lol/test/sandbox/lex/lolfx.y

%{
#include <cstdio>
#include <iostream>

extern "C" int yylex();
extern "C" int yyparse();
extern "C" FILE *yyin;
extern "C" int yylineno;

void yyerror(const char *s);
%}

/* The classic Bison union trick */
%union
{
    int ival;
    float fval;
    char *sval;
}

 /*
  * GLSL keywords
  * FIXME: unsorted
  */

%token GT_SUBROUTINE GT_PATCH GT_SAMPLE GT_FLAT GT_SMOOTH GT_LAYOUT
%token GT_SAMPLER1DSHADOW GT_SAMPLER2DSHADOW GT_SAMPLERCUBESHADOW
%token GT_SAMPLER1DARRAY GT_SAMPLER2DARRAY GT_SAMPLER1DARRAYSHADOW
%token GT_SAMPLER2DARRAYSHADOW GT_ISAMPLER1D GT_ISAMPLER2D GT_ISAMPLER3D
%token GT_ISAMPLERCUBE GT_ISAMPLER1DARRAY GT_ISAMPLER2DARRAY GT_USAMPLER1D
%token GT_USAMPLER2D GT_USAMPLER3D GT_USAMPLERCUBE GT_USAMPLER1DARRAY
%token GT_USAMPLER2DARRAY GT_SAMPLER2DRECT GT_SAMPLER2DRECTSHADOW
%token GT_ISAMPLER2DRECT GT_USAMPLER2DRECT GT_SAMPLERBUFFER GT_ISAMPLERBUFFER
%token GT_USAMPLERBUFFER GT_SAMPLERCUBEARRAY GT_SAMPLERCUBEARRAYSHADOW
%token GT_ISAMPLERCUBEARRAY GT_USAMPLERCUBEARRAY GT_SAMPLER2DMS GT_ISAMPLER2DMS
%token GT_USAMPLER2DMS GT_SAMPLER2DMSARRAY GT_ISAMPLER2DMSARRAY
%token GT_USAMPLER2DMSARRAY GT_IDENTIFIER GT_TYPE_NAME GT_FLOATCONSTANT
%token GT_INTCONSTANT GT_UINTCONSTANT GT_BOOLCONSTANT GT_FIELD_SELECTION
%token GT_LEFT_OP GT_RIGHT_OP GT_INC_OP GT_DEC_OP GT_LE_OP GT_GE_OP GT_EQ_OP
%token GT_NE_OP GT_AND_OP GT_OR_OP GT_XOR_OP GT_MUL_ASSIGN GT_DIV_ASSIGN
%token GT_ADD_ASSIGN GT_MOD_ASSIGN GT_LEFT_ASSIGN GT_RIGHT_ASSIGN GT_AND_ASSIGN
%token GT_XOR_ASSIGN GT_OR_ASSIGN GT_SUB_ASSIGN GT_LEFT_PAREN GT_RIGHT_PAREN
%token GT_LEFT_BRACKET GT_RIGHT_BRACKET GT_LEFT_BRACE GT_RIGHT_BRACE GT_DOT
%token GT_COMMA GT_COLON GT_EQUAL GT_SEMICOLON GT_BANG GT_DASH GT_TILDE GT_PLUS
%token GT_STAR GT_SLASH GT_PERCENT GT_LEFT_ANGLE GT_RIGHT_ANGLE GT_VERTICAL_BAR
%token GT_CARET GT_AMPERSAND GT_QUESTION GT_INVARIANT GT_HIGH_PRECISION
%token GT_MEDIUM_PRECISION GT_LOW_PRECISION GT_PRECISION GT_BVEC2 GT_BVEC3
%token GT_BVEC4 GT_IVEC2 GT_IVEC3 GT_IVEC4 GT_UVEC2 GT_UVEC3 GT_UVEC4 GT_VEC2
%token GT_VEC3 GT_VEC4 GT_MAT2 GT_MAT2X2 GT_MAT2X3 GT_MAT2X4 GT_MAT3 GT_MAT3X2
%token GT_MAT3X3 GT_MAT3X4 GT_MAT4 GT_MAT4X2 GT_MAT4X3 GT_MAT4X4 GT_DVEC2
%token GT_DVEC3 GT_DVEC4 GT_DMAT2 GT_DMAT2X2 GT_DMAT2X3 GT_DMAT2X4 GT_DMAT3
%token GT_DMAT3X2 GT_DMAT3X3 GT_DMAT3X4 GT_DMAT4 GT_DMAT4X2 GT_DMAT4X3
%token GT_DMAT4X4

