X-Git-Url: https://git.xonotic.org/?p=xonotic%2Fgmqcc.git;a=blobdiff_plain;f=lexer.c;h=a495d27fa4cb034305b735ddef884198885e4267;hp=a00814dc093e8fef32e3df97f4e01db419fe7822;hb=783b7b6594cb3fde2b9bf945df7a68cb3afa2d5f;hpb=cddf70f46bc9c46b6adda39a83e9564bf0cf34d3

diff --git a/lexer.c b/lexer.c
index a00814d..a495d27 100644
--- a/lexer.c
+++ b/lexer.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2012, 2013
+ * Copyright (C) 2012, 2013, 2014, 2015
  *     Wolfgang Bumiller
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
@@ -25,6 +25,7 @@
 
 #include "gmqcc.h"
 #include "lexer.h"
+
 /*
  * List of Keywords
  */
@@ -37,8 +38,6 @@ static const char *keywords_qc[] = {
     "return",
     "const"
 };
-static size_t num_keywords_qc = sizeof(keywords_qc) / sizeof(keywords_qc[0]);
-
 /* For fte/gmgqcc */
 static const char *keywords_fg[] = {
     "switch", "case", "default",
@@ -49,12 +48,10 @@ static const char *keywords_fg[] = {
 
     "__builtin_debug_printtype"
 };
-static size_t num_keywords_fg = sizeof(keywords_fg) / sizeof(keywords_fg[0]);
 
 /*
  * Lexer code
  */
-
 static char* *lex_filenames;
 
 static void lexerror(lex_file *lex, const char *fmt, ...)
@@ -63,7 +60,7 @@ static void lexerror(lex_file *lex, const char *fmt, ...)
 
     va_start(ap, fmt);
     if (lex)
-        con_vprintmsg(LVL_ERROR, lex->ctx.file, lex->sline, lex->ctx.column, "parse error", fmt, ap);
+        con_vprintmsg(LVL_ERROR, lex->name, lex->sline, lex->column, "parse error", fmt, ap);
     else
         con_vprintmsg(LVL_ERROR, "", 0, 0, "parse error", fmt, ap);
     va_end(ap);
@@ -71,113 +68,39 @@ static void lexerror(lex_file *lex, const char *fmt, ...)
 
 static bool lexwarn(lex_file *lex, int warntype, const char *fmt, ...)
 {
-    bool    r;
-    va_list ap;
+    bool      r;
+    lex_ctx_t ctx;
+    va_list   ap;
+
+    ctx.file   = lex->name;
+    ctx.line   = lex->sline;
+    ctx.column = lex->column;
 
     va_start(ap, fmt);
-    r = vcompile_warning(lex->ctx, warntype, fmt, ap);
+    r = vcompile_warning(ctx, warntype, fmt, ap);
     va_end(ap);
     return r;
 }
 
-
-#if 0
-token* token_new()
-{
-    token *tok = (token*)mem_a(sizeof(token));
-    if (!tok)
-        return NULL;
-    memset(tok, 0, sizeof(*tok));
-    return tok;
-}
-
-void token_delete(token *self)
-{
-    if (self->next && self->next->prev == self)
-        self->next->prev = self->prev;
-    if (self->prev && self->prev->next == self)
-        self->prev->next = self->next;
-    MEM_VECTOR_CLEAR(self, value);
-    mem_d(self);
-}
-
-token* token_copy(const token *cp)
-{
-    token* self = token_new();
-    if (!self)
-        return NULL;
-    /* copy the value */
-    self->value_alloc = cp->value_count + 1;
-    self->value_count = cp->value_count;
-    self->value = (char*)mem_a(self->value_alloc);
-    if (!self->value) {
-        mem_d(self);
-        return NULL;
-    }
-    memcpy(self->value, cp->value, cp->value_count);
-    self->value[self->value_alloc-1] = 0;
-
-    /* rest */
-    self->ctx = cp->ctx;
-    self->ttype = cp->ttype;
-    memcpy(&self->constval, &cp->constval, sizeof(self->constval));
-    return self;
-}
-
-void token_delete_all(token *t)
-{
-    token *n;
-
-    do {
-        n = t->next;
-        token_delete(t);
-        t = n;
-    } while(t);
-}
-
-token* token_copy_all(const token *cp)
-{
-    token *cur;
-    token *out;
-
-    out = cur = token_copy(cp);
-    if (!out)
-        return NULL;
-
-    while (cp->next) {
-        cp = cp->next;
-        cur->next = token_copy(cp);
-        if (!cur->next) {
-            token_delete_all(out);
-            return NULL;
-        }
-        cur->next->prev = cur;
-        cur = cur->next;
-    }
-
-    return out;
-}
-#else
 static void lex_token_new(lex_file *lex)
 {
-#if 0
-    if (lex->tok)
-        token_delete(lex->tok);
-    lex->tok = token_new();
-#else
     if (lex->tok.value)
         vec_shrinkto(lex->tok.value, 0);
 
