1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/graphite2/src/inc/Error.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,127 @@
1.4 +/* GRAPHITE2 LICENSING
1.5 +
1.6 + Copyright 2013, SIL International
1.7 + All rights reserved.
1.8 +
1.9 + This library is free software; you can redistribute it and/or modify
1.10 + it under the terms of the GNU Lesser General Public License as published
1.11 + by the Free Software Foundation; either version 2.1 of License, or
1.12 + (at your option) any later version.
1.13 +
1.14 + This program is distributed in the hope that it will be useful,
1.15 + but WITHOUT ANY WARRANTY; without even the implied warranty of
1.16 + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
1.17 + Lesser General Public License for more details.
1.18 +
1.19 + You should also have received a copy of the GNU Lesser General Public
1.20 + License along with this library in the file named "LICENSE".
1.21 + If not, write to the Free Software Foundation, 51 Franklin Street,
1.22 + Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
1.23 + internet at http://www.fsf.org/licenses/lgpl.html.
1.24 +
1.25 +Alternatively, the contents of this file may be used under the terms of the
1.26 +Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public
1.27 +License, as published by the Free Software Foundation, either version 2
1.28 +of the License or (at your option) any later version.
1.29 +*/
1.30 +#pragma once
1.31 +
1.32 +// numbers are explicitly assigned for future proofing
1.33 +
1.34 +namespace graphite2
1.35 +{
1.36 +
1.37 +class Error
1.38 +{
1.39 +public:
1.40 + Error() : _e(0) {};
1.41 + operator bool() { return (_e != 0); }
1.42 + int error() { return _e; }
1.43 + void error(int e) { _e = e; }
1.44 + bool test(bool pr, int err) { return (_e = int(pr) * err); }
1.45 +
1.46 +private:
1.47 + int _e;
1.48 +};
1.49 +
1.50 +enum errcontext {
1.51 + EC_READGLYPHS = 1, // while reading glyphs
1.52 + EC_READSILF = 2, // in Silf table
1.53 + EC_ASILF = 3, // in Silf %d
1.54 + EC_APASS = 4, // in Silf %d, pass %d
1.55 + EC_PASSCCODE = 5, // in pass constraint code for Silf %d, pass %d
1.56 + EC_ARULE = 6, // in Silf %d, pass %d, rule %d
1.57 + EC_ASTARTS = 7, // in Silf %d, pass %d, start state %d
1.58 + EC_ATRANS = 8, // in Silf %d, pass %d, fsm state %d
1.59 + EC_ARULEMAP = 9 // in Silf %d, pass %d, state %d
1.60 +};
1.61 +
1.62 +enum errors {
1.63 + E_OUTOFMEM = 1, // Out of memory
1.64 + E_NOGLYPHS = 2, // There are no glyphs in the font
1.65 + E_BADUPEM = 3, // The units per em for the font is bad (0)
1.66 + E_BADCMAP = 4, // The font does not contain any useful cmaps
1.67 + E_NOSILF = 5, // Missing Silf table
1.68 + E_TOOOLD = 6, // Silf table version is too old
1.69 + E_BADSIZE = 7, // context object has the wrong structural size
1.70 +// Silf Subtable Errors take a Silf subtable number * 256 in the context
1.71 + E_BADMAXGLYPH = 8, // Silf max glyph id is too high
1.72 + E_BADNUMJUSTS = 9, // Number of Silf justification blocks is too high
1.73 + E_BADENDJUSTS = 10, // Silf justification blocks take too much of the Silf table space
1.74 + E_BADCRITFEATURES = 11, // Critical features section in a Silf table is too big
1.75 + E_BADSCRIPTTAGS = 12, // Silf script tags area is too big
1.76 + E_BADAPSEUDO = 13, // The pseudo glyph attribute number is too high
1.77 + E_BADABREAK = 14, // The linebreak glyph attribute number is too high
1.78 + E_BADABIDI = 15, // The bidi glyph attribute number is too high
1.79 + E_BADAMIRROR = 16, // The mirrored glyph attribute number is too high
1.80 + E_BADNUMPASSES = 17, // The number of passes is > 128
1.81 + E_BADPASSESSTART = 18, // The Silf table is too small to hold any passes
