diff options
| -rw-r--r-- | gn/sksl.gni | 1 | ||||
| -rw-r--r-- | src/sksl/SkSLParser.cpp | 90 | ||||
| -rw-r--r-- | src/sksl/SkSLParser.h | 24 | ||||
| -rw-r--r-- | src/sksl/SkSLToken.h | 20 | ||||
| -rw-r--r-- | src/sksl/disable_flex_warnings.h | 25 | ||||
| -rw-r--r-- | src/sksl/layout.flex | 61 | ||||
| -rw-r--r-- | src/sksl/lex.layout.c | 2189 | ||||
| -rw-r--r-- | src/sksl/lex.layout.cpp | 9 | ||||
| -rw-r--r-- | src/sksl/lex.layout.h | 12 | ||||
| -rw-r--r-- | src/sksl/sksl.flex | 17 |
10 files changed, 2361 insertions, 87 deletions
diff --git a/gn/sksl.gni b/gn/sksl.gni index b76baecefe..748466f6aa 100644 --- a/gn/sksl.gni +++ b/gn/sksl.gni @@ -14,6 +14,7 @@ skia_sksl_sources = [ "$_src/sksl/SkSLGLSLCodeGenerator.cpp", "$_src/sksl/SkSLSPIRVCodeGenerator.cpp", "$_src/sksl/SkSLUtil.cpp", + "$_src/sksl/lex.layout.cpp", "$_src/sksl/ir/SkSLSymbolTable.cpp", "$_src/sksl/ir/SkSLType.cpp", ] diff --git a/src/sksl/SkSLParser.cpp b/src/sksl/SkSLParser.cpp index 478d6fd673..e24685a51d 100644 --- a/src/sksl/SkSLParser.cpp +++ b/src/sksl/SkSLParser.cpp @@ -10,21 +10,9 @@ #include "SkSLToken.h" #define register -#ifdef __clang__ -#pragma clang diagnostic push -#pragma clang diagnostic ignored "-Wunneeded-internal-declaration" -#pragma clang diagnostic ignored "-Wnull-conversion" -#pragma clang diagnostic ignored "-Wsign-compare" -#endif -#ifdef __GNUC__ -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wsign-compare" -#endif -#ifdef _MSC_VER -#pragma warning(push) -#pragma warning(disable:4018) -#endif +#include "disable_flex_warnings.h" #include "lex.sksl.c" +#undef register #ifdef __clang__ #pragma clang diagnostic pop #endif @@ -34,8 +22,8 @@ #ifdef _MSC_VER #pragma warning(pop) #endif -#undef register +#include "lex.layout.h" #include "ast/SkSLASTBinaryExpression.h" #include "ast/SkSLASTBlock.h" #include "ast/SkSLASTBoolLiteral.h" @@ -106,6 +94,7 @@ Parser::Parser(SkString text, SymbolTable& types, ErrorReporter& errors) , fTypes(types) , fErrors(errors) { sksllex_init(&fScanner); + layoutlex_init(&fLayoutScanner); fBuffer = sksl_scan_string(text.c_str(), fScanner); skslset_lineno(1, fScanner); @@ -113,32 +102,12 @@ Parser::Parser(SkString text, SymbolTable& types, ErrorReporter& errors) // avoid unused warning yyunput(0, nullptr, fScanner); } - - fLayoutKeys[SkString("location")] = kLocation_LayoutKey; - fLayoutKeys[SkString("offset")] = kOffset_LayoutKey; - fLayoutKeys[SkString("binding")] = kBinding_LayoutKey; - fLayoutKeys[SkString("index")] = kIndex_LayoutKey; - fLayoutKeys[SkString("set")] = kSet_LayoutKey; - fLayoutKeys[SkString("builtin")] = kBuiltin_LayoutKey; - fLayoutKeys[SkString("input_attachment_index")] = kInputAttachmentIndex_LayoutKey; - fLayoutKeys[SkString("origin_upper_left")] = kOriginUpperLeft_LayoutKey; - fLayoutKeys[SkString("override_coverage")] = kOverrideCoverage_LayoutKey; - fLayoutKeys[SkString("blend_support_all_equations")] = kBlendSupportAllEquations_LayoutKey; - fLayoutKeys[SkString("push_constant")] = kPushConstant_LayoutKey; - fLayoutKeys[SkString("points")] = kPoints_LayoutKey; - fLayoutKeys[SkString("lines")] = kLines_LayoutKey; - fLayoutKeys[SkString("line_strip")] = kLineStrip_LayoutKey; - fLayoutKeys[SkString("lines_adjacency")] = kLinesAdjacency_LayoutKey; - fLayoutKeys[SkString("triangles")] = kTriangles_LayoutKey; - fLayoutKeys[SkString("triangle_strip")] = kTriangleStrip_LayoutKey; - fLayoutKeys[SkString("triangles_adjacency")] = kTrianglesAdjacency_LayoutKey; - fLayoutKeys[SkString("max_vertices")] = kMaxVertices_LayoutKey; - fLayoutKeys[SkString("invocations")] = kInvocations_LayoutKey; } Parser::~Parser() { sksl_delete_buffer(fBuffer, fScanner); sksllex_destroy(fScanner); + layoutlex_destroy(fLayoutScanner); } /* (precision | directive | declaration)* END_OF_FILE */ @@ -593,67 +562,70 @@ Layout Parser::layout() { } for (;;) { Token t = this->nextToken(); - auto found = fLayoutKeys.find(t.fText); - if (found != fLayoutKeys.end()) { - switch (found->second) { - case kLocation_LayoutKey: + YY_BUFFER_STATE buffer; + buffer = layout_scan_string(t.fText.c_str(), fLayoutScanner); + int token = layoutlex(fLayoutScanner); + layout_delete_buffer(buffer, fLayoutScanner); + if (token != Token::INVALID_TOKEN) { + switch (token) { + case