initial checkin of SkSL compiler

src/sksl/lex.sksl.c

+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+ 
+#line 3 "lex.sksl.c"
+
+#define  YY_INT_ALIGNED short int
+
+/* A lexical scanner generated by flex */
+
+#define FLEX_SCANNER
+#define YY_FLEX_MAJOR_VERSION 2
+#define YY_FLEX_MINOR_VERSION 5
+#define YY_FLEX_SUBMINOR_VERSION 35
+#if YY_FLEX_SUBMINOR_VERSION > 0
+#define FLEX_BETA
+#endif
+
+/* First, we deal with  platform-specific or compiler-specific issues. */
+
+/* begin standard C headers. */
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
+
+/* end standard C headers. */
+
+/* flex integer type definitions */
+
+#ifndef FLEXINT_H
+#define FLEXINT_H
+
+/* C99 systems have <inttypes.h>. Non-C99 systems may or may not. */
+
+#if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
+
+/* C99 says to define __STDC_LIMIT_MACROS before including stdint.h,
+ * if you want the limit (max/min) macros for int types. 
+ */
+#ifndef __STDC_LIMIT_MACROS
+#define __STDC_LIMIT_MACROS 1
+#endif
+
+#include <inttypes.h>
+typedef int8_t flex_int8_t;
+typedef uint8_t flex_uint8_t;
+typedef int16_t flex_int16_t;
+typedef uint16_t flex_uint16_t;
+typedef int32_t flex_int32_t;
+typedef uint32_t flex_uint32_t;
+typedef uint64_t flex_uint64_t;
+#else
+typedef signed char flex_int8_t;
+typedef short int flex_int16_t;
+typedef int flex_int32_t;
+typedef unsigned char flex_uint8_t; 
+typedef unsigned short int flex_uint16_t;
+typedef unsigned int flex_uint32_t;
+#endif /* ! C99 */
+
+/* Limits of integral types. */
+#ifndef INT8_MIN
+#define INT8_MIN               (-128)
+#endif
+#ifndef INT16_MIN
+#define INT16_MIN              (-32767-1)
+#endif
+#ifndef INT32_MIN
+#define INT32_MIN              (-2147483647-1)
+#endif
+#ifndef INT8_MAX
+#define INT8_MAX               (127)
+#endif
+#ifndef INT16_MAX
+#define INT16_MAX              (32767)
+#endif
+#ifndef INT32_MAX
+#define INT32_MAX              (2147483647)
+#endif
+#ifndef UINT8_MAX
+#define UINT8_MAX              (255U)
+#endif
+#ifndef UINT16_MAX
+#define UINT16_MAX             (65535U)
+#endif
+#ifndef UINT32_MAX
+#define UINT32_MAX             (4294967295U)
+#endif
+
+#endif /* ! FLEXINT_H */
+
+#ifdef __cplusplus
+
+/* The "const" storage-class-modifier is valid. */
+#define YY_USE_CONST
+
+#else   /* ! __cplusplus */
+
+/* C99 requires __STDC__ to be defined as 1. */
+#if defined (__STDC__)
+
+#define YY_USE_CONST
+
+#endif  /* defined (__STDC__) */
+#endif  /* ! __cplusplus */
+
+#ifdef YY_USE_CONST
+#define yyconst const
+#else
+#define yyconst
+#endif
+
+/* Returned upon end-of-file. */
+#define YY_NULL 0
+
+/* Promotes a possibly negative, possibly signed char to an unsigned
+ * integer for use as an array index.  If the signed char is negative,
+ * we want to instead treat it as an 8-bit unsigned char, hence the
+ * double cast.
+ */
+#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)
+
+/* An opaque pointer. */
+#ifndef YY_TYPEDEF_YY_SCANNER_T
+#define YY_TYPEDEF_YY_SCANNER_T
+typedef void* yyscan_t;
+#endif
+
+/* For convenience, these vars (plus the bison vars far below)
+   are macros in the reentrant scanner. */
+#define yyin yyg->yyin_r
+#define yyout yyg->yyout_r
+#define yyextra yyg->yyextra_r
+#define yyleng yyg->yyleng_r
+#define yytext yyg->yytext_r
+#define yylineno (YY_CURRENT_BUFFER_LVALUE->yy_bs_lineno)
+#define yycolumn (YY_CURRENT_BUFFER_LVALUE->yy_bs_column)
+#define yy_flex_debug yyg->yy_flex_debug_r
+
+/* Enter a start condition.  This macro really ought to take a parameter,
+ * but we do it the disgusting crufty way forced on us by the ()-less
+ * definition of BEGIN.
+ */
+#define BEGIN yyg->yy_start = 1 + 2 *
+
+/* Translate the current start state into a value that can be later handed
+ * to BEGIN to return to the state.  The YYSTATE alias is for lex
+ * compatibility.
+ */
+#define YY_START ((yyg->yy_start - 1) / 2)
+#define YYSTATE YY_START
+
+/* Action number for EOF rule of a given start state. */
+#define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
+
+/* Special action meaning "start processing a new file". */
+#define YY_NEW_FILE skslrestart(yyin ,yyscanner )
+
+#define YY_END_OF_BUFFER_CHAR 0
+
+/* Size of default input buffer. */
+#ifndef YY_BUF_SIZE
+#define YY_BUF_SIZE 16384
+#endif
+
+/* The state buf must be large enough to hold one state per character in the main buffer.
+ */
+#define YY_STATE_BUF_SIZE   ((YY_BUF_SIZE + 2) * sizeof(yy_state_type))
+
+#ifndef YY_TYPEDEF_YY_BUFFER_STATE
+#define YY_TYPEDEF_YY_BUFFER_STATE
+typedef struct yy_buffer_state *YY_BUFFER_STATE;
+#endif
+
+#ifndef YY_TYPEDEF_YY_SIZE_T
+#define YY_TYPEDEF_YY_SIZE_T
+typedef size_t yy_size_t;
+#endif
+
+#define EOB_ACT_CONTINUE_SCAN 0
+#define EOB_ACT_END_OF_FILE 1
+#define EOB_ACT_LAST_MATCH 2
+
+    /* Note: We specifically omit the test for yy_rule_can_match_eol because it requires
+     *       access to the local variable yy_act. Since yyless() is a macro, it would break
+     *       existing scanners that call yyless() from OUTSIDE sksllex. 
+     *       One obvious solution it to make yy_act a global. I tried that, and saw
+     *       a 5% performance hit in a non-yylineno scanner, because yy_act is
+     *       normally declared as a register variable-- so it is not worth it.
+     */
+    #define  YY_LESS_LINENO(n) \
+            do { \
+                yy_size_t yyl;\
+                for ( yyl = n; yyl < yyleng; ++yyl )\
+                    if ( yytext[yyl] == '\n' )\
+                        --yylineno;\
+            }while(0)
+    
+/* Return all but the first "n" matched characters back to the input stream. */
+#define yyless(n) \
+        do \
+                { \
+                /* Undo effects of setting up yytext. */ \
+        int yyless_macro_arg = (n); \
+        YY_LESS_LINENO(yyless_macro_arg);\
+                *yy_cp = yyg->yy_hold_char; \
+                YY_RESTORE_YY_MORE_OFFSET \
+                yyg->yy_c_buf_p = yy_cp = yy_bp + yyless_macro_arg - YY_MORE_ADJ; \
+                YY_DO_BEFORE_ACTION; /* set up yytext again */ \
+                } \
+        while ( 0 )
+
+#define unput(c) yyunput( c, yyg->yytext_ptr , yyscanner )
+
+#ifndef YY_STRUCT_YY_BUFFER_STATE
+#define YY_STRUCT_YY_BUFFER_STATE
+struct yy_buffer_state
+        {
+        FILE *yy_input_file;
+
+        char *yy_ch_buf;                /* input buffer */
+        char *yy_buf_pos;               /* current position in input buffer */
+
+        /* Size of input buffer in bytes, not including room for EOB
+         * characters.
+         */
+        yy_size_t yy_buf_size;
+
+        /* Number of characters read into yy_ch_buf, not including EOB
+         * characters.
+         */
+        yy_size_t yy_n_chars;
+
+        /* Whether we "own" the buffer - i.e., we know we created it,
+         * and can realloc() it to grow it, and should free() it to
+         * delete it.
+         */
+        int yy_is_our_buffer;
+
+        /* Whether this is an "interactive" input source; if so, and
+         * if we're using stdio for input, then we want to use getc()
+         * instead of fread(), to make sure we stop fetching input after
+         * each newline.
+         */
+        int yy_is_interactive;
+
+        /* Whether we're considered to be at the beginning of a line.
+         * If so, '^' rules will be active on the next match, otherwise
+         * not.
+         */
+        int yy_at_bol;
+
+    int yy_bs_lineno; /**< The line count. */
+    int yy_bs_column; /**< The column count. */
+    
+        /* Whether to try to fill the input buffer when we reach the
+         * end of it.
+         */
+        int yy_fill_buffer;
+
+        int yy_buffer_status;
+
+#define YY_BUFFER_NEW 0
+#define YY_BUFFER_NORMAL 1
+        /* When an EOF's been seen but there's still some text to process
+         * then we mark the buffer as YY_EOF_PENDING, to indicate that we
+         * shouldn't try reading from the input source any more.  We might
+         * still have a bunch of tokens to match, though, because of
+         * possible backing-up.
+         *
+         * When we actually see the EOF, we change the status to "new"
+         * (via skslrestart()), so that the user can continue scanning by
+         * just pointing yyin at a new input file.
+         */
+#define YY_BUFFER_EOF_PENDING 2
+
+        };
+#endif /* !YY_STRUCT_YY_BUFFER_STATE */
+
+/* We provide macros for accessing buffer states in case in the
+ * future we want to put the buffer states in a more general
+ * "scanner state".
+ *
+ * Returns the top of the stack, or NULL.
+ */
+#define YY_CURRENT_BUFFER ( yyg->yy_buffer_stack \
+                          ? yyg->yy_buffer_stack[yyg->yy_buffer_stack_top] \
+                          : NULL)
+
+/* Same as previous macro, but useful when we know that the buffer stack is not
+ * NULL or when we need an lvalue. For internal use only.
