Move all API specs to a separate dir.

[apitrace] / specs / scripts / gltxt.py

diff --git a/specs/scripts/gltxt.py b/specs/scripts/gltxt.py
new file mode 100755 (executable)
index 0000000..c6be7c1
--- /dev/null
+++ b/specs/scripts/gltxt.py
@@ -0,0 +1,169 @@
+#!/usr/bin/env python
+##########################################################################
+#
+# Copyright 2010 VMware, Inc.
+# 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 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 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.
+#
+##########################################################################/
+
+
+import sys
+import re
+import optparse
+
+
+def stderr(x):
+    sys.stderr.write(str(x) + '\n')
+
+
+class Parser:
+
+    def __init__(self, stream):
+        pass
+
+
+class LineParser:
+    """Base class for parsers that read line-based formats."""
+
+    def __init__(self, stream):
+        self._stream = stream
+        self._line = None
+        self._eof = False
+        # read lookahead
+        self.readline()
+    
+    def parse(self):
+        raise NotImplementedError
+
+    def readline(self):
+        line = self._stream.readline()
+        if not line:
+            self._line = ''
+            self._eof = True
+        self._line = line.rstrip('\r\n')
+
+    def lookahead(self):
+        assert self._line is not None
+        return self._line
+
+    def consume(self):
+        assert self._line is not None
+        line = self._line
+        self.readline()
+        return line
+
+    def eof(self):
+        assert self._line is not None
+        return self._eof
+    
+    def skip_whitespace(self):
+        while not self.eof() and self.match_whitespace() or self.match_comment():
+            self.consume()
+
+    def match_whitespace(self):
+        line = self.lookahead()
+        return not line.strip()
+
+    def match_comment(self):
+        return False
+
+
+class TxtParser(LineParser):
+
+    property_re = re.compile(r'^\w+:')
+    prototype_re = re.compile(r'^(\w+)\((.*)\)$')
+
+    def __init__(self, stream, prefix=''):
+        LineParser.__init__(self, stream)
+        self.prefix = prefix
+
+    def parse(self):
+        line = self.consume()
+        while not line.startswith("New Procedures and Functions"):
+            line = self.consume()
+        self.parse_procs()
+
+    def parse_procs(self):
+        lines = []
+        while True:
+            line = self.consume()
+            if not line.strip():
+                continue
+            if not line.startswith(' '):
+                break
+            lines.append(line.strip())
+            if line.endswith(';'):
+                self.parse_proc(' '.join(lines))
+                lines = []
+
+    token_re = re.compile(r'(\w+|\s+|.)')
+    get_function_re = re.compile(r'^Get[A-Z]\w+')
+
+    def parse_proc(self, prototype):
+        #print prototype
+        tokens = self.token_re.split(prototype)
+        self.tokens = [token for token in tokens if token.strip()]
+        #print self.tokens
+
+        ret = self.parse_type()
+
+        name = self.tokens.pop(0)
+        extra = ''
+        if self.get_function_re.match(name):
+            extra += ', sideeffects=False'
+        name = self.prefix + name
+
+        assert self.tokens.pop(0) == '('
+        args = []
+        while self.tokens[0] != ')':
+            arg = self.parse_arg()
+            args.append(arg)
+            if self.tokens[0] == ',':
+                self.tokens.pop(0)
+        print '    GlFunction(%s, "%s", [%s]%s),' % (ret, name, ', '.join(args), extra)
+
+    def parse_arg(self):
+        type = self.parse_type()
+        name = self.tokens.pop(0)
+        return '(%s, "%s")' % (type, name)
+
+    def parse_type(self):
+        token = self.tokens.pop(0)
+        if token == 'const':
+            return 'Const(%s)' % self.parse_type()
+        if token == 'void':
+            type = 'Void'
+        else:
+            type = 'GL' + token
+        while self.tokens[0] == '*':
+            type = 'OpaquePointer(%s)' % type
+            self.tokens.pop(0)
+        return type
+
+
+def main():
+    for arg in sys.argv[1:]:
+        parser = TxtParser(open(arg, 'rt'), prefix='gl')
+        parser.parse()
+    
+
+if __name__ == '__main__':
+    main()