%{ /* * Copyright © 2008, 2009 Intel Corporation * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. */ #include #include #include "strtod.h" #include "ast.h" #include "glsl_parser_extras.h" #include "glsl_parser.h" static int classify_identifier(struct _mesa_glsl_parse_state *, const char *); #ifdef _MSC_VER #define YY_NO_UNISTD_H #endif #define YY_USER_ACTION \ do { \ yylloc->source = 0; \ yylloc->first_column = yycolumn + 1; \ yylloc->first_line = yylloc->last_line = yylineno + 1; \ yycolumn += yyleng; \ yylloc->last_column = yycolumn + 1; \ } while(0); #define YY_USER_INIT yylineno = 0; yycolumn = 0; /* A macro for handling reserved words and keywords across language versions. * * Certain words start out as identifiers, become reserved words in * later language revisions, and finally become language keywords. * This may happen at different times in desktop GLSL and GLSL ES. * * For example, consider the following lexer rule: * samplerBuffer KEYWORD(130, 0, 140, 0, SAMPLERBUFFER) * * This means that "samplerBuffer" will be treated as: * - a keyword (SAMPLERBUFFER token) ...in GLSL >= 1.40 * - a reserved word - error ...in GLSL >= 1.30 * - an identifier ...in GLSL < 1.30 or GLSL ES */ #define KEYWORD(reserved_glsl, reserved_glsl_es, \ allowed_glsl, allowed_glsl_es, token) \ KEYWORD_WITH_ALT(reserved_glsl, reserved_glsl_es, \ allowed_glsl, allowed_glsl_es, false, token) /** * Like the KEYWORD macro, but the word is also treated as a keyword * if the given boolean expression is true. */ #define KEYWORD_WITH_ALT(reserved_glsl, reserved_glsl_es, \ allowed_glsl, allowed_glsl_es, \ alt_expr, token) \ do { \ if (yyextra->is_version(allowed_glsl, allowed_glsl_es) \ || (alt_expr)) { \ return token; \ } else if (yyextra->is_version(reserved_glsl, \ reserved_glsl_es)) { \ _mesa_glsl_error(yylloc, yyextra, \ "illegal use of reserved word `%s'", yytext); \ return ERROR_TOK; \ } else { \ yylval->identifier = strdup(yytext); \ return classify_identifier(yyextra, yytext); \ } \ } while (0) /** * A macro for handling keywords that have been present in GLSL since * its origin, but were changed into reserved words in GLSL 3.00 ES. */ #define DEPRECATED_ES_KEYWORD(token) \ do { \ if (yyextra->is_version(0, 300)) { \ _mesa_glsl_error(yylloc, yyextra, \ "illegal use of reserved word `%s'", yytext); \ return ERROR_TOK; \ } else { \ return token; \ } \ } while (0) static int literal_integer(char *text, int len, struct _mesa_glsl_parse_state *state, YYSTYPE *lval, YYLTYPE *lloc, int base) { bool is_uint = (text[len - 1] == 'u' || text[len - 1] == 'U'); const char *digits = text; /* Skip "0x" */ if (base == 16) digits += 2; #ifdef _MSC_VER unsigned __int64 value = _strtoui64(digits, NULL, base); #else unsigned long long value = strtoull(digits, NULL, base); #endif lval->n = (int)value; if (value > UINT_MAX) { /* Note that signed 0xffffffff is valid, not out of range! */ if (state->is_version(130, 300)) { _mesa_glsl_error(lloc, state, "literal value `%s' out of range", text); } else { _mesa_glsl_warning(lloc, state, "literal value `%s' out of range", text); } } else if (base == 10 && !is_uint && (unsigned)value > (unsigned)INT_MAX + 1) { /* Tries to catch unintentionally providing a negative value. * Note that -2147483648 is