 /*
  * HLSL and GLSL keywords
  */

%token GHT_BOOL GHT_BREAK GHT_CASE GHT_CENTROID GHT_CONST GHT_CONTINUE
%token GHT_DEFAULT GHT_DISCARD GHT_DO GHT_DOUBLE GHT_ELSE GHT_FLOAT GHT_FOR
%token GHT_IF GHT_IN GHT_INOUT GHT_INT GHT_NOPERSPECTIVE GHT_OUT GHT_RETURN
%token GHT_SAMPLER1D GHT_SAMPLER2D GHT_SAMPLER3D GHT_SAMPLERCUBE GHT_STRUCT
%token GHT_SWITCH GHT_UINT GHT_UNIFORM GHT_VOID GHT_WHILE

%token HGT_BOOL HGT_BREAK HGT_CASE HGT_CENTROID HGT_CONST HGT_CONTINUE
%token HGT_DEFAULT HGT_DISCARD HGT_DO HGT_DOUBLE HGT_ELSE HGT_FLOAT HGT_FOR
%token HGT_IF HGT_IN HGT_INOUT HGT_INT HGT_NOPERSPECTIVE HGT_OUT HGT_RETURN
%token HGT_SAMPLER1D HGT_SAMPLER2D HGT_SAMPLER3D HGT_SAMPLERCUBE HGT_STRUCT
%token HGT_SWITCH HGT_UINT HGT_UNIFORM HGT_VOID HGT_WHILE

 /*
  * HLSL keywords
  */

%token HT_APPENDSTRUCTUREDBUFFER HT_ASM HT_ASM_FRAGMENT HT_BLENDSTATE
%token HT_BUFFER HT_BYTEADDRESSBUFFER HT_CBUFFER
%token HT_COLUMN_MAJOR HT_COMPILE HT_COMPILE_FRAGMENT HT_COMPILESHADER
%token HT_COMPUTESHADER HT_CONSUMESTRUCTUREDBUFFER
%token HT_DEPTHSTENCILSTATE HT_DEPTHSTENCILVIEW
%token HT_DOMAINSHADER HT_DWORD HT_EXTERN HT_FALSE
%token HT_FXGROUP HT_GEOMETRYSHADER HT_GROUPSHARED HT_HALF HT_HULLSHADER
%token HT_INLINE HT_INPUTPATCH HT_INTERFACE HT_LINE
%token HT_LINEADJ HT_LINEAR HT_LINESTREAM HT_MATRIX HT_NAMESPACE
%token HT_NOINTERPOLATION HT_NULL HT_OUTPUTPATCH
%token HT_PACKOFFSET HT_PASS HT_PIXELFRAGMENT HT_PIXELSHADER HT_POINT
%token HT_POINTSTREAM HT_PRECISE HT_RASTERIZERSTATE HT_RENDERTARGETVIEW
%token HT_REGISTER HT_ROW_MAJOR HT_RWBUFFER HT_RWBYTEADDRESSBUFFER
%token HT_RWSTRUCTUREDBUFFER HT_RWTEXTURE1D HT_RWTEXTURE1DARRAY HT_RWTEXTURE2D
%token HT_RWTEXTURE2DARRAY HT_RWTEXTURE3D HT_SAMPLER
%token HT_SAMPLER_STATE HT_SAMPLERSTATE
%token HT_SAMPLERCOMPARISONSTATE HT_SHARED HT_SNORM HT_STATEBLOCK
%token HT_STATEBLOCK_STATE HT_STATIC HT_STRING
%token HT_STRUCTUREDBUFFER HT_TBUFFER HT_TECHNIQUE HT_TECHNIQUE10
%token HT_TECHNIQUE11XZ HT_TEXTURE HT_TEXTURE1D HT_TEXTURE1DARRAY HT_TEXTURE2D
%token HT_TEXTURE2DARRAY HT_TEXTURE2DMS HT_TEXTURE2DMSARRAY HT_TEXTURE3D
%token HT_TEXTURECUBE HT_TEXTURECUBEARRAY HT_TRUE HT_TYPEDEF HT_TRIANGLE
%token HT_TRIANGLEADJ HT_TRIANGLESTREAM HT_UNORM HT_VECTOR
%token HT_VERTEXFRAGMENT HT_VERTEXSHADER HT_VOLATILE

