543 lines
19 KiB
Python
543 lines
19 KiB
Python
#!/usr/bin/python3
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#
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# Copyright (c) 2016-2018 The Khronos Group Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Utility functions for automatic ref page generation
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import io,os,re,sys
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# global errFile, warnFile, diagFile
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errFile = sys.stderr
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warnFile = sys.stdout
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diagFile = None
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logSourcefile = None
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logProcname = None
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logLine = None
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# Remove \' escape sequences in a string (refpage description)
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def unescapeQuotes(str):
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return str.replace('\\\'', '\'')
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def write(*args, **kwargs ):
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file = kwargs.pop('file',sys.stdout)
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end = kwargs.pop('end','\n')
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file.write(' '.join([str(arg) for arg in args]))
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file.write(end)
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# Metadata which may be printed (if not None) for diagnostic messages
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def setLogSourcefile(filename):
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global logSourcefile
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logSourcefile = filename
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def setLogProcname(procname):
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global logProcname
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logProcname = procname
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def setLogLine(line):
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global logLine
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logLine = line
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# Generate prefix for a diagnostic line using metadata and severity
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def logHeader(severity):
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global logSourcefile, logProcname, logLine
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msg = severity + ': '
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if logProcname:
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msg = msg + ' in ' + logProcname
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if logSourcefile:
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msg = msg + ' for ' + logSourcefile
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if logLine:
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msg = msg + ' line ' + str(logLine)
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return msg + ' '
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# Set the file handle to log either or both warnings and diagnostics to.
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# setDiag and setWarn are True if the corresponding handle is to be set.
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# filename is None for no logging, '-' for stdout, or a pathname.
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def setLogFile(setDiag, setWarn, filename):
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global diagFile, warnFile
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if filename == None:
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return
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elif filename == '-':
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fp = sys.stdout
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else:
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fp = open(filename, 'w', encoding='utf-8')
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if setDiag:
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diagFile = fp
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if setWarn:
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warnFile = fp
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def logDiag(*args, **kwargs):
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file = kwargs.pop('file', diagFile)
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end = kwargs.pop('end','\n')
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if file != None:
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file.write(logHeader('DIAG') + ' '.join([str(arg) for arg in args]))
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file.write(end)
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def logWarn(*args, **kwargs):
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file = kwargs.pop('file', warnFile)
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end = kwargs.pop('end','\n')
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if file != None:
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file.write(logHeader('WARN') + ' '.join([str(arg) for arg in args]))
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file.write(end)
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def logErr(*args, **kwargs):
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file = kwargs.pop('file', errFile)
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end = kwargs.pop('end','\n')
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strfile = io.StringIO()
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strfile.write(logHeader('ERROR') + ' '.join([str(arg) for arg in args]))
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strfile.write(end)
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if file != None:
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file.write(strfile.getvalue())
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raise UserWarning(strfile.getvalue())
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# Return True if s is nothing but white space, False otherwise
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def isempty(s):
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return len(''.join(s.split())) == 0
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# pageInfo - information about a ref page relative to the file it's
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# extracted from.
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#
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# extractPage - True if page should be extracted
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# Warning - string warning if page is suboptimal or can't be generated
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# embed - False or the name of the ref page this include is imbedded within
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#
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# type - 'structs', 'protos', 'funcpointers', 'flags', 'enums'
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# name - struct/proto/enumerant/etc. name
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# desc - short description of ref page
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# begin - index of first line of the page (heuristic or // refBegin)
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# include - index of include:: line defining the page
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# param - index of first line of parameter/member definitions
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# body - index of first line of body text
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# validity - index of validity include
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# end - index of last line of the page (heuristic validity include, or // refEnd)
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# refs - cross-references on // refEnd line, if supplied
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class pageInfo:
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def __init__(self):
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self.extractPage = True
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self.Warning = None
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self.embed = False
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self.type = None
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self.name = None
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self.desc = None
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self.begin = None
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self.include = None
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self.param = None
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self.body = None
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self.validity = None
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self.end = None
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self.refs = ''
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# Print a single field of a pageInfo struct, possibly None
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# desc - string description of field
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# line - field value or None
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# file - indexed by line
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def printPageInfoField(desc, line, file):
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if line != None:
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logDiag(desc + ':', line + 1, '\t-> ', file[line], end='')
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else:
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logDiag(desc + ':', line)
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# Print out fields of a pageInfo struct
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# pi - pageInfo
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# file - indexed by pageInfo
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def printPageInfo(pi, file):
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logDiag('TYPE: ', pi.type)
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logDiag('NAME: ', pi.name)
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logDiag('WARNING:', pi.Warning)
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logDiag('EXTRACT:', pi.extractPage)
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logDiag('EMBED: ', pi.embed)
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logDiag('DESC: ', pi.desc)
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printPageInfoField('BEGIN ', pi.begin, file)
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printPageInfoField('INCLUDE ', pi.include, file)
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printPageInfoField('PARAM ', pi.param, file)
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printPageInfoField('BODY ', pi.body, file)
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printPageInfoField('VALIDITY', pi.validity, file)
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printPageInfoField('END ', pi.end, file)
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logDiag('REFS: "' + pi.refs + '"')
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# Go back one paragraph from the specified line and return the line number
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# of the first line of that paragraph.
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#
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# Paragraphs are delimited by blank lines. It is assumed that the
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# current line is the first line of a paragraph.