Token::LOCATION: location = this->layoutInt(); break; - case kOffset_LayoutKey: + case Token::OFFSET: offset = this->layoutInt(); break; - case kBinding_LayoutKey: + case Token::BINDING: binding = this->layoutInt(); break; - case kIndex_LayoutKey: + case Token::INDEX: index = this->layoutInt(); break; - case kSet_LayoutKey: + case Token::SET: set = this->layoutInt(); break; - case kBuiltin_LayoutKey: + case Token::BUILTIN: builtin = this->layoutInt(); break; - case kInputAttachmentIndex_LayoutKey: + case Token::INPUT_ATTACHMENT_INDEX: inputAttachmentIndex = this->layoutInt(); break; - case kOriginUpperLeft_LayoutKey: + case Token::ORIGIN_UPPER_LEFT: originUpperLeft = true; break; - case kOverrideCoverage_LayoutKey: + case Token::OVERRIDE_COVERAGE: overrideCoverage = true; break; - case kBlendSupportAllEquations_LayoutKey: + case Token::BLEND_SUPPORT_ALL_EQUATIONS: blendSupportAllEquations = true; break; - case kPushConstant_LayoutKey: + case Token::PUSH_CONSTANT: pushConstant = true; break; - case kPoints_LayoutKey: + case Token::POINTS: primitive = Layout::kPoints_Primitive; break; - case kLines_LayoutKey: + case Token::LINES: primitive = Layout::kLines_Primitive; break; - case kLineStrip_LayoutKey: + case Token::LINE_STRIP: primitive = Layout::kLineStrip_Primitive; break; - case kLinesAdjacency_LayoutKey: + case Token::LINES_ADJACENCY: primitive = Layout::kLinesAdjacency_Primitive; break; - case kTriangles_LayoutKey: + case Token::TRIANGLES: primitive = Layout::kTriangles_Primitive; break; - case kTriangleStrip_LayoutKey: + case Token::TRIANGLE_STRIP: primitive = Layout::kTriangleStrip_Primitive; break; - case kTrianglesAdjacency_LayoutKey: + case Token::TRIANGLES_ADJACENCY: primitive = Layout::kTrianglesAdjacency_Primitive; break; - case kMaxVertices_LayoutKey: + case Token::MAX_VERTICES: maxVertices = this->layoutInt(); break; - case kInvocations_LayoutKey: + case Token::INVOCATIONS: invocations = this->layoutInt(); break; } diff --git a/src/sksl/SkSLParser.h b/src/sksl/SkSLParser.h index 63894e0227..9be017ce62 100644 --- a/src/sksl/SkSLParser.h +++ b/src/sksl/SkSLParser.h @@ -206,6 +206,7 @@ private: bool identifier(SkString* dest); void* fScanner; + void* fLayoutScanner; YY_BUFFER_STATE fBuffer; // current parse depth, used to enforce a recursion limit to try to keep us from overflowing the // stack on pathological inputs @@ -213,29 +214,6 @@ private: Token fPushback; SymbolTable& fTypes; ErrorReporter& fErrors; - enum LayoutKey { - kLocation_LayoutKey, - kOffset_LayoutKey, - kBinding_LayoutKey, - kIndex_LayoutKey, - kSet_LayoutKey, - kBuiltin_LayoutKey, - kInputAttachmentIndex_LayoutKey, - kOriginUpperLeft_LayoutKey, - kOverrideCoverage_LayoutKey, - kBlendSupportAllEquations_LayoutKey, - kPushConstant_LayoutKey, - kPoints_LayoutKey, - kLines_LayoutKey, - kLineStrip_LayoutKey, - kLinesAdjacency_LayoutKey, - kTriangles_LayoutKey, - kTriangleStrip_LayoutKey, - kTrianglesAdjacency_LayoutKey, - kMaxVertices_LayoutKey, - kInvocations_LayoutKey - }; - std::unordered_map<SkString, LayoutKey> fLayoutKeys; friend class AutoDepth; }; diff --git a/src/sksl/SkSLToken.h b/src/sksl/SkSLToken.h index 70b4ed298e..6bacb9015f 100644 --- a/src/sksl/SkSLToken.h +++ b/src/sksl/SkSLToken.h @@ -108,6 +108,26 @@ struct Token { LAYOUT, DIRECTIVE, PRECISION, + LOCATION, + OFFSET, + BINDING, + INDEX, + SET, + BUILTIN, + INPUT_ATTACHMENT_INDEX, + ORIGIN_UPPER_LEFT, + OVERRIDE_COVERAGE, + BLEND_SUPPORT_ALL_EQUATIONS, + PUSH_CONSTANT, + POINTS, + LINES, + LINE_STRIP, + LINES_ADJACENCY, + TRIANGLES, + TRIANGLE_STRIP, + TRIANGLES_ADJACENCY, + MAX_VERTICES, + INVOCATIONS, INVALID_TOKEN }; diff --git a/src/sksl/disable_flex_warnings.h b/src/sksl/disable_flex_warnings.h new file mode 100644 index 0000000000..2b6e8528cb --- /dev/null +++ b/src/sksl/disable_flex_warnings.h @@ -0,0 +1,25 @@ +/* + * Copyright 2017 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +// useless include to avoid "#if before #include" complaint from Skia presubmit +#include "SkSLUtil.h" +#ifdef __clang__ +#pragma clang diagnostic push +#pragma clang diagnostic ignored "-Wunneeded-internal-declaration" +#pragma clang diagnostic ignored "-Wnull-conversion" +#pragma clang diagnostic ignored "-Wsign-compare" +#pragma clang diagnostic ignored "-Wunused-function" +#endif +#ifdef __GNUC__ +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wsign-compare" +#pragma GCC diagnostic ignored "-Wunused-function" +#endif +#ifdef _MSC_VER +#pragma warning(push) +#pragma warning(disable:4018) +#endif diff --git a/src/sksl/layout.flex b/src/sksl/layout.flex new file mode 100644 index 0000000000..412bd4707b --- /dev/null +++ b/src/sksl/layout.flex @@ -0,0 +1,61 @@ +/* + * Copyright 2017 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +/* + + 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.layout.c file must be manually regenerated if you make any changes to this file. Just + run: + + flex layout.flex + + You will have to manually add a copyright notice to the top of lex.layout.c. + +*/ + +%option prefix="layout" +%option reentrant +%option yylineno +%option never-interactive +%option nounistd + +%{ +#include "SkSLToken.h" +%} + +%% + +"location" { return SkSL::Token::LOCATION; } +"offset" { return SkSL::Token::OFFSET; } +"binding" { return SkSL::Token::BINDING; } +"index" { return SkSL::Token::INDEX; } +"set" { return SkSL::Token::SET; } +"builtin" { return SkSL::Token::BUILTIN; } +"input_attachment_index" { return SkSL::Token::INPUT_ATTACHMENT_INDEX; } +"origin_upper_left" { return SkSL::Token::ORIGIN_UPPER_LEFT; } +"override_coverage" { return SkSL::Token::OVERRIDE_COVERAGE; } +"blend_support_all_equations" { return SkSL::Token::BLEND_SUPPORT_ALL_EQUATIONS; } +"push_constant" { return SkSL::Token::PUSH_CONSTANT; } +"points" { return SkSL::Token::POINTS; } +"lines" { return SkSL::Token::LINES; } +"line_strip" { return SkSL::Token::LINE_STRIP; } +"lines_adjacency" { return SkSL::Token::LINES_ADJACENCY; } +"triangles" { return SkSL::Token::TRIANGLES; } +"triangle_strip" { return SkSL::Token::TRIANGLE_STRIP; } +"triangles_adjacency" { return SkSL::Token::TRIANGLES_ADJACENCY; } +"max_vertices" { return SkSL::Token::MAX_VERTICES; } +"invocations" { return SkSL::Token::INVOCATIONS; } + +. { return SkSL::Token::INVALID_TOKEN; } + +%% + +int layoutwrap(yyscan_t scanner) { + return 1; // terminate +} diff --git a/src/sksl/lex.layout.c b/src/sksl/lex.layout.c new file mode 100644 index 0000000000..ef5b312ff7 --- /dev/null +++ b/src/sksl/lex.layout.c @@ -0,0 +1,2189 @@ +/* + * Copyright 2017 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.layout.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 layoutrestart(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 layoutlex. + * 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 layoutrestart()), 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 layoutrestart (FILE *input_file ,yyscan_t yyscanner ); +void layout_switch_to_buffer (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner ); +YY_BUFFER_STATE layout_create_buffer (FILE *file,int size ,yyscan_t yyscanner ); +void layout_delete_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner ); +void layout_flush_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner ); +void layoutpush_buffer_state (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner ); +void layoutpop_buffer_state (yyscan_t yyscanner ); + +static void layoutensure_buffer_stack (yyscan_t yyscanner ); +static void layout_load_buffer_state (yyscan_t yyscanner ); +static void layout_init_buffer (YY_BUFFER_STATE b,FILE *file ,yyscan_t yyscanner ); + +#define YY_FLUSH_BUFFER layout_flush_buffer(YY_CURRENT_BUFFER ,yyscanner) + +YY_BUFFER_STATE layout_scan_buffer (char *base,yy_size_t size ,yyscan_t yyscanner ); +YY_BUFFER_STATE layout_scan_string (yyconst char *yy_str ,yyscan_t yyscanner ); +YY_BUFFER_STATE layout_scan_bytes (yyconst char *bytes,yy_size_t len ,yyscan_t yyscanner ); + +void *layoutalloc (yy_size_t ,yyscan_t yyscanner ); +void *layoutrealloc (void *,yy_size_t ,yyscan_t yyscanner ); +void layoutfree (void * ,yyscan_t yyscanner ); + +#define yy_new_buffer layout_create_buffer + +#define yy_set_interactive(is_interactive) \ + { \ + if ( ! YY_CURRENT_BUFFER ){ \ + layoutensure_buffer_stack (yyscanner); \ + YY_CURRENT_BUFFER_LVALUE = \ + layout_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 ){\ + layoutensure_buffer_stack (yyscanner); \ + YY_CURRENT_BUFFER_LVALUE = \ + layout_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 