > 2 && str[1] == 'x') - { - uint i = 0; - for (int idx = 2; idx < str.Length; idx++) - { - uint c = str[idx]; - if (c >= '0' && c <= '9') - i = i * 16 + (c - '0'); - else if (c >= 'A' && c <= 'F') - i = i * 16 + 10 + (c - 'A'); - else if (c >= 'a' && c <= 'f') - i = i * 16 + 10 + (c - 'a'); - else - break; - } - return i; - } - return UInt32.Parse (str); - } - else if (str[0] == '?') - return str[1]; - return 0; + Selector selector; + if (! selectors.TryGetValue (name, out selector)) + throw new Exception ("Invalid selector name: " + name); + return selector; } + } - public KeySeq (XmlNode node) - { - XmlAttributeCollection acol = node.Attributes; - XmlNode n; + internal class Map + { + public MSymbol name; + public List entries = new List (); - if (acol != null && (n = acol["keys"]) != null) - { - foreach (char c in n.Value) - keyseq.Add (new Key ((uint) c)); - } + public Map (MSymbol name) { this.name = name; } - for (node = node.FirstChild; node != null; node = node.NextSibling) - { - if (node.Name == "key-event") - keyseq.Add (new Key ((MSymbol) node.InnerText)); - else - keyseq.Add (new Key (parse_integer (node.InnerText))); - } - } + public class Entry + { + public KeySeq keyseq; + public Xex.Term[] actions; - public KeySeq (Xex.Term[] args) + public Entry (Xex.Domain domain, KeySeq keyseq, Xex.Term[] actions) { - foreach (Xex.Term term in args) - { - if (term.IsName) - keyseq.Add (new Key ((MSymbol) term.Nameval.name)); - else - keyseq.Add (new Key (term.Strval)); - } + this.keyseq = keyseq; + this.actions = actions; } + } public override string ToString () { - string str; - - foreach (Key key in this) - if (key.HasModifier) - { - str = "(keyseq"; - foreach (Key k in this) - str += " " + k.ToString (); - return str + ")"; - } - str = "\""; - foreach (Key key in this) - str += key.ToString (); - return str + "\""; + string str = "(" + name; + foreach (Entry e in entries) + str += " " + e.keyseq.ToString (); + return str + ")"; } } - public class Variable + internal class Keymap { - public MSymbol name; - public MText description; - public Type type; - public object value; - public object[] candidates; + public Dictionary submaps; + public Xex.Term[] map_actions, branch_actions; - public Variable (MPlist p) - { - name = p.Symbol; - p = p.Next; - description = parse_description (p); - if (description == null) - description = new MText ("No description"); - else - p = p.next; - type = (p.IsMText ? typeof (MText) - : p.IsInteger ? typeof (int) - : p.IsSymbol ? typeof (MSymbol) - : typeof (object)); - value = p.val; - p = p.next; - candidates = new object[p.Count]; - for (int i = 0; ! p.IsEmpty; i++, p = p.next) - candidates[i] = p.val; - } + public Keymap () { } - private static Type parse_value (XmlNode node, out object value) + public void Add (KeySeq keys, int index, + Xex.Term[] map_actions, Xex.Term[] branch_actions) { - string typename = node.Attributes["type"].Value; - Type type; - - if (typename == "integer") - { - int i; - if (! Int32.TryParse (node.InnerText, out i)) - i = 0; - value = i; - type = typeof (int); - } - else if (typename == "string") + if (index == keys.keyseq.Count) { - MText mt = node.InnerText; - value = mt; - type = typeof (MText); - } - else if (typename == "symbol") - { - MSymbol sym = node.InnerText; - value = sym; - type = typeof (MSymbol); + this.map_actions = map_actions; + this.branch_actions = branch_actions; } else { - value = null; - type = typeof (object); + Key key = keys.keyseq[index]; + Keymap sub = null; + + if (submaps == null) + submaps = new Dictionary (); + else + submaps.TryGetValue (key, out sub); + if (sub == null) + submaps[key] = sub = new Keymap (); + sub.Add (keys, index + 1, map_actions, branch_actions); } - return type; } - public Variable (XmlNode node) + public void AddMap (Map map, Xex.Term[] branch_actions) { - name = node.Attributes["id"].Value; - for (node = node.FirstChild; node != null; node = node.NextSibling) - if (node.NodeType == XmlNodeType.Element) - { - if (node.Name == "description") - description = parse_description (node); - else if (node.Name == "value") - type = parse_value (node, out value); - else if (node.Name == "valiable-value-candidate") - { - XmlNodeList n_list = node.ChildNodes; - candidates = new object[n_list.Count]; - for (int i = 0; i < n_list.Count; i++) - { - object val; - parse_value (n_list[i], out val); - candidates[i] = val; - } - } - } + foreach (Map.Entry entry in map.entries) + Add (entry.keyseq, 0, entry.actions, branch_actions); } - public override string ToString () + public Keymap Lookup (KeySeq keys, ref int index) { - return ("(" + name + " \"" + (string) description - + "\" " + type + " " + value + " " + candidates + ")"); - } - } - - public class Command - { - public MSymbol name; - public MText description; - public List keys; + Keymap sub; - public Command (MPlist p) - { - name = p.Symbol; - p = p.Next; - description = parse_description (p); - if (description == null) - description = "No description"; - keys = new List (); - for (p = p.next; ! p.IsEmpty; p = p.next) + if (index < keys.keyseq.Count + && submaps != null + && submaps.TryGetValue (keys.keyseq[index], out sub)) { - if (p.IsMText) - keys.Add (new KeySeq (p.Text)); - else if (p.IsPlist) - keys.Add (new KeySeq (p.Plist)); + index++; + return sub.Lookup (keys, ref index); } + return this; } - public Command (XmlNode node) + private void describe (MText mt, KeySeq keyseq) { - name = node.Attributes["id"].Value; - keys = new List (); - for (node = node.FirstChild; node != null; node = node.NextSibling) + if (map_actions != null || branch_actions != null) { - if (node.Name == "description") - description = parse_description (node); - else if (node.Name == "keyseq") - keys.Add (new KeySeq (node)); + if (mt.Length > 0) + mt.Cat (" "); + mt.Cat ('(').Cat (keyseq.ToString ()); + if (map_actions != null) + foreach (Xex.Term term in map_actions) + mt.Cat (' ').Cat (term.ToString ()); + if (branch_actions != null) + foreach (Xex.Term term in branch_actions) + mt.Cat (' ').Cat (term.ToString ()); + mt.Cat (')'); } + if (submaps != null) + foreach (KeyValuePair kv in submaps) + { + keyseq.keyseq.Add (kv.Key); + kv.Value.describe (mt, keyseq); + keyseq.keyseq.RemoveAt (keyseq.keyseq.Count - 1); + } } public override string ToString () { - string str = "(" + name + " \"" + (string) description; - foreach (KeySeq keyseq in keys) - str += " " + keyseq; - return str + ")"; + MText mt = ""; + KeySeq keyseq = new KeySeq (); + + describe (mt, keyseq); + return (string) mt; } } - internal class Plugin + internal class State { - public string name; - public Assembly assembly; - public MPlist methods; + public Xex.Symbol name; + public MText title; + public Xex.Term[] enter_actions, fallback_actions; + public Keymap keymap = new Keymap (); - public override string ToString () + public State (Xex.Symbol name, MText title) { - string str = "(" + name; - for (MPlist p = methods; ! p.IsEmpty; p = p.next) - str += " " + p.key; - return str + ")"; + this.name = name; + this.title = title; } - public Xex.Term Call (MSymbol method, MInputContext ic, Xex.Term[] args) + public State (MInputMethod im, XmlNode node) { - if (assembly == null) + this.name = node.Attributes[Qsname].Value; + XmlAttribute attr = node.Attributes[Qtitle]; + if (attr != null) + title = (MText) attr.Value; + else + title = im.title; + keymap = new Keymap (); + for (node = node.FirstChild; node != null; node = node.NextSibling) { - try { - assembly = Assembly.LoadFrom (name + ".dll"); - } catch { - return Xex.Zero; - } - Type t = assembly.GetType ("Plugin"); - for (MPlist p = plugin.methods; ! p.IsEmpty; p = p.next) - p.Set (p.key, t.GetMethod (p.key.Name)); + if (node.Name == Qstate_hook) + enter_actions = Xex.ParseTerms (im.domain, node.FirstChild); + else if (node.Name == Qcatch_all_branch) + fallback_actions = Xex.ParseTerms (im.domain, node.FirstChild); + else if (node.Name == Qbranch) + { + MSymbol mapname = node.Attributes[Qmname].Value; + Map map; + if (im.maps.TryGetValue (mapname, out map)) + keymap.AddMap (map, Xex.ParseTerms (im.domain, + node.FirstChild)); + else + throw new Exception ("Unknown map: " + mapname); + } } - - MethodInfo method_info = (MethodInfo) methods.Get (method); - if (method_info == null) - return Xex.Zero; - Xex.Term result = (Xex.Term) method_info.Invoke (null, args); - return result.Eval (); } - } - internal class PluginMethod : Function - { - public Plugin plugin; - public MSymbol method; - - public PluginMethod (Plugin plugin, MSymbol name) - : base ((Name) name.name, 0, -1) - { - this.plugin = plugin; - method = name.name.Substring (plugin.name.Length + 1); - } - - public override Term Call (Xex.Domain domain, Xex.Variable vari, - Xex.Term[] args) + public State (MInputMethod im, MPlist plist) { - Xex.Term[] args = (Xex.Term[]) args.Clone (); - for (int i = 0; i < args.Length; i++) + if (! plist.IsSymbol) + throw new Exception ("Invalid state: " + plist); + this.name = plist.Symbol.Name; + plist = plist.next; + if (plist.IsMText) { - args[i] = args[i].Eval (domain); - if (domain.Thrown) - return args[i]; + title = plist.Text; + plist = plist.next; } - return plugin.Call (method, (MIntutContext) domain.context, args); + else + title = im.title; + keymap = new Keymap (); + for (; ! plist.IsEmpty; plist = plist.next) + { + if (! plist.IsPlist) + throw new Exception ("Invalid branch: " + plist); + MPlist p = plist.Plist; + if (! p.IsSymbol) + throw new Exception ("Invalid branch: " + p); + MSymbol mapname = p.Symbol; + if (mapname == MSymbol.t) + enter_actions = im.parse_actions (p.next, false); + else if (mapname == MSymbol.nil) + fallback_actions = im.parse_actions (p.next, false); + else + { + Map map; + if (im.maps.TryGetValue (mapname, out map)) + keymap.AddMap (map, im.parse_actions (p.next, false)); + else + throw new Exception ("Unknown map: " + mapname); + } + } } - } - - internal class PluginCall : Xex.TermValue - { - PluginMethod method; - Xex.Term[] args; - public PluginCall (Plugin plugin, MSymbol entry, Xex.Term[] args) - { - this.plugin = plugin; - this.entry = entry; - this.args = args; - } + public override string ToString () + { + MText mt = "(" + name; - public override Xex.Term Eval (Xex.Domain domain) - { - Xex.Term[] args = new Xex.Term[this.args.Length]; - for (int i = 0; i < args.Length; i++) - args[i] = this.args[i].Eval (domain); - return plugin.Call (entry, args); - } + if (title != null) + mt.Cat (" \"" + title + "\""); + mt.Cat (keymap.ToString ()); + return (string) mt + ")"; + } } - internal abstract class Marker : Xex.TermValue - { - MSymbol name; - MInputContext ic; + // Instance members + internal Xex.Domain domain; - public Marker (MSymbol name, MInputContext ic) - { - this.name = name; - this.ic = ic; - } + protected LoadStatus load_status = LoadStatus.None; + protected MDatabase.Tag tag; + private MDatabase mdb; - public abstract int Position { get; set; } - } - - internal class NamedMarker : Marker - { - int position; - - public NamedMaker (MSymbol name, MInputContext ic) : base (name, ic) - { - ic.markers.Put (name, this); - } - - public override int Position { - get { return position; } - set { position = value; } - } - } - - internal class SystemMarker : Marker - { - public SystemMarker (MSymbol name, MInputContext ic) : base (name, ic) - { - } - - public override int Position { - get { - switch (name.Name[1]) - { - case '<': return 0; - case '>': return ic.preedit.Length; - case '-': return ic.cursor_pos - 1; - case '+': return ic.cursor_pos + 1; - case '[': - if (ic.cursor_pos > 0) - { - int pos = ic.cursor_os; - int to; - ic.preedit.FindProp (MInputMethod.Mcandidates, pos - 1, - out pos, out to); - return pos; - } - return 0; - case ']': - if (ic.cursor_pos < ic.preedit.Length - 1) - { - int pos = ic.cursor_pos; - int from; - ic.preedit.FindProp (MInputMethod.Mcandidates, pos, - out from, out pos); - return pos; - } - return ic.preedit.Length; - default: - return name.Name[1] - '0'; - } - } - set { - throw new Exception ("Can't set predefined marker: " + name); - } - } - } - - internal class Map - { - public MSymbol name; - public Dictionary submaps; - public Xex actions; - - public void Add (KeySeq keys, int index, Xex actions) - { - Map sub = null; - - if (submaps == null) - submaps = new Dictionary (); - else - submaps.TryGetValue (keys[index], out sub); - if (sub == null) - { - Key key = keys[index]; - submaps[key] = sub = new Map (); - } - if (index + 1 < keys.Count) - sub.Add (keys, index + 1, actions); - else - this.actions = actions; - } - - public Xex Lookup (KeySeq keys, int index) - { - Map sub; - - if (index + 1 == keys.Count) - return actions; - if (submaps.TryGetValue (keys[index], out sub)) - return sub.Lookup (keys, index + 1); - return null; - } - - private void describe (MText mt, KeySeq keyseq) - { - if (keyseq.Count > 0) - { - mt.Cat (" (").Cat (keyseq.ToString ()); - if (actions != null) - mt.Cat (' ').Cat (actions.ToString ()); - mt.Cat (')'); - } - if (submaps != null) - foreach (KeyValuePair kv in submaps) - { - keyseq.Add (kv.Key); - kv.Value.describe (mt, keyseq); - keyseq.RemoveAt (keyseq.Count - 1); - } - } - - public override string ToString () - { - MText mt = "(" + name.Name; - KeySeq keyseq = new KeySeq (); - - describe (mt, keyseq); - mt.Cat (')'); - return (string) mt; - } - } - - internal class State - { - public MSymbol name; - public MText title; - public MPlist branches = new MPlist (); - - public State (MSymbol name) - { - this.name = name; - } - - public override string ToString () - { - MText mt = "(" + name.Name; - - if (title != null) - mt.Cat (" \"" + title + "\""); - for (MPlist p = branches; ! p.IsEmpty; p = p.next) - mt.Cat (" (" + p.Key + " " + (Xex) p.Val + ")"); - return (string) mt + ")"; - } - } - - // Instance members - internal Xex.Domain domain; - - private LoadStatus load_status = LoadStatus.None; - private MDatabase.Tag tag; - private MDatabase mdb; - - private MText description; - internal MText title; - internal Command[] commands; - internal Xex.Name[] var_names; - internal Dictionary plugins; - internal Dictionary maps; - internal MPlist states; + private MText description; + internal MText title; + internal Command[] commands; + internal Xex.Symbol[] var_names; + internal Dictionary plugins; + internal Dictionary maps; + internal Dictionary states; + internal State initial_state; static MInputMethod () { - im_domain.DefSubr (Finsert, "insert", true, 1, 1); - im_domain.DefSubr (Finsert_candidates, "candidates", true, 1, -1); - im_domain.DefSubr (Fdelete, "delete", true, 1, 1); - im_domain.DefSubr (Fselect, "select", true, 1, 1); - im_domain.DefSubr (Fshow, "show", true, 0, 0); - im_domain.DefSubr (Fhide, "hide", true, 0, 0); - im_domain.DefSubr (Fmove, "move", true, 1, 1); - im_domain.DefSubr (Fmark, "mark", true, 1, 1); - im_domain.DefSubr (Fpushback, "pushback", true, 1, 1); - im_domain.DefSubr (Fpop, "pop", true, 0, 0); - im_domain.DefSubr (Fundo, "undo", true, 0, 1); - im_domain.DefSubr (Fcommit, "commit", true, 0, 0); - im_domain.DefSubr (Funhandle, "unhandle", true, 0, 0); - im_domain.DefSubr (Fshift, "shift", true, 1, 1); - im_domain.DefSubr (Fmarker, "marker", true, 1, 1); - im_domain.DefSubr (Fchar_at, "char-at", true, 1, 1); - im_domain.DefSubr (Fkeyseq, "keyseq", true, 1, -1); + im_domain.DefTerm ("keyseq", KeySeq.parser); + im_domain.DefTerm ("marker", Marker.parser); + im_domain.DefTerm ("selector", Selector.parser); + + im_domain.DefSubr (Finsert, "insert", false, 1, 1); + im_domain.DefSubr (Finsert_candidates, "insert-candidates", false, 1, -1); + im_domain.DefSubr (Fdelete, "delete", false, 1, 1); + im_domain.DefSubr (Fselect, "select", false, 1, 1); + im_domain.DefSubr (Fshow, "show", false, 0, 0); + im_domain.DefSubr (Fhide, "hide", false, 0, 0); + im_domain.DefSubr (Fmove, "move", false, 1, 1); + im_domain.DefSubr (Fmark, "mark", false, 1, 1); + im_domain.DefSubr (Fpushback, "pushback", false, 1, 1); + im_domain.DefSubr (Fpop, "pop", false, 0, 0); + im_domain.DefSubr (Fundo, "undo", false, 0, 1); + im_domain.DefSubr (Fcommit, "commit", false, 0, 0); + im_domain.DefSubr (Funhandle, "unhandle", false, 0, 0); + im_domain.DefSubr (Fshift, "shift", false, 1, 1); + im_domain.DefSubr (Fshiftback, "shiftback", false, 0, 0); + im_domain.DefSubr (Fchar_at, "char-at", false, 1, 1); + im_domain.DefSubr (Fkey_count, "key-count", false, 1, 1); + im_domain.DefSubr (Fsurrounding_flag, "surrounding-text-flag", + false, 0, 0); MDatabase.Tag tag = new MDatabase.Tag (Minput_method, "*", "*", "*"); List list = MDatabase.List (tag); @@ -838,6 +1270,7 @@ namespace M17N.Input private MInputMethod (MDatabase.Tag tag) { this.tag = tag; + domain = new Xex.Domain (tag[1].Name, im_domain, null); } // Instance Properties @@ -861,10 +1294,15 @@ namespace M17N.Input } description = this.description; title = this.title; - variables = new Xex.Variable[var_names.Length]; - int i = 0; - foreach (Xex.Name name in var_names) - variables[i++] = domain.GetVar (name); + if (var_names == null) + variables = null; + else + { + variables = new Xex.Variable[var_names.Length]; + int i = 0; + foreach (Xex.Symbol name in var_names) + variables[i++] = domain.GetVar (name, false); + } commands = this.commands; return true; } @@ -884,7 +1322,7 @@ namespace M17N.Input return (im_table.TryGetValue (tag, out im) ? im : null); } - public bool Open () + private bool Open () { return ((load_status == LoadStatus.Full) || load_body ()); } @@ -904,6 +1342,7 @@ namespace M17N.Input mdb = MDatabase.Find (tag); if (mdb == null) return false; + mdb.name_table = Xex.Symbol.Table; try { MSymbol format = mdb.Format; @@ -925,10 +1364,10 @@ namespace M17N.Input private bool load_body () { - domain = new Xex.Domain (domain, null); mdb = MDatabase.Find (tag); if (mdb == null) return false; + mdb.name_table = Xex.Symbol.Table; try { object obj = mdb.Load (); if (obj is MPlist) @@ -944,10 +1383,19 @@ namespace M17N.Input return true; } + private void add_default_state () + { + Xex.Symbol Qinit = "init"; + State state = new State (Qinit, title); + foreach (KeyValuePairkv in maps) + state.keymap.AddMap (kv.Value, null); + states[Qinit] = initial_state = state; + } + private void load (MPlist plist, bool full) { maps = new Dictionary (); - states = new MPlist (); + states = new Dictionary (); for (; ! plist.IsEmpty; plist = plist.next) if (plist.IsPlist) @@ -959,11 +1407,7 @@ namespace M17N.Input pl = pl.next; if (sym == Mdescription) - { - description = parse_description (pl); - if (description == null) - description = new MText ("No description"); - } + description = parse_description (pl); else if (sym == Mtitle) { if (pl.IsMText) @@ -992,20 +1436,12 @@ namespace M17N.Input description = (MText) "No description"; if (title == null) title = new MText (tag[2].Name); - if (variables == null) - variables = new Variable[0]; if (commands == null) commands = new Command[0]; if (! full) return; - if (states.IsEmpty) - { - State state = new State ((MSymbol) "init"); - plist = new MPlist (); - foreach (KeyValuePairkv in maps) - state.branches.Add (kv.Key, new Xex (plist, domain)); - states.Add (state.name, state); - } + if (states.Count == 0) + add_default_state (); } private void load (XmlNode node, bool full) @@ -1013,7 +1449,7 @@ namespace M17N.Input bool skip_header = load_status == LoadStatus.Header; maps = new Dictionary (); - states = new MPlist (); + states = new Dictionary (); if (node.NodeType == XmlNodeType.Document) node = node.FirstChild; @@ -1050,140 +1486,12 @@ namespace M17N.Input description = (MText) "No description"; if (title == null) title = new MText (tag[2].Name); - if (variables == null) - variables = new Variable[0]; if (commands == null) commands = new Command[0]; if (! full) return; - if (states.IsEmpty) - { - State state = new State ((MSymbol) "init"); - MPlist plist = new MPlist (); - foreach (KeyValuePairkv in maps) - state.branches.Add (kv.Key, new Xex (plist, domain)); - states.Add (state.name, state); - } - } - - private static void transform (MPlist plist) - { - for (; ! plist.IsEmpty; plist = plist.next) - { - if (plist.IsMText) - { - MPlist p = new MPlist (); - p.Add (MSymbol.symbol, Minsert); - p.Add (MSymbol.mtext, plist.Text); - plist.Set (MSymbol.plist, p); - } - else if (plist.IsInteger) - { - MPlist p = new MPlist (); - p.Add (MSymbol.symbol, Minsert); - p.Add (MSymbol.integer, plist.Integer); - plist.Set (MSymbol.plist, p); - } - else if (plist.IsPlist) - { - MPlist pl = plist.Plist; - - if (pl.IsSymbol) - { - if (pl.Symbol == Madd) - pl.Set (MSymbol.symbol, (MSymbol) "+="); - else if (pl.Symbol == Msub) - pl.Set (MSymbol.symbol, (MSymbol) "-="); - else if (pl.Symbol == Mmul) - pl.Set (MSymbol.symbol, (MSymbol) "*="); - else if (pl.Symbol == Mdiv) - pl.Set (MSymbol.symbol, (MSymbol) "/="); - else if (pl.Symbol == Minsert) - { - // (insert (CANDIDATES ...)) - // => (candidates CANDIDATES ...) - if (pl.next.IsPlist) - { - pl.Set (MSymbol.symbol, Mcandidates); - pl = pl.next; - MPlist p = pl.Plist; - pl.Set (p.key, p.val); - for (p = p.next; ! p.IsEmpty; p = p.next); - pl.Add (p.key, p.val); - } - } - else if (pl.Symbol == Mif) - { - pl = pl.next; - if (! pl.IsEmpty) - transform (pl.next); - } - else if (pl.Symbol == Mcond) - { - for (pl = pl.next; ! pl.IsEmpty; pl = pl.next) - if (pl.IsPlist) - { - MPlist p = pl.Plist; - - if (p.IsPlist) - transform (p); - else - transform (p.next); - } - } - else if (pl.Symbol == Mdelete - || pl.Symbol == Mmove - || pl.Symbol == Mmark) - { - pl = pl.next; - if (pl.IsSymbol) - { - MSymbol sym = pl.Symbol; - MPlist p = new MPlist (); - p.Add (MSymbol.symbol, Mmarker); - p.Add (MSymbol.symbol, sym); - pl.Set (MSymbol.plist, p); - } - } - else if (pl.Symbol == Mpushback) - { - pl = pl.next; - if (pl.IsPlist) - pl.Plist.Push (MSymbol.symbol, Mkeyseq); - } - } - else if (pl.IsMText) - { - // (CANDIDATES ...) => (candidates CANDIDATES ...) - pl.Push (MSymbol.symbol, Mcandidates); - } - } - else if (plist.IsSymbol) - { - MSymbol sym = plist.Symbol; - - if (sym.Name.Length >= 3 - && sym.Name[0] == '@' - && (sym.Name[1] == '-' || sym.Name[1] == '+')) - { - int pos = int.Parse (sym.Name.Substring (1)); - MPlist p = new MPlist (); - - if (pos == 0) - { - p.Add (MSymbol.symbol, Msurrounding_text_p); - } - else - { - if (sym.Name[1] == '+') - pos--; - p.Add (MSymbol.symbol, Mchar_at); - p.Add (MSymbol.integer, pos); - } - plist.Set (MSymbol.plist, p); - } - } - } + if (states.Count == 0) + add_default_state (); } private static MText parse_description (MPlist plist) @@ -1212,18 +1520,18 @@ namespace M17N.Input return node.InnerText; } - private void new_variable (Xex.Name name, string desc, int val, + private void new_variable (Xex.Symbol name, string desc, int val, MPlist pl, Xex.Variable vari) { - Xex.Term term = new Xex.Term (val); int[] range; if (pl.IsEmpty) range = null; else { - range = new int[pl.Count * 2]; - for (int i = 0; i < range.Length; i++) + int nrange = pl.Count; + range = new int[nrange * 2]; + for (int i = 0; i < nrange; i++) { if (pl.IsPlist) { @@ -1237,23 +1545,23 @@ namespace M17N.Input else if (pl.IsInteger) range[i * 2] = range[i * 2 + 1] = pl.Integer; else - throw new Exception ("Invalid range: " + p); + throw new Exception ("Invalid range: " + pl); } } if (vari == null) - domain.Defvar (new Xex.Variable.Int (name, desc, term, range)); + domain.Defvar (new Xex.Variable.Int (domain, name, desc, val, range)); else { + Xex.Term term = new Xex.Term (val); vari.Value = term; vari.DefaultValue = term; vari.Range = range; } } - private void new_variable (Xex.Name name, string desc, MText val, + private void new_variable (Xex.Symbol name, string desc, MText val, MPlist pl, Xex.Variable vari) { - Xex.Term term = new Xex.Term ((string) val); string[] range; if (pl.IsEmpty) @@ -1264,90 +1572,112 @@ namespace M17N.Input for (int i = 0; i < range.Length; i++) { if (pl.IsMText) - range[i] = pl.Text; + range[i] = (string) pl.Text; else - throw new Exception ("Invalid range: " + p); + throw new Exception ("Invalid range: " + pl); } } if (vari == null) - domain.Defvar (new Xex.Variable.Str (name, desc, term, range)); + domain.Defvar (new Xex.Variable.Str (domain, name, desc, (string) val, range)); else { + Xex.Term term = new Xex.Term ((string) val); vari.Value = term; vari.DefaultValue = term; vari.Range = range; } } - private void new_variable (Xex.Name name, string desc, MSymbol val, + private void new_variable (Xex.Symbol name, string desc, MSymbol val, MPlist pl, Xex.Variable vari) { - Xex.Term term = new Xex.Term ((Xex.Name) val.name); - Xex.Name[] range; + Xex.Symbol[] range; + Xex.Symbol sym = val.Name; if (pl.IsEmpty) range = null; else { - range = new Xex.Name[pl.Count * 2]; + range = new Xex.Symbol[pl.Count * 2]; for (int i = 0; i < range.Length; i++) { if (pl.IsSymbol) - range[i] = pl.Symbol.name; + range[i] = pl.Symbol.Name; else - throw new Exception ("Invalid range: " + p); + throw new Exception ("Invalid range: " + pl); } } if (vari == null) - domain.Defvar (new Xex.Variable.Sym (name, desc, term, range)); + domain.Defvar (new Xex.Variable.Sym (domain, name, desc, sym, range)); else { + Xex.Term term = new Xex.Term (sym); vari.Value = term; vari.DefaultValue = term; vari.Range = range; } } + private Xex.Variable get_global_var (Xex.Symbol name) + { + if (im_global == null || this != im_global) + { + tag = new MDatabase.Tag (Minput_method, MSymbol.t, MSymbol.nil, + "global"); + im_global = im_table[tag]; + if (! im_global.Open ()) + throw new Exception ("Failed to load global"); + } + return im_global.domain.GetVar (name, false); + } + private void parse_variables (MPlist plist) { - variables = new Variable[plist.Count]; + var_names = new Xex.Symbol[plist.Count]; - for (int i = 0; ! plist.IsEmpty; plist = plist.next) - if (plist.IsPlist && plist.Plist.IsSymbol) - { - MPlist p = plist.Plist; - Xex.Name name = (Name) p.Symbol.name; + for (int i = 0; ! plist.IsEmpty; i++, plist = plist.next) + { + if (! plist.IsPlist || ! plist.Plist.IsSymbol) + throw new Exception ("Invalid variable: " + plist); + + MPlist p = plist.Plist; + Xex.Symbol name = (Xex.Symbol) p.Symbol.Name; + var_names[i] = name; + p = p.next; + string desc = (string) parse_description (p); + Xex.Variable vari = get_global_var (name); + if (vari != null) + domain.Defvar (vari); + if (desc != null) p = p.next; - string desc = parse_description (p); - Xex.Variable vari = null; - Xex.Term val; - - if (im_global.domain.GetVar (name, out vari)) - domain.Defvar (vari); - if (desc != null) - p = p.next; - if (! p.IsEmpty) - { - if (p.IsInteger) - new_variable (name, desc, p.Integer, p.next, vari); - else if (p.IsMText) - new_variable (name, desc, p.Text, p.next, vari); - else if (p.IsSymbol) - new_variable (name, desc, p.Symbol, p.next, vari); - else - throw new Exception ("Unknown type: " + p.val); - } - } + if (! p.IsEmpty) + { + if (p.IsInteger) + new_variable (name, desc, p.Integer, p.next, vari); + else if (p.IsMText) + new_variable (name, desc, p.Text, p.next, vari); + else if (p.IsSymbol) + new_variable (name, desc, p.Symbol, p.next, vari); + else + throw new Exception ("Invalid variable type: " + p.val); + } + } } private void parse_variables (XmlNode node) { XmlNodeList node_list = node.ChildNodes; - variables = new Variable[node_list.Count]; + var_names = new Xex.Symbol[node_list.Count]; for (int i = 0; i < node_list.Count; i++) - if (node_list[i].NodeType == XmlNodeType.Element) - variables[i] = new Variable (node_list[i]); + { + Xex.Symbol name = node_list[i].Attributes[0].Value; + Xex.Variable vari = get_global_var (name); + if (vari != null) + domain.Defvar (vari); + domain.Defvar (node_list[i]); + var_names[i] = name; + } } private void parse_commands (MPlist plist) @@ -1379,13 +1709,13 @@ namespace M17N.Input { MPlist p = plist.Plist; MSymbol sym = p.Symbol; - Plugin plugin = new Plugin (); + Plugin plugin = new Plugin (sym.Name); - plugin.name = sym.Name; - plugin.methods = new MPlist (); for (p = p.next; ! p.IsEmpty; p = p.next) - plugin.methods.Add (p.Symbol, null); - plugins.Add (sym, plugin); + { + Xex.Function func = new PluginMethod (plugin, p.Symbol.Name); + domain.Defun (func); + } } } @@ -1395,58 +1725,69 @@ namespace M17N.Input foreach (XmlNode n in node.ChildNodes) { - Plugin plugin = new Plugin (); - plugin.name = n.Attributes["id"].Value; - plugin.methods = new MPlist (); + Plugin plugin = new Plugin (n.Attributes[0].Value); foreach (XmlNode nn in n.ChildNodes) - plugin.methods.Add ((MSymbol) nn.Attributes["id"].Value, - null); - plugins.Add (plugin.name, plugin); + { + Xex.Function func = new PluginMethod (plugin, + nn.Attributes[0].Value); + domain.Defun (func); + } } } private void parse_macros (XmlNode node) { for (XmlNode nn = node.FirstChild; nn != null; nn = nn.NextSibling) - if (nn.NodeType == XmlNodeType.Element - && nn.Name == "xi:include") - { - XmlNode n = nn.FirstChild.FirstChild; - MSymbol language = n.InnerText; - n = n.NextSibling; - MSymbol name = n.InnerText; - n = n.NextSibling; - MSymbol subname = (n != null ? n.InnerText : MSymbol.nil); - n = n.ParentNode.NextSibling; - MSymbol section = n.InnerText; - n = n.NextSibling; - MSymbol id = (n != null ? n.InnerText : MSymbol.nil); - - MInputMethod im = MInputMethod.Find (language, name, subname); - if (im == null || ! im.Open ()) - continue; - if (id == MSymbol.nil) - im.domain.CopyFunc (domain); - else - im.domain.CopyFunc (domain, id); - } - for (XmlNode nn = node.FirstChild; nn != null; nn = nn.NextSibling) - if (nn.NodeType == XmlNodeType.Element - && nn.Name != "xi:include") - domain.Defun ((MSymbol) node.GetAttribute ("id")); + if (nn.NodeType == XmlNodeType.Element) + domain.Defun (nn, true); for (XmlNode nn = node.FirstChild; nn != null; nn = nn.NextSibling) - if (nn.NodeType == XmlNodeType.Element - && nn.Name != "xi:include") - domain.Defun ((MSymbol) node.GetAttribute ("id"), null, - nn.FirstChild); + if (nn.NodeType == XmlNodeType.Element) + domain.Defun (nn, false); } private void parse_maps (XmlNode node) { + for (node = node.FirstChild; node != null; node = node.NextSibling) + if (node.Name == Qmap) + { + MSymbol name = node.Attributes[0].Value; + Map map = new Map (name); + maps[name] = map; + for (XmlNode nd = node.FirstChild; nd != null; nd = nd.NextSibling) + if (nd.Name == Qrule) + { + XmlNode n = nd.FirstChild; + if (n.Name != Qkeyseq) + continue; + KeySeq keyseq = (KeySeq) KeySeq.parser (domain, n); + Xex.Term[] actions = Xex.ParseTerms (domain, n.NextSibling); + map.entries.Add (new Map.Entry (domain, keyseq, actions)); + } + } + } + + private void parse_states (MPlist plist) + { + for (; ! plist.IsEmpty; plist = plist.next) + if (plist.IsPlist) + { + State state = new State (this, plist.Plist); + states[state.name] = state; + if (initial_state == null) + initial_state = state; + } } private void parse_states (XmlNode node) { + for (node = node.FirstChild; node != null; node = node.NextSibling) + if (node.Name == Qstate) + { + State state = new State (this, node); + states[state.name] = state; + if (initial_state == null) + initial_state = state; + } } private void parse_include (MPlist plist) @@ -1487,7 +1828,7 @@ namespace M17N.Input if (target_name == MSymbol.nil) im.domain.CopyFunc (domain); else - im.domain.CopyFunc (domain, target_name); + im.domain.CopyFunc (domain, (Xex.Symbol) target_name.Name); } else if (target_type == Mmap) { @@ -1507,16 +1848,190 @@ namespace M17N.Input { if (target_name == MSymbol.nil) { - for (p = im.states; ! p.IsEmpty; p = p.next) - states.Add (p.key, p.val); + foreach (KeyValuePair kv in im.states) + states[kv.Key] = kv.Value; + } + else + { + Xex.Symbol state_name = target_name.Name; + State state; + if (im.states.TryGetValue (state_name, out state)) + states[state_name] = state; + } + } + } + + private Xex.Term parse_cond (MPlist plist) + { + Xex.Term[] args = new Xex.Term[plist.Count]; + + for (int i = 0; ! plist.IsEmpty; i++, plist = plist.next) + { + if (! plist.IsPlist) + throw new Exception ("Invalid cond args: " + plist); + MPlist p = plist.Plist; + List arg = new List (); + arg.Add (parse_action (p, true)); + for (p = p.next; ! p.IsEmpty; p = p.next) + arg.Add (parse_action (p, false)); + args[i] = new Xex.Term (arg); + } + return new Xex.Term (domain, Qcond, args); + } + + private Xex.Term parse_insert (MPlist plist) + { + Xex.Term[] args; + Xex.Term arg; + if (plist.IsSymbol) + arg = new Xex.Term (domain, (Xex.Symbol) plist.Symbol.Name); + else if (plist.IsMText) + arg = new Xex.Term ((string) plist.Text); + else if (plist.IsInteger) + arg = new Xex.Term (plist.Integer); + else if (plist.IsPlist) + { + MPlist pl = plist.Plist; + + args = new Xex.Term[pl.Count]; + int i; + for (i = 0; ! pl.IsEmpty; i++, pl = pl.next) + { + if (pl.IsMText) + args[i] = new Xex.Term ((string) pl.Text); + else if (pl.IsPlist) + { + List list = new List (); + for (MPlist p = pl.Plist; ! p.IsEmpty; p = p.next) + { + if (p.IsMText) + list.Add (new Xex.Term ((string) p.Text)); + else + throw new Exception ("Invalid candidates: " + p); + } + } + else + throw new Exception ("Invalid candidates: " + pl); + } + return new Xex.Term (domain, Qinsert_candidates, args); + } + else + throw new Exception ("Invalid arg to insert: " + plist); + args = new Xex.Term[1]; + args[0] = arg; + return new Xex.Term (domain, Qinsert, args); + } + + private Xex.Term parse_select (MPlist plist) + { + Xex.Term[] args = new Xex.Term[1]; + if (plist.IsInteger) + args[0] = new Xex.Term (plist.Integer); + else if (! plist.IsSymbol) + throw new Exception ("Invalid arg to select: " + plist); + else if (plist.Symbol.Name[0] == '@') + args[0] = new Xex.Term (Selector.Get (plist.Symbol)); + else + args[0] = new Xex.Term (domain, (Xex.Symbol) plist.Symbol.Name); + return new Xex.Term (domain, Qselect, args); + } + + private Xex.Term parse_funcall_with_marker (MPlist plist, Xex.Symbol func) + { + Xex.Term[] args = new Xex.Term[1]; + if (plist.IsInteger && func != Qmark) + args[0] = new Xex.Term (plist.Integer); + else if (plist.IsSymbol) + args[0] = new Xex.Term (Marker.Get (plist.Symbol)); + else + throw new Exception ("Invalid arg to " + func + ": " + plist); + return new Xex.Term (domain, func, args); + } + + private Xex.Term parse_char_at (MSymbol name) + { + Xex.Term[] args = new Xex.Term[1]; + args[0] = new Xex.Term (Marker.Get (name)); + return new Xex.Term (domain, Qchar_at, args); + } + + private Xex.Term parse_shift (MPlist plist) + { + Xex.Term[] args = new Xex.Term[1]; + if (! plist.IsSymbol) + throw new Exception ("Invalid arg to shift: " + plist); + args[0] = new Xex.Term ((Xex.Symbol) plist.Symbol.Name); + return new Xex.Term (domain, Qshift, args); + } + + private Xex.Term parse_action (MPlist plist, bool as_funarg) + { + if (plist.IsPlist) + { + MPlist p = plist.Plist; + + if (p.IsMText || p.IsPlist) + return parse_insert (plist); + if (! p.IsSymbol) + throw new Exception ("Invalid action: " + p); + MSymbol sym = p.Symbol; + Xex.Symbol name = sym.Name; + p = p.next; + if (name == Qcond) + return parse_cond (p); + if (name == Qinsert) + return parse_insert (p); + if (name == Qselect) + return parse_select (p); + if (name == Qdelete || name == Qmove || name == Qmark) + return parse_funcall_with_marker (p, name); + if (name == Qshift) + return parse_shift (p); + if (((string) name)[0] == '@') + return parse_char_at (sym); + if (name == Qset || name == Qadd || name == Qsub + || name == Qmul || name == Qdiv) + { + if (! p.IsSymbol) + throw new Exception ("Invalid action: " + p); + Xex.Symbol varname = p.Symbol.Name; + Xex.Term[] args = new