     lex->tok.constval.t  = 0;
-    lex->tok.ctx         = &lex->ctx; /* this is 'shallow' */
-#endif
+    lex->tok.ctx.line    = lex->sline;
+    lex->tok.ctx.file    = lex->name;
+    lex->tok.ctx.column  = lex->column;
 }
-#endif
+
+static void lex_ungetch(lex_file *lex, int ch);
+static int lex_getch(lex_file *lex);
 
 lex_file* lex_open(const char *file)
 {
-    lex_file *lex;
-    FILE *in = fs_file_open(file, "rb");
+    lex_file  *lex;
+    fs_file_t *in = fs_file_open(file, "rb");
+    uint32_t   read;
 
     if (!in) {
         lexerror(NULL, "open failed: '%s'\n", file);
@@ -193,14 +116,27 @@ lex_file* lex_open(const char *file)
 
     memset(lex, 0, sizeof(*lex));
 
-    lex->file        = in;
-    lex->ctx.file    = util_strdup(file);
-    lex->ctx.line    = 1; /* we start counting at 1 */
-    lex->ctx.column  = 0;
-    lex->peekpos     = 0;
-    lex->eof         = false;
+    lex->file    = in;
+    lex->name    = util_strdup(file);
+    lex->line    = 1; /* we start counting at 1 */
+    lex->column  = 0;
+    lex->peekpos = 0;
+    lex->eof     = false;
+
+    /* handle BOM */
+    if ((read = (lex_getch(lex) << 16) | (lex_getch(lex) << 8) | lex_getch(lex)) != 0xEFBBBF) {
+        lex_ungetch(lex, (read & 0x0000FF));
+        lex_ungetch(lex, (read & 0x00FF00) >> 8);
+        lex_ungetch(lex, (read & 0xFF0000) >> 16);
+    } else {
+        /*
+         * otherwise the lexer has advanced 3 bytes for the BOM, we need
+         * to set the column back to 0
+         */
+        lex->column = 0;
+    }
 
-    vec_push(lex_filenames, (char *)lex->ctx.file);
+    vec_push(lex_filenames, lex->name);
     return lex;
 }
 
@@ -221,13 +157,13 @@ lex_file* lex_open_string(const char *str, size_t len, const char *name)
     lex->open_string_length = len;
     lex->open_string_pos    = 0;
 
-    lex->ctx.file    = util_strdup(name ? name : "<string-source>");
-    lex->ctx.line    = 1; /* we start counting at 1 */
-    lex->ctx.column  = 0;
-    lex->peekpos     = 0;
-    lex->eof         = false;
+    lex->name    = util_strdup(name ? name : "<string-source>");
+    lex->line    = 1; /* we start counting at 1 */
+    lex->peekpos = 0;
+    lex->eof     = false;
+    lex->column  = 0;
 
-    vec_push(lex_filenames, (char*)lex->ctx.file);
+    vec_push(lex_filenames, lex->name);
 
     return lex;
 }
@@ -252,29 +188,28 @@ void lex_close(lex_file *lex)
 
     if (lex->file)
         fs_file_close(lex->file);
-#if 0
-    if (lex->tok)
-        token_delete(lex->tok);
-#else
+
     vec_free(lex->tok.value);
-#endif
+
     /* mem_d(lex->name); collected in lex_filenames */
     mem_d(lex);
 }
 
