From f4092abdf94af6a99aff944d6264bc1284e8bdd4 Mon Sep 17 00:00:00 2001 From: Reinhard Tartler Date: Mon, 10 Oct 2011 17:43:39 +0200 Subject: Imported nx-X11-3.1.0-1.tar.gz Summary: Imported nx-X11-3.1.0-1.tar.gz Keywords: Imported nx-X11-3.1.0-1.tar.gz into Git repository --- nx-X11/extras/Mesa/src/mesa/glapi/typeexpr.py | 288 ++++++++++++++++++++++++++ 1 file changed, 288 insertions(+) create mode 100644 nx-X11/extras/Mesa/src/mesa/glapi/typeexpr.py (limited to 'nx-X11/extras/Mesa/src/mesa/glapi/typeexpr.py') diff --git a/nx-X11/extras/Mesa/src/mesa/glapi/typeexpr.py b/nx-X11/extras/Mesa/src/mesa/glapi/typeexpr.py new file mode 100644 index 000000000..eface2a52 --- /dev/null +++ b/nx-X11/extras/Mesa/src/mesa/glapi/typeexpr.py @@ -0,0 +1,288 @@ +#!/usr/bin/env python + +# (C) Copyright IBM Corporation 2005 +# All Rights Reserved. +# +# 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 +# on the rights to use, copy, modify, merge, publish, distribute, sub +# license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL +# IBM AND/OR ITS SUPPLIERS 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. +# +# Authors: +# Ian Romanick + +import string, copy + +class type_node: + def __init__(self): + self.pointer = 0 + self.const = 0 + self.signed = 1 + self.integer = 1 + + # If elements is set to non-zero, then field is an array. + self.elements = 0 + + self.name = None + self.size = 0 + return + + + def string(self): + s = "" + + if self.pointer: + s = "* " + + if self.const: + s += "const " + + if not self.pointer: + if self.integer: + if self.signed: + s += "signed " + else: + s += "unsigned " + + if self.name: + s += "%s " % (self.name) + + return s + + +class type_table: + def __init__(self): + self.types_by_name = {} + return + + + def add_type(self, type_expr): + self.types_by_name[ type_expr.get_base_name() ] = type_expr + return + + + def find_type(self, name): + if name in self.types_by_name: + return self.types_by_name[ name ] + else: + return None + + +def create_initial_types(): + tt = type_table() + + basic_types = [ ["char", 1, 1], \ + ["short", 2, 1], \ + ["int", 4, 1], \ + ["long", 4, 1], \ + ["float", 4, 0], \ + ["double", 8, 0], \ + ["enum", 4, 1] ] + + + for [type_name, type_size, integer] in basic_types: + te = type_expression(None) + tn = type_node() + tn.name = type_name + tn.size = type_size + tn.integer = integer + te.expr.append(tn) + tt.add_type( te ) + + type_expression.built_in_types = tt + return + + +class type_expression: + built_in_types = None + + def __init__(self, type_string, extra_types = None): + self.expr = [] + + if not type_string: return + + self.original_string = type_string + + if not type_expression.built_in_types: + raise RuntimeError("create_initial_types must be called before creating type_expression objects.") + + + elements = string.split( string.replace( type_string, "*", " * " ) ) + + const = 0 + t = None + signed = 0 + unsigned = 0 + + for i in elements: + if i == "const": + if t and t.pointer: + t.const = 1 + else: + const = 1 + elif i == "signed": + signed = 1 + elif i == "unsigned": + unsigned = 1 + elif i == "*": + # This is a quirky special-case because of the + # way the C works for types. If 'unsigned' is + # specified all by itself, it is treated the + # same as "unsigned int". + + if unsigned: + self.set_base_type( "int", signed, unsigned, const, extra_types ) + const = 0 + signed = 0 + unsigned = 0 + + if not self.expr: + raise RuntimeError("Invalid type expression (dangling pointer)") + + if signed: + raise RuntimeError("Invalid type expression (signed / unsigned applied to pointer)") + + t = type_node() + t.pointer = 1 + self.expr.append( t ) + else: + if self.expr: + raise RuntimeError('Invalid type expression (garbage after pointer qualifier -> "%s")' % (self.original_string)) + + self.set_base_type( i, signed, unsigned, const, extra_types ) + const = 0 + signed = 0 + unsigned = 0 + + if signed and unsigned: + raise RuntimeError("Invalid type expression (both signed and unsigned specified)") + + + if const: + raise RuntimeError("Invalid type expression (dangling const)") + + if unsigned: + raise RuntimeError("Invalid type expression (dangling signed)") + + if signed: + raise RuntimeError("Invalid type expression (dangling unsigned)") + + return + + + def set_base_type(self, type_name, signed, unsigned, const, extra_types): + te = type_expression.built_in_types.find_type( type_name ) + if not te: + te = extra_types.find_type( type_name ) + + if not te: + raise RuntimeError('Unknown base type "%s".' % (type_name)) + + self.expr = copy.deepcopy(te.expr) + + t = self.expr[ len(self.expr) - 1 ] + t.const = const + if signed: + t.signed = 1 + elif unsigned: + t.signed = 0 + + + def set_base_type_node(self, tn): + self.expr = [tn] + return + + + def set_elements(self, count): + tn = self.expr[0] + + tn.elements = count + return + + + def string(self): + s = "" + for t in self.expr: + s += t.string() + + return s + + + def get_base_type_node(self): + return self.expr[0] + + + def get_base_name(self): + if len(self.expr): + return self.expr[0].name + else: + return None + + + def get_element_size(self): + tn = self.expr[0] + + if tn.elements: + return tn.elements * tn.size + else: + return tn.size + + + def get_element_count(self): + tn = self.expr[0] + return tn.elements + + + def get_stack_size(self): + tn = self.expr[ len(self.expr) - 1 ] + + if tn.elements or tn.pointer: + return 4 + elif not tn.integer: + return tn.size + else: + return 4 + + + def is_pointer(self): + tn = self.expr[ len(self.expr) - 1 ] + return tn.pointer + + + def format_string(self): + tn = self.expr[ len(self.expr) - 1 ] + if tn.pointer: + return "%p" + elif not tn.integer: + return "%f" + else: + return "%d" + + + +if __name__ == '__main__': + + types_to_try = [ "int", "int *", "const int *", "int * const", "const int * const", \ + "unsigned * const *", \ + "float", "const double", "double * const"] + + create_initial_types() + + for t in types_to_try: + print 'Trying "%s"...' % (t) + te = type_expression( t ) + print 'Got "%s" (%u, %u).' % (te.string(), te.get_stack_size(), te.get_element_size()) -- cgit v1.2.3