Xex.Term[1]; + args[0] = parse_action (p.next, true); + return new Xex.Term (domain, name, varname, args); } else { - object state = im.states.Get (target_name); - if (state != null) - states.Add (target_name, state); + if (name == Qeq) + name = Qeqeq; + if (p.IsEmpty) + return new Xex.Term (domain, name, null); + else + return new Xex.Term (domain, name, parse_actions (p, true)); } } + else if (plist.IsSymbol) + { + if (plist.Symbol.Name[0] == '@') + return parse_char_at (plist.Symbol); + return new Xex.Term (domain, (Xex.Symbol) plist.Symbol.Name); + } + else if (plist.IsMText) + return (as_funarg ? new Xex.Term ((string) plist.Text) + : parse_insert (plist)); + else if (plist.IsInteger) + return (as_funarg ? new Xex.Term (plist.Integer) + : parse_insert (plist)); + else + throw new Exception ("Invalid action: " + plist); + } + + private Xex.Term[] parse_actions (MPlist plist, bool as_funarg) + { + Xex.Term[] terms = new Xex.Term[plist.Count]; + + for (int i = 0; ! plist.IsEmpty; i++, plist = plist.next) + terms[i] = parse_action (plist, as_funarg); + return terms; } private void parse_macros (MPlist plist) @@ -1528,7 +2043,7 @@ namespace M17N.Input if (! p.IsSymbol) continue; - domain.Defun (p.Symbol, null, null); + domain.Defun ((Xex.Symbol) p.Symbol.Name, null, null, true); } for (MPlist pl = plist; ! pl.IsEmpty; pl = pl.next) if (pl.IsPlist) @@ -1537,8 +2052,8 @@ namespace M17N.Input if (! p.IsSymbol) continue; - transform (p.next); - domain.Defun (p.Symbol, null, p.next); + domain.Defun ((Xex.Symbol) p.Symbol.Name, null, + parse_actions (p.next, false), false); } } @@ -1551,9 +2066,8 @@ namespace M17N.Input if (! pl.IsSymbol) continue; - Map map = new Map (); - map.name = pl.Symbol; - maps[map.name] = map; + Map map = new Map (pl.Symbol); + maps[pl.Symbol] = map; for (pl = pl.next; ! pl.IsEmpty; pl = pl.next) { if (! pl.IsPlist) @@ -1567,56 +2081,20 @@ namespace M17N.Input else continue; p = p.next; - if (p.IsEmpty) - continue; - transform (p); - MXex expr = new MXex (p, domain); - map.Add (keys, 0, expr); + Xex.Term[] actions + = p.IsEmpty ? null : parse_actions (p, false); + map.entries.Add (new Map.Entry (domain, keys, actions)); } } } - private void parse_states (MPlist plist) + private static Xex.Term Finsert (Xex.Domain domain, Xex.Variable vari, + Xex.Term[] args) { - for (; ! plist.IsEmpty; plist = plist.next) - if (plist.IsPlist) - { - MPlist pl = plist.Plist; - MText title = null; - - if (pl.IsMText) - { - title = pl.Text; - pl = pl.next; - } - if (! pl.IsSymbol) - continue; - - State state = new State (pl.Symbol); - state.title = title; - if (states == null) - states = new MPlist (); - states.Add (state.name, state); - for (pl = pl.next; ! pl.IsEmpty; pl = pl.next) - { - if (! pl.IsPlist) - continue; - MPlist p = pl.Plist; - if (! p.IsSymbol) - continue; - MSymbol map_name = p.Symbol; - p = p.next; - transform (p); - state.branches.Add (map_name, - new MXex (p, domain)); - } - } - } - - private static Xex.Term Finsert (Xex.Domain domain, Xex.Variable vari, - Xex.Term[] args) - { - ((MInputContext) domain.context).insert (args[0]); + if (args[0].IsInt) + ((Context) domain.context).insert (args[0].Intval, null); + else + ((Context) domain.context).insert ((MText) args[0].Strval, null); return args[0]; } @@ -1624,81 +2102,106 @@ namespace M17N.Input Xex.Variable vari, Xex.Term[] args) { - ((MInputContext) domain.context).insert_candidates (args[0]); + Context ic = (Context) domain.context; + Xex.Variable v = ic.domain.GetVar (Qcandidates_group_size, false); + int column = (v == null ? 0 : v.Value.Intval); + Candidates candidates = new Candidates (args, column); + object candidate = candidates.Current; + + if (candidate is MText) + ic.insert ((MText) candidate, candidates); + else + ic.insert ((int) candidate, candidates); return args[0]; } - private static Xex.Term Fmarker (Xex.Domain domain, Xex.Variable vari, - Xex.Term[] args) + private static Xex.Term Fchar_at (Xex.Domain domain, Xex.Variable vari, + Xex.Term[] args) { - MSymbol sym = (MSymbol) args[0].Args[0].Val; + Context ic = (Context) domain.context; + Marker m = (Marker) args[0].Objval; - return ((MInputContext) domain.context).marker (sym); + return new Xex.Term (m.CharAt (ic)); } - private static Xex.Term char_at (Xex.Domain domain, Xex.Variable vari, + private static Xex.Term Fdelete (Xex.Domain domain, Xex.Variable vari, Xex.Term[] args) { - return ((MInputContext) domain.context).char_at ((int) args[0].Val); - } + Context ic = (Context) domain.context; + int pos; - private static Xex.Term Fdelete (Xex.Domain domain, Xex.Variable vari, - Xex.Term[] args) - { - ((MInputContext) domain.context).delete ((int) args[0].Intval); - return true; + if (args[0].IsInt) + pos = args[0].Intval; + else + { + Marker m = (Marker) args[0].Objval; + pos = m.Position (ic); + } + return new Xex.Term (ic.delete (pos)); } private static Xex.Term Fselect (Xex.Domain domain, Xex.Variable vari, - Xex.Term[] args) + Xex.Term[] args) { - MInputContext ic = (MInputContext) domain.context; + Context ic = (Context) domain.context; + Candidates can = ic.candidates; - if (args[0].IsInt) - ic.select (args[0].Intval); - else - ic.select ((MSYmbol) ((string) args[0].Nameval)); + if (can != null) + { + object candidate = can.Current; + + if (candidate is MText) + ic.delete (ic.cursor_pos - ((MText) candidate).Length); + else + ic.delete (ic.cursor_pos - 1); + if (args[0].IsInt) + candidate = can.Select (args[0].Intval); + else + candidate = can.Select ((Selector) args[0].Objval); + if (candidate is MText) + ic.insert ((MText) candidate, can); + else + ic.insert ((int) candidate, can); + } return args[0]; } private static Xex.Term Fshow (Xex.Domain domain, Xex.Variable vari, - Xex.Term[] args) + Xex.Term[] args) { - ((MInputContext) domain.context).show (); - return Xex.Zero; + ((Context) domain.context).show (); + return Tnil; } private static Xex.Term Fhide (Xex.Domain domain, Xex.Variable vari, - Xex.Term[] args) + Xex.Term[] args) { - ((MInputContext) domain.context).hide (); - return Xex.Zero; + ((Context) domain.context).hide (); + return Tnil; } private static Xex.Term Fmove (Xex.Domain domain, Xex.Variable vari, - Xex.Term[] args) + Xex.Term[] args) { - ((MInputContext) domain.context).move (args[0].Intval); + Context ic = (Context) domain.context; + int pos = (args[0].IsInt ? args[0].Intval + : ((Marker) args[0].Objval).Position (ic)); + ic.move (pos); return args[0]; } private static Xex.Term Fmark (Xex.Domain domain, Xex.Variable vari, Xex.Term[] args) { - ((MInputContext) domain.context).mark ((Marker) args[0].Objval); + Marker m = (Marker) args[0].Objval; + m.Mark ((Context) domain.context); return args[0]; } - private static Xex.Term Fkeyseq (Xex.Domain domain, Xex.Variable vari, - Xex.Term[] args) - { - return new KeySeq (args); - } - private static Xex.Term Fpushback (Xex.Domain domain, Xex.Variable vari, - Xex[] args) + Xex.Term[] args) { - MInputContext ic = (MInputContext) domain.context; + Context ic = (Context) domain.context; if (args[0].IsInt) ic.pushback (args[0].Intval); @@ -1712,43 +2215,69 @@ namespace M17N.Input private static Xex.Term Fpop (Xex.Domain domain, Xex.Variable vari, Xex.Term[] args) { - ((MInputContext) domain.context).pop (); - return Xex.Zero; + ((Context) domain.context).pop (); + return Tnil; } private static Xex.Term Fundo (Xex.Domain domain, Xex.Variable vari, Xex.Term[] args) { int n = args.Length == 0 ? -2 : args[0].Intval; - ((MInputContext) domain.context).undo (n); - return Xex.Zero; + ((Context) domain.context).undo (n); + return Tnil; } private static Xex.Term Fcommit (Xex.Domain domain, Xex.Variable vari, Xex.Term[] args) { - ((MInputContext) domain.context).commit (); - return Xex.Zero; + ((Context) domain.context).commit (); + return Tnil; } private static Xex.Term Funhandle (Xex.Domain domain, Xex.Variable vari, Xex.Term[] args) { - ((MInputContext) domain.context).commit (); + ((Context) domain.context).commit (); args = new Xex.Term[2]; - args[0] = args[1] = catch_tag; + args[0] = args[1] = Tcatch_tag; return Xex.Fthrow (domain, vari, args); } private static Xex.Term Fshift (Xex.Domain domain, Xex.Variable vari, Xex.Term[] args) { - ((MInputContext) domain.context).shift (args[0].Symval); + Context ic = (Context) domain.context; + State state; + if (ic.im.states.TryGetValue (args[0].Symval, out state)) + ((Context) domain.context).shift (state); + else + throw new Exception ("Unknown state: " + args[0].Symval); return args[0]; } + private static Xex.Term Fshiftback (Xex.Domain domain, Xex.Variable vari, + Xex.Term[] args) + { + ((Context) domain.context).shift (null); + return Tnil; + } + + private static Xex.Term Fkey_count (Xex.Domain domain, Xex.Variable vari, + Xex.Term[] args) + { + return new Xex.Term (((Context) domain.context).key_head); + } + + private static Xex.Term Fsurrounding_flag (Xex.Domain domain, + Xex.Variable vari, + Xex.Term[] args) + { + return new Xex.Term (GetSurroundingText == null ? 