+
+
 static int lex_fgetc(lex_file *lex)
 {
     if (lex->file) {
-        lex->ctx.column++;
+        lex->column++;
         return fs_file_getc(lex->file);
     }
     if (lex->open_string) {
         if (lex->open_string_pos >= lex->open_string_length)
-            return EOF;
-        lex->ctx.column++;
+            return FS_FILE_EOF;
+        lex->column++;
         return lex->open_string[lex->open_string_pos++];
     }
-    return EOF;
+    return FS_FILE_EOF;
 }
 
 /* Get or put-back data
@@ -282,14 +217,13 @@ static int lex_fgetc(lex_file *lex)
  * are working on.
  * The are merely wrapping get/put in order to count line numbers.
  */
-static void lex_ungetch(lex_file *lex, int ch);
 static int lex_try_trigraph(lex_file *lex, int old)
 {
     int c2, c3;
     c2 = lex_fgetc(lex);
     if (!lex->push_line && c2 == '\n') {
-        lex->ctx.line++;
-        lex->ctx.column = 0;
+        lex->line++;
+        lex->column = 0;
     }
 
     if (c2 != '?') {
@@ -299,8 +233,8 @@ static int lex_try_trigraph(lex_file *lex, int old)
 
     c3 = lex_fgetc(lex);
     if (!lex->push_line && c3 == '\n') {
-        lex->ctx.line++;
-        lex->ctx.column = 0;
+        lex->line++;
+        lex->column = 0;
     }
 
     switch (c3) {
@@ -328,7 +262,7 @@ static int lex_try_digraph(lex_file *lex, int ch)
      * need to offset a \n the ungetch would recognize
      */
     if (!lex->push_line && c2 == '\n')
-        lex->ctx.line++;
+        lex->line++;
     if      (ch == '<' && c2 == ':')
         return '[';
     else if (ch == ':' && c2 == '>')
@@ -349,14 +283,18 @@ static int lex_getch(lex_file *lex)
 
     if (lex->peekpos) {
         lex->peekpos--;
-        if (!lex->push_line && lex->peek[lex->peekpos] == '\n')
-            lex->ctx.line++;
+        if (!lex->push_line && lex->peek[lex->peekpos] == '\n') {
+            lex->line++;
+            lex->column = 0;
+        }
         return lex->peek[lex->peekpos];
     }
 
     ch = lex_fgetc(lex);
-    if (!lex->push_line && ch == '\n')
-        lex->ctx.line++;
+    if (!lex->push_line && ch == '\n') {
+        lex->line++;
+        lex->column = 0;
+    }
     else if (ch == '?')
         return lex_try_trigraph(lex, ch);
     else if (!lex->flags.nodigraphs && (ch == '<' || ch == ':' || ch == '%'))
@@ -367,10 +305,10 @@ static int lex_getch(lex_file *lex)
 static void lex_ungetch(lex_file *lex, int ch)
 {
     lex->peek[lex->peekpos++] = ch;
-    lex->ctx.column--;
+    lex->column--;
     if (!lex->push_line && ch == '\n') {
-        lex->ctx.line--;
-        lex->ctx.column = 0;
+        lex->line--;
+        lex->column = 0;
     }
 }
 
@@ -421,7 +359,7 @@ static bool lex_try_pragma(lex_file *lex)
     if (lex->flags.preprocessing)
         return false;
 
-    line = lex->ctx.line;
+    line = lex->line;
 
     ch = lex_getch(lex);
     if (ch != '#') {
@@ -476,8 +414,8 @@ static bool lex_try_pragma(lex_file *lex)
             goto unroll;
     }
     else if (!strcmp(command, "file")) {
-        lex->ctx.file = util_strdup(param);
-        vec_push(lex_filenames, (char*)lex->ctx.file);
+        lex->name = util_strdup(param);
+        vec_push(lex_filenames, lex->name);
     }
     else if (!strcmp(command, "line")) {
         line = strtol(param, NULL, 0)-1;
@@ -485,8 +423,8 @@ static bool lex_try_pragma(lex_file *lex)
     else
         goto unroll;
 
-    lex->ctx.line = line;
-    while (ch != '\n' && ch != EOF)
+    lex->line = line;
+    while (ch != '\n' && ch != FS_FILE_EOF)
         ch = lex_getch(lex);
     vec_free(command);
     vec_free(param);
@@ -522,7 +460,7 @@ unroll:
     }
     lex_ungetch(lex, '#');
 