1.82 + E_BADPASSBOUND = 19, // The positioning pass number is too low or the substitution pass number is too high
1.83 + E_BADPPASS = 20, // The positioning pass number is too high
1.84 + E_BADSPASS = 21, // the substitution pass number is too high
1.85 + E_BADJPASSBOUND = 22, // the justification pass must be higher than the positioning pass
1.86 + E_BADJPASS = 23, // the justification pass is too high
1.87 + E_BADALIG = 24, // the number of initial ligature component glyph attributes is too high
1.88 + E_BADBPASS = 25, // the bidi pass number is specified and is either too high or too low
1.89 + E_BADNUMPSEUDO = 26, // The number of pseudo glyphs is too high
1.90 + E_BADCLASSSIZE = 27, // The size of the classes block is bad
1.91 + E_TOOMANYLINEAR = 28, // The number of linear classes in the silf table is too high
1.92 + E_CLASSESTOOBIG = 29, // There are too many classes for the space allocated in the Silf subtable
1.93 + E_MISALIGNEDCLASSES = 30, // The class offsets in the class table don't line up with the number of classes
1.94 + E_HIGHCLASSOFFSET = 31, // The class offsets point out of the class table
1.95 + E_BADCLASSOFFSET = 32, // A class offset is less than one following it
1.96 + E_BADCLASSLOOKUPINFO = 33, // The search header info for a non-linear class has wrong values in it
1.97 +// Pass subtable errors. Context has pass number * 65536
1.98 + E_BADPASSSTART = 34, // The start offset for a particular pass is bad
1.99 + E_BADPASSEND = 35, // The end offset for a particular pass is bad
1.100 + E_BADPASSLENGTH = 36, // The length of the pass is too small
1.101 + E_BADNUMTRANS = 37, // The number of transition states in the fsm is bad
1.102 + E_BADNUMSUCCESS = 38, // The number of success states in the fsm is bad
1.103 + E_BADNUMSTATES = 39, // The number of states in the fsm is bad
1.104 + E_NORANGES = 40, // There are no columns in the fsm
1.105 + E_BADRULEMAPLEN = 41, // The size of the success state to rule mapping is bad
1.106 + E_BADCTXTLENBOUNDS = 42, // The precontext maximum is greater than its minimum
1.107 + E_BADCTXTLENS = 43, // The lists of rule lengths or pre context lengths is bad
1.108 + E_BADPASSCCODEPTR = 44, // The pass constraint code position does not align with where the forward reference says it should be
1.109 + E_BADRULECCODEPTR = 45, // The rule constraint code position does not align with where the forward reference says it should be
1.110 + E_BADCCODELEN = 46, // Bad rule/pass constraint code length
1.111 + E_BADACTIONCODEPTR = 47, // The action code position does not align with where the forward reference says it should be
1.112 + E_MUTABLECCODE = 48, // Constraint code edits slots. It shouldn't.
1.113 + E_BADSTATE = 49, // Bad state transition referencing an illegal state
1.114 + E_BADRULEMAPPING = 50, // The structure of the rule mapping is bad
1.115 + E_BADRANGE = 51, // Bad column range structure including a glyph in more than one column
1.116 + E_BADRULENUM = 52, // A reference to a rule is out of range (too high)
1.117 +// Code errors
1.118 + E_CODEFAILURE = 60, // Base code error. The following subcodes must align with Machine::Code::status_t in Code.h
1.119 + E_CODEALLOC = 61, // Out of memory
1.120 + E_INVALIDOPCODE = 62, // Invalid op code
1.121 + E_UNIMPOPCODE = 63, // Unimplemented op code encountered
1.122 + E_OUTOFRANGECODE = 64, // Code argument out of range
1.123 + E_BADJUMPCODE = 65, // Code jumps past end of op codes
1.124 + E_CODEBADARGS = 66, // Code arguments exhausted
1.125 + E_CODENORETURN = 67, // Missing return type op code at end of code
1.126 + E_CODENESTEDCTXT = 68 // Nested context encountered in code
1.127 +};
1.128 +
1.129 +}
1.130 +