 /*
  * HLSL types
  */

%token HT_BOOL1 HT_BOOL1x1 HT_BOOL2x1 HT_BOOL3x1 HT_BOOL4x1
%token HT_BOOL2 HT_BOOL1x2 HT_BOOL2x2 HT_BOOL3x2 HT_BOOL4x2
%token HT_BOOL3 HT_BOOL1x3 HT_BOOL2x3 HT_BOOL3x3 HT_BOOL4x3
%token HT_BOOL4 HT_BOOL1x4 HT_BOOL2x4 HT_BOOL3x4 HT_BOOL4x4

%token HT_FLOAT1 HT_FLOAT1x1 HT_FLOAT2x1 HT_FLOAT3x1 HT_FLOAT4x1
%token HT_FLOAT2 HT_FLOAT1x2 HT_FLOAT2x2 HT_FLOAT3x2 HT_FLOAT4x2
%token HT_FLOAT3 HT_FLOAT1x3 HT_FLOAT2x3 HT_FLOAT3x3 HT_FLOAT4x3
%token HT_FLOAT4 HT_FLOAT1x4 HT_FLOAT2x4 HT_FLOAT3x4 HT_FLOAT4x4

%token HT_DOUBLE1 HT_DOUBLE1x1 HT_DOUBLE2x1 HT_DOUBLE3x1 HT_DOUBLE4x1
%token HT_DOUBLE2 HT_DOUBLE1x2 HT_DOUBLE2x2 HT_DOUBLE3x2 HT_DOUBLE4x2
%token HT_DOUBLE3 HT_DOUBLE1x3 HT_DOUBLE2x3 HT_DOUBLE3x3 HT_DOUBLE4x3
%token HT_DOUBLE4 HT_DOUBLE1x4 HT_DOUBLE2x4 HT_DOUBLE3x4 HT_DOUBLE4x4

%token HT_DWORD1 HT_DWORD1x1 HT_DWORD2x1 HT_DWORD3x1 HT_DWORD4x1
%token HT_DWORD2 HT_DWORD1x2 HT_DWORD2x2 HT_DWORD3x2 HT_DWORD4x2
%token HT_DWORD3 HT_DWORD1x3 HT_DWORD2x3 HT_DWORD3x3 HT_DWORD4x3
%token HT_DWORD4 HT_DWORD1x4 HT_DWORD2x4 HT_DWORD3x4 HT_DWORD4x4

%token HT_INT1 HT_INT1x1 HT_INT2x1 HT_INT3x1 HT_INT4x1
%token HT_INT2 HT_INT1x2 HT_INT2x2 HT_INT3x2 HT_INT4x2
%token HT_INT3 HT_INT1x3 HT_INT2x3 HT_INT3x3 HT_INT4x3
%token HT_INT4 HT_INT1x4 HT_INT2x4 HT_INT3x4 HT_INT4x4

%token HT_UINT1 HT_UINT1x1 HT_UINT2x1 HT_UINT3x1 HT_UINT4x1
%token HT_UINT2 HT_UINT1x2 HT_UINT2x2 HT_UINT3x2 HT_UINT4x2
%token HT_UINT3 HT_UINT1x3 HT_UINT2x3 HT_UINT3x3 HT_UINT4x3
%token HT_UINT4 HT_UINT1x4 HT_UINT2x4 HT_UINT3x4 HT_UINT4x4