0 : 1); + } + public override string ToString () { + this.Open (); string str = (String.Format ("({0} (title \"{1}\")", tag, title)); if (commands != null) { @@ -1757,10 +2286,10 @@ namespace M17N.Input str += " " + cmd; str += ")"; } - if (variables != null) + if (var_names != null) { str += " (variables"; - foreach (Variable var in variables) + foreach (Xex.Symbol var in var_names) str += " " + var; str += ")"; } @@ -1775,712 +2304,531 @@ namespace M17N.Input foreach (KeyValuePair kv in maps) str += " " + kv.Value; str += ") (states"; - foreach (MPlist p in states) - str += " " + p.val; + foreach (KeyValuePair kv in states) + { + str += " (" + kv.Key + " " + kv.Value.keymap + ")"; + } return str + "))"; } - } - - public class MInputContext - { - internal static MSymbol Mcandidates_group_size = "candidates-group-size"; - private static MSymbol Mat_less_than = "@<"; - private static MSymbol Mat_greater_than = "@>"; - private static MSymbol Mat_minus = "@-"; - private static MSymbol Mat_plus = "@+"; - private static MSymbol Mat_open_square_bracket = "@["; - private static MSymbol Mat_close_square_bracket = "@]"; - - public MInputMethod im; - private MText produced; - private bool active; - private MText status; - private bool status_changed; - private MText preedit; - private bool preedit_changed; - private int cursor_pos; - private bool cursor_pos_changed; - private Candidates candidates; - private MPlist candidate_group; - private int candidate_index; - private int candidate_from, candidate_to; - private bool candidate_show; - private bool candidate_changed; - - private Stack states; - internal MInputMethod.KeySeq keys; - private int key_head; - private int state_key_head; - private MPlist state_boundary; - private int commit_key_head; - private MText state_preedit; - private int state_pos; - internal MPlist markers = new MPlist (); - private MPlist vars; - private MPlist vars_saved; - internal MText preceding_text = new MText (); - internal MText following_text = new MText (); - private bool key_unhandled; - - internal Xex.Domain domain; - public MInputContext (MInputMethod im) + public class Context { - this.im = im; - domain = new Xex.Domain (im.domain, this); - states = new Stack (); - states.Push ((MInputMethod.State) im.states.val); - keys = new MInputMethod.KeySeq (); - } + internal MInputMethod im; + internal Xex.Domain domain; + private bool active; - private void adjust_markers (int from, int to, object inserted) - { - int ins = (inserted == null ? 0 - : inserted is int ? 1 - : ((MText) inserted).Length); - int diff = ins - (to - from); + private MText status; + private MText produced = new MText (); + internal MText preedit = new MText (); + internal int cursor_pos; + internal MPlist marker_positions = new MPlist (); - for (MPlist plist = markers; ! plist.IsEmpty; plist = plist.next) - { - int pos = plist.Integer; - if (pos > from) - { - if (pos >= to) - plist.val = pos + diff; - else - plist.val = from; - } - } - if (cursor_pos >= to) - cursor_pos += diff; - else if (cursor_pos > from) - cursor_pos = from; - } + internal Candidates candidates; + private bool candidate_show; + public bool CandidateShow { get { return candidate_show; } } - private void preedit_replace (int from, int to, int c) - { - preedit.Del (from, to); - preedit.Ins (from, c); - adjust_markers (from, to, c); - } + private State state, prev_state; + private MText state_preedit = new MText (); + private int state_key_head; + private object state_var_values, state_initial_var_values; + private int state_pos; - private void preedit_replace (int from, int to, MText mt) - { - preedit[from, to] = mt; - adjust_markers (from, to, mt); - } + private Keymap keymap; + // Sequence of input keys. + internal KeySeq keys = new KeySeq (); + // Index into KEYS specifying the next key to handle. + internal int key_head; - internal void insert (Xex.Term arg) - { - if (arg.IsInt is int) - preedit_replace (cursor_pos, cursor_pos, arg.Intval); - else - preedit_replace (cursor_pos, cursor_pos, new MText (arg.Strval)); - preedit_changed = true; - cursor_pos_changed = true; - } + internal MText preceding_text = new MText (); + internal MText following_text = new MText (); - private class Candidates - { - private class Block - { - public int Index; - public object Data; + // Set to false before calling the method 'handle_key', and set + // to true when some key is unhandled. + private bool key_unhandled; - public Block (int index, MPlist plist) - { - Index = index; - if (plist.IsMText) - Data = plist.Text; - else - Data = plist.Plist; - } + // The unhandled key. It has the meaning only when + // 'key_unhandled' is true. + private Key unhandled_key; - public int Count - { - get { return (Data is MText - ? ((MText) Data).Length - : ((MPlist) Data).Count); } - } + internal ChangedStatus changed; - public object this[int i] - { - get { - if (Data is MText) return ((MText) Data)[i]; - return ((MPlist) Data)[i]; - } - } + private void set_cursor (string prefix, int pos) + { + cursor_pos = pos; + if (cursor_pos > 0) + candidates = (Candidates) preedit.GetProp (cursor_pos - 1, + Mcandidates); + else + candidates = null; } - private Block[] blocks; - private int row = 0; - private int index = 0; - public object[] group; + internal void reset () + { + status = im.initial_state.title; + produced.Del (); + preedit.Del (); - private bool IsFixed { get { return group != null; } } - private int Total { - get { - Block last = blocks[blocks.Length - 1]; - return last.Index + last.Count; } - } + set_cursor ("reset", 0); + marker_positions.Clear (); + candidates = null; + candidate_show = false; - public int Column { - get { return (IsFixed ? index % group.Length - : index - blocks[row].Index); } - } + state = prev_state = null; + state_preedit.Del (); + state_var_values = state_initial_var_values; + state_pos = 0; + shift (im.initial_state); + + preceding_text.Del (); + following_text.Del (); - public object Group { - get { return (IsFixed ? group : blocks[row].Data); } + changed = ChangedStatus.None; } - public int GroupLength + static Xex.Term[] catch_args = new Xex.Term[2]; + + private bool take_actions (Xex.Term[] actions) { - get { - if (IsFixed) - { - int nitems = group.Length; - int start = index - (index % nitems); - int total = Total; - return (start + nitems <= total ? nitems : total - start); - } - return blocks[row].Count; - } + catch_args[0] = Tcatch_tag; + catch_args[1]= new Xex.Term (domain, Qprogn, actions); + Xex.Term term = new Xex.Term (domain, Qcatch, catch_args); + term = term.Eval (domain); + return (! term.IsSymbol || term.Symval != Tcatch_tag.Symval); } - public object Current { - get { - return (IsFixed ? group[index % group.Length] - : blocks[row][index - blocks[row].Index]); - } + static MPlist callback_arg = new MPlist (); + + private bool get_surrounding_text (int len) + { + if (len < 0 ? -len <= preceding_text.Length + : len <= following_text.Length) + return true; + if (GetSurroundingText == null) + return false; + callback_arg.Set (MSymbol.integer, len); + if (! GetSurroundingText (this, callback_arg) + || ! callback_arg.IsMText) + return false; + if (len < 0) + { + preceding_text = callback_arg.Text; + return (-len <= preceding_text.Length); + } + following_text = callback_arg.Text; + return (len <= following_text.Length); } - public Candidates (MPlist list, int column) + internal int GetSurroundingChar (int pos) + { + if (! get_surrounding_text (pos < 0 ? pos : pos + 1)) + return 0; + if (pos < 0) + return preceding_text[preceding_text.Length + pos]; + return following_text[pos]; + } + + private void adjust_markers (int from, int to, int inserted) { - int nblocks = list.Count; + int diff = inserted - (to - from); - blocks = new Block[nblocks]; - for (int i = 0, start = 0; i < nblocks; i++, list = list.next) - start += (blocks[i] = new Block (index, list)).Count; - if (column > 0) - group = new object[column]; + for (MPlist p = marker_positions; ! p.IsEmpty; p = p.next) + { + int pos = p.Integer; + if (pos > from) + p.Set (p.Key, pos >= to ? pos + diff : from); + } + if (cursor_pos >= to) + set_cursor ("adjust", cursor_pos + diff); + else if (cursor_pos > from) + set_cursor ("adjust", from); } - public Candidates (List list, int column) + private void preedit_replace (int from, int to, int c, + Candidates candidates) { - int nblocks = list.Count; + preedit.Del (from, to); + preedit.Ins (from, c); + if (candidates != null) + { + preedit.PushProp (from, from + 1, Mcandidates, candidates); + changed |= (ChangedStatus.Preedit | ChangedStatus.CursorPos + | CandidateAll); + } + adjust_markers (from, to, 1); + } - blocks = new Block[nblocks]; - for (int i = 0, start = 0; i < nblocks; i++) - start += (blocks[i] = new Block (index, list[i])).Count; - if (column > 0) - group = new object[column]; + private void preedit_replace (int from, int to, MText mt, + Candidates candidates) + { + preedit[from, to] = mt; + if (candidates != null) + { + preedit.PushProp (from, from + mt.Length, Mcandidates, candidates); + changed |= (ChangedStatus.Preedit | ChangedStatus.CursorPos + | CandidateAll); + } + adjust_markers (from, to, mt == null ? 