-    lex->ctx.line = line;
+    lex->line = line;
     return false;
 }
 
@@ -566,7 +504,7 @@ static int lex_skipwhite(lex_file *lex, bool hadwhite)
     do
     {
         ch = lex_getch(lex);
-        while (ch != EOF && util_isspace(ch)) {
+        while (ch != FS_FILE_EOF && util_isspace(ch)) {
             if (ch == '\n') {
                 if (lex_try_pragma(lex))
                     continue;
@@ -598,15 +536,11 @@ static int lex_skipwhite(lex_file *lex, bool hadwhite)
 
                 if (lex->flags.preprocessing) {
                     haswhite = true;
-                    /*
-                    lex_tokench(lex, '/');
-                    lex_tokench(lex, '/');
-                    */
                     lex_tokench(lex, ' ');
                     lex_tokench(lex, ' ');
                 }
 
-                while (ch != EOF && ch != '\n') {
+                while (ch != FS_FILE_EOF && ch != '\n') {
                     if (lex->flags.preprocessing)
                         lex_tokench(lex, ' '); /* ch); */
                     ch = lex_getch(lex);
@@ -623,25 +557,17 @@ static int lex_skipwhite(lex_file *lex, bool hadwhite)
                 /* multiline comment */
                 if (lex->flags.preprocessing) {
                     haswhite = true;
-                    /*
-                    lex_tokench(lex, '/');
-                    lex_tokench(lex, '*');
-                    */
                     lex_tokench(lex, ' ');
                     lex_tokench(lex, ' ');
                 }
 
-                while (ch != EOF)
+                while (ch != FS_FILE_EOF)
                 {
                     ch = lex_getch(lex);
                     if (ch == '*') {
                         ch = lex_getch(lex);
                         if (ch == '/') {
                             if (lex->flags.preprocessing) {
-                                /*
-                                lex_tokench(lex, '*');
-                                lex_tokench(lex, '/');
-                                */
                                 lex_tokench(lex, ' ');
                                 lex_tokench(lex, ' ');
                             }
@@ -653,7 +579,7 @@ static int lex_skipwhite(lex_file *lex, bool hadwhite)
                         if (ch == '\n')
                             lex_tokench(lex, '\n');
                         else
-                            lex_tokench(lex, ' '); /* ch); */
+                            lex_tokench(lex, ' ');
                     }
                 }
                 ch = ' '; /* cause TRUE in the isspace check */
@@ -664,7 +590,7 @@ static int lex_skipwhite(lex_file *lex, bool hadwhite)
             ch = '/';
             break;
         }
-    } while (ch != EOF && util_isspace(ch));
+    } while (ch != FS_FILE_EOF && util_isspace(ch));
 
     if (haswhite) {
         lex_endtoken(lex);
@@ -680,7 +606,7 @@ static bool GMQCC_WARN lex_finish_ident(lex_file *lex)
     int ch;
 
     ch = lex_getch(lex);
-    while (ch != EOF && isident(ch))
+    while (ch != FS_FILE_EOF && isident(ch))
     {
         lex_tokench(lex, ch);
         ch = lex_getch(lex);
@@ -700,7 +626,7 @@ static int lex_parse_frame(lex_file *lex)
     lex_token_new(lex);
 
     ch = lex_getch(lex);
-    while (ch != EOF && ch != '\n' && util_isspace(ch))
+    while (ch != FS_FILE_EOF && ch != '\n' && util_isspace(ch))
         ch = lex_getch(lex);
 
     if (ch == '\n')
@@ -754,14 +680,15 @@ static bool lex_finish_frames(lex_file *lex)
 
 static int GMQCC_WARN lex_finish_string(lex_file *lex, int quote)
 {
-    uchar_t chr;
-    int ch = 0;
+    utf8ch_t chr = 0;
+    int ch = 0, texttype = 0;
     int nextch;
     bool hex;
+    bool oct;
     char u8buf[8]; /* way more than enough */
     int  u8len, uc;
 