 /*
  * HLSL preprocessor directives
  */

%token PREPROCESSOR_DEFINE PREPROCESSOR_ELIF PREPROCESSOR_ELSE
%token PREPROCESSOR_ENDIF PREPROCESSOR_ERROR PREPROCESSOR_IF
%token PREPROCESSOR_IFDEF PREPROCESSOR_IFNDEF PREPROCESSOR_INCLUDE
%token PREPROCESSOR_LINE PREPROCESSOR_PRAGMA PREPROCESSOR_UNDEF

 /*
  * HLSL reserved keywords
  */

%token HT_AUTO HT_CATCH HT_CHAR HT_CLASS HT_CONST_CAST
%token HT_DELETE HT_DYNAMIC_CAST HT_ENUM HT_EXPLICIT HT_FRIEND HT_GOTO HT_LONG
%token HT_MUTABLE HT_NEW HT_OPERATOR HT_PRIVATE HT_PROTECTED HT_PUBLIC
%token HT_REINTERPRET_CAST HT_SHORT HT_SIGNED HT_SIZEOF HT_STATIC_CAST
%token HT_TEMPLATE HT_THIS HT_THROW HT_TRY HT_TYPENAME HT_UNION HT_UNSIGNED
%token HT_USING HT_VIRTUAL

 /*
  * Language keywords
  */

%token T_INC T_DEC T_LE T_GE T_EQ T_NE T_LEFT T_RIGHT T_AND T_OR T_XOR
%token T_MULEQ T_DIVEQ T_MODEQ T_ADDEQ T_SUBEQ T_LEFTEQ T_RIGHTEQ T_ANDEQ
%token T_XOREQ T_OREQ

 /*
  * Temporary shit
  */

%token <ival> INT
%token <fval> FLOAT
%token <sval> STRING NAME

%%

fx:
    section_list
    ;

section_list:
    section
    | section_list section
    ;

section:
    technique
    | shader
    ;

 /*
  * Grammar for techniques
  */

technique:
    HT_TECHNIQUE NAME '{' pass_list '}' { std::cout << "New tech" << std::endl; }
    ;

 /*
  * Grammar for passes
  */

pass_list:
    pass
    | pass_list pass
    ;

pass:
    HT_PASS NAME '{' pass_stmt_list '}' { std::cout << "New pass" << std::endl; }
    ;

pass_stmt_list:
    pass_stmt
    | pass_stmt_list pass_stmt
    ;

pass_stmt:
    ';'
    | NAME '=' NAME ';'
    | NAME '=' INT ';'
    | NAME '[' INT ']' '=' NAME ';'
    | NAME '[' INT ']' '=' INT ';'
    ;

 /*
  * Grammar for GLSL
  */

glsl_variable_identifier:
    GLSL_IDENTIFIER
    ;

glsl_primary_expression:
    glsl_variable_identifier
    | INTCONSTANT
    | UINTCONSTANT
    | FLOATCONSTANT
    | BOOLCONSTANT
    | '(' glsl_expression ')'
    ;

glsl_postfix_expression:
    glsl_primary_expression
    | glsl_postfix_expression '[' glsl_integer_expression ']'
    | glsl_function_call
    | glsl_postfix_expression '.' FIELD_SELECTION
    | glsl_postfix_expression T_INC
    | glsl_postfix_expression T_DEC
    ;

glsl_integer_expression:
    glsl_expression
    ;

glsl_function_call:
    glsl_function_call_or_method
    ;

glsl_function_call_or_method:
    glsl_function_call_generic
    | glsl_postfix_expression '.' glsl_function_call_generic
    ;

glsl_function_call_generic:
    glsl_function_call_header_with_parameters ')'
    | glsl_function_call_header_no_parameters ')'
    ;

glsl_function_call_header_no_parameters:
    glsl_function_call_header GHT_VOID
    | glsl_function_call_header
    ;

glsl_function_call_header_with_parameters:
    glsl_function_call_header glsl_assignment_expression
    | glsl_function_call_header_with_parameters ',' glsl_assignment_expression
    ;

glsl_function_call_header:
    glsl_function_identifier '('
    ;

glsl_function_identifier:
    glsl_type_specifier
    | IDENTIFIER
    | FIELD_SELECTION
    ;

glsl_unary_expression:
    glsl_postfix_expression
    | T_INC glsl_unary_expression
    | T_DEC glsl_unary_expression
    | glsl_unary_operator glsl_unary_expression
    ;