+ */
+#define YY_CURRENT_BUFFER_LVALUE yyg->yy_buffer_stack[yyg->yy_buffer_stack_top]
+
+void skslrestart (FILE *input_file ,yyscan_t yyscanner );
+void sksl_switch_to_buffer (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
+YY_BUFFER_STATE sksl_create_buffer (FILE *file,int size ,yyscan_t yyscanner );
+void sksl_delete_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
+void sksl_flush_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
+void skslpush_buffer_state (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
+void skslpop_buffer_state (yyscan_t yyscanner );
+
+static void skslensure_buffer_stack (yyscan_t yyscanner );
+static void sksl_load_buffer_state (yyscan_t yyscanner );
+static void sksl_init_buffer (YY_BUFFER_STATE b,FILE *file ,yyscan_t yyscanner );
+
+#define YY_FLUSH_BUFFER sksl_flush_buffer(YY_CURRENT_BUFFER ,yyscanner)
+
+YY_BUFFER_STATE sksl_scan_buffer (char *base,yy_size_t size ,yyscan_t yyscanner );
+YY_BUFFER_STATE sksl_scan_string (yyconst char *yy_str ,yyscan_t yyscanner );
+YY_BUFFER_STATE sksl_scan_bytes (yyconst char *bytes,yy_size_t len ,yyscan_t yyscanner );
+
+void *skslalloc (yy_size_t ,yyscan_t yyscanner );
+void *skslrealloc (void *,yy_size_t ,yyscan_t yyscanner );
+void skslfree (void * ,yyscan_t yyscanner );
+
+#define yy_new_buffer sksl_create_buffer
+
+#define yy_set_interactive(is_interactive) \
+        { \
+        if ( ! YY_CURRENT_BUFFER ){ \
+        skslensure_buffer_stack (yyscanner); \
+                YY_CURRENT_BUFFER_LVALUE =    \
+            sksl_create_buffer(yyin,YY_BUF_SIZE ,yyscanner); \
+        } \
+        YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \
+        }
+
+#define yy_set_bol(at_bol) \
+        { \
+        if ( ! YY_CURRENT_BUFFER ){\
+        skslensure_buffer_stack (yyscanner); \
+                YY_CURRENT_BUFFER_LVALUE =    \
+            sksl_create_buffer(yyin,YY_BUF_SIZE ,yyscanner); \
+        } \
+        YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \
+        }
+
+#define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol)
+
+/* Begin user sect3 */
+
+typedef unsigned char YY_CHAR;
+
+typedef int yy_state_type;
+
+#define yytext_ptr yytext_r
+
+static yy_state_type yy_get_previous_state (yyscan_t yyscanner );
+static yy_state_type yy_try_NUL_trans (yy_state_type current_state  ,yyscan_t yyscanner);
+static int yy_get_next_buffer (yyscan_t yyscanner );
+static void yy_fatal_error (yyconst char msg[] ,yyscan_t yyscanner );
+
+/* Done after the current pattern has been matched and before the
+ * corresponding action - sets up yytext.
+ */
+#define YY_DO_BEFORE_ACTION \
+        yyg->yytext_ptr = yy_bp; \
+        yyleng = (yy_size_t) (yy_cp - yy_bp); \
+        yyg->yy_hold_char = *yy_cp; \
+        *yy_cp = '\0'; \
+        yyg->yy_c_buf_p = yy_cp;
+
+#define YY_NUM_RULES 80
+#define YY_END_OF_BUFFER 81
+/* This struct is not used in this scanner,
+   but its presence is necessary. */
+struct yy_trans_info
+        {
+        flex_int32_t yy_verify;
+        flex_int32_t yy_nxt;
+        };
+static yyconst flex_int16_t yy_accept[185] =
+    {   0,
+        0,    0,   81,   79,   78,   78,   52,   79,   27,   43,
+       48,   29,   30,   41,   39,   36,   40,   35,   42,    4,
+       54,   75,   59,   55,   58,   53,   33,   34,   47,   27,
+       27,   27,   27,   27,   27,   27,   27,   27,   27,   27,
+       27,   27,   27,   27,   27,   31,   46,   32,   78,   57,
+       28,   27,   66,   51,   71,   64,   37,   62,   38,   63,
+        1,    0,   76,   65,    2,    4,    0,   44,   61,   56,
+       60,   45,   70,   50,   27,   27,   27,   11,   27,   27,
+       27,   27,    7,   16,   27,   27,   27,   27,   27,   27,
+       27,   27,   27,   27,   69,   49,   28,   74,    0,    0,
+
+        0,   76,    1,    0,    0,    3,   67,   68,   73,   27,
+       27,   27,   27,   27,    9,   27,   27,   27,   27,   27,
+       17,   27,   27,   27,   27,   27,   27,   72,    0,    1,
+       77,    0,    0,    2,   27,   27,   27,   27,    8,   27,
+       27,   27,   27,   21,   27,   27,   27,   27,    5,   27,
+       27,    0,    1,   12,   20,   27,   27,    6,   23,   18,
+       27,   27,   27,   27,   27,   27,   10,   27,   27,   25,
+       27,   27,   15,   24,   27,   27,   14,   22,   27,   19,
+       13,   27,   26,    0
+    } ;
+
+static yyconst flex_int32_t yy_ec[256] =
+    {   0,
+        1,    1,    1,    1,    1,    1,    1,    1,    2,    3,
+        1,    1,    2,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    2,    4,    1,    5,    6,    7,    8,    1,    9,
+       10,   11,   12,   13,   14,   15,   16,   17,   17,   17,
+       17,   17,   17,   17,   17,   17,   17,   18,   19,   20,
+       21,   22,   23,    1,    6,    6,    6,    6,   24,    6,
+        6,    6,    6,    6,    6,    6,    6,    6,    6,    6,
+        6,    6,    6,    6,    6,    6,    6,    6,    6,    6,
+       25,    1,   26,   27,    6,    1,   28,   29,   30,   31,
+
+       32,   33,   34,   35,   36,    6,   37,   38,   39,   40,
+       41,   42,    6,   43,   44,   45,   46,    6,   47,    6,
+       48,    6,   49,   50,   51,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1
+    } ;
+
+static yyconst flex_int32_t yy_meta[52] =
+    {   0,
+        1,    1,    2,    1,    1,    3,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    4,    1,    1,    1,
+        1,    1,    1,    3,    1,    1,    1,    3,    3,    3,
+        3,    3,    3,    3,    3,    3,    3,    3,    3,    3,
+        3,    3,    3,    3,    3,    3,    3,    3,    1,    1,
+        1
+    } ;
+
+static yyconst flex_int16_t yy_base[190] =
+    {   0,
+        0,    0,  222,  223,   50,   52,  200,    0,    0,  199,
+       48,  223,  223,  198,   45,  223,   44,  201,   51,   44,
+      223,  223,   43,  196,   49,  223,  223,  223,   52,  173,
+      174,   39,  176,   46,  177,   44,   50,  180,  165,  167,
+      177,  163,  164,  166,  170,  223,   39,  223,   79,  223,
+        0,    0,  223,  183,  223,  223,  223,  223,  223,  223,
+       66,  192,    0,  223,   68,   71,   82,  181,  223,  223,
+      223,  180,  223,  179,  167,  158,  153,    0,  152,  157,
+      151,  159,    0,  151,  143,  143,  158,  143,  155,  141,
+      142,  138,  147,  146,  223,  160,    0,  223,   90,  169,
+
+      163,    0,   84,   97,  161,  160,  223,  223,  223,  148,
+       61,  145,  142,  129,    0,  137,  125,  129,  127,  132,
+        0,  137,  120,  119,  132,  130,  124,  223,  144,  143,
+      223,   98,  142,  141,  120,  111,  119,  126,    0,  121,
+      110,  106,  104,    0,  103,  112,  104,  116,    0,  104,
+      112,  126,  125,    0,    0,  101,   97,    0,    0,    0,
+       94,   99,   93,   96,   90,   91,    0,   87,  101,    0,
+       89,   94,    0,    0,   90,   94,    0,    0,   72,    0,
+        0,   57,    0,  223,   90,  114,  116,  120,  124
+    } ;
+
+static yyconst flex_int16_t yy_def[190] =
+    {   0,
+      184,    1,  184,  184,  184,  184,  184,  185,  186,  184,
+      184,  184,  184,  184,  184,  184,  184,  184,  184,  184,
+      184,  184,  184,  184,  184,  184,  184,  184,  184,  186,
+      186,  186,  186,  186,  186,  186,  186,  186,  186,  186,
+      186,  186,  186,  186,  186,  184,  184,  184,  184,  184,
+      187,  186,  184,  184,  184,  184,  184,  184,  184,  184,
+      184,  188,  189,  184,  184,  184,  184,  184,  184,  184,
+      184,  184,  184,  184,  186,  186,  186,  186,  186,  186,
+      186,  186,  186,  186,  186,  186,  186,  186,  186,  186,
+      186,  186,  186,  186,  184,  184,  187,  184,  184,  188,
+
+      188,  189,  184,  184,  184,  184,  184,  184,  184,  186,
+      186,  186,  186,  186,  186,  186,  186,  186,  186,  186,
+      186,  186,  186,  186,  186,  186,  186,  184,  184,  184,
+      184,  184,  184,  184,  186,  186,  186,  186,  186,  186,
+      186,  186,  186,  186,  186,  186,  186,  186,  186,  186,
+      186,  184,  184,  186,  186,  186,  186,  186,  186,  186,
+      186,  186,  186,  186,  186,  186,  186,  186,  186,  186,
+      186,  186,  186,  186,  186,  186,  186,  186,  186,  186,
+      186,  186,  186,    0,  184,  184,  184,  184,  184
+    } ;
+
+static yyconst flex_int16_t yy_nxt[275] =
+    {   0,
+        4,    5,    6,    7,    8,    9,   10,   11,   12,   13,
+       14,   15,   16,   17,   18,   19,   20,   21,   22,   23,
+       24,   25,   26,    9,   27,   28,   29,    9,   30,   31,
+       32,   33,   34,    9,   35,   36,    9,   37,   38,    9,
+       39,   40,   41,   42,   43,   44,   45,    9,   46,   47,
+       48,   49,   49,   49,   49,   54,   57,   59,   65,   95,
+       66,   62,   68,   69,   60,   58,   63,   67,   55,   71,
+       72,   64,   73,   80,   77,   67,   83,   85,   74,   78,
+       49,   49,   61,   84,  103,   65,   81,   66,   96,   99,
+       86,  104,   51,  105,   67,  105,  183,   99,  106,  104,
+
+      103,  129,   67,  129,  136,  137,  130,  132,  133,  152,
+      133,  152,  182,  134,  153,  132,   52,   52,   97,   97,
+      100,  100,  100,  100,  102,  181,  102,  102,  180,  179,
+      178,  177,  176,  175,  174,  173,  172,  171,  170,  169,
+      168,  153,  153,  167,  166,  165,  164,  163,  162,  161,
+      160,  159,  158,  157,  156,  155,  154,  134,  134,  130,
+      130,  151,  150,  149,  148,  147,  146,  145,  144,  143,
+      142,  141,  140,  139,  138,  135,  106,  106,  131,  101,
+      128,  127,  126,  125,  124,  123,  122,  121,  120,  119,
+      118,  117,  116,  115,  114,  113,  112,  111,  110,  109,
+
+      108,  107,  101,   98,   94,   93,   92,   91,   90,   89,
+       88,   87,   82,   79,   76,   75,   70,   61,   56,   53,
+       50,  184,    3,  184,  184,  184,  184,  184,  184,  184,
+      184,  184,  184,  184,  184,  184,  184,  184,  184,  184,
+      184,  184,  184,  184,  184,  184,  184,  184,  184,  184,
+      184,  184,  184,  184,  184,  184,  184,  184,  184,  184,
+      184,  184,  184,  184,  184,  184,  184,  184,  184,  184,
+      184,  184,  184,  184
+    } ;
+
+static yyconst flex_int16_t yy_chk[275] =
+    {   0,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    5,    5,    6,    6,   11,   15,   17,   20,   47,
+       20,   19,   23,   23,   17,   15,   19,   20,   11,   25,
+       25,   19,   29,   34,   32,   20,   36,   37,   29,   32,
+       49,   49,   61,   36,   65,   66,   34,   66,   47,   61,
+       37,   65,  185,   67,   66,   67,  182,   61,   67,   65,
+
+      103,   99,   66,   99,  111,  111,   99,  103,  104,  132,
+      104,  132,  179,  104,  132,  103,  186,  186,  187,  187,
+      188,  188,  188,  188,  189,  176,  189,  189,  175,  172,
+      171,  169,  168,  166,  165,  164,  163,  162,  161,  157,
+      156,  153,  152,  151,  150,  148,  147,  146,  145,  143,
+      142,  141,  140,  138,  137,  136,  135,  134,  133,  130,
+      129,  127,  126,  125,  124,  123,  122,  120,  119,  118,
+      117,  116,  114,  113,  112,  110,  106,  105,  101,  100,
+       96,   94,   93,   92,   91,   90,   89,   88,   87,   86,
+       85,   84,   82,   81,   80,   79,   77,   76,   75,   74,
+
+       72,   68,   62,   54,   45,   44,   43,   42,   41,   40,
+       39,   38,   35,   33,   31,   30,   24,   18,   14,   10,
+        7,    3,  184,  184,  184,  184,  184,  184,  184,  184,
+      184,  184,  184,  184,  184,  184,  184,  184,  184,  184,
+      184,  184,  184,  184,  184,  184,  184,  184,  184,  184,
+      184,  184,  184,  184,  184,  184,  184,  184,  184,  184,
+      184,  184,  184,  184,  184,  184,  184,  184,  184,  184,
+      184,  184,  184,  184
+    } ;
+
+/* Table of booleans, true if rule could match eol. */
+static yyconst flex_int32_t yy_rule_can_match_eol[81] =
+    {   0,
+0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 
+    0,     };
+
+/* The intent behind this definition is that it'll catch
+ * any uses of REJECT which flex missed.