-    while (ch != EOF)
+    while (ch != FS_FILE_EOF)
     {
         ch = lex_getch(lex);
         if (ch == quote)
@@ -770,18 +697,18 @@ static int GMQCC_WARN lex_finish_string(lex_file *lex, int quote)
         if (lex->flags.preprocessing && ch == '\\') {
             lex_tokench(lex, ch);
             ch = lex_getch(lex);
-            if (ch == EOF) {
+            if (ch == FS_FILE_EOF) {
                 lexerror(lex, "unexpected end of file");
-                lex_ungetch(lex, EOF); /* next token to be TOKEN_EOF */
+                lex_ungetch(lex, FS_FILE_EOF); /* next token to be TOKEN_EOF */
                 return (lex->tok.ttype = TOKEN_ERROR);
             }
             lex_tokench(lex, ch);
         }
         else if (ch == '\\') {
             ch = lex_getch(lex);
-            if (ch == EOF) {
+            if (ch == FS_FILE_EOF) {
                 lexerror(lex, "unexpected end of file");
-                lex_ungetch(lex, EOF); /* next token to be TOKEN_EOF */
+                lex_ungetch(lex, FS_FILE_EOF); /* next token to be TOKEN_EOF */
                 return (lex->tok.ttype = TOKEN_ERROR);
             }
 
@@ -789,13 +716,12 @@ static int GMQCC_WARN lex_finish_string(lex_file *lex, int quote)
             case '\\': break;
             case '\'': break;
             case '"':  break;
-            case 'a':  ch = '\a'; break;
-            case 'b':  ch = '\b'; break;
-            case 'r':  ch = '\r'; break;
-            case 'n':  ch = '\n'; break;
-            case 't':  ch = '\t'; break;
-            case 'f':  ch = '\f'; break;
-            case 'v':  ch = '\v'; break;
+            case 'a': ch = '\a'; break;
+            case 'r': ch = '\r'; break;
+            case 'n': ch = '\n'; break;
+            case 't': ch = '\t'; break;
+            case 'f': ch = '\f'; break;
+            case 'v': ch = '\v'; break;
             case 'x':
             case 'X':
                 /* same procedure as in fteqcc */
@@ -843,17 +769,18 @@ static int GMQCC_WARN lex_finish_string(lex_file *lex, int quote)
                 chr = 0;
                 nextch = lex_getch(lex);
                 hex = (nextch == 'x');
-                if (!hex)
+                oct = (nextch == '0');
+                if (!hex && !oct)
                     lex_ungetch(lex, nextch);
                 for (nextch = lex_getch(lex); nextch != '}'; nextch = lex_getch(lex)) {
-                    if (!hex) {
+                    if (!hex && !oct) {
                         if (nextch >= '0' && nextch <= '9')
                             chr = chr * 10 + nextch - '0';
                         else {
                             lexerror(lex, "bad character code");
                             return (lex->tok.ttype = TOKEN_ERROR);
                         }
-                    } else {
+                    } else if (!oct) {
                         if (nextch >= '0' && nextch <= '9')
                             chr = chr * 0x10 + nextch - '0';
                         else if (nextch >= 'a' && nextch <= 'f')
@@ -864,6 +791,13 @@ static int GMQCC_WARN lex_finish_string(lex_file *lex, int quote)
                             lexerror(lex, "bad character code");
                             return (lex->tok.ttype = TOKEN_ERROR);
                         }
+                    } else {
+                        if (nextch >= '0' && nextch <= '9')
+                            chr = chr * 8 + chr - '0';
+                        else {
+                            lexerror(lex, "bad character code");
+                            return (lex->tok.ttype = TOKEN_ERROR);
+                        }
                     }
                     if (chr > 0x10FFFF || (!OPTS_FLAG(UTF8) && chr > 255))
                     {
@@ -872,15 +806,16 @@ static int GMQCC_WARN lex_finish_string(lex_file *lex, int quote)
                     }
                 }
                 if (OPTS_FLAG(UTF8) && chr >= 128) {
-                    u8len = u8_fromchar(chr, u8buf, sizeof(u8buf));
+                    u8len = utf8_from(u8buf, chr);
                     if (!u8len)
                         ch = 0;
                     else {
                         --u8len;
-                        lex->ctx.column += u8len;
+                        lex->column += u8len;
                         for (uc = 0; uc < u8len; ++uc)
                             lex_tokench(lex, u8buf[uc]);
-                        /* the last character will be inserted with the tokench() call
+                        /*
+                         * the last character will be inserted with the tokench() call
                          * below the switch
                          */
                         ch = u8buf[uc];
@@ -889,7 +824,15 @@ static int GMQCC_WARN lex_finish_string(lex_file *lex, int quote)
                 else
                     ch = chr;
                 break;
-            case '\n':  ch = '\n'; break;
+
+            /* high bit text */
+            case 'b': case 's':
+                texttype ^= 128;
+                continue;
+
+            case '\n':
+                ch = '\n';
+                break;
 