glsl_unary_operator:
    '+'
    | '-'
    | '!'
    | '~'
    ;

glsl_multiplicative_expression:
    glsl_unary_expression
    | glsl_multiplicative_expression '*' glsl_unary_expression
    | glsl_multiplicative_expression '/' glsl_unary_expression
    | glsl_multiplicative_expression '%' glsl_unary_expression
    ;

glsl_additive_expression:
    glsl_multiplicative_expression
    | glsl_additive_expression '+' glsl_multiplicative_expression
    | glsl_additive_expression '-' glsl_multiplicative_expression
    ;

glsl_shift_expression:
    glsl_additive_expression
    | glsl_shift_expression T_LEFT glsl_additive_expression
    | glsl_shift_expression T_RIGHT glsl_additive_expression
    ;

glsl_relational_expression:
    glsl_shift_expression
    | glsl_relational_expression '<' glsl_shift_expression
    | glsl_relational_expression '>' glsl_shift_expression
    | glsl_relational_expression T_LE glsl_shift_expression
    | glsl_relational_expression T_GE glsl_shift_expression
    ;

glsl_equality_expression:
    glsl_relational_expression
    | glsl_equality_expression T_EQ glsl_relational_expression
    | glsl_equality_expression T_NE glsl_relational_expression
    ;

glsl_and_expression:
    glsl_equality_expression
    | glsl_and_expression '&' glsl_equality_expression
    ;

glsl_exclusive_or_expression:
    glsl_and_expression
    | glsl_exclusive_or_expression '^' glsl_and_expression
    ;

glsl_inclusive_or_expression:
    glsl_exclusive_or_expression
    | glsl_inclusive_or_expression '|' glsl_exclusive_or_expression
    ;

glsl_logical_and_expression:
    glsl_inclusive_or_expression
    | glsl_logical_and_expression T_AND glsl_inclusive_or_expression
    ;

glsl_logical_xor_expression:
    glsl_logical_and_expression
    | glsl_logical_xor_expression T_XOR glsl_logical_and_expression
    ;

glsl_logical_or_expression:
    glsl_logical_xor_expression
    | glsl_logical_or_expression T_OR glsl_logical_xor_expression
    ;

glsl_conditional_expression:
    glsl_logical_or_expression
    | glsl_logical_or_expression '?' glsl_expression ':' glsl_assignment_expression
    ;

glsl_assignment_expression:
    glsl_conditional_expression
    | glsl_unary_expression glsl_assignment_operator glsl_assignment_expression
    ;

glsl_assignment_operator:
    '='
    | T_MULEQ
    | T_DIVEQ
    | T_MODEQ
    | T_ADDEQ
    | T_SUBEQ
    | T_LEFTEQ
    | T_RIGHTEQ
    | T_ANDEQ
    | T_XOREQ
    | T_OREQ
    ;

glsl_expression:
    glsl_assignment_expression
    | glsl_expression ',' glsl_assignment_expression
    ;

glsl_constant_expression:
    glsl_conditional_expression
    ;

glsl_declaration:
    glsl_function_prototype ';'
    | glsl_init_declarator_list ';'
    | PRECISION glsl_precision_qualifier glsl_type_specifier_no_prec ';'
    | glsl_type_qualifier IDENTIFIER '{' glsl_struct_declaration_list '}' ';'
    | glsl_type_qualifier IDENTIFIER '{' glsl_struct_declaration_list '}' IDENTIFIER ';'
    | glsl_type_qualifier IDENTIFIER '{' glsl_struct_declaration_list '}' IDENTIFIER '[' ']' ';'
    | glsl_type_qualifier IDENTIFIER '{' glsl_struct_declaration_list '}' IDENTIFIER '[' glsl_constant_expression ']' ';'
    | glsl_type_qualifier ';'
    ;

glsl_function_prototype:
    glsl_function_declarator ')'
    ;

glsl_function_declarator:
    glsl_function_header
    | glsl_function_header_with_parameters
    ;

glsl_function_header_with_parameters:
    glsl_function_header glsl_parameter_declaration
    | glsl_function_header_with_parameters ',' glsl_parameter_declaration
    ;