+ */
+#define REJECT reject_used_but_not_detected
+#define yymore() yymore_used_but_not_detected
+#define YY_MORE_ADJ 0
+#define YY_RESTORE_YY_MORE_OFFSET
+#line 1 "sksl.flex"
+/*
+
+        This file is IGNORED during the build process!
+
+        As this file is updated so infrequently and flex is not universally present on build machines,
+        the lex.sksl.c file must be manually regenerated if you make any changes to this file. Just run:
+
+                flex sksl.flex
+
+*/
+#define YY_NO_UNISTD_H 1
+#line 582 "lex.sksl.c"
+
+#define INITIAL 0
+
+#ifndef YY_NO_UNISTD_H
+/* Special case for "unistd.h", since it is non-ANSI. We include it way
+ * down here because we want the user's section 1 to have been scanned first.
+ * The user has a chance to override it with an option.
+ */
+#include <unistd.h>
+#endif
+
+#ifndef YY_EXTRA_TYPE
+#define YY_EXTRA_TYPE void *
+#endif
+
+/* Holds the entire state of the reentrant scanner. */
+struct yyguts_t
+    {
+
+    /* User-defined. Not touched by flex. */
+    YY_EXTRA_TYPE yyextra_r;
+
+    /* The rest are the same as the globals declared in the non-reentrant scanner. */
+    FILE *yyin_r, *yyout_r;
+    size_t yy_buffer_stack_top; /**< index of top of stack. */
+    size_t yy_buffer_stack_max; /**< capacity of stack. */
+    YY_BUFFER_STATE * yy_buffer_stack; /**< Stack as an array. */
+    char yy_hold_char;
+    yy_size_t yy_n_chars;
+    yy_size_t yyleng_r;
+    char *yy_c_buf_p;
+    int yy_init;
+    int yy_start;
+    int yy_did_buffer_switch_on_eof;
+    int yy_start_stack_ptr;
+    int yy_start_stack_depth;
+    int *yy_start_stack;
+    yy_state_type yy_last_accepting_state;
+    char* yy_last_accepting_cpos;
+
+    int yylineno_r;
+    int yy_flex_debug_r;
+
+    char *yytext_r;
+    int yy_more_flag;
+    int yy_more_len;
+
+    }; /* end struct yyguts_t */
+
+static int yy_init_globals (yyscan_t yyscanner );
+
+int sksllex_init (yyscan_t* scanner);
+
+int sksllex_init_extra (YY_EXTRA_TYPE user_defined,yyscan_t* scanner);
+
+/* Accessor methods to globals.
+   These are made visible to non-reentrant scanners for convenience. */
+
+int sksllex_destroy (yyscan_t yyscanner );
+
+int skslget_debug (yyscan_t yyscanner );
+
+void skslset_debug (int debug_flag ,yyscan_t yyscanner );
+
+YY_EXTRA_TYPE skslget_extra (yyscan_t yyscanner );
+
+void skslset_extra (YY_EXTRA_TYPE user_defined ,yyscan_t yyscanner );
+
+FILE *skslget_in (yyscan_t yyscanner );
+
+void skslset_in  (FILE * in_str ,yyscan_t yyscanner );
+
+FILE *skslget_out (yyscan_t yyscanner );
+
+void skslset_out  (FILE * out_str ,yyscan_t yyscanner );
+
+yy_size_t skslget_leng (yyscan_t yyscanner );
+
+char *skslget_text (yyscan_t yyscanner );
+
+int skslget_lineno (yyscan_t yyscanner );
+
+void skslset_lineno (int line_number ,yyscan_t yyscanner );
+
+/* Macros after this point can all be overridden by user definitions in
+ * section 1.
+ */
+
+#ifndef YY_SKIP_YYWRAP
+#ifdef __cplusplus
+extern "C" int skslwrap (yyscan_t yyscanner );
+#else
+extern int skslwrap (yyscan_t yyscanner );
+#endif
+#endif
+
+    static void yyunput (int c,char *buf_ptr  ,yyscan_t yyscanner);
+    
+#ifndef yytext_ptr
+static void yy_flex_strncpy (char *,yyconst char *,int ,yyscan_t yyscanner);
+#endif
+
+#ifdef YY_NEED_STRLEN
+static int yy_flex_strlen (yyconst char * ,yyscan_t yyscanner);
+#endif
+
+#ifndef YY_NO_INPUT
+
+#ifdef __cplusplus
+static int yyinput (yyscan_t yyscanner );
+#else
+static int input (yyscan_t yyscanner );
+#endif
+
+#endif
+
+/* Amount of stuff to slurp up with each read. */
+#ifndef YY_READ_BUF_SIZE
+#define YY_READ_BUF_SIZE 8192
+#endif
+
+/* Copy whatever the last rule matched to the standard output. */
+#ifndef ECHO
+/* This used to be an fputs(), but since the string might contain NUL's,
+ * we now use fwrite().
+ */
+#define ECHO fwrite( yytext, yyleng, 1, yyout )
+#endif
+
+/* Gets input and stuffs it into "buf".  number of characters read, or YY_NULL,
+ * is returned in "result".
+ */
+#ifndef YY_INPUT
+#define YY_INPUT(buf,result,max_size) \
+        if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \
+                { \
+                int c = '*'; \
+                yy_size_t n; \
+                for ( n = 0; n < max_size && \
+                             (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
+                        buf[n] = (char) c; \
+                if ( c == '\n' ) \
+                        buf[n++] = (char) c; \
+                if ( c == EOF && ferror( yyin ) ) \
+                        YY_FATAL_ERROR( "input in flex scanner failed" ); \
+                result = n; \
+                } \
+        else \
+                { \
+                errno=0; \
+                while ( (result = fread(buf, 1, max_size, yyin))==0 && ferror(yyin)) \
+                        { \
+                        if( errno != EINTR) \
+                                { \
+                                YY_FATAL_ERROR( "input in flex scanner failed" ); \
+                                break; \
+                                } \
+                        errno=0; \
+                        clearerr(yyin); \
+                        } \
+                }\
+\
+
+#endif
+
+/* No semi-colon after return; correct usage is to write "yyterminate();" -
+ * we don't want an extra ';' after the "return" because that will cause
+ * some compilers to complain about unreachable statements.
+ */
+#ifndef yyterminate
+#define yyterminate() return YY_NULL
+#endif
+
+/* Number of entries by which start-condition stack grows. */
+#ifndef YY_START_STACK_INCR
+#define YY_START_STACK_INCR 25
+#endif
+
+/* Report a fatal error. */
+#ifndef YY_FATAL_ERROR
+#define YY_FATAL_ERROR(msg) yy_fatal_error( msg , yyscanner)
+#endif
+
+/* end tables serialization structures and prototypes */
+
+/* Default declaration of generated scanner - a define so the user can
+ * easily add parameters.
+ */
+#ifndef YY_DECL
+#define YY_DECL_IS_OURS 1
+
+extern int sksllex (yyscan_t yyscanner);
+
+#define YY_DECL int sksllex (yyscan_t yyscanner)
+#endif /* !YY_DECL */
+
+/* Code executed at the beginning of each rule, after yytext and yyleng
+ * have been set up.
+ */
+#ifndef YY_USER_ACTION
+#define YY_USER_ACTION
+#endif
+
+/* Code executed at the end of each rule. */
+#ifndef YY_BREAK
+#define YY_BREAK break;
+#endif
+
+#define YY_RULE_SETUP \
+        YY_USER_ACTION
+
+/** The main scanner function which does all the work.
+ */
+YY_DECL
+{
+        register yy_state_type yy_current_state;
+        register char *yy_cp, *yy_bp;
+        register int yy_act;
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+#line 21 "sksl.flex"
+
+
+#line 806 "lex.sksl.c"
+
+        if ( !yyg->yy_init )
+                {
+                yyg->yy_init = 1;
+
+#ifdef YY_USER_INIT
+                YY_USER_INIT;
+#endif
+
+                if ( ! yyg->yy_start )
+                        yyg->yy_start = 1;      /* first start state */
+
+                if ( ! yyin )
+                        yyin = stdin;
+
+                if ( ! yyout )
+                        yyout = stdout;
+
+                if ( ! YY_CURRENT_BUFFER ) {
+                        skslensure_buffer_stack (yyscanner);
+                        YY_CURRENT_BUFFER_LVALUE =
+                                sksl_create_buffer(yyin,YY_BUF_SIZE ,yyscanner);
+                }
+
+                sksl_load_buffer_state(yyscanner );
+                }
+
+        while ( 1 )             /* loops until end-of-file is reached */
+                {
+                yy_cp = yyg->yy_c_buf_p;
+
+                /* Support of yytext. */
+                *yy_cp = yyg->yy_hold_char;
+
+                /* yy_bp points to the position in yy_ch_buf of the start of
+                 * the current run.