parsed as -(2147483648), so we don't * want to warn for INT_MAX. */ _mesa_glsl_warning(lloc, state, "signed literal value `%s' is interpreted as %d", text, lval->n); } return is_uint ? UINTCONSTANT : INTCONSTANT; } #define LITERAL_INTEGER(base) \ literal_integer(yytext, yyleng, yyextra, yylval, yylloc, base) %} %option bison-bridge bison-locations reentrant noyywrap %option nounput noyy_top_state %option never-interactive %option prefix="_mesa_glsl_lexer_" %option extra-type="struct _mesa_glsl_parse_state *" /* Note: When adding any start conditions to this list, you must also * update the "Internal compiler error" catch-all rule near the end of * this file. */ %x PP PRAGMA DEC_INT [1-9][0-9]* HEX_INT 0[xX][0-9a-fA-F]+ OCT_INT 0[0-7]* INT ({DEC_INT}|{HEX_INT}|{OCT_INT}) SPC [ \t]* SPCP [ \t]+ HASH ^{SPC}#{SPC} %% [ \r\t]+ ; /* Preprocessor tokens. */ ^[ \t]*#[ \t]*$ ; ^[ \t]*#[ \t]*version { BEGIN PP; return VERSION_TOK; } ^[ \t]*#[ \t]*extension { BEGIN PP; return EXTENSION; } {HASH}line{SPCP}{INT}{SPCP}{INT}{SPC}$ { /* Eat characters until the first digit is * encountered */ char *ptr = yytext; while (!isdigit(*ptr)) ptr++; /* Subtract one from the line number because * yylineno is zero-based instead of * one-based. */ yylineno = strtol(ptr, &ptr, 0) - 1; yylloc->source = strtol(ptr, NULL, 0); } {HASH}line{SPCP}{INT}{SPC}$ { /* Eat characters until the first digit is * encountered */ char *ptr = yytext; while (!isdigit(*ptr)) ptr++; /* Subtract one from the line number because * yylineno is zero-based instead of * one-based. */ yylineno = strtol(ptr, &ptr, 0) - 1; } ^{SPC}#{SPC}pragma{SPCP}debug{SPC}\({SPC}on{SPC}\) { BEGIN PP; return PRAGMA_DEBUG_ON; } ^{SPC}#{SPC}pragma{SPCP}debug{SPC}\({SPC}off{SPC}\) { BEGIN PP; return PRAGMA_DEBUG_OFF; } ^{SPC}#{SPC}pragma{SPCP}optimize{SPC}\({SPC}on{SPC}\) { BEGIN PP; return PRAGMA_OPTIMIZE_ON; } ^{SPC}#{SPC}pragma{SPCP}optimize{SPC}\({SPC}off{SPC}\) { BEGIN PP; return PRAGMA_OPTIMIZE_OFF; } ^{SPC}#{SPC}pragma{SPCP}STDGL{SPCP}invariant{SPC}\({SPC}all{SPC}\) { BEGIN PP; return PRAGMA_INVARIANT_ALL; } ^{SPC}#{SPC}pragma{SPCP} { BEGIN PRAGMA; } \n { BEGIN 0; yylineno++; yycolumn = 0; } . { } \/\/[^\n]* { } [ \t\r]* { } : return COLON; [_a-zA-Z][_a-zA-Z0-9]* { yylval->identifier = strdup(yytext); return IDENTIFIER; } [1-9][0-9]* { yylval->n = strtol(yytext, NULL, 10); return INTCONSTANT; } \n { BEGIN 0; yylineno++; yycolumn = 0; return EOL; } . { return yytext[0]; } \n { yylineno++; yycolumn = 0; } attribute DEPRECATED_ES_KEYWORD(ATTRIBUTE); const return CONST_TOK; bool return BOOL_TOK; float return FLOAT_TOK; int return INT_TOK; uint KEYWORD(130, 300, 130, 300, UINT_TOK); break return BREAK; continue return CONTINUE; do return DO; while return WHILE; else return ELSE; for return FOR; if return IF; discard return DISCARD; return return RETURN; bvec2 return BVEC2; bvec3 return BVEC3; bvec4 return BVEC4; ivec2 return IVEC2; ivec3 return IVEC3; ivec4 return IVEC4; uvec2 KEYWORD(130, 300, 130, 300, UVEC2); uvec3 KEYWORD(130, 300, 130, 300, UVEC3); uvec4 KEYWORD(130, 300, 130, 300, UVEC4); vec2 return VEC2; vec3 return VEC3; vec4 return VEC4; mat2 return MAT2X2; mat3 return MAT3X3; mat4 return MAT4X4; mat2x2 KEYWORD(120, 300, 120, 300, MAT2X2); mat2x3 KEYWORD(120, 300, 120, 