22 +#define YY_END_OF_BUFFER 23 +/* 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[204] = + { 0, + 0, 0, 23, 21, 22, 21, 21, 21, 21, 21, + 21, 21, 21, 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, 5, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 4, 0, 0, 0, 13, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 2, 0, 0, 12, 0, 0, 3, + 0, 6, 0, 0, 0, 0, 0, 0, 0, 0, + + 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 16, 0, 0, 0, 14, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 20, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 19, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 11, + 0, 0, 0, 0, 0, 0, 0, 17, 0, 0, + 0, 15, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 8, 9, 0, 0, 0, 0, 0, 0, + 18, 0, 0, 0, 0, 0, 7, 0, 0, 0, + + 0, 10, 0 + } ; + +static yyconst flex_int32_t yy_ec[256] = + { 0, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, + 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, 3, 1, 4, 5, 6, 7, + + 8, 9, 10, 11, 12, 13, 1, 14, 15, 16, + 17, 18, 19, 20, 21, 22, 23, 24, 1, 25, + 26, 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, 1, 1, 1, 1 + } ; + +static yyconst flex_int32_t yy_meta[27] = + { 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 + } ; + +static yyconst flex_int16_t yy_base[205] = + { 0, + 0, 21, 218, 219, 219, 17, 201, 7, 212, 21, + 11, 207, 194, 197, 204, 199, 30, 194, 203, 183, + 198, 194, 197, 192, 182, 180, 189, 193, 183, 184, + 189, 173, 178, 186, 189, 189, 170, 180, 169, 172, + 176, 219, 182, 173, 177, 161, 157, 159, 174, 4, + 157, 154, 169, 164, 155, 152, 170, 156, 155, 167, + 157, 219, 165, 163, 145, 162, 152, 155, 140, 145, + 148, 138, 152, 147, 146, 134, 138, 149, 130, 129, + 146, 132, 128, 219, 144, 139, 219, 128, 130, 219, + 120, 219, 120, 129, 120, 132, 122, 115, 113, 127, + + 118, 125, 114, 109, 113, 117, 115, 219, 115, 108, + 122, 103, 6, 105, 118, 105, 102, 115, 112, 99, + 110, 93, 93, 110, 95, 105, 89, 219, 103, 100, + 99, 89, 101, 82, 99, 82, 90, 219, 92, 78, + 78, 73, 80, 75, 87, 71, 77, 75, 219, 87, + 81, 66, 75, 73, 82, 76, 77, 68, 61, 219, + 62, 75, 74, 61, 50, 67, 70, 219, 67, 58, + 49, 219, 61, 59, 60, 53, 63, 43, 56, 47, + 59, 49, 219, 219, 54, 51, 42, 31, 37, 48, + 219, 30, 44, 47, 25, 27, 219, 35, 29, 28, + + 11, 219, 219, 0 + } ; + +static yyconst flex_int16_t yy_def[205] = + { 0, + 204, 204, 203, 203, 203, 203, 203, 203, 203, 203, + 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, + 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, + 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, + 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, + 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, + 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, + 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, + 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, + 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, + + 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, + 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, + 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, + 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, + 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, + 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, + 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, + 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, + 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, + 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, + + 203, 203, 0, 203 + } ; + +static yyconst flex_int16_t yy_nxt[246] = + { 0, + 4, 5, 203, 203, 6, 203, 65, 203, 123, 203, + 203, 7, 203, 8, 9, 203, 10, 11, 18, 203, + 12, 13, 5, 19, 66, 6, 124, 24, 14, 21, + 15, 202, 7, 25, 8, 9, 31, 10, 11, 16, + 22, 12, 13, 201, 23, 200, 199, 32, 198, 197, + 196, 195, 194, 33, 193, 192, 191, 190, 189, 188, + 187, 186, 185, 184, 183, 182, 181, 180, 179, 178, + 177, 176, 175, 174, 173, 172, 171, 170, 169, 168, + 167, 166, 165, 164, 163, 162, 161, 160, 159, 158, + 157, 156, 155, 154, 153, 152, 151, 150, 149, 148, + + 147, 146, 145, 144, 143, 142, 141, 140, 139, 138, + 137, 136, 135, 134, 133, 132, 131, 130, 129, 128, + 127, 126, 125, 122, 121, 120, 119, 118, 117, 116, + 115, 114, 113, 112, 111, 110, 109, 108, 107, 106, + 