+                 */
+                yy_bp = yy_cp;
+
+                yy_current_state = yyg->yy_start;
+yy_match:
+                do
+                        {
+                        register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)];
+                        if ( yy_accept[yy_current_state] )
+                                {
+                                yyg->yy_last_accepting_state = yy_current_state;
+                                yyg->yy_last_accepting_cpos = yy_cp;
+                                }
+                        while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+                                {
+                                yy_current_state = (int) yy_def[yy_current_state];
+                                if ( yy_current_state >= 185 )
+                                        yy_c = yy_meta[(unsigned int) yy_c];
+                                }
+                        yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
+                        ++yy_cp;
+                        }
+                while ( yy_current_state != 184 );
+                yy_cp = yyg->yy_last_accepting_cpos;
+                yy_current_state = yyg->yy_last_accepting_state;
+
+yy_find_action:
+                yy_act = yy_accept[yy_current_state];
+
+                YY_DO_BEFORE_ACTION;
+
+                if ( yy_act != YY_END_OF_BUFFER && yy_rule_can_match_eol[yy_act] )
+                        {
+                        yy_size_t yyl;
+                        for ( yyl = 0; yyl < yyleng; ++yyl )
+                                if ( yytext[yyl] == '\n' )
+                                           
+    do{ yylineno++;
+        yycolumn=0;
+    }while(0)
+;
+                        }
+
+do_action:      /* This label is used only to access EOF actions. */
+
+                switch ( yy_act )
+        { /* beginning of action switch */
+                        case 0: /* must back up */
+                        /* undo the effects of YY_DO_BEFORE_ACTION */
+                        *yy_cp = yyg->yy_hold_char;
+                        yy_cp = yyg->yy_last_accepting_cpos;
+                        yy_current_state = yyg->yy_last_accepting_state;
+                        goto yy_find_action;
+
+case 1:
+YY_RULE_SETUP
+#line 23 "sksl.flex"
+{ return SkSL::Token::FLOAT_LITERAL; }
+        YY_BREAK
+case 2:
+YY_RULE_SETUP
+#line 25 "sksl.flex"
+{ return SkSL::Token::FLOAT_LITERAL; }
+        YY_BREAK
+case 3:
+YY_RULE_SETUP
+#line 27 "sksl.flex"
+{ return SkSL::Token::FLOAT_LITERAL; }
+        YY_BREAK
+case 4:
+YY_RULE_SETUP
+#line 29 "sksl.flex"
+{ return SkSL::Token::INT_LITERAL; }
+        YY_BREAK
+case 5:
+YY_RULE_SETUP
+#line 31 "sksl.flex"
+{ return SkSL::Token::TRUE_LITERAL; }
+        YY_BREAK
+case 6:
+YY_RULE_SETUP
+#line 33 "sksl.flex"
+{ return SkSL::Token::FALSE_LITERAL; }
+        YY_BREAK
+case 7:
+YY_RULE_SETUP
+#line 35 "sksl.flex"
+{ return SkSL::Token::IF; }
+        YY_BREAK
+case 8:
+YY_RULE_SETUP
+#line 37 "sksl.flex"
+{ return SkSL::Token::ELSE; }
+        YY_BREAK
+case 9:
+YY_RULE_SETUP
+#line 39 "sksl.flex"
+{ return SkSL::Token::FOR; }
+        YY_BREAK
+case 10:
+YY_RULE_SETUP
+#line 41 "sksl.flex"
+{ return SkSL::Token::WHILE; }
+        YY_BREAK
+case 11:
+YY_RULE_SETUP
+#line 43 "sksl.flex"
+{ return SkSL::Token::DO; }
+        YY_BREAK
+case 12:
+YY_RULE_SETUP
+#line 45 "sksl.flex"
+{ return SkSL::Token::BREAK; }
+        YY_BREAK
+case 13:
+YY_RULE_SETUP
+#line 47 "sksl.flex"
+{ return SkSL::Token::CONTINUE; }
+        YY_BREAK
+case 14:
+YY_RULE_SETUP
+#line 49 "sksl.flex"
+{ return SkSL::Token::DISCARD; }
+        YY_BREAK
+case 15:
+YY_RULE_SETUP
+#line 51 "sksl.flex"
+{ return SkSL::Token::RETURN; }
+        YY_BREAK
+case 16:
+YY_RULE_SETUP
+#line 53 "sksl.flex"
+{ return SkSL::Token::IN; }
+        YY_BREAK
+case 17:
+YY_RULE_SETUP
+#line 55 "sksl.flex"
+{ return SkSL::Token::OUT; }
+        YY_BREAK
+case 18:
+YY_RULE_SETUP
+#line 57 "sksl.flex"
+{ return SkSL::Token::INOUT; }
+        YY_BREAK
+case 19:
+YY_RULE_SETUP
+#line 59 "sksl.flex"
+{ return SkSL::Token::UNIFORM; }
+        YY_BREAK
+case 20:
+YY_RULE_SETUP
+#line 61 "sksl.flex"
+{ return SkSL::Token::CONST; }
+        YY_BREAK
+case 21:
+YY_RULE_SETUP
+#line 63 "sksl.flex"
+{ return SkSL::Token::LOWP; }
+        YY_BREAK
+case 22:
+YY_RULE_SETUP
+#line 65 "sksl.flex"
+{ return SkSL::Token::MEDIUMP; }
+        YY_BREAK
+case 23:
+YY_RULE_SETUP
+#line 67 "sksl.flex"
+{ return SkSL::Token::HIGHP; }
+        YY_BREAK
+case 24:
+YY_RULE_SETUP
+#line 69 "sksl.flex"
+{ return SkSL::Token::STRUCT; }
+        YY_BREAK
+case 25:
+YY_RULE_SETUP
+#line 71 "sksl.flex"
+{ return SkSL::Token::LAYOUT; }
+        YY_BREAK
+case 26:
+YY_RULE_SETUP
+#line 73 "sksl.flex"
+{ return SkSL::Token::PRECISION; }
+        YY_BREAK
+case 27:
+YY_RULE_SETUP
+#line 75 "sksl.flex"
+{ return SkSL::Token::IDENTIFIER; }
+        YY_BREAK
+case 28:
+YY_RULE_SETUP
+#line 77 "sksl.flex"
+{ return SkSL::Token::DIRECTIVE; }
+        YY_BREAK
+case 29:
+YY_RULE_SETUP
+#line 79 "sksl.flex"
+{ return SkSL::Token::LPAREN; }
+        YY_BREAK
+case 30:
+YY_RULE_SETUP
+#line 81 "sksl.flex"
+{ return SkSL::Token::RPAREN; }
+        YY_BREAK
+case 31:
+YY_RULE_SETUP
+#line 83 "sksl.flex"
+{ return SkSL::Token::LBRACE; }
+        YY_BREAK
+case 32:
+YY_RULE_SETUP
+#line 85 "sksl.flex"
+{ return SkSL::Token::RBRACE; }
+        YY_BREAK
+case 33:
+YY_RULE_SETUP
+#line 87 "sksl.flex"
+{ return SkSL::Token::LBRACKET; }
+        YY_BREAK
+case 34:
+YY_RULE_SETUP
+#line 89 "sksl.flex"
+{ return SkSL::Token::RBRACKET; }
+        YY_BREAK
+case 35:
+YY_RULE_SETUP
+#line 91 "sksl.flex"
+{ return SkSL::Token::DOT; }
+        YY_BREAK
+case 36:
+YY_RULE_SETUP
+#line 93 "sksl.flex"
+{ return SkSL::Token::COMMA; }
+        YY_BREAK
+case 37:
+YY_RULE_SETUP
+#line 95 "sksl.flex"
+{ return SkSL::Token::PLUSPLUS; }
+        YY_BREAK
+case 38:
+YY_RULE_SETUP
+#line 97 "sksl.flex"
+{ return SkSL::Token::MINUSMINUS; }
+        YY_BREAK
+case 39:
+YY_RULE_SETUP
+#line 99 "sksl.flex"
+{ return SkSL::Token::PLUS; }
+        YY_BREAK
+case 40:
+YY_RULE_SETUP
+#line 101 "sksl.flex"
+{ return SkSL::Token::MINUS; }
+        YY_BREAK
+case 41:
+YY_RULE_SETUP
+#line 103 "sksl.flex"
+{ return SkSL::Token::STAR; }
+        YY_BREAK
+case 42:
+YY_RULE_SETUP
+#line 105 "sksl.flex"
+{ return SkSL::Token::SLASH; }
+        YY_BREAK
+case 43:
+YY_RULE_SETUP
+#line 107 "sksl.flex"
+{ return SkSL::Token::PERCENT; }
+        YY_BREAK
+case 44:
+YY_RULE_SETUP
+#line 109 "sksl.flex"
+{ return SkSL::Token::SHL; }
+        YY_BREAK
+case 45:
+YY_RULE_SETUP
+#line 111 "sksl.flex"
+{ return SkSL::Token::SHR; }
+        YY_BREAK
+case 46:
+YY_RULE_SETUP
+#line 113 "sksl.flex"
+{ return SkSL::Token::BITWISEOR; }
+        YY_BREAK
+case 47:
+YY_RULE_SETUP
+#line 115 "sksl.flex"
+{ return SkSL::Token::BITWISEXOR; }
+        YY_BREAK
+case 48:
+YY_RULE_SETUP
+#line 117 "sksl.flex"
+{ return SkSL::Token::BITWISEAND; }
+        YY_BREAK
+case 49:
+YY_RULE_SETUP
+#line 119 "sksl.flex"
+{ return SkSL::Token::LOGICALOR; }
+        YY_BREAK
+case 50:
+YY_RULE_SETUP
+#line 121 "sksl.flex"
+{ return SkSL::Token::LOGICALXOR; }
+        YY_BREAK
+case 51:
+YY_RULE_SETUP
+#line 123 "sksl.flex"
+{ return SkSL::Token::LOGICALAND; }
+        YY_BREAK
+case 52:
+YY_RULE_SETUP
+#line 125 "sksl.flex"
+{ return SkSL::Token::NOT; }
+        YY_BREAK
+case 53:
+YY_RULE_SETUP
+#line 127 "sksl.flex"
+{ return SkSL::Token::QUESTION; }
+        YY_BREAK
+case 54:
+YY_RULE_SETUP
+#line 129 "sksl.flex"
+{ return SkSL::Token::COLON; }
+        YY_BREAK
+case 55:
+YY_RULE_SETUP
+#line 131 "sksl.flex"
+{ return SkSL::Token::EQ; }
+        YY_BREAK
+case 56:
+YY_RULE_SETUP
+#line 133 "sksl.flex"
+{ return SkSL::Token::EQEQ; }
+        YY_BREAK
+case 57:
+YY_RULE_SETUP
+#line 135 "sksl.flex"
+{ return SkSL::Token::NEQ; }
+        YY_BREAK
+case 58:
+YY_RULE_SETUP
+#line 137 "sksl.flex"
+{ return SkSL::Token::GT; }
+        YY_BREAK
+case 59:
+YY_RULE_SETUP
+#line 139 "sksl.flex"
+{ return SkSL::Token::LT; }
+        YY_BREAK
+case 60:
+YY_RULE_SETUP
+#line 141 "sksl.flex"
+{ return SkSL::Token::GTEQ; }
+        YY_BREAK
+case 61:
+YY_RULE_SETUP
+#line 143 "sksl.flex"
+{ return SkSL::Token::LTEQ; }
+        YY_BREAK
+case 62:
+YY_RULE_SETUP
+#line 145 "sksl.flex"
+{ return SkSL::Token::PLUSEQ; }
+        YY_BREAK
+case 63:
+YY_RULE_SETUP
+#line 147 "sksl.flex"
+{ return SkSL::Token::MINUSEQ; }
+        YY_BREAK
+case 64:
+YY_RULE_SETUP
+#line 149 "sksl.flex"
+{ return SkSL::Token::STAREQ; }
+        YY_BREAK
+case 65:
+YY_RULE_SETUP
+#line 151 "sksl.flex"
+{ return SkSL::Token::SLASHEQ; }
+        YY_BREAK
+case 66:
+YY_RULE_SETUP
+#line 153 "sksl.flex"
+{ return SkSL::Token::PERCENTEQ; }
+        YY_BREAK
+case 67:
+YY_RULE_SETUP
+#line 155 "sksl.flex"
+{ return SkSL::Token::SHLEQ; }
+        YY_BREAK
+case 68:
+YY_RULE_SETUP
+#line 157 "sksl.flex"
+{ return SkSL::Token::SHREQ; }
+        YY_BREAK
+case 69:
+YY_RULE_SETUP
+#line 159 "sksl.flex"
+{ return SkSL::Token::BITWISEOREQ; }