glsl_function_header:
    glsl_fully_specified_type IDENTIFIER '('
    ;

glsl_parameter_declarator:
    glsl_type_specifier IDENTIFIER
    | glsl_type_specifier IDENTIFIER '[' glsl_constant_expression ']'
    ;

glsl_parameter_declaration:
    glsl_parameter_type_qualifier glsl_parameter_qualifier glsl_parameter_declarator
    | glsl_parameter_qualifier glsl_parameter_declarator
    | glsl_parameter_type_qualifier glsl_parameter_qualifier glsl_parameter_type_specifier
    | glsl_parameter_qualifier glsl_parameter_type_specifier
    ;

glsl_parameter_qualifier:
    /* empty */
    | GHT_IN
    | GHT_OUT
    | GHT_INOUT
    ;

glsl_parameter_type_specifier:
    glsl_type_specifier
    ;

glsl_init_declarator_list:
    glsl_single_declaration
    | glsl_init_declarator_list ',' IDENTIFIER
    | glsl_init_declarator_list ',' IDENTIFIER '[' ']'
    | glsl_init_declarator_list ',' IDENTIFIER '[' glsl_constant_expression ']'
    | glsl_init_declarator_list ',' IDENTIFIER '[' ']' '=' glsl_initializer
    | glsl_init_declarator_list ',' IDENTIFIER '[' glsl_constant_expression ']' '=' glsl_initializer
    | glsl_init_declarator_list ',' IDENTIFIER '=' glsl_initializer
    ;

glsl_single_declaration:
    glsl_fully_specified_type
    | glsl_fully_specified_type IDENTIFIER
    | glsl_fully_specified_type IDENTIFIER '[' ']'
    | glsl_fully_specified_type IDENTIFIER '[' glsl_constant_expression ']'
    | glsl_fully_specified_type IDENTIFIER '[' ']' '=' glsl_initializer
    | glsl_fully_specified_type IDENTIFIER '[' glsl_constant_expression ']' '=' glsl_initializer
    | glsl_fully_specified_type IDENTIFIER '=' glsl_initializer
    | INVARIANT IDENTIFIER
    ;

glsl_fully_specified_type:
    glsl_type_specifier
    | glsl_type_qualifier glsl_type_specifier
    ;

glsl_invariant_qualifier:
    INVARIANT
    ;

glsl_interpolation_qualifier:
    GT_SMOOTH
    | GT_FLAT
    | GHT_NOPERSPECTIVE
    ;

glsl_layout_qualifier:
    GT_LAYOUT '(' glsl_layout_qualifier_id_list ')'
    ;

glsl_layout_qualifier_id_list:
    glsl_layout_qualifier_id
    | glsl_layout_qualifier_id_list ',' glsl_layout_qualifier_id
    ;

glsl_layout_qualifier_id:
    IDENTIFIER
    | IDENTIFIER '=' INTCONSTANT
    ;

glsl_parameter_type_qualifier:
    GHT_CONST
    ;

glsl_type_qualifier:
    glsl_storage_qualifier
    | glsl_layout_qualifier
    | glsl_layout_qualifier glsl_storage_qualifier
    | glsl_interpolation_qualifier glsl_storage_qualifier
    | glsl_interpolation_qualifier
    | glsl_invariant_qualifier glsl_storage_qualifier
    | glsl_invariant_qualifier glsl_interpolation_qualifier glsl_storage_qualifier
    | glsl_invariant_qualifier
    ;

glsl_storage_qualifier:
    GHT_CONST
    | GHT_IN
    | GHT_OUT
    | GHT_CENTROID GHT_IN
    | GHT_CENTROID GHT_OUT
    | GT_PATCH GHT_IN
    | GT_PATCH GHT_OUT
    | GT_SAMPLE GHT_IN
    | GT_SAMPLE GHT_OUT
    | GHT_UNIFORM
    ;

glsl_type_specifier:
    glsl_type_specifier_no_prec
    | glsl_precision_qualifier glsl_type_specifier_no_prec
    ;