             default:
                 lexwarn(lex, WARN_UNKNOWN_CONTROL_SEQUENCE, "unrecognized control sequence: \\%c", ch);
@@ -897,13 +840,13 @@ static int GMQCC_WARN lex_finish_string(lex_file *lex, int quote)
                 lex_tokench(lex, '\\');
             }
             /* add the character finally */
-            lex_tokench(lex, ch);
+            lex_tokench(lex, ch | texttype);
         }
         else
             lex_tokench(lex, ch);
     }
     lexerror(lex, "unexpected end of file within string constant");
-    lex_ungetch(lex, EOF); /* next token to be TOKEN_EOF */
+    lex_ungetch(lex, FS_FILE_EOF); /* next token to be TOKEN_EOF */
     return (lex->tok.ttype = TOKEN_ERROR);
 }
 
@@ -990,10 +933,6 @@ int lex_do(lex_file *lex)
     bool hadwhite = false;
 
     lex_token_new(lex);
-#if 0
-    if (!lex->tok)
-        return TOKEN_FATAL;
-#endif
 
     while (true) {
         ch = lex_skipwhite(lex, hadwhite);
@@ -1017,14 +956,14 @@ int lex_do(lex_file *lex)
         return (lex->tok.ttype = ch);
     }
 
-    lex->sline         = lex->ctx.line;
-    lex->tok.ctx->line = lex->sline;
-    lex->tok.ctx->file = lex->ctx.file;
+    lex->sline = lex->line;
+    lex->tok.ctx.line = lex->sline;
+    lex->tok.ctx.file = lex->name;
 
     if (lex->eof)
         return (lex->tok.ttype = TOKEN_FATAL);
 
-    if (ch == EOF) {
+    if (ch == FS_FILE_EOF) {
         lex->eof = true;
         return (lex->tok.ttype = TOKEN_EOF);
     }
@@ -1061,7 +1000,7 @@ int lex_do(lex_file *lex)
         if (!strcmp(v, "framevalue"))
         {
             ch = lex_getch(lex);
-            while (ch != EOF && util_isspace(ch) && ch != '\n')
+            while (ch != FS_FILE_EOF && util_isspace(ch) && ch != '\n')
                 ch = lex_getch(lex);
 
             if (!util_isdigit(ch)) {
@@ -1141,7 +1080,7 @@ int lex_do(lex_file *lex)
             vec_free(lex->frames);
             /* skip line (fteqcc does it too) */
             ch = lex_getch(lex);
-            while (ch != EOF && ch != '\n')
+            while (ch != FS_FILE_EOF && ch != '\n')
                 ch = lex_getch(lex);
             return lex_do(lex);
         }
@@ -1155,7 +1094,7 @@ int lex_do(lex_file *lex)
         {
             /* skip line */
             ch = lex_getch(lex);
-            while (ch != EOF && ch != '\n')
+            while (ch != FS_FILE_EOF && ch != '\n')
                 ch = lex_getch(lex);
             return lex_do(lex);
         }
@@ -1238,10 +1177,6 @@ int lex_do(lex_file *lex)
          */
         switch (ch)
         {
-            /*
-            case '+':
-            case '-':
-            */
             case '*':
             case '/':
             case '<':
@@ -1299,16 +1234,22 @@ int lex_do(lex_file *lex)
     }
 