+        YY_BREAK
+case 70:
+YY_RULE_SETUP
+#line 161 "sksl.flex"
+{ return SkSL::Token::BITWISEXOREQ; }
+        YY_BREAK
+case 71:
+YY_RULE_SETUP
+#line 163 "sksl.flex"
+{ return SkSL::Token::BITWISEANDEQ; }
+        YY_BREAK
+case 72:
+YY_RULE_SETUP
+#line 165 "sksl.flex"
+{ return SkSL::Token::LOGICALOREQ; }
+        YY_BREAK
+case 73:
+YY_RULE_SETUP
+#line 167 "sksl.flex"
+{ return SkSL::Token::LOGICALXOREQ; }
+        YY_BREAK
+case 74:
+YY_RULE_SETUP
+#line 169 "sksl.flex"
+{ return SkSL::Token::LOGICALANDEQ; }
+        YY_BREAK
+case 75:
+YY_RULE_SETUP
+#line 171 "sksl.flex"
+{ return SkSL::Token::SEMICOLON; }
+        YY_BREAK
+case 76:
+YY_RULE_SETUP
+#line 173 "sksl.flex"
+/* line comment */
+        YY_BREAK
+case 77:
+/* rule 77 can match eol */
+YY_RULE_SETUP
+#line 175 "sksl.flex"
+/* block comment */
+        YY_BREAK
+case 78:
+/* rule 78 can match eol */
+YY_RULE_SETUP
+#line 177 "sksl.flex"
+/* whitespace */
+        YY_BREAK
+case 79:
+YY_RULE_SETUP
+#line 179 "sksl.flex"
+{ return SkSL::Token::INVALID_TOKEN; }
+        YY_BREAK
+case 80:
+YY_RULE_SETUP
+#line 181 "sksl.flex"
+ECHO;
+        YY_BREAK
+#line 1299 "lex.sksl.c"
+case YY_STATE_EOF(INITIAL):
+        yyterminate();
+
+        case YY_END_OF_BUFFER:
+                {
+                /* Amount of text matched not including the EOB char. */
+                int yy_amount_of_matched_text = (int) (yy_cp - yyg->yytext_ptr) - 1;
+
+                /* Undo the effects of YY_DO_BEFORE_ACTION. */
+                *yy_cp = yyg->yy_hold_char;
+                YY_RESTORE_YY_MORE_OFFSET
+
+                if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_NEW )
+                        {
+                        /* We're scanning a new file or input source.  It's
+                         * possible that this happened because the user
+                         * just pointed yyin at a new source and called
+                         * sksllex().  If so, then we have to assure
+                         * consistency between YY_CURRENT_BUFFER and our
+                         * globals.  Here is the right place to do so, because
+                         * this is the first action (other than possibly a
+                         * back-up) that will match for the new input source.
+                         */
+                        yyg->yy_n_chars = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
+                        YY_CURRENT_BUFFER_LVALUE->yy_input_file = yyin;
+                        YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = YY_BUFFER_NORMAL;
+                        }
+
+                /* Note that here we test for yy_c_buf_p "<=" to the position
+                 * of the first EOB in the buffer, since yy_c_buf_p will
+                 * already have been incremented past the NUL character
+                 * (since all states make transitions on EOB to the
+                 * end-of-buffer state).  Contrast this with the test
+                 * in input().
+                 */
+                if ( yyg->yy_c_buf_p <= &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars] )
+                        { /* This was really a NUL. */
+                        yy_state_type yy_next_state;
+
+                        yyg->yy_c_buf_p = yyg->yytext_ptr + yy_amount_of_matched_text;
+
+                        yy_current_state = yy_get_previous_state( yyscanner );
+
+                        /* Okay, we're now positioned to make the NUL
+                         * transition.  We couldn't have
+                         * yy_get_previous_state() go ahead and do it
+                         * for us because it doesn't know how to deal
+                         * with the possibility of jamming (and we don't
+                         * want to build jamming into it because then it
+                         * will run more slowly).
+                         */
+
+                        yy_next_state = yy_try_NUL_trans( yy_current_state , yyscanner);
+
+                        yy_bp = yyg->yytext_ptr + YY_MORE_ADJ;
+
+                        if ( yy_next_state )
+                                {
+                                /* Consume the NUL. */
+                                yy_cp = ++yyg->yy_c_buf_p;
+                                yy_current_state = yy_next_state;
+                                goto yy_match;
+                                }
+
+                        else
+                                {
+                                yy_cp = yyg->yy_last_accepting_cpos;
+                                yy_current_state = yyg->yy_last_accepting_state;
+                                goto yy_find_action;
+                                }
+                        }
+
+                else switch ( yy_get_next_buffer( yyscanner ) )
+                        {
+                        case EOB_ACT_END_OF_FILE:
+                                {
+                                yyg->yy_did_buffer_switch_on_eof = 0;
+
+                                if ( skslwrap(yyscanner ) )
+                                        {
+                                        /* Note: because we've taken care in
+                                         * yy_get_next_buffer() to have set up
+                                         * yytext, we can now set up
+                                         * yy_c_buf_p so that if some total
+                                         * hoser (like flex itself) wants to
+                                         * call the scanner after we return the
+                                         * YY_NULL, it'll still work - another
+                                         * YY_NULL will get returned.
+                                         */
+                                        yyg->yy_c_buf_p = yyg->yytext_ptr + YY_MORE_ADJ;
+
+                                        yy_act = YY_STATE_EOF(YY_START);
+                                        goto do_action;
+                                        }
+
+                                else
+                                        {
+                                        if ( ! yyg->yy_did_buffer_switch_on_eof )
+                                                YY_NEW_FILE;
+                                        }
+                                break;
+                                }
+
+                        case EOB_ACT_CONTINUE_SCAN:
+                                yyg->yy_c_buf_p =
+                                        yyg->yytext_ptr + yy_amount_of_matched_text;
+
+                                yy_current_state = yy_get_previous_state( yyscanner );
+
+                                yy_cp = yyg->yy_c_buf_p;
+                                yy_bp = yyg->yytext_ptr + YY_MORE_ADJ;
+                                goto yy_match;
+
+                        case EOB_ACT_LAST_MATCH:
+                                yyg->yy_c_buf_p =
+                                &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars];
+
+                                yy_current_state = yy_get_previous_state( yyscanner );
+
+                                yy_cp = yyg->yy_c_buf_p;
+                                yy_bp = yyg->yytext_ptr + YY_MORE_ADJ;
+                                goto yy_find_action;
+                        }
+                break;
+                }
+
+        default:
+                YY_FATAL_ERROR(
+                        "fatal flex scanner internal error--no action found" );
+        } /* end of action switch */
+                } /* end of scanning one token */
+} /* end of sksllex */
+
+/* yy_get_next_buffer - try to read in a new buffer
+ *
+ * Returns a code representing an action:
+ *      EOB_ACT_LAST_MATCH -
+ *      EOB_ACT_CONTINUE_SCAN - continue scanning from current position
+ *      EOB_ACT_END_OF_FILE - end of file
+ */
+static int yy_get_next_buffer (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+        register char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
+        register char *source = yyg->yytext_ptr;
+        register int number_to_move, i;
+        int ret_val;
+
+        if ( yyg->yy_c_buf_p > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars + 1] )
+                YY_FATAL_ERROR(
+                "fatal flex scanner internal error--end of buffer missed" );
+
+        if ( YY_CURRENT_BUFFER_LVALUE->yy_fill_buffer == 0 )
+                { /* Don't try to fill the buffer, so this is an EOF. */
+                if ( yyg->yy_c_buf_p - yyg->yytext_ptr - YY_MORE_ADJ == 1 )
+                        {
+                        /* We matched a single character, the EOB, so
+                         * treat this as a final EOF.
+                         */
+                        return EOB_ACT_END_OF_FILE;
+                        }
+
+                else
+                        {
+                        /* We matched some text prior to the EOB, first
+                         * process it.