105, 104, 103, 102, 101, 100, 99, 98, 97, 96, + 95, 94, 93, 92, 91, 90, 89, 88, 87, 86, + 85, 84, 83, 82, 81, 80, 79, 78, 77, 76, + 75, 74, 73, 72, 71, 70, 69, 68, 67, 64, + 63, 62, 61, 60, 59, 58, 57, 56, 55, 54, + 53, 52, 51, 50, 49, 48, 47, 46, 45, 44, + + 43, 42, 41, 40, 39, 38, 37, 36, 35, 34, + 30, 29, 28, 27, 26, 20, 17, 203, 3, 203, + 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, + 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, + 203, 203, 203, 203, 203 + } ; + +static yyconst flex_int16_t yy_chk[246] = + { 0, + 204, 1, 0, 0, 1, 0, 50, 0, 113, 0, + 0, 1, 0, 1, 1, 0, 1, 1, 8, 0, + 1, 1, 2, 8, 50, 2, 113, 11, 6, 10, + 6, 201, 2, 11, 2, 2, 17, 2, 2, 6, + 10, 2, 2, 200, 10, 199, 198, 17, 196, 195, + 194, 193, 192, 17, 190, 189, 188, 187, 186, 185, + 182, 181, 180, 179, 178, 177, 176, 175, 174, 173, + 171, 170, 169, 167, 166, 165, 164, 163, 162, 161, + 159, 158, 157, 156, 155, 154, 153, 152, 151, 150, + 148, 147, 146, 145, 144, 143, 142, 141, 140, 139, + + 137, 136, 135, 134, 133, 132, 131, 130, 129, 127, + 126, 125, 124, 123, 122, 121, 120, 119, 118, 117, + 116, 115, 114, 112, 111, 110, 109, 107, 106, 105, + 104, 103, 102, 101, 100, 99, 98, 97, 96, 95, + 94, 93, 91, 89, 88, 86, 85, 83, 82, 81, + 80, 79, 78, 77, 76, 75, 74, 73, 72, 71, + 70, 69, 68, 67, 66, 65, 64, 63, 61, 60, + 59, 58, 57, 56, 55, 54, 53, 52, 51, 49, + 48, 47, 46, 45, 44, 43, 41, 40, 39, 38, + 37, 36, 35, 34, 33, 32, 31, 30, 29, 28, + + 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, + 16, 15, 14, 13, 12, 9, 7, 3, 203, 203, + 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, + 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, + 203, 203, 203, 203, 203 + } ; + +/* Table of booleans, true if rule could match eol. */ +static yyconst flex_int32_t yy_rule_can_match_eol[23] = + { 0, +0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 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 "layout.flex" +/* + * Copyright 2017 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ +/* + + 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.layout.c file must be manually regenerated if you make any changes to this file. Just + run: + + flex layout.flex + + You will have to manually add a copyright notice to the top of lex.layout.c. + +*/ +#define YY_NO_UNISTD_H 1 +#line 29 "layout.flex" +#include "SkSLToken.h" +#line 590 "lex.layout.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 layoutlex_init (yyscan_t* scanner); + +int layoutlex_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 layoutlex_destroy (yyscan_t yyscanner ); + +int layoutget_debug (yyscan_t yyscanner ); + +void layoutset_debug (int debug_flag ,yyscan_t yyscanner ); + +YY_EXTRA_TYPE layoutget_extra (yyscan_t yyscanner ); + +void layoutset_extra (YY_EXTRA_TYPE user_defined ,yyscan_t yyscanner ); + +FILE *layoutget_in (yyscan_t yyscanner ); + +void layoutset_in (FILE * in_str ,yyscan_t yyscanner ); + +FILE *layoutget_out (yyscan_t yyscanner ); + +void layoutset_out (FILE * out_str ,yyscan_t yyscanner ); + +yy_size_t layoutget_leng (yyscan_t yyscanner ); + +char *layoutget_text (yyscan_t yyscanner ); + +int layoutget_lineno (yyscan_t yyscanner ); + +void layoutset_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 layoutwrap (yyscan_t yyscanner ); +#else +extern int layoutwrap (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 layoutlex (yyscan_t yyscanner); + +#define YY_DECL int layoutlex (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 32 "layout.flex" + + +#line 814 "lex.layout.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 ) { + layoutensure_buffer_stack (yyscanner); + YY_CURRENT_BUFFER_LVALUE = + layout_create_buffer(yyin,YY_BUF_SIZE ,yyscanner); + } + + layout_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 >= 204 ) + 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 != 203 ); + 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 34 "layout.flex" +{ return SkSL::Token::LOCATION; } + YY_BREAK +case 2: +YY_RULE_SETUP +#line 35 "layout.flex" +{ return SkSL::Token::OFFSET; } + YY_BREAK +case 3: +YY_RULE_SETUP +#line 36 "layout.flex" +{ return SkSL::Token::BINDING; } + YY_BREAK +case 4: +YY_RULE_SETUP +#line 37 "layout.flex" +{ return SkSL::Token::INDEX; } + YY_BREAK +case 5: +YY_RULE_SETUP +#line 38 "layout.flex" +{ return SkSL::Token::SET; } + YY_BREAK +case 6: +YY_RULE_SETUP +#line 39 "layout.flex" +{ return SkSL::Token::BUILTIN; } + YY_BREAK +case 7: +YY_RULE_SETUP +#line 40 "layout.flex" +{ return SkSL::Token::INPUT_ATTACHMENT_INDEX; } + YY_BREAK +case 8: +YY_RULE_SETUP +#line 41 "layout.flex" +{ return SkSL::Token::ORIGIN_UPPER_LEFT; } + YY_BREAK +case 9: +YY_RULE_SETUP +#line 42 "layout.flex" +{ return SkSL::Token::OVERRIDE_COVERAGE; } + YY_BREAK +case 10: +YY_RULE_SETUP +#line 43 "layout.flex" +{ return SkSL::Token::BLEND_SUPPORT_ALL_EQUATIONS; } + YY_BREAK +case 11: +YY_RULE_SETUP +#line 44 "layout.flex" +{ return SkSL::Token::PUSH_CONSTANT; } + YY_BREAK +case 12: +YY_RULE_SETUP +#line 45 "layout.flex" +{ return SkSL::Token::POINTS; } + YY_BREAK +case 13: +YY_RULE_SETUP +#line 46 "layout.flex" +{ return SkSL::Token::LINES; } + YY_BREAK +case 14: +YY_RULE_SETUP +#line 47 "layout.flex" +{ return SkSL::Token::LINE_STRIP; } + YY_BREAK +case 15: +YY_RULE_SETUP +#line 48 "layout.flex" +{ return SkSL::Token::LINES_ADJACENCY; } + YY_BREAK +case 16: +YY_RULE_SETUP +#line 49 "layout.flex" +{ return SkSL::Token::TRIANGLES; } + YY_BREAK +case 17: +YY_RULE_SETUP +#line 50 "layout.flex" +{ return SkSL::Token::TRIANGLE_STRIP; } + YY_BREAK +case 18: +YY_RULE_SETUP +#line 51 "layout.flex" +{ return SkSL::Token::TRIANGLES_ADJACENCY; } + YY_BREAK +case 19: +YY_RULE_SETUP +#line 52 "layout.flex" +{ return SkSL::Token::MAX_VERTICES; } + YY_BREAK +case 20: +YY_RULE_SETUP +#line 53 "layout.flex" +{ return SkSL::Token::INVOCATIONS; } + YY_BREAK +case 21: +YY_RULE_SETUP +#line 55 "layout.flex" +{ return SkSL::Token::INVALID_TOKEN; } + YY_BREAK +case 22: +YY_RULE_SETUP +#line 57 "layout.flex" +ECHO; + YY_BREAK +#line 1015 "lex.layout.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 + * layoutlex(). 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 ( layoutwrap(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 layoutlex */ + +/* 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. */ + layoutrealloc((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; + layoutrestart(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 *) layoutrealloc((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 >= 204 ) + 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 >= 204 ) + 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 == 203); + + 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. */ + layoutrestart(yyin ,yyscanner); + + /*FALLTHROUGH*/ + + case EOB_ACT_END_OF_FILE: + { + if ( layoutwrap(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 layoutrestart (FILE * input_file , yyscan_t yyscanner) +{ + struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; + + if ( ! YY_CURRENT_BUFFER ){ + layoutensure_buffer_stack (yyscanner); + YY_CURRENT_BUFFER_LVALUE = + layout_create_buffer(yyin,YY_BUF_SIZE ,yyscanner); + } + + layout_init_buffer(YY_CURRENT_BUFFER,input_file ,yyscanner); + layout_load_buffer_state(yyscanner ); +} + +/** Switch to a different input buffer. + * @param new_buffer The new input buffer. + * @param yyscanner The scanner object. + */ + void layout_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 + * layoutpop_buffer_state(); + * layoutpush_buffer_state(new_buffer); + */ + layoutensure_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; + layout_load_buffer_state(yyscanner ); + + /* We don't actually know whether we did this switch during + * EOF (layoutwrap()) processing, but the only time this flag + * is looked at is after layoutwrap() is called, so it's safe + * to go ahead and always set it. + */ + yyg->yy_did_buffer_switch_on_eof = 1; +} + +static void layout_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 layout_create_buffer (FILE * file, int size , yyscan_t yyscanner) +{ + YY_BUFFER_STATE b; + + b = (YY_BUFFER_STATE) layoutalloc(sizeof( struct yy_buffer_state ) ,yyscanner ); + if ( ! b ) + YY_FATAL_ERROR( "out of dynamic memory in layout_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 *) layoutalloc(b->yy_buf_size + 2 ,yyscanner ); + if ( ! b->yy_ch_buf ) + YY_FATAL_ERROR( "out of dynamic memory in layout_create_buffer()" ); + + b->yy_is_our_buffer = 1; + + layout_init_buffer(b,file ,yyscanner); + + return