glsl_type_specifier_no_prec:
    glsl_type_specifier_nonarray
    | glsl_type_specifier_nonarray '[' ']'
    | glsl_type_specifier_nonarray '[' glsl_constant_expression ']'

glsl_type_specifier_nonarray:
    GHT_VOID
    | GHT_FLOAT
    | GHT_DOUBLE
    | GHT_INT
    | GHT_UINT
    | GHT_BOOL
    | GT_VEC2
    | GT_VEC3
    | GT_VEC4
    | GT_DVEC2
    | GT_DVEC3
    | GT_DVEC4
    | GT_BVEC2
    | GT_BVEC3
    | GT_BVEC4
    | GT_IVEC2
    | GT_IVEC3
    | GT_IVEC4
    | GT_UVEC2
    | GT_UVEC3
    | GT_UVEC4
    | GT_MAT2
    | GT_MAT3
    | GT_MAT4
    | GT_MAT2X2
    | GT_MAT2X3
    | GT_MAT2X4
    | GT_MAT3X2
    | GT_MAT3X3
    | GT_MAT3X4
    | GT_MAT4X2
    | GT_MAT4X3
    | GT_MAT4X4
    | GT_DMAT2
    | GT_DMAT3
    | GT_DMAT4
    | GT_DMAT2X2
    | GT_DMAT2X3
    | GT_DMAT2X4
    | GT_DMAT3X2
    | GT_DMAT3X3
    | GT_DMAT3X4
    | GT_DMAT4X2
    | GT_DMAT4X3
    | GT_DMAT4X4
    | GHT_SAMPLER1D
    | GHT_SAMPLER2D
    | GHT_SAMPLER3D
    | GHT_SAMPLERCUBE
    | GT_SAMPLER1DSHADOW
    | GT_SAMPLER2DSHADOW
    | GT_SAMPLERCUBESHADOW
    | GT_SAMPLER1DARRAY
    | GT_SAMPLER2DARRAY
    | GT_SAMPLER1DARRAYSHADOW
    | GT_SAMPLER2DARRAYSHADOW
    | GT_SAMPLERCUBEARRAY
    | GT_SAMPLERCUBEARRAYSHADOW
    | GT_ISAMPLER1D
    | GT_ISAMPLER2D
    | GT_ISAMPLER3D
    | GT_ISAMPLERCUBE
    | GT_ISAMPLER1DARRAY
    | GT_ISAMPLER2DARRAY
    | GT_ISAMPLERCUBEARRAY
    | GT_USAMPLER1D
    | GT_USAMPLER2D
    | GT_USAMPLER3D
    | GT_USAMPLERCUBE
    | GT_USAMPLER1DARRAY
    | GT_USAMPLER2DARRAY
    | GT_USAMPLERCUBEARRAY
    | GT_SAMPLER2DRECT
    | GT_SAMPLER2DRECTSHADOW
    | GT_ISAMPLER2DRECT
    | GT_USAMPLER2DRECT
    | GT_SAMPLERBUFFER
    | GT_ISAMPLERBUFFER
    | GT_USAMPLERBUFFER
    | GT_SAMPLER2DMS
    | GT_ISAMPLER2DMS
    | GT_USAMPLER2DMS
    | GT_SAMPLER2DMSARRAY
    | GT_ISAMPLER2DMSARRAY
    | GT_USAMPLER2DMSARRAY
    | glsl_struct_specifier
    | TYPE_NAME
    ;

glsl_precision_qualifier:
    HIGH_PRECISION
    | MEDIUM_PRECISION
    | LOW_PRECISION
    ;

glsl_struct_specifier:
    GHT_STRUCT IDENTIFIER '{' glsl_struct_declaration_list '}'
    | GHT_STRUCT '{' glsl_struct_declaration_list '}'
    ;

glsl_struct_declaration_list:
    glsl_struct_declaration
    | glsl_struct_declaration_list glsl_struct_declaration
    ;

glsl_struct_declaration:
    glsl_type_specifier glsl_struct_declarator_list ';'
    | glsl_type_qualifier glsl_type_specifier glsl_struct_declarator_list ';'
    ;

glsl_struct_declarator_list:
    glsl_struct_declarator
    | glsl_struct_declarator_list ',' glsl_struct_declarator
    ;