+                         */
+                        return EOB_ACT_LAST_MATCH;
+                        }
+                }
+
+        /* Try to read more data. */
+
+        /* First move last chars to start of buffer. */
+        number_to_move = (int) (yyg->yy_c_buf_p - yyg->yytext_ptr) - 1;
+
+        for ( i = 0; i < number_to_move; ++i )
+                *(dest++) = *(source++);
+
+        if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_EOF_PENDING )
+                /* don't do the read, it's not guaranteed to return an EOF,
+                 * just force an EOF
+                 */
+                YY_CURRENT_BUFFER_LVALUE->yy_n_chars = yyg->yy_n_chars = 0;
+
+        else
+                {
+                        yy_size_t num_to_read =
+                        YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1;
+
+                while ( num_to_read <= 0 )
+                        { /* Not enough room in the buffer - grow it. */
+
+                        /* just a shorter name for the current buffer */
+                        YY_BUFFER_STATE b = YY_CURRENT_BUFFER;
+
+                        int yy_c_buf_p_offset =
+                                (int) (yyg->yy_c_buf_p - b->yy_ch_buf);
+
+                        if ( b->yy_is_our_buffer )
+                                {
+                                yy_size_t new_size = b->yy_buf_size * 2;
+
+                                if ( new_size <= 0 )
+                                        b->yy_buf_size += b->yy_buf_size / 8;
+                                else
+                                        b->yy_buf_size *= 2;
+
+                                b->yy_ch_buf = (char *)
+                                        /* Include room in for 2 EOB chars. */
+                                        skslrealloc((void *) b->yy_ch_buf,b->yy_buf_size + 2 ,yyscanner );
+                                }
+                        else
+                                /* Can't grow it, we don't own it. */
+                                b->yy_ch_buf = 0;
+
+                        if ( ! b->yy_ch_buf )
+                                YY_FATAL_ERROR(
+                                "fatal error - scanner input buffer overflow" );
+
+                        yyg->yy_c_buf_p = &b->yy_ch_buf[yy_c_buf_p_offset];
+
+                        num_to_read = YY_CURRENT_BUFFER_LVALUE->yy_buf_size -
+                                                number_to_move - 1;
+
+                        }
+
+                if ( num_to_read > YY_READ_BUF_SIZE )
+                        num_to_read = YY_READ_BUF_SIZE;
+
+                /* Read in more data. */
+                YY_INPUT( (&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]),
+                        yyg->yy_n_chars, num_to_read );
+
+                YY_CURRENT_BUFFER_LVALUE->yy_n_chars = yyg->yy_n_chars;
+                }
+
+        if ( yyg->yy_n_chars == 0 )
+                {
+                if ( number_to_move == YY_MORE_ADJ )
+                        {
+                        ret_val = EOB_ACT_END_OF_FILE;
+                        skslrestart(yyin  ,yyscanner);
+                        }
+
+                else
+                        {
+                        ret_val = EOB_ACT_LAST_MATCH;
+                        YY_CURRENT_BUFFER_LVALUE->yy_buffer_status =
+                                YY_BUFFER_EOF_PENDING;
+                        }
+                }
+
+        else
+                ret_val = EOB_ACT_CONTINUE_SCAN;
+
+        if ((yy_size_t) (yyg->yy_n_chars + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
+                /* Extend the array by 50%, plus the number we really need. */
+                yy_size_t new_size = yyg->yy_n_chars + number_to_move + (yyg->yy_n_chars >> 1);
+                YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) skslrealloc((void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf,new_size ,yyscanner );
+                if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
+                        YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" );
+        }
+
+        yyg->yy_n_chars += number_to_move;
+        YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars] = YY_END_OF_BUFFER_CHAR;
+        YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars + 1] = YY_END_OF_BUFFER_CHAR;
+
+        yyg->yytext_ptr = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[0];
+
+        return ret_val;
+}
+
+/* yy_get_previous_state - get the state just before the EOB char was reached */
+
+    static yy_state_type yy_get_previous_state (yyscan_t yyscanner)
+{
+        register yy_state_type yy_current_state;
+        register char *yy_cp;
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+        yy_current_state = yyg->yy_start;
+
+        for ( yy_cp = yyg->yytext_ptr + YY_MORE_ADJ; yy_cp < yyg->yy_c_buf_p; ++yy_cp )
+                {
+                register YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1);
+                if ( yy_accept[yy_current_state] )
+                        {
+                        yyg->yy_last_accepting_state = yy_current_state;
+                        yyg->yy_last_accepting_cpos = yy_cp;
+                        }
+                while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+                        {
+                        yy_current_state = (int) yy_def[yy_current_state];
+                        if ( yy_current_state >= 185 )
+                                yy_c = yy_meta[(unsigned int) yy_c];
+                        }
+                yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
+                }
+
+        return yy_current_state;
+}
+
+/* yy_try_NUL_trans - try to make a transition on the NUL character
+ *
+ * synopsis
+ *      next_state = yy_try_NUL_trans( current_state );
+ */
+    static yy_state_type yy_try_NUL_trans  (yy_state_type yy_current_state , yyscan_t yyscanner)
+{
+        register int yy_is_jam;
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; /* This var may be unused depending upon options. */
+        register char *yy_cp = yyg->yy_c_buf_p;
+
+        register YY_CHAR yy_c = 1;
+        if ( yy_accept[yy_current_state] )
+                {
+                yyg->yy_last_accepting_state = yy_current_state;
+                yyg->yy_last_accepting_cpos = yy_cp;
+                }
+        while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+                {
+                yy_current_state = (int) yy_def[yy_current_state];
+                if ( yy_current_state >= 185 )
+                        yy_c = yy_meta[(unsigned int) yy_c];
+                }
+        yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
+        yy_is_jam = (yy_current_state == 184);
+
+        return yy_is_jam ? 0 : yy_current_state;
+}
+
+    static void yyunput (int c, register char * yy_bp , yyscan_t yyscanner)
+{
+        register char *yy_cp;
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+    yy_cp = yyg->yy_c_buf_p;
+
+        /* undo effects of setting up yytext */
+        *yy_cp = yyg->yy_hold_char;
+
+        if ( yy_cp < YY_CURRENT_BUFFER_LVALUE->yy_ch_buf + 2 )
+                { /* need to shift things up to make room */
+                /* +2 for EOB chars. */
+                register yy_size_t number_to_move = yyg->yy_n_chars + 2;
+                register char *dest = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[
+                                        YY_CURRENT_BUFFER_LVALUE->yy_buf_size + 2];
+                register char *source =
+                                &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move];
+
+                while ( source > YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
+                        *--dest = *--source;
+
+                yy_cp += (int) (dest - source);
+                yy_bp += (int) (dest - source);
+                YY_CURRENT_BUFFER_LVALUE->yy_n_chars =
+                        yyg->yy_n_chars = YY_CURRENT_BUFFER_LVALUE->yy_buf_size;
+
+                if ( yy_cp < YY_CURRENT_BUFFER_LVALUE->yy_ch_buf + 2 )
+                        YY_FATAL_ERROR( "flex scanner push-back overflow" );
+                }
+
+        *--yy_cp = (char) c;
+
+    if ( c == '\n' ){
+        --yylineno;
+    }
+
+        yyg->yytext_ptr = yy_bp;
+        yyg->yy_hold_char = *yy_cp;
+        yyg->yy_c_buf_p = yy_cp;
+}
+
+#ifndef YY_NO_INPUT
+#ifdef __cplusplus
+    static int yyinput (yyscan_t yyscanner)
+#else
+    static int input  (yyscan_t yyscanner)
+#endif
+
+{
+        int c;
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+        *yyg->yy_c_buf_p = yyg->yy_hold_char;
+
+        if ( *yyg->yy_c_buf_p == YY_END_OF_BUFFER_CHAR )
+                {
+                /* yy_c_buf_p now points to the character we want to return.
+                 * If this occurs *before* the EOB characters, then it's a
+                 * valid NUL; if not, then we've hit the end of the buffer.
+                 */
+                if ( yyg->yy_c_buf_p < &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars] )
+                        /* This was really a NUL. */
+                        *yyg->yy_c_buf_p = '\0';
+
+                else
+                        { /* need more input */
+                        yy_size_t offset = yyg->yy_c_buf_p - yyg->yytext_ptr;
+                        ++yyg->yy_c_buf_p;
+
+                        switch ( yy_get_next_buffer( yyscanner ) )
+                                {
+                                case EOB_ACT_LAST_MATCH:
+                                        /* This happens because yy_g_n_b()
+                                         * sees that we've accumulated a
+                                         * token and flags that we need to
+                                         * try matching the token before
+                                         * proceeding.  But for input(),
+                                         * there's no matching to consider.
+                                         * So convert the EOB_ACT_LAST_MATCH
+                                         * to EOB_ACT_END_OF_FILE.
+                                         */
+
+                                        /* Reset buffer status. */
+                                        skslrestart(yyin ,yyscanner);
+
+                                        /*FALLTHROUGH*/
+
+                                case EOB_ACT_END_OF_FILE:
+                                        {
+                                        if ( skslwrap(yyscanner ) )
+                                                return 0;
+
+                                        if ( ! yyg->yy_did_buffer_switch_on_eof )
+                                                YY_NEW_FILE;
+#ifdef __cplusplus
+                                        return yyinput(yyscanner);
+#else
+                                        return input(yyscanner);
+#endif
+                                        }
+
+                                case EOB_ACT_CONTINUE_SCAN:
+                                        yyg->yy_c_buf_p = yyg->yytext_ptr + offset;
+                                        break;
+                                }
+                        }
+                }
+
+        c = *(unsigned char *) yyg->yy_c_buf_p; /* cast for 8-bit char's */
+        *yyg->yy_c_buf_p = '\0';        /* preserve yytext */
+        yyg->yy_hold_char = *++yyg->yy_c_buf_p;
+
+        if ( c == '\n' )
+                   
+    do{ yylineno++;
+        yycolumn=0;
+    }while(0)
+;
+
+        return c;
+}
+#endif  /* ifndef YY_NO_INPUT */
+
+/** Immediately switch to a different input stream.
+ * @param input_file A readable stream.
+ * @param yyscanner The scanner object.
+ * @note This function does not reset the start condition to @c INITIAL .
+ */
+    void skslrestart  (FILE * input_file , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+        if ( ! YY_CURRENT_BUFFER ){
+        skslensure_buffer_stack (yyscanner);
+                YY_CURRENT_BUFFER_LVALUE =
+            sksl_create_buffer(yyin,YY_BUF_SIZE ,yyscanner);
+        }
+
+        sksl_init_buffer(YY_CURRENT_BUFFER,input_file ,yyscanner);
+        sksl_load_buffer_state(yyscanner );
+}
+
+/** Switch to a different input buffer.
+ * @param new_buffer The new input buffer.
+ * @param yyscanner The scanner object.
+ */
+    void sksl_switch_to_buffer  (YY_BUFFER_STATE  new_buffer , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+        /* TODO. We should be able to replace this entire function body
+         * with
+         *              skslpop_buffer_state();
+         *              skslpush_buffer_state(new_buffer);
+     */
+        skslensure_buffer_stack (yyscanner);
+        if ( YY_CURRENT_BUFFER == new_buffer )
+                return;
+
+        if ( YY_CURRENT_BUFFER )
+                {
+                /* Flush out information for old buffer. */
+                *yyg->yy_c_buf_p = yyg->yy_hold_char;
+                YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = yyg->yy_c_buf_p;
+                YY_CURRENT_BUFFER_LVALUE->yy_n_chars = yyg->yy_n_chars;
+                }
+
+        YY_CURRENT_BUFFER_LVALUE = new_buffer;
+        sksl_load_buffer_state(yyscanner );
+
+        /* We don't actually know whether we did this switch during
+         * EOF (skslwrap()) processing, but the only time this flag
+         * is looked at is after skslwrap() is called, so it's safe
+         * to go ahead and always set it.