b; +} + +/** Destroy the buffer. + * @param b a buffer created with layout_create_buffer() + * @param yyscanner The scanner object. + */ + void layout_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 ) + layoutfree((void *) b->yy_ch_buf ,yyscanner ); + + layoutfree((void *) b ,yyscanner ); +} + +/* Initializes or reinitializes a buffer. + * This function is sometimes called more than once on the same buffer, + * such as during a layoutrestart() or at EOF. + */ + static void layout_init_buffer (YY_BUFFER_STATE b, FILE * file , yyscan_t yyscanner) + +{ + int oerrno = errno; + struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; + + layout_flush_buffer(b ,yyscanner); + + b->yy_input_file = file; + b->yy_fill_buffer = 1; + + /* If b is the current buffer, then layout_init_buffer was _probably_ + * called from layoutrestart() 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 layout_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 ) + layout_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 layoutpush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t yyscanner) +{ + struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; + if (new_buffer == NULL) + return; + + layoutensure_buffer_stack(yyscanner); + + /* This block is copied from layout_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 layout_switch_to_buffer. */ + layout_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 layoutpop_buffer_state (yyscan_t yyscanner) +{ + struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; + if (!YY_CURRENT_BUFFER) + return; + + layout_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) { + layout_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 layoutensure_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**)layoutalloc + (num_to_alloc * sizeof(struct yy_buffer_state*) + , yyscanner); + if ( ! yyg->yy_buffer_stack ) + YY_FATAL_ERROR( "out of dynamic memory in layoutensure_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**)layoutrealloc + (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 layoutensure_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 layout_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) layoutalloc(sizeof( struct yy_buffer_state ) ,yyscanner ); + if ( ! b ) + YY_FATAL_ERROR( "out of dynamic memory in layout_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; + + layout_switch_to_buffer(b ,yyscanner ); + + return b; +} + +/** Setup the input buffer state to scan a string. The next call to layoutlex() 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 + * layout_scan_bytes() instead. + */ +YY_BUFFER_STATE layout_scan_string (yyconst char * yystr , yyscan_t yyscanner) +{ + + return layout_scan_bytes(yystr,strlen(yystr) ,yyscanner); +} + +/** Setup the input buffer state to scan the given bytes. The next call to layoutlex() 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 layout_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 *) layoutalloc(n ,yyscanner ); + if ( ! buf ) + YY_FATAL_ERROR( "out of dynamic memory in layout_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 = layout_scan_buffer(buf,n ,yyscanner); + if ( ! b ) + YY_FATAL_ERROR( "bad buffer in layout_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 layoutget_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 layoutget_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 layoutget_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 *layoutget_in (yyscan_t yyscanner) +{ + struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; + return yyin; +} + +/** Get the output stream. + * @param yyscanner The scanner object. + */ +FILE *layoutget_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 layoutget_leng (yyscan_t yyscanner) +{ + struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; + return yyleng; +} + +/** Get the current token. + * @param yyscanner The scanner object. + */ + +char *layoutget_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 layoutset_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 layoutset_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( "layoutset_lineno called with no buffer" , yyscanner); + + yylineno = line_number; +} + +/** Set the current column. + * @param line_number + * @param