300, MAT2X3); mat2x4 KEYWORD(120, 300, 120, 300, MAT2X4); mat3x2 KEYWORD(120, 300, 120, 300, MAT3X2); mat3x3 KEYWORD(120, 300, 120, 300, MAT3X3); mat3x4 KEYWORD(120, 300, 120, 300, MAT3X4); mat4x2 KEYWORD(120, 300, 120, 300, MAT4X2); mat4x3 KEYWORD(120, 300, 120, 300, MAT4X3); mat4x4 KEYWORD(120, 300, 120, 300, MAT4X4); in return IN_TOK; out return OUT_TOK; inout return INOUT_TOK; uniform return UNIFORM; varying DEPRECATED_ES_KEYWORD(VARYING); centroid KEYWORD(120, 300, 120, 300, CENTROID); invariant KEYWORD(120, 100, 120, 100, INVARIANT); flat KEYWORD(130, 100, 130, 300, FLAT); smooth KEYWORD(130, 300, 130, 300, SMOOTH); noperspective KEYWORD(130, 300, 130, 0, NOPERSPECTIVE); sampler1D DEPRECATED_ES_KEYWORD(SAMPLER1D); sampler2D return SAMPLER2D; sampler3D return SAMPLER3D; samplerCube return SAMPLERCUBE; sampler1DArray KEYWORD(130, 300, 130, 0, SAMPLER1DARRAY); sampler2DArray KEYWORD(130, 300, 130, 300, SAMPLER2DARRAY); sampler1DShadow DEPRECATED_ES_KEYWORD(SAMPLER1DSHADOW); sampler2DShadow return SAMPLER2DSHADOW; samplerCubeShadow KEYWORD(130, 300, 130, 300, SAMPLERCUBESHADOW); sampler1DArrayShadow KEYWORD(130, 300, 130, 0, SAMPLER1DARRAYSHADOW); sampler2DArrayShadow KEYWORD(130, 300, 130, 300, SAMPLER2DARRAYSHADOW); isampler1D KEYWORD(130, 300, 130, 0, ISAMPLER1D); isampler2D KEYWORD(130, 300, 130, 300, ISAMPLER2D); isampler3D KEYWORD(130, 300, 130, 300, ISAMPLER3D); isamplerCube KEYWORD(130, 300, 130, 300, ISAMPLERCUBE); isampler1DArray KEYWORD(130, 300, 130, 0, ISAMPLER1DARRAY); isampler2DArray KEYWORD(130, 300, 130, 300, ISAMPLER2DARRAY); usampler1D KEYWORD(130, 300, 130, 0, USAMPLER1D); usampler2D KEYWORD(130, 300, 130, 300, USAMPLER2D); usampler3D KEYWORD(130, 300, 130, 300, USAMPLER3D); usamplerCube KEYWORD(130, 300, 130, 300, USAMPLERCUBE); usampler1DArray KEYWORD(130, 300, 130, 0, USAMPLER1DARRAY); usampler2DArray KEYWORD(130, 300, 130, 300, USAMPLER2DARRAY); /* additional keywords in ARB_texture_multisample, included in GLSL 1.50 */ /* these are reserved but not defined in GLSL 3.00 */ sampler2DMS KEYWORD_WITH_ALT(150, 300, 150, 0, yyextra->ARB_texture_multisample_enable, SAMPLER2DMS); isampler2DMS KEYWORD_WITH_ALT(150, 300, 150, 0, yyextra->ARB_texture_multisample_enable, ISAMPLER2DMS); usampler2DMS KEYWORD_WITH_ALT(150, 300, 150, 0, yyextra->ARB_texture_multisample_enable, USAMPLER2DMS); sampler2DMSArray KEYWORD_WITH_ALT(150, 300, 150, 0, yyextra->ARB_texture_multisample_enable, SAMPLER2DMSARRAY); isampler2DMSArray KEYWORD_WITH_ALT(150, 300, 150, 0, yyextra->ARB_texture_multisample_enable, ISAMPLER2DMSARRAY); usampler2DMSArray KEYWORD_WITH_ALT(150, 300, 150, 0, yyextra->ARB_texture_multisample_enable, USAMPLER2DMSARRAY); /* keywords available with ARB_texture_cube_map_array_enable extension on desktop GLSL */ samplerCubeArray KEYWORD_WITH_ALT(400, 0, 400, 0, yyextra->ARB_texture_cube_map_array_enable, SAMPLERCUBEARRAY); isamplerCubeArray KEYWORD_WITH_ALT(400, 0, 400, 0, yyextra->ARB_texture_cube_map_array_enable, ISAMPLERCUBEARRAY); usamplerCubeArray KEYWORD_WITH_ALT(400, 0, 400, 0, yyextra->ARB_texture_cube_map_array_enable, USAMPLERCUBEARRAY); samplerCubeArrayShadow KEYWORD_WITH_ALT(400, 0, 400, 0, yyextra->ARB_texture_cube_map_array_enable, SAMPLERCUBEARRAYSHADOW); samplerExternalOES { if (yyextra->OES_EGL_image_external_enable) return SAMPLEREXTERNALOES; else return IDENTIFIER; } /* keywords available with ARB_gpu_shader5 */ precise KEYWORD_WITH_ALT(400, 0, 400, 0, yyextra->ARB_gpu_shader5_enable, PRECISE); /* keywords available with ARB_shader_image_load_store */ image1D KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, IMAGE1D); image2D KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, IMAGE2D); image3D KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, IMAGE3D); image2DRect KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, IMAGE2DRECT); imageCube KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, IMAGECUBE); imageBuffer KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, IMAGEBUFFER); image1DArray KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, IMAGE1DARRAY); image2DArray KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, IMAGE2DARRAY); imageCubeArray KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, IMAGECUBEARRAY); image2DMS KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, IMAGE2DMS); image2DMSArray KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, IMAGE2DMSARRAY); iimage1D KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, IIMAGE1D); iimage2D KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, IIMAGE2D); iimage3D KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, IIMAGE3D); iimage2DRect KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, IIMAGE2DRECT); iimageCube KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, IIMAGECUBE); iimageBuffer KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, IIMAGEBUFFER); iimage1DArray KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, IIMAGE1DARRAY); iimage2DArray KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, IIMAGE2DARRAY); iimageCubeArray KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, IIMAGECUBEARRAY); iimage2DMS KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, IIMAGE2DMS); iimage2DMSArray KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, IIMAGE2DMSARRAY); uimage1D KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, UIMAGE1D); uimage2D KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, UIMAGE2D); uimage3D KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, UIMAGE3D); uimage2DRect KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, UIMAGE2DRECT); uimageCube KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, UIMAGECUBE); uimageBuffer KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, UIMAGEBUFFER); uimage1DArray KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, UIMAGE1DARRAY); uimage2DArray KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, UIMAGE2DARRAY); uimageCubeArray KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, UIMAGECUBEARRAY); uimage2DMS KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, UIMAGE2DMS); uimage2DMSArray KEYWORD_WITH_ALT(130, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, UIMAGE2DMSARRAY); image1DShadow KEYWORD(130, 300, 0, 0, IMAGE1DSHADOW); image2DShadow KEYWORD(130, 300, 0, 0, IMAGE2DSHADOW); image1DArrayShadow KEYWORD(130, 300, 0, 0, IMAGE1DARRAYSHADOW); image2DArrayShadow KEYWORD(130, 300, 0, 0, IMAGE2DARRAYSHADOW); coherent