+         */
+        yyg->yy_did_buffer_switch_on_eof = 1;
+}
+
+static void sksl_load_buffer_state  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+        yyg->yy_n_chars = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
+        yyg->yytext_ptr = yyg->yy_c_buf_p = YY_CURRENT_BUFFER_LVALUE->yy_buf_pos;
+        yyin = YY_CURRENT_BUFFER_LVALUE->yy_input_file;
+        yyg->yy_hold_char = *yyg->yy_c_buf_p;
+}
+
+/** Allocate and initialize an input buffer state.
+ * @param file A readable stream.
+ * @param size The character buffer size in bytes. When in doubt, use @c YY_BUF_SIZE.
+ * @param yyscanner The scanner object.
+ * @return the allocated buffer state.
+ */
+    YY_BUFFER_STATE sksl_create_buffer  (FILE * file, int  size , yyscan_t yyscanner)
+{
+        YY_BUFFER_STATE b;
+    
+        b = (YY_BUFFER_STATE) skslalloc(sizeof( struct yy_buffer_state ) ,yyscanner );
+        if ( ! b )
+                YY_FATAL_ERROR( "out of dynamic memory in sksl_create_buffer()" );
+
+        b->yy_buf_size = size;
+
+        /* yy_ch_buf has to be 2 characters longer than the size given because
+         * we need to put in 2 end-of-buffer characters.
+         */
+        b->yy_ch_buf = (char *) skslalloc(b->yy_buf_size + 2 ,yyscanner );
+        if ( ! b->yy_ch_buf )
+                YY_FATAL_ERROR( "out of dynamic memory in sksl_create_buffer()" );
+
+        b->yy_is_our_buffer = 1;
+
+        sksl_init_buffer(b,file ,yyscanner);
+
+        return b;
+}
+
+/** Destroy the buffer.
+ * @param b a buffer created with sksl_create_buffer()
+ * @param yyscanner The scanner object.
+ */
+    void sksl_delete_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+        if ( ! b )
+                return;
+
+        if ( b == YY_CURRENT_BUFFER ) /* Not sure if we should pop here. */
+                YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0;
+
+        if ( b->yy_is_our_buffer )
+                skslfree((void *) b->yy_ch_buf ,yyscanner );
+
+        skslfree((void *) b ,yyscanner );
+}
+
+/* Initializes or reinitializes a buffer.
+ * This function is sometimes called more than once on the same buffer,
+ * such as during a skslrestart() or at EOF.
+ */
+    static void sksl_init_buffer  (YY_BUFFER_STATE  b, FILE * file , yyscan_t yyscanner)
+
+{
+        int oerrno = errno;
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+        sksl_flush_buffer(b ,yyscanner);
+
+        b->yy_input_file = file;
+        b->yy_fill_buffer = 1;
+
+    /* If b is the current buffer, then sksl_init_buffer was _probably_
+     * called from skslrestart() or through yy_get_next_buffer.
+     * In that case, we don't want to reset the lineno or column.
+     */
+    if (b != YY_CURRENT_BUFFER){
+        b->yy_bs_lineno = 1;
+        b->yy_bs_column = 0;
+    }
+
+        b->yy_is_interactive = 0;
+    
+        errno = oerrno;
+}
+
+/** Discard all buffered characters. On the next scan, YY_INPUT will be called.
+ * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER.
+ * @param yyscanner The scanner object.
+ */
+    void sksl_flush_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+        if ( ! b )
+                return;
+
+        b->yy_n_chars = 0;
+
+        /* We always need two end-of-buffer characters.  The first causes
+         * a transition to the end-of-buffer state.  The second causes
+         * a jam in that state.
+         */
+        b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR;
+        b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR;
+
+        b->yy_buf_pos = &b->yy_ch_buf[0];
+
+        b->yy_at_bol = 1;
+        b->yy_buffer_status = YY_BUFFER_NEW;
+
+        if ( b == YY_CURRENT_BUFFER )
+                sksl_load_buffer_state(yyscanner );
+}
+
+/** Pushes the new state onto the stack. The new state becomes
+ *  the current state. This function will allocate the stack
+ *  if necessary.
+ *  @param new_buffer The new state.
+ *  @param yyscanner The scanner object.
+ */
+void skslpush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+        if (new_buffer == NULL)
+                return;
+
+        skslensure_buffer_stack(yyscanner);
+
+        /* This block is copied from sksl_switch_to_buffer. */
+        if ( YY_CURRENT_BUFFER )
+                {
+                /* Flush out information for old buffer. */
+                *yyg->yy_c_buf_p = yyg->yy_hold_char;
+                YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = yyg->yy_c_buf_p;
+                YY_CURRENT_BUFFER_LVALUE->yy_n_chars = yyg->yy_n_chars;
+                }
+
+        /* Only push if top exists. Otherwise, replace top. */
+        if (YY_CURRENT_BUFFER)
+                yyg->yy_buffer_stack_top++;
+        YY_CURRENT_BUFFER_LVALUE = new_buffer;
+
+        /* copied from sksl_switch_to_buffer. */
+        sksl_load_buffer_state(yyscanner );
+        yyg->yy_did_buffer_switch_on_eof = 1;
+}
+
+/** Removes and deletes the top of the stack, if present.
+ *  The next element becomes the new top.
+ *  @param yyscanner The scanner object.
+ */
+void skslpop_buffer_state (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+        if (!YY_CURRENT_BUFFER)
+                return;
+
+        sksl_delete_buffer(YY_CURRENT_BUFFER ,yyscanner);
+        YY_CURRENT_BUFFER_LVALUE = NULL;
+        if (yyg->yy_buffer_stack_top > 0)
+                --yyg->yy_buffer_stack_top;
+
+        if (YY_CURRENT_BUFFER) {
+                sksl_load_buffer_state(yyscanner );
+                yyg->yy_did_buffer_switch_on_eof = 1;
+        }
+}
+
+/* Allocates the stack if it does not exist.
+ *  Guarantees space for at least one push.
+ */
+static void skslensure_buffer_stack (yyscan_t yyscanner)
+{
+        yy_size_t num_to_alloc;
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+        if (!yyg->yy_buffer_stack) {
+
+                /* First allocation is just for 2 elements, since we don't know if this
+                 * scanner will even need a stack. We use 2 instead of 1 to avoid an
+                 * immediate realloc on the next call.
+         */
+                num_to_alloc = 1;
+                yyg->yy_buffer_stack = (struct yy_buffer_state**)skslalloc
+                                                                (num_to_alloc * sizeof(struct yy_buffer_state*)
+                                                                , yyscanner);
+                if ( ! yyg->yy_buffer_stack )
+                        YY_FATAL_ERROR( "out of dynamic memory in skslensure_buffer_stack()" );
+                                                                  
+                memset(yyg->yy_buffer_stack, 0, num_to_alloc * sizeof(struct yy_buffer_state*));
+                                
+                yyg->yy_buffer_stack_max = num_to_alloc;
+                yyg->yy_buffer_stack_top = 0;
+                return;
+        }
+
+        if (yyg->yy_buffer_stack_top >= (yyg->yy_buffer_stack_max) - 1){
+
+                /* Increase the buffer to prepare for a possible push. */
+                int grow_size = 8 /* arbitrary grow size */;
+
+                num_to_alloc = yyg->yy_buffer_stack_max + grow_size;
+                yyg->yy_buffer_stack = (struct yy_buffer_state**)skslrealloc
+                                                                (yyg->yy_buffer_stack,
+                                                                num_to_alloc * sizeof(struct yy_buffer_state*)
+                                                                , yyscanner);
+                if ( ! yyg->yy_buffer_stack )
+                        YY_FATAL_ERROR( "out of dynamic memory in skslensure_buffer_stack()" );
+
+                /* zero only the new slots.*/
+                memset(yyg->yy_buffer_stack + yyg->yy_buffer_stack_max, 0, grow_size * sizeof(struct yy_buffer_state*));
+                yyg->yy_buffer_stack_max = num_to_alloc;
+        }
+}
+
+/** Setup the input buffer state to scan directly from a user-specified character buffer.
+ * @param base the character buffer
+ * @param size the size in bytes of the character buffer
+ * @param yyscanner The scanner object.
+ * @return the newly allocated buffer state object. 
+ */
+YY_BUFFER_STATE sksl_scan_buffer  (char * base, yy_size_t  size , yyscan_t yyscanner)
+{
+        YY_BUFFER_STATE b;
+    
+        if ( size < 2 ||
+             base[size-2] != YY_END_OF_BUFFER_CHAR ||
+             base[size-1] != YY_END_OF_BUFFER_CHAR )
+                /* They forgot to leave room for the EOB's. */
+                return 0;
+
+        b = (YY_BUFFER_STATE) skslalloc(sizeof( struct yy_buffer_state ) ,yyscanner );
+        if ( ! b )
+                YY_FATAL_ERROR( "out of dynamic memory in sksl_scan_buffer()" );
+
+        b->yy_buf_size = size - 2;      /* "- 2" to take care of EOB's */
+        b->yy_buf_pos = b->yy_ch_buf = base;
+        b->yy_is_our_buffer = 0;
+        b->yy_input_file = 0;
+        b->yy_n_chars = b->yy_buf_size;
+        b->yy_is_interactive = 0;
+        b->yy_at_bol = 1;
+        b->yy_fill_buffer = 0;
+        b->yy_buffer_status = YY_BUFFER_NEW;
+
+        sksl_switch_to_buffer(b ,yyscanner );
+
+        return b;
+}
+
+/** Setup the input buffer state to scan a string. The next call to sksllex() will
+ * scan from a @e copy of @a str.
+ * @param yystr a NUL-terminated string to scan
+ * @param yyscanner The scanner object.
+ * @return the newly allocated buffer state object.
+ * @note If you want to scan bytes that may contain NUL values, then use
+ *       sksl_scan_bytes() instead.
+ */
+YY_BUFFER_STATE sksl_scan_string (yyconst char * yystr , yyscan_t yyscanner)
+{
+    
+        return sksl_scan_bytes(yystr,strlen(yystr) ,yyscanner);
+}
+
+/** Setup the input buffer state to scan the given bytes. The next call to sksllex() will
+ * scan from a @e copy of @a bytes.
+ * @param bytes the byte buffer to scan
+ * @param len the number of bytes in the buffer pointed to by @a bytes.
+ * @param yyscanner The scanner object.
+ * @return the newly allocated buffer state object.