yyscanner The scanner object. + */ +void layoutset_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( "layoutset_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 layout_switch_to_buffer + */ +void layoutset_in (FILE * in_str , yyscan_t yyscanner) +{ + struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; + yyin = in_str ; +} + +void layoutset_out (FILE * out_str , yyscan_t yyscanner) +{ + struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; + yyout = out_str ; +} + +int layoutget_debug (yyscan_t yyscanner) +{ + struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; + return yy_flex_debug; +} + +void layoutset_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 */ + +/* layoutlex_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 layoutlex_init(yyscan_t* ptr_yy_globals) + +{ + if (ptr_yy_globals == NULL){ + errno = EINVAL; + return 1; + } + + *ptr_yy_globals = (yyscan_t) layoutalloc ( 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 ); +} + +/* layoutlex_init_extra has the same functionality as layoutlex_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 layoutalloc in + * the yyextra field. + */ + +int layoutlex_init_extra(YY_EXTRA_TYPE yy_user_defined,yyscan_t* ptr_yy_globals ) + +{ + struct yyguts_t dummy_yyguts; + + layoutset_extra (yy_user_defined, &dummy_yyguts); + + if (ptr_yy_globals == NULL){ + errno = EINVAL; + return 1; + } + + *ptr_yy_globals = (yyscan_t) layoutalloc ( 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)); + + layoutset_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 layoutlex_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 + * layoutlex_init() + */ + return 0; +} + +/* layoutlex_destroy is for both reentrant and non-reentrant scanners. */ +int layoutlex_destroy (yyscan_t yyscanner) +{ + struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; + + /* Pop the buffer stack, destroying each element. */ + while(YY_CURRENT_BUFFER){ + layout_delete_buffer(YY_CURRENT_BUFFER ,yyscanner ); + YY_CURRENT_BUFFER_LVALUE = NULL; + layoutpop_buffer_state(yyscanner); + } + + /* Destroy the stack itself. */ + layoutfree(yyg->yy_buffer_stack ,yyscanner); + yyg->yy_buffer_stack = NULL; + + /* Destroy the start condition stack. */ + layoutfree(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 + * layoutlex() is called, initialization will occur. */ + yy_init_globals( yyscanner); + + /* Destroy the main struct (reentrant only). */ + layoutfree ( 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 *layoutalloc (yy_size_t size , yyscan_t yyscanner) +{ + return (void *) malloc( size ); +} + +void *layoutrealloc (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 layoutfree (void * ptr , yyscan_t yyscanner) +{ + free( (char *) ptr ); /* see layoutrealloc() for (char *) cast */ +} + +#define YYTABLES_NAME "yytables" + +#line 57 "layout.flex" + + + +int layoutwrap(yyscan_t scanner) { + return 1; // terminate +} + diff --git a/src/sksl/lex.layout.cpp b/src/sksl/lex.layout.cpp new file mode 100644 index 0000000000..1d03e29cf8 --- /dev/null +++ b/src/sksl/lex.layout.cpp @@ -0,0 +1,9 @@ +/* + * Copyright 2017 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include "disable_flex_warnings.h" +#include "lex.layout.c" diff --git a/src/sksl/lex.layout.h b/src/sksl/lex.layout.h new file mode 100644 index 0000000000..345b336253 --- /dev/null +++ b/src/sksl/lex.layout.h @@ -0,0 +1,12 @@ +/* + * Copyright 2017 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +int layoutlex_init(yyscan_t* ptr_yy_globals); +int layoutlex_destroy(void* scanner); +YY_BUFFER_STATE layout_scan_string(const char* s, void* scanner); +int layoutlex(void* yyscanner); +void layout_delete_buffer(YY_BUFFER_STATE b, void* yyscanner); diff --git a/src/sksl/sksl.flex b/src/sksl/sksl.flex index adecbcf62f..bbb106c228 100644 --- a/src/sksl/sksl.flex +++ b/src/sksl/sksl.flex @@ -1,14 +1,21 @@ /* + * Copyright 2017 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ - This file is IGNORED during the build process! +/* + + 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: + 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 + flex sksl.flex You will have to manually add a copyright notice to the top of lex.sksl.c. - + */ %option prefix="sksl" |