glsl_struct_declarator:
    IDENTIFIER
    | IDENTIFIER '[' ']'
    | IDENTIFIER '[' glsl_constant_expression ']'
    ;

glsl_initializer:
    glsl_assignment_expression
    ;

glsl_declaration_statement:
    glsl_declaration
    ;

glsl_statement:
    glsl_compound_statement
    | glsl_simple_statement
    ;

glsl_simple_statement:
    glsl_declaration_statement
    | glsl_expression_statement
    | glsl_selection_statement
    | glsl_switch_statement
    | glsl_case_label
    | glsl_iteration_statement
    | glsl_jump_statement
    ;

glsl_compound_statement:
    '{' '}'
    | '{' glsl_statement_list '}'
    ;

glsl_statement_no_new_scope:
    glsl_compound_statement_no_new_scope
    | glsl_simple_statement
    ;

glsl_compound_statement_no_new_scope:
    '{' '}'
    | '{' glsl_statement_list '}'
    ;

glsl_statement_list:
    glsl_statement
    | glsl_statement_list glsl_statement
    ;

glsl_expression_statement:
    ';'
    | glsl_expression ';'
    ;

glsl_selection_statement:
    GHT_IF '(' glsl_expression ')' glsl_selection_rest_statement
    ;

glsl_selection_rest_statement:
    glsl_statement GHT_ELSE glsl_statement
    | glsl_statement
    ;

glsl_condition:
    glsl_expression
    | glsl_fully_specified_type IDENTIFIER '=' glsl_initializer
    ;

glsl_switch_statement:
    GHT_SWITCH '(' glsl_expression ')' '{' glsl_switch_statement_list '}'
    ;

glsl_switch_statement_list:
    /* nothing */
    | glsl_statement_list
    ;

glsl_case_label:
    GHT_CASE glsl_expression ':'
    | GHT_DEFAULT ':'
    ;

glsl_iteration_statement:
    GHT_WHILE '(' glsl_condition ')' glsl_statement_no_new_scope
    | GHT_DO glsl_statement GHT_WHILE '(' glsl_expression ')' ';'
    | GHT_FOR '(' glsl_for_init_statement glsl_for_rest_statement ')' glsl_statement_no_new_scope
    ;

glsl_for_init_statement:
    glsl_expression_statement
    | glsl_declaration_statement
    ;

glsl_conditionopt:
    glsl_condition
    | /* empty */
    ;

glsl_for_rest_statement:
    glsl_conditionopt ';'
    | glsl_conditionopt ';' glsl_expression
    ;

glsl_jump_statement:
    GHT_CONTINUE ';'
    | GHT_BREAK ';'
    | GHT_RETURN ';'
    | GHT_RETURN glsl_expression ';'
    | GHT_DISCARD ';'
    ;

glsl_translation_unit:
    glsl_external_declaration
    glsl_translation_unit glsl_external_declaration
    ;

glsl_external_declaration:
    glsl_function_definition
    | glsl_declaration
    ;

glsl_function_definition:
    glsl_function_prototype glsl_compound_statement_no_new_scope
    ;

 /*
  * Grammar for shaders
  */

shader:
    shader_region shader_code
    | shader_region
    ;

shader_region:
    '#' NAME shader_name { std::cout << "new shader " << $2 << std::endl; }
    ;

shader_name:
    NAME
    | shader_name '.' NAME
    ;

shader_code:
    INT shader_code      { std::cout << "int: " << $1 << std::endl; }
    | FLOAT shader_code  { std::cout << "float: " << $1 << std::endl; }
    | STRING shader_code { std::cout << "string: " << $1 << std::endl; }
    | INT            { std::cout << "int: " << $1 << std::endl; }
    | FLOAT          { std::cout << "float: " << $1 << std::endl; }
    | STRING         { std::cout << "string: " << $1 << std::endl; }
    ;

%%

main()
{
    yyin = fopen("test.lolfx", "r");
    do
    {
        yyparse();
    }
    while (!feof(yyin));

    fclose(yyin);
}

void yyerror(const char *s)
{
    std::cout << "Parse error line " << yylineno << ": " << s << std::endl;
    exit(-1);
}