KEYWORD_WITH_ALT(420, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, COHERENT); volatile KEYWORD_WITH_ALT(110, 100, 420, 0, yyextra->ARB_shader_image_load_store_enable, VOLATILE); restrict KEYWORD_WITH_ALT(420, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, RESTRICT); readonly KEYWORD_WITH_ALT(420, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, READONLY); writeonly KEYWORD_WITH_ALT(420, 300, 420, 0, yyextra->ARB_shader_image_load_store_enable, WRITEONLY); atomic_uint KEYWORD_WITH_ALT(420, 300, 420, 0, yyextra->ARB_shader_atomic_counters_enable, ATOMIC_UINT); struct return STRUCT; void return VOID_TOK; layout { if ((yyextra->is_version(140, 300)) || yyextra->AMD_conservative_depth_enable || yyextra->ARB_conservative_depth_enable || yyextra->ARB_explicit_attrib_location_enable || yyextra->ARB_explicit_uniform_location_enable || yyextra->has_separate_shader_objects() || yyextra->ARB_uniform_buffer_object_enable || yyextra->ARB_fragment_coord_conventions_enable || yyextra->ARB_shading_language_420pack_enable || yyextra->ARB_compute_shader_enable) { return LAYOUT_TOK; } else { yylval->identifier = strdup(yytext); return classify_identifier(yyextra, yytext); } } \+\+ return INC_OP; -- return DEC_OP; \<= return LE_OP; >= return GE_OP; == return EQ_OP; != return NE_OP; && return AND_OP; \|\| return OR_OP; "^^" return XOR_OP; "<<" return LEFT_OP; ">>" return RIGHT_OP; \*= return MUL_ASSIGN; \/= return DIV_ASSIGN; \+= return ADD_ASSIGN; \%= return MOD_ASSIGN; \<\<= return LEFT_ASSIGN; >>= return RIGHT_ASSIGN; &= return AND_ASSIGN; "^=" return XOR_ASSIGN; \|= return OR_ASSIGN; -= return SUB_ASSIGN; [1-9][0-9]*[uU]? { return LITERAL_INTEGER(10); } 0[xX][0-9a-fA-F]+[uU]? { return LITERAL_INTEGER(16); } 0[0-7]*[uU]? { return LITERAL_INTEGER(8); } [0-9]+\.[0-9]+([eE][+-]?[0-9]+)?[fF]? { yylval->real = glsl_strtof(yytext, NULL); return FLOATCONSTANT; } \.[0-9]+([eE][+-]?[0-9]+)?[fF]? { yylval->real = glsl_strtof(yytext, NULL); return FLOATCONSTANT; } [0-9]+\.([eE][+-]?[0-9]+)?[fF]? { yylval->real = glsl_strtof(yytext, NULL); return FLOATCONSTANT; } [0-9]+[eE][+-]?[0-9]+[fF]? { yylval->real = glsl_strtof(yytext, NULL); return FLOATCONSTANT; } [0-9]+[fF] { yylval->real = glsl_strtof(yytext, NULL); return FLOATCONSTANT; } true { yylval->n = 1; return BOOLCONSTANT; } false { yylval->n = 0; return BOOLCONSTANT; } /* Reserved words in GLSL 1.10. */ asm KEYWORD(110, 100, 0, 0, ASM); class KEYWORD(110, 100, 0, 0, CLASS); union KEYWORD(110, 100, 0, 0, UNION); enum KEYWORD(110, 100, 0, 0, ENUM); typedef KEYWORD(110, 100, 0, 0, TYPEDEF); template KEYWORD(110, 100, 0, 0, TEMPLATE); this KEYWORD(110, 100, 0, 0, THIS); packed KEYWORD_WITH_ALT(110, 100, 140, 300, yyextra->ARB_uniform_buffer_object_enable, PACKED_TOK); goto KEYWORD(110, 100, 0, 0, GOTO); switch KEYWORD(110, 100, 130, 300, SWITCH); default KEYWORD(110, 100, 130, 300, DEFAULT); inline KEYWORD(110, 100, 0, 0, INLINE_TOK); noinline KEYWORD(110, 100, 0, 0, NOINLINE); public KEYWORD(110, 100, 0, 0, PUBLIC_TOK); static KEYWORD(110, 100, 0, 0, STATIC); extern KEYWORD(110, 100, 0, 0, EXTERN); external KEYWORD(110, 100, 0, 0, EXTERNAL); interface KEYWORD(110, 100, 0, 0, INTERFACE); long KEYWORD(110, 100, 0, 0, LONG_TOK); short KEYWORD(110, 100, 0, 0, SHORT_TOK); double