     if (ch == '+' || ch == '-' || /* ++, --, +=, -=  and -> as well! */
-        ch == '>' || ch == '<' || /* <<, >>, <=, >=                  */
+        ch == '>' || ch == '<' || /* <<, >>, <=, >=  and >< as well! */
         ch == '=' || ch == '!' || /* <=>, ==, !=                     */
         ch == '&' || ch == '|' || /* &&, ||, &=, |=                  */
         ch == '~' || ch == '^'    /* ~=, ~, ^                        */
     )  {
         lex_tokench(lex, ch);
-
         nextch = lex_getch(lex);
-        if ((nextch == '=' && ch != '<') || (nextch == ch && ch != '!')) {
+
+        if ((nextch == '=' && ch != '<') || (nextch == '<' && ch == '>'))
+            lex_tokench(lex, nextch);
+        else if (nextch == ch && ch != '!') {
             lex_tokench(lex, nextch);
+            if ((thirdch = lex_getch(lex)) == '=')
+                lex_tokench(lex, thirdch);
+            else
+                lex_ungetch(lex, thirdch);
         } else if (ch == '<' && nextch == '=') {
             lex_tokench(lex, nextch);
             if ((thirdch = lex_getch(lex)) == '>')
@@ -1347,15 +1288,6 @@ int lex_do(lex_file *lex)
         return (lex->tok.ttype = TOKEN_OPERATOR);
     }
 
-    /*
-    if (ch == '^' || ch == '~' || ch == '!')
-    {
-        lex_tokench(lex, ch);
-        lex_endtoken(lex);
-        return (lex->tok.ttype = TOKEN_OPERATOR);
-    }
-    */
-
     if (ch == '*' || ch == '/') /* *=, /= */
     {
         lex_tokench(lex, ch);
@@ -1407,14 +1339,16 @@ int lex_do(lex_file *lex)
         } else if (!strcmp(v, "vector")) {
             lex->tok.ttype = TOKEN_TYPENAME;
             lex->tok.constval.t = TYPE_VECTOR;
+        } else if (!strcmp(v, "_length")) {
+            lex->tok.ttype = TOKEN_OPERATOR;
         } else {
             size_t kw;
-            for (kw = 0; kw < num_keywords_qc; ++kw) {
+            for (kw = 0; kw < GMQCC_ARRAY_COUNT(keywords_qc); ++kw) {
                 if (!strcmp(v, keywords_qc[kw]))
                     return (lex->tok.ttype = TOKEN_KEYWORD);
             }
             if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_QCC) {
-                for (kw = 0; kw < num_keywords_fg; ++kw) {
+                for (kw = 0; kw < GMQCC_ARRAY_COUNT(keywords_fg); ++kw) {
                     if (!strcmp(v, keywords_fg[kw]))
                         return (lex->tok.ttype = TOKEN_KEYWORD);
                 }
@@ -1463,14 +1397,10 @@ int lex_do(lex_file *lex)
         lex_endtoken(lex);
 
         lex->tok.ttype = TOKEN_CHARCONST;
-         /* It's a vector if we can successfully scan 3 floats */
-#ifdef _MSC_VER
-        if (sscanf_s(lex->tok.value, " %f %f %f ",
-                   &lex->tok.constval.v.x, &lex->tok.constval.v.y, &lex->tok.constval.v.z) == 3)
-#else
-        if (sscanf(lex->tok.value, " %f %f %f ",
+
+        /* It's a vector if we can successfully scan 3 floats */
+        if (util_sscanf(lex->tok.value, " %f %f %f ",
                    &lex->tok.constval.v.x, &lex->tok.constval.v.y, &lex->tok.constval.v.z) == 3)
-#endif
 
         {
              lex->tok.ttype = TOKEN_VECTORCONST;
@@ -1478,9 +1408,9 @@ int lex_do(lex_file *lex)
         else
         {
             if (!lex->flags.preprocessing && strlen(lex->tok.value) > 1) {
-                uchar_t u8char;
+                utf8ch_t u8char;
                 /* check for a valid utf8 character */
-                if (!OPTS_FLAG(UTF8) || !u8_analyze(lex->tok.value, NULL, NULL, &u8char, 8)) {
+                if (!OPTS_FLAG(UTF8) || !utf8_to(&u8char, (const unsigned char *)lex->tok.value, 8)) {
                     if (lexwarn(lex, WARN_MULTIBYTE_CHARACTER,
                                 ( OPTS_FLAG(UTF8) ? "invalid multibyte character sequence `%s`"
                                                   : "multibyte character: `%s`" ),
@@ -1510,6 +1440,6 @@ int lex_do(lex_file *lex)
         return (lex->tok.ttype = ch);
     }
 
-    lexerror(lex, "unknown token: `%s`", lex->tok.value);
+    lexerror(lex, "unknown token: `%c`", ch);
     return (lex->tok.ttype = TOKEN_ERROR);
 }