+ */
+YY_BUFFER_STATE sksl_scan_bytes  (yyconst char * yybytes, yy_size_t  _yybytes_len , yyscan_t yyscanner)
+{
+        YY_BUFFER_STATE b;
+        char *buf;
+        yy_size_t n, i;
+    
+        /* Get memory for full buffer, including space for trailing EOB's. */
+        n = _yybytes_len + 2;
+        buf = (char *) skslalloc(n ,yyscanner );
+        if ( ! buf )
+                YY_FATAL_ERROR( "out of dynamic memory in sksl_scan_bytes()" );
+
+        for ( i = 0; i < _yybytes_len; ++i )
+                buf[i] = yybytes[i];
+
+        buf[_yybytes_len] = buf[_yybytes_len+1] = YY_END_OF_BUFFER_CHAR;
+
+        b = sksl_scan_buffer(buf,n ,yyscanner);
+        if ( ! b )
+                YY_FATAL_ERROR( "bad buffer in sksl_scan_bytes()" );
+
+        /* It's okay to grow etc. this buffer, and we should throw it
+         * away when we're done.
+         */
+        b->yy_is_our_buffer = 1;
+
+        return b;
+}
+
+#ifndef YY_EXIT_FAILURE
+#define YY_EXIT_FAILURE 2
+#endif
+
+static void yy_fatal_error (yyconst char* msg , yyscan_t yyscanner)
+{
+        (void) fprintf( stderr, "%s\n", msg );
+        exit( YY_EXIT_FAILURE );
+}
+
+/* Redefine yyless() so it works in section 3 code. */
+
+#undef yyless
+#define yyless(n) \
+        do \
+                { \
+                /* Undo effects of setting up yytext. */ \
+        int yyless_macro_arg = (n); \
+        YY_LESS_LINENO(yyless_macro_arg);\
+                yytext[yyleng] = yyg->yy_hold_char; \
+                yyg->yy_c_buf_p = yytext + yyless_macro_arg; \
+                yyg->yy_hold_char = *yyg->yy_c_buf_p; \
+                *yyg->yy_c_buf_p = '\0'; \
+                yyleng = yyless_macro_arg; \
+                } \
+        while ( 0 )
+
+/* Accessor  methods (get/set functions) to struct members. */
+
+/** Get the user-defined data for this scanner.
+ * @param yyscanner The scanner object.
+ */
+YY_EXTRA_TYPE skslget_extra  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    return yyextra;
+}
+
+/** Get the current line number.
+ * @param yyscanner The scanner object.
+ */
+int skslget_lineno  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    
+        if (! YY_CURRENT_BUFFER)
+            return 0;
+    
+    return yylineno;
+}
+
+/** Get the current column number.
+ * @param yyscanner The scanner object.
+ */
+int skslget_column  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    
+        if (! YY_CURRENT_BUFFER)
+            return 0;
+    
+    return yycolumn;
+}
+
+/** Get the input stream.
+ * @param yyscanner The scanner object.
+ */
+FILE *skslget_in  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    return yyin;
+}
+
+/** Get the output stream.
+ * @param yyscanner The scanner object.
+ */
+FILE *skslget_out  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    return yyout;
+}
+
+/** Get the length of the current token.
+ * @param yyscanner The scanner object.
+ */
+yy_size_t skslget_leng  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    return yyleng;
+}
+
+/** Get the current token.
+ * @param yyscanner The scanner object.
+ */
+
+char *skslget_text  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    return yytext;
+}
+
+/** Set the user-defined data. This data is never touched by the scanner.
+ * @param user_defined The data to be associated with this scanner.
+ * @param yyscanner The scanner object.
+ */
+void skslset_extra (YY_EXTRA_TYPE  user_defined , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    yyextra = user_defined ;
+}
+
+/** Set the current line number.
+ * @param line_number
+ * @param yyscanner The scanner object.
+ */
+void skslset_lineno (int  line_number , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+        /* lineno is only valid if an input buffer exists. */
+        if (! YY_CURRENT_BUFFER )
+           yy_fatal_error( "skslset_lineno called with no buffer" , yyscanner); 
+    
+    yylineno = line_number;
+}
+
+/** Set the current column.
+ * @param line_number
+ * @param yyscanner The scanner object.
+ */
+void skslset_column (int  column_no , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+        /* column is only valid if an input buffer exists. */
+        if (! YY_CURRENT_BUFFER )
+           yy_fatal_error( "skslset_column called with no buffer" , yyscanner); 
+    
+    yycolumn = column_no;
+}
+
+/** Set the input stream. This does not discard the current
+ * input buffer.
+ * @param in_str A readable stream.
+ * @param yyscanner The scanner object.
+ * @see sksl_switch_to_buffer
+ */
+void skslset_in (FILE *  in_str , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    yyin = in_str ;
+}
+
+void skslset_out (FILE *  out_str , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    yyout = out_str ;
+}
+
+int skslget_debug  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    return yy_flex_debug;
+}
+
+void skslset_debug (int  bdebug , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    yy_flex_debug = bdebug ;
+}
+
+/* Accessor methods for yylval and yylloc */
+
+/* User-visible API */
+
+/* sksllex_init is special because it creates the scanner itself, so it is
+ * the ONLY reentrant function that doesn't take the scanner as the last argument.
+ * That's why we explicitly handle the declaration, instead of using our macros.
+ */
+
+int sksllex_init(yyscan_t* ptr_yy_globals)
+
+{
+    if (ptr_yy_globals == NULL){
+        errno = EINVAL;
+        return 1;
+    }
+
+    *ptr_yy_globals = (yyscan_t) skslalloc ( sizeof( struct yyguts_t ), NULL );
+
+    if (*ptr_yy_globals == NULL){
+        errno = ENOMEM;
+        return 1;
+    }
+
+    /* By setting to 0xAA, we expose bugs in yy_init_globals. Leave at 0x00 for releases. */
+    memset(*ptr_yy_globals,0x00,sizeof(struct yyguts_t));
+
+    return yy_init_globals ( *ptr_yy_globals );
+}
+
+/* sksllex_init_extra has the same functionality as sksllex_init, but follows the
+ * convention of taking the scanner as the last argument. Note however, that
+ * this is a *pointer* to a scanner, as it will be allocated by this call (and
+ * is the reason, too, why this function also must handle its own declaration).
+ * The user defined value in the first argument will be available to skslalloc in
+ * the yyextra field.
+ */
+
+int sksllex_init_extra(YY_EXTRA_TYPE yy_user_defined,yyscan_t* ptr_yy_globals )
+
+{
+    struct yyguts_t dummy_yyguts;
+
+    skslset_extra (yy_user_defined, &dummy_yyguts);
+
+    if (ptr_yy_globals == NULL){
+        errno = EINVAL;
+        return 1;
+    }
+        
+    *ptr_yy_globals = (yyscan_t) skslalloc ( sizeof( struct yyguts_t ), &dummy_yyguts );
+        
+    if (*ptr_yy_globals == NULL){
+        errno = ENOMEM;
+        return 1;
+    }
+    
+    /* By setting to 0xAA, we expose bugs in
+    yy_init_globals. Leave at 0x00 for releases. */
+    memset(*ptr_yy_globals,0x00,sizeof(struct yyguts_t));
+    
+    skslset_extra (yy_user_defined, *ptr_yy_globals);
+    
+    return yy_init_globals ( *ptr_yy_globals );
+}
+
+static int yy_init_globals (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    /* Initialization is the same as for the non-reentrant scanner.
+     * This function is called from sksllex_destroy(), so don't allocate here.
+     */
+
+    yyg->yy_buffer_stack = 0;
+    yyg->yy_buffer_stack_top = 0;
+    yyg->yy_buffer_stack_max = 0;
+    yyg->yy_c_buf_p = (char *) 0;
+    yyg->yy_init = 0;
+    yyg->yy_start = 0;
+
+    yyg->yy_start_stack_ptr = 0;
+    yyg->yy_start_stack_depth = 0;
+    yyg->yy_start_stack =  NULL;
+
+/* Defined in main.c */
+#ifdef YY_STDINIT
+    yyin = stdin;
+    yyout = stdout;
+#else
+    yyin = (FILE *) 0;
+    yyout = (FILE *) 0;
+#endif
+
+    /* For future reference: Set errno on error, since we are called by
+     * sksllex_init()
+     */
+    return 0;
+}
+
+/* sksllex_destroy is for both reentrant and non-reentrant scanners. */
+int sksllex_destroy  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+    /* Pop the buffer stack, destroying each element. */
+        while(YY_CURRENT_BUFFER){
+                sksl_delete_buffer(YY_CURRENT_BUFFER ,yyscanner );
+                YY_CURRENT_BUFFER_LVALUE = NULL;
+                skslpop_buffer_state(yyscanner);
+        }
+
+        /* Destroy the stack itself. */
+        skslfree(yyg->yy_buffer_stack ,yyscanner);
+        yyg->yy_buffer_stack = NULL;
+
+    /* Destroy the start condition stack. */
+        skslfree(yyg->yy_start_stack ,yyscanner );
+        yyg->yy_start_stack = NULL;
+
+    /* Reset the globals. This is important in a non-reentrant scanner so the next time
+     * sksllex() is called, initialization will occur. */
+    yy_init_globals( yyscanner);
+
+    /* Destroy the main struct (reentrant only). */
+    skslfree ( yyscanner , yyscanner );
+    yyscanner = NULL;
+    return 0;
+}
+
+/*
+ * Internal utility routines.
+ */
+
+#ifndef yytext_ptr
+static void yy_flex_strncpy (char* s1, yyconst char * s2, int n , yyscan_t yyscanner)
+{
+        register int i;
+        for ( i = 0; i < n; ++i )
+                s1[i] = s2[i];
+}
+#endif
+
+#ifdef YY_NEED_STRLEN
+static int yy_flex_strlen (yyconst char * s , yyscan_t yyscanner)
+{
+        register int n;
+        for ( n = 0; s[n]; ++n )
+                ;
+
+        return n;
+}
+#endif
+
+void *skslalloc (yy_size_t  size , yyscan_t yyscanner)
+{
+        return (void *) malloc( size );
+}
+
+void *skslrealloc  (void * ptr, yy_size_t  size , yyscan_t yyscanner)
+{
+        /* The cast to (char *) in the following accommodates both
+         * implementations that use char* generic pointers, and those
+         * that use void* generic pointers.  It works with the latter
+         * because both ANSI C and C++ allow castless assignment from
+         * any pointer type to void*, and deal with argument conversions
+         * as though doing an assignment.
+         */
+        return (void *) realloc( (char *) ptr, size );
+}
+
+void skslfree (void * ptr , yyscan_t yyscanner)
+{
+        free( (char *) ptr );   /* see skslrealloc() for (char *) cast */
+}
+
+#define YYTABLES_NAME "yytables"
+
+#line 181 "sksl.flex"
+
+
+
+int skslwrap(yyscan_t scanner) {
+    return 1; // terminate
+}
+