+ int location;
+ /**
+ * Index specified via GL_ARB_explicit_attrib_location layout
+ *
+ * \note
+ * This field is only valid if \c explicit_index is set.
+ */
+ int index;
+
+ /** Maximum output vertices in GLSL 1.50 geometry shaders. */
+ int max_vertices;
+
+ /** Stream in GLSL 1.50 geometry shaders. */
+ unsigned stream;
+
+ /**
+ * Input or output primitive type in GLSL 1.50 geometry shaders
+ * and tessellation shaders.
+ */
+ GLenum prim_type;
+
+ /**
+ * Binding specified via GL_ARB_shading_language_420pack's "binding" keyword.
+ *
+ * \note
+ * This field is only valid if \c explicit_binding is set.
+ */
+ int binding;
+
+ /**
+ * Offset specified via GL_ARB_shader_atomic_counter's "offset"
+ * keyword.
+ *
+ * \note
+ * This field is only valid if \c explicit_offset is set.
+ */
+ int offset;
+
+ /**
+ * Local size specified via GL_ARB_compute_shader's "local_size_{x,y,z}"
+ * layout qualifier. Element i of this array is only valid if
+ * flags.q.local_size & (1 << i) is set.
+ */
+ int local_size[3];
+
+ /** Tessellation evaluation shader: vertex spacing (equal, fractional even/odd) */
+ GLenum vertex_spacing;
+
+ /** Tessellation evaluation shader: vertex ordering (CW or CCW) */
+ GLenum ordering;
+
+ /** Tessellation evaluation shader: point mode */
+ bool point_mode;
+
+ /** Tessellation control shader: number of output vertices */
+ int vertices;
+
+ /**
+ * Image format specified with an ARB_shader_image_load_store
+ * layout qualifier.
+ *
+ * \note
+ * This field is only valid if \c explicit_image_format is set.
+ */
+ GLenum image_format;
+
+ /**
+ * Base type of the data read from or written to this image. Only
+ * the following enumerants are allowed: GLSL_TYPE_UINT,
+ * GLSL_TYPE_INT, GLSL_TYPE_FLOAT.
+ *
+ * \note
+ * This field is only valid if \c explicit_image_format is set.
+ */
+ glsl_base_type image_base_type;
+
+ /**
+ * Return true if and only if an interpolation qualifier is present.
+ */
+ bool has_interpolation() const;
+
+ /**
+ * Return whether a layout qualifier is present.
+ */
+ bool has_layout() const;
+
+ /**
+ * Return whether a storage qualifier is present.
+ */
+ bool has_storage() const;
+
+ /**
+ * Return whether an auxiliary storage qualifier is present.
+ */
+ bool has_auxiliary_storage() const;
+
+ /**
+ * \brief Return string representation of interpolation qualifier.
+ *
+ * If an interpolation qualifier is present, then return that qualifier's
+ * string representation. Otherwise, return null. For example, if the
+ * noperspective bit is set, then this returns "noperspective".
+ *
+ * If multiple interpolation qualifiers are somehow present, then the
+ * returned string is undefined but not null.
+ */
+ const char *interpolation_string() const;
+
+ bool merge_qualifier(YYLTYPE *loc,
+ _mesa_glsl_parse_state *state,
+ ast_type_qualifier q);
+
+ bool merge_out_qualifier(YYLTYPE *loc,
+ _mesa_glsl_parse_state *state,
+ ast_type_qualifier q,
+ ast_node* &node);
+
+ bool merge_in_qualifier(YYLTYPE *loc,
+ _mesa_glsl_parse_state *state,
+ ast_type_qualifier q,
+ ast_node* &node);
+
+ ast_subroutine_list *subroutine_list;