KEYWORD(110, 100, 400, 0, DOUBLE_TOK); half KEYWORD(110, 100, 0, 0, HALF); fixed KEYWORD(110, 100, 0, 0, FIXED_TOK); unsigned KEYWORD(110, 100, 0, 0, UNSIGNED); input KEYWORD(110, 100, 0, 0, INPUT_TOK); output KEYWORD(110, 100, 0, 0, OUTPUT); hvec2 KEYWORD(110, 100, 0, 0, HVEC2); hvec3 KEYWORD(110, 100, 0, 0, HVEC3); hvec4 KEYWORD(110, 100, 0, 0, HVEC4); dvec2 KEYWORD(110, 100, 400, 0, DVEC2); dvec3 KEYWORD(110, 100, 400, 0, DVEC3); dvec4 KEYWORD(110, 100, 400, 0, DVEC4); fvec2 KEYWORD(110, 100, 0, 0, FVEC2); fvec3 KEYWORD(110, 100, 0, 0, FVEC3); fvec4 KEYWORD(110, 100, 0, 0, FVEC4); sampler2DRect DEPRECATED_ES_KEYWORD(SAMPLER2DRECT); sampler3DRect KEYWORD(110, 100, 0, 0, SAMPLER3DRECT); sampler2DRectShadow DEPRECATED_ES_KEYWORD(SAMPLER2DRECTSHADOW); sizeof KEYWORD(110, 100, 0, 0, SIZEOF); cast KEYWORD(110, 100, 0, 0, CAST); namespace KEYWORD(110, 100, 0, 0, NAMESPACE); using KEYWORD(110, 100, 0, 0, USING); /* Additional reserved words in GLSL 1.20. */ lowp KEYWORD(120, 100, 130, 100, LOWP); mediump KEYWORD(120, 100, 130, 100, MEDIUMP); highp KEYWORD(120, 100, 130, 100, HIGHP); precision KEYWORD(120, 100, 130, 100, PRECISION); /* Additional reserved words in GLSL 1.30. */ case KEYWORD(130, 300, 130, 300, CASE); common KEYWORD(130, 300, 0, 0, COMMON); partition KEYWORD(130, 300, 0, 0, PARTITION); active KEYWORD(130, 300, 0, 0, ACTIVE); superp KEYWORD(130, 100, 0, 0, SUPERP); samplerBuffer KEYWORD(130, 300, 140, 0, SAMPLERBUFFER); filter KEYWORD(130, 300, 0, 0, FILTER); row_major KEYWORD_WITH_ALT(130, 0, 140, 0, yyextra->ARB_uniform_buffer_object_enable && !yyextra->es_shader, ROW_MAJOR); /* Additional reserved words in GLSL 1.40 */ isampler2DRect KEYWORD(140, 300, 140, 0, ISAMPLER2DRECT); usampler2DRect KEYWORD(140, 300, 140, 0, USAMPLER2DRECT); isamplerBuffer KEYWORD(140, 300, 140, 0, ISAMPLERBUFFER); usamplerBuffer KEYWORD(140, 300, 140, 0, USAMPLERBUFFER); /* Additional reserved words in GLSL ES 3.00 */ resource KEYWORD(0, 300, 0, 0, RESOURCE); patch KEYWORD(0, 300, 0, 0, PATCH); sample KEYWORD_WITH_ALT(400, 300, 400, 0, yyextra->ARB_gpu_shader5_enable, SAMPLE); subroutine KEYWORD(0, 300, 0, 0, SUBROUTINE); [_a-zA-Z][_a-zA-Z0-9]* { struct _mesa_glsl_parse_state *state = yyextra; void *ctx = state; yylval->identifier = ralloc_strdup(ctx, yytext); return classify_identifier(state, yytext); } . { return yytext[0]; } /* This is a catch-all to avoid the annoying default flex action which * matches any character and prints it. If any input ever matches this * rule, then we have made a mistake above and need to fix one or more * of the preceding patterns to match that input. */ . { _mesa_glsl_error(yylloc, yyextra, "Internal compiler error: Unexpected character: %s", yytext); } %% int classify_identifier(struct _mesa_glsl_parse_state *state, const char *name) { if (state->symbols->get_variable(name) || state->symbols->get_function(name)) return IDENTIFIER; else if (state->symbols->get_type(name)) return TYPE_IDENTIFIER; else return NEW_IDENTIFIER; } void _mesa_glsl_lexer_ctor(struct _mesa_glsl_parse_state *state, const char *string) { yylex_init_extra(state, & state->scanner); yy_scan_string(string, state->scanner); } void _mesa_glsl_lexer_dtor(struct _mesa_glsl_parse_state *state) { yylex_destroy(state->scanner); }