0 : mt.Length); } - public static void Detach (MInputContext ic) + internal void insert (int c, Candidates candidates) { - ic.preedit.PopProp (0, ic.preedit.Length, MInputMethod.Mcandidates); - ic.candidates = null; - ic.preedit_changed = true; - ic.cursor_pos_changed = true; - ic.candidate_changed = true; + preedit_replace (cursor_pos, cursor_pos, c, candidates); + changed |= ChangedStatus.Preedit | ChangedStatus.CursorPos; } - // Fill the array "group" by candidates stating from INDEX. - // INDEX must be a multiple of "column". Set NTIMES to the - // number of valid candidates in "group". Update "block" if - // necessary. Return "group". + internal void insert (MText mt, Candidates candidates) + { + preedit_replace (cursor_pos, cursor_pos, mt, candidates); + changed |= ChangedStatus.Preedit | ChangedStatus.CursorPos; + } - private int fill_group (int start) + internal int delete (int pos) { - int nitems = group.Length; - int r = row; - Block b = blocks[r]; + int deleted = pos - cursor_pos; - if (start < b.Index) - while (start < b.Index) - b = blocks[--r]; + if (pos < cursor_pos) + { + if (pos < 0) + { + if (DeleteSurroundingText != null) + { + callback_arg.Set (MSymbol.integer, pos); + if (DeleteSurroundingText (this, callback_arg)) + { + if (callback_arg.IsInteger) + deleted = callback_arg.Integer - cursor_pos; + preceding_text.Del (); + } + else + deleted = - cursor_pos; + } + pos = 0; + } + if (pos < cursor_pos) + preedit_replace (pos, cursor_pos, null, null); + } else - while (start >= b.Index + b.Count) - b = blocks[++r]; - row = r; - - int count = b.Count; - start -= b.Index; - for (int i = 0; i < nitems; i++, start++) { - if (start >= count) + if (pos > preedit.Length) { - r++; - if (r == blocks.Length) - return i; - b = blocks[r]; - count = b.Count; - start = 0; + if (DeleteSurroundingText != null) + { + callback_arg.Set (MSymbol.integer, pos - preedit.Length); + if (DeleteSurroundingText (this, callback_arg)) + { + if (callback_arg.IsInteger) + deleted = callback_arg.Integer - cursor_pos; + preceding_text.Del (); + } + else + deleted = preedit.Length - cursor_pos; + } + pos = preedit.Length; } - group[i] = b[start]; + if (pos > cursor_pos) + preedit_replace (cursor_pos, pos, null, null); } - return nitems; + if (deleted != 0) + changed |= ChangedStatus.Preedit | ChangedStatus.CursorPos; + return deleted; } - // Update "row" to what contains the first candidate of - // the previous candidate-group, update "current_index", and - // update "group" if necessary. Return the previous - // candidate-group. Set NITEMS to the number of valid - // candidates contained in that group. + internal void show () + { + candidate_show = true; + changed |= ChangedStatus.CandidateShow; + } - public int PrevGroup () + internal void hide () { - int nitems; - int col = Column; + candidate_show = false; + changed |= ChangedStatus.CandidateShow; + } - if (IsFixed) - { - nitems = group.Length; - if ((index -= col + nitems) < 0) - index = (Total / nitems) * nitems; - nitems = fill_group (index); - } - else + internal void move (int pos) + { + if (pos < 0) + pos = 0; + else if (pos > preedit.Length) + pos = preedit.Length; + if (pos != cursor_pos) { - row = row > 0 ? row-- : blocks.Length - 1; - nitems = blocks[row].Count; - index = blocks[row].Index; + set_cursor ("move", pos); + changed |= ChangedStatus.Preedit; } - index += col < nitems ? col : nitems - 1; - return nitems; } - public int NextGroup () + internal void pushback (int n) { - int nitems; - int col = Column; - - if (IsFixed) + if (n > 0) { - nitems = group.Length; - if ((index += nitems - col) >= Total) - index = 0; - nitems = fill_group (index); + key_head -= n; + if (key_head < 0) + key_head = 0; } + else if (n == 0) + key_head = 0; else { - row = row < blocks.Length - 1 ? row + 1 : 0; - nitems = blocks[row].Count; - index = blocks[row].Count; + key_head = - n; + if (key_head > keys.keyseq.Count) + key_head = keys.keyseq.Count; } - index += col < nitems ? col : nitems - 1; - return nitems; } - public void Prev () + internal void pushback (KeySeq keyseq) { - int col = Column; + if (key_head > 0) + key_head--; + if (key_head < keys.keyseq.Count) + keys.keyseq.RemoveRange (key_head, keys.keyseq.Count - key_head); + for (int i = 0; i < keyseq.keyseq.Count; i++) + keys.keyseq.Add (keyseq.keyseq[i]); + } - if (col == 0) - { - int nitems = PrevGroup (); - index += col < nitems - 1 ? col : nitems - 1; - } + internal void pop () + { + if (key_head < keys.keyseq.Count) + keys.keyseq.RemoveRange (key_head, 1); + } + + internal void undo (int n) + { + if (n < 0) + keys.keyseq.RemoveRange (keys.keyseq.Count + n, - n); else - index--; + keys.keyseq.RemoveRange (n, keys.keyseq.Count - n); + reset (); } - public void Next () + internal void commit () { - int col = Column; - int nitems = GroupLength; + produced.Cat (preedit); + preedit_replace (0, preedit.Length, null, null); + changed |= ChangedStatus.Preedit; + } - if (col == nitems - 1) + internal void shift (State state) + { + if (state == null) { - nitems = NextGroup (); - index -= Column; + if (prev_state == null) + return; + state = prev_state; + } + + if (state == im.initial_state) + { + commit (); + keys.keyseq.RemoveRange (0, key_head); + key_head = 0; + if (state != this.state) + { + domain.RestoreValues (state_initial_var_values); + if (state.enter_actions != null) + take_actions (state.enter_actions); + } + prev_state = null; } else - index++; + { + if (state != this.state && state.enter_actions != null) + take_actions (state.enter_actions); + prev_state = this.state; + } + save_state (); + if (this.state == null || this.state.title != state.title) + this.changed |= ChangedStatus.StateTitle; + this.state = state; + keymap = state.keymap; } - public void First () + public Context (MInputMethod im) { - index -= Column; + if (im.load_status != LoadStatus.Full + && ! im.Open ()) + throw new Exception ("Openging " + im.tag + " failed"); + this.im = im; + domain = new Xex.Domain ("context", im.domain, this); + state_initial_var_values = domain.SaveValues (); + reset (); + active = true; + if (PreeditChanged != null) + { + callback_arg.Set (MSymbol.mtext, preedit); + PreeditChanged (this, callback_arg); + } + if (StatusChanged != null) + { + callback_arg.Set (MSymbol.mtext, status); + StatusChanged (this, callback_arg); + } } - public void Last () + public ChangedStatus Changed { get { return changed; } } + + internal object GetCandidates (out int column) { - index += GroupLength - (Column + 1); + column = 0; + if (cursor_pos == 0) + return null; + Candidates candidates + = (Candidates) preedit.GetProp (cursor_pos - 1, Mcandidates); + if (candidates == null) + return null; + column = candidates.Column; + return candidates.Current; } - public void Select (int col) + private void save_state () { - int maxcol = GroupLength - 1; - if (col > maxcol) - col = maxcol; - index = index - Column + col; + state_var_values = domain.SaveValues (); + state_preedit.Del (); + state_preedit.Ins (0, preedit); + state_key_head = key_head; + state_pos = cursor_pos; } - } - - private void update_candidate () - { - object candidate = candidates.Current; - - if (candidate is MText) - { - preedit_replace (candidate_from, candidate_to, (MText) candidate); - candidate_to = candidate_from + ((MText) candidate).Length; - } - else - { - preedit_replace (candidate_from, candidate_to, (int) candidate); - candidate_to = candidate_from + 1; - } - preedit.PushProp (candidate_from, candidate_to, - MInputMethod.Mcandidates, this); - cursor_pos = candidate_from; - preedit_changed = true; - cursor_pos_changed = true; - candidate_changed = true; - } - - internal void insert_candidates (Xex.Term arg) - { - int column = 0; - - if (domain.IsBound (Mcandidates_group_size)) - { - object val = domain.GetValue (Mcandidates_group_size); - if (val is int) - column = (int) val; - } - candidates = new Candidates (arg.Listval, column); - candidate_from = candidate_to = cursor_pos; - update_candidate (); - } - - internal void select (int n) - { - if (candidates != null) - { - candidates.Select (n); - update_candidate (); - } - } - - internal void select (MSymbol sym) - { - if (candidates != null) - { - if (sym == Mat_less_than) - candidates.First (); - else if (sym == Mat_greater_than) - candidates.Last (); - else if (sym == Mat_minus) - candidates.Prev (); - else if (sym == Mat_plus) - candidates.Next (); - else if (sym == Mat_open_square_bracket) - candidates.PrevGroup (); - else if (sym == Mat_close_square_bracket) - candidates.NextGroup (); - } - } - - internal int marker (MSymbol sym) - { - int pos = cursor_pos; - - if (sym.Name.Length == 2 && sym.Name[0] == '@') - { - switch (sym.Name[0]) - { - case '<': pos = 0; break; - case '>': pos = preedit.Length; break; - case '-': pos = cursor_pos - 1; break; - case '+': pos = cursor_pos + 1; break; - case '[': - if (pos > 0) - { - int to; - preedit.FindProp (MInputMethod.Mcandidates, pos - 1, - out pos, out to); - } - else - pos = 0; - break; - case ']': - if (cursor_pos < preedit.Length - 1) - { - int from; - preedit.FindProp (MInputMethod.Mcandidates, pos, - out from, out pos); - } - else - pos = preedit.Length; - break; - default: - if (sym.Name[0] >= '0' && sym.Name[0] <= '9') - pos = sym.Name[0]; - break; - } - } - else if (sym.Name.Length >= 3 && sym.Name[0] == '@') - { - pos = int.Parse (sym.Name.Substring (2)); - } - else - { - object val = markers.Get (sym); - - if (val is int) - pos = (int) val; - } - return pos; - } - - internal int char_at (int pos) - { - int c; - - pos += cursor_pos; - if (pos < 0) - { - if (preceding_text.Length < -pos) - { - MPlist plist = new MPlist (); - plist.Push (MSymbol.integer, pos); - if (MInputMethod.GetSurroundingText != null - && MInputMethod.GetSurroundingText (this, plist) - && plist.IsMText - && preceding_text.Length < plist.Text.Length) - preceding_text = plist.Text; - } - c = (-pos < preceding_text.Length - ? preceding_text[preceding_text.Length + pos] : -1); - } - else if (pos >= 0 && pos < preedit.Length) - c = preedit[pos]; - else - { - pos -= preedit.Length; - if (pos >= following_text.Length) - { - MPlist plist = new MPlist (); - plist.Push (MSymbol.integer, pos + 1); - if (MInputMethod.GetSurroundingText != null - && MInputMethod.GetSurroundingText (this, plist) - && plist.IsMText - && following_text.Length < plist.Text.Length) - following_text = plist.Text; - } - c = (pos < following_text.Length ? following_text[pos] : -1); - } - return c; - } - - internal void delete (int pos) - { - if (pos < cursor_pos) - preedit_replace (pos, cursor_pos, null); - else - preedit_replace (cursor_pos, pos, null); - preedit_changed = true; - cursor_pos_changed = true; - } - - internal void show () - { - candidate_show = true; - candidate_changed = true; - } - internal void hide () - { - candidate_show = false; - candidate_changed = true; - } - - internal void move (int pos) - { - if (pos < 0) - pos = 0; - else if (pos > preedit.Length) - pos = preedit.Length; - if (pos != cursor_pos) - { - cursor_pos = pos; - preedit_changed = true; - } - } - - internal void mark (MSymbol sym) - { - MPlist slot = markers.Find (sym); - - if (slot == null) - markers.Push (sym, cursor_pos); - else - slot.val = cursor_pos; - } - - internal void pushback (int n) - { - if (n > 0) - { - key_head -= n; - if (key_head < 0) - key_head = 0; - } - else if (n == 0) - key_head = 0; - else - { - key_head = - n; - if (key_head > keys.Count) - key_head = keys.Count; - } - } + private void restore_state () + { + domain.RestoreValues (state_var_values); + preedit.Del (); + preedit.Ins (0, state_preedit); + set_cursor ("restore", state_pos); + } - internal void pushback (MInputMethod.KeySeq keyseq) - { - if (key_head > 0) - key_head--; - if (key_head < keys.Count) - keys.RemoveRange (key_head, keys.Count - key_head); - for (int i = 0; i < keyseq.Count; i++) - keys.Add (keyseq[i]); - } + private bool handle_key () + { + Console.Write ("\nHandle ({0}[{1}]) in {2}", + keys, key_head, state.name); - internal void pop () - { - if (key_head < keys.Count) - keys.RemoveRange (key_head, 1); - } + Keymap sub = keymap.Lookup (keys, ref key_head); - internal void undo (int n) - { - if (n < 0) - keys.RemoveRange (keys.Count + n, - n); - else - keys.RemoveRange (n, keys.Count - n); - reset (); - } + if (sub != keymap) + { + restore_state (); + keymap = sub; + if (keymap.map_actions != null) + { + if (! take_actions (keymap.map_actions)) + return false; + } + else if (keymap.submaps != null) + { + for (int i = state_key_head; i < key_head; i++) + preedit_replace (cursor_pos, cursor_pos, + keys.keyseq[i].ToChar (), null); + } + if (keymap.submaps == null) + { + if (keymap.branch_actions != null) + { + if (! take_actions (keymap.branch_actions)) + return false; + } + if (keymap != state.keymap) + shift (state); + } + } + else + { + State current_state = state; - internal void commit () - { - produced.Cat (preedit); - preedit.Del (); - preedit_changed = true; - } + if (keymap.branch_actions != null) + { + if (! take_actions (keymap.branch_actions)) + return false; + } + if (state == current_state) + { + if (state == im.initial_state + && key_head < keys.keyseq.Count) + return false; + if (keymap != state.keymap) + shift (state); + else if (keymap.branch_actions == null) + shift (im.initial_state); + } + } + return true; + } - internal void shift (MSymbol sym) - { - MInputMethod.State state; + public bool Toggle () + { + active = ! active; + return active; + } - if (sym == MSymbol.t) - { - if (states.Count > 1) - state = states.Pop (); - else - state = states.Peek (); - } - else - { - state = (MInputMethod.State) im.states.Get (sym); - if (state == null) - throw new Exception ("Unknown state: " + state.name); - } - if (state == null) - state = states.Pop (); - if (state == (MInputMethod.State) im.states.val) - { - commit (); - reset (); - } - else - { - state_key_head = key_head; - state_pos = cursor_pos; - state_preedit = preedit.Dup (); - if (state != states.Peek ()) - { - states.Push (state); - state_boundary = domain.SetBoundary (); - status = state.title; - if (status == null) - status = im.title; - status_changed = true; - Xex on_entry - = (Xex) state.branches.Get (MSymbol.t); - if (on_entry != null) - on_entry.Eval (domain); - } - } - } + public bool UnhandledKey (out Key key) + { + key = unhandled_key; + return key_unhandled; + } - internal bool call (MSymbol module, MSymbol method, MPlist arglist) - { - MInputMethod.Plugin plugin; + public MText Preedit { get { return preedit; } } + public MText Produced { get { return produced; } } - if (! im.plugins.TryGetValue (module, out plugin)) - return false; - if (plugin.assembly == null) - { - Assembly assembly; + // Return value: + // true: All keys are handled and there's no text to commit. + // false: Some key is left unhandled or there's a text to + // commit. The caller should refer to UnhandledKey and + // Produced. - try { - assembly = Assembly.LoadFrom (module.Name + ".dll"); - } catch { + public bool Filter (Key key) + { + if (! active) + { + key_unhandled = true; + unhandled_key = key; return false; } - Type t = assembly.GetType ("Plugin"); - for (MPlist p = plugin.methods; ! p.IsEmpty; p = p.next) - p.Set (p.key, t.GetMethod (p.key.Name)); - } - - MethodInfo method_info = (MethodInfo) plugin.methods.Get (method); - if (method_info == null) - return false; - object[] method_arg = new object[1]; - method_arg[0] = arglist; - bool result = (bool) method_info.Invoke (null, method_arg); - if (! result) - return false; - if (! arglist.IsEmpty) - (new Xex (arglist, domain)).Eval (domain); - return true; - } - - internal void reset () - { - preedit.Del (); - state_preedit.Del (); - produced.Del (); - markers.Clear (); - cursor_pos = 0; - key_head = commit_key_head = 0; - states.Clear (); - states.Push ((MInputMethod.State) im.states.Val); - state_key_head = 0; - state_pos = 0; - } + if (key == Key.Reload) + return true; + changed = ChangedStatus.None; + produced.Del (); + preceding_text.Del (); + following_text.Del (); + + key_unhandled = false; + keys.keyseq.Add (key); + int count = 0; + while (key_head < keys.keyseq.Count) + { + if (! handle_key ()) + { + unhandled_key = keys.keyseq[key_head++]; + key_unhandled = true; + break; + } + if (++count == 10) + break; + } + keys.keyseq.RemoveRange (0, key_head); + key_head = 0; - internal object GetCandidates (out int column) - { - column = 0; - if (cursor_pos == 0) - return null; - Candidates candidates - = (Candidates) preedit.GetProp (cursor_pos - 1, - MInputMethod.Mcandidates); - if (candidates == null) - return null; - column = candidates.Column; - return candidates.Current; - } + if ((changed & ChangedStatus.Preedit) != ChangedStatus.None + && PreeditChanged != null) + { + callback_arg.Set (MSymbol.mtext, preedit); + PreeditChanged (this, callback_arg); + } + if ((changed & ChangedStatus.StateTitle) != ChangedStatus.None + && StatusChanged != null) + { + callback_arg.Set (MSymbol.mtext, status); + StatusChanged (this, callback_arg); + } + if ((changed & ChangedStatus.Candidate) != ChangedStatus.None + && CandidateChanged != null) + { + CandidateChanged (this, callback_arg); + } - internal void HandleKey () - { - MInputMethod.State state = states.Peek (); + Console.Write ("\nPreedit(\"{0}\"/{1}), Produced({2})", + preedit, cursor_pos, produced); - + return (! key_unhandled && produced.Length == 0); + } } } }