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# file is an array of strings
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# line is the starting point (zero-based)
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def prevPara(file, line):
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# Skip over current paragraph
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while (line >= 0 and not isempty(file[line])):
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line = line - 1
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# Skip over white space
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while (line >= 0 and isempty(file[line])):
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line = line - 1
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# Skip to first line of previous paragraph
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while (line >= 1 and not isempty(file[line-1])):
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line = line - 1
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return line
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# Go forward one paragraph from the specified line and return the line
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# number of the first line of that paragraph.
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#
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# Paragraphs are delimited by blank lines. It is assumed that the
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# current line is standalone (which is bogus)
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# file is an array of strings
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# line is the starting point (zero-based)
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def nextPara(file, line):
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maxLine = len(file) - 1
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# Skip over current paragraph
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while (line != maxLine and not isempty(file[line])):
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line = line + 1
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# Skip over white space
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while (line != maxLine and isempty(file[line])):
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line = line + 1
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return line
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# Return (creating if needed) the pageInfo entry in pageMap for name
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def lookupPage(pageMap, name):
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if not name in pageMap.keys():
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pi = pageInfo()
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pi.name = name
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pageMap[name] = pi
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else:
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pi = pageMap[name]
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return pi
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# Load a file into a list of strings. Return the list or None on failure
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def loadFile(filename):
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try:
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fp = open(filename, 'r', encoding='utf-8')
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except:
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logWarn('Cannot open file', filename, ':', sys.exc_info()[0])
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return None
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file = fp.readlines()
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fp.close()
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return file
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# Clamp a line number to be in the range [minline,maxline].
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# If the line number is None, just return it.
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# If minline is None, don't clamp to that value.
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def clampToBlock(line, minline, maxline):
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if line == None:
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return line
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elif minline and line < minline:
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return minline
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elif line > maxline:
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return maxline
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else:
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return line
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# Fill in missing fields in pageInfo structures, to the extent they can be
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# inferred.
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# pageMap - dictionary of pageInfo structures
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# specFile - filename
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# file - list of strings making up the file, indexed by pageInfo
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def fixupRefs(pageMap, specFile, file):
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# All potential ref pages are now in pageMap. Process them to
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# identify actual page start/end/description boundaries, if
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# not already determined from the text.
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for name in sorted(pageMap.keys()):
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pi = pageMap[name]
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# # If nothing is found but an include line with no begin, validity,
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# # or end, this is not intended as a ref page (yet). Set the begin
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# # line to the include line, so autogeneration can at least
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# # pull the include out, but mark it not to be extracted.
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# # Examples include the host sync table includes in
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# # chapters/fundamentals.txt and the table of Vk*Flag types in
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# # appendices/boilerplate.txt.
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# if pi.begin == None and pi.validity == None and pi.end == None:
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# pi.begin = pi.include
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# pi.extractPage = False
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# pi.Warning = 'No begin, validity, or end lines identified'
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# continue
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# Using open block delimiters, ref pages must *always* have a
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# defined begin and end. If either is undefined, that's fatal.
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if pi.begin == None:
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pi.extractPage = False
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pi.Warning = 'Can\'t identify begin of ref page open block'
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continue
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if pi.end == None:
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pi.extractPage = False
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pi.Warning = 'Can\'t identify end of ref page open block'
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continue
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# If there's no description of the page, infer one from the type
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if pi.desc == None:
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if pi.type != None:
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# pi.desc = pi.type[0:len(pi.type)-1] + ' (no short description available)'
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pi.Warning = 'No short description available; could infer from the type and name'
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True
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else:
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pi.extractPage = False
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pi.Warning = 'No short description available, cannot infer from the type'
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continue
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# Try to determine where the parameter and body sections of the page
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# begin. funcpointer, proto, and struct pages infer the location of
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# the parameter and body sections. Other pages infer the location of
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# the body, but have no parameter sections.
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if pi.include != None:
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if pi.type in ['funcpointers', 'protos', 'structs']:
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pi.param = nextPara(file, pi.include)
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if pi.body == None:
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pi.body = nextPara(file, pi.param)
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else:
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if pi.body == None:
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pi.body = nextPara(file, pi.include)
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else:
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pi.Warning = 'Page does not have an API definition include::'
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# It's possible for the inferred param and body lines to run past
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# the end of block, if, for example, there is no parameter section.
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pi.param = clampToBlock(pi.param, pi.include, pi.end)
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pi.body = clampToBlock(pi.body, pi.param, pi.end)
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# We can get to this point with .include, .param, and .validity
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# all being None, indicating those sections weren't found.
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logDiag('fixupRefs: after processing,', pi.name, 'looks like:')
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printPageInfo(pi, file)
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# Now that all the valid pages have been found, try to make some
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# inferences about invalid pages.
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#
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# If a reference without a .end is entirely inside a valid reference,
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# then it's intentionally embedded - may want to create an indirect
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# page that links into the embedding page. This is done by a very
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# inefficient double loop, but the loop depth is small.
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for name in sorted(pageMap.keys()):
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pi = pageMap[name]
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if pi.end == None:
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for embedName in sorted(pageMap.keys()):
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logDiag('fixupRefs: comparing', pi.name, 'to', embedName)
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embed = pageMap[embedName]
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# Don't check embeddings which are themselves invalid
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if not embed.extractPage:
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logDiag('Skipping check for embedding in:', embed.name)
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continue
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if embed.begin == None or embed.end == None:
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logDiag('fixupRefs:', name + ':',
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'can\'t compare to unanchored ref:', embed.name,
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'in', specFile, 'at line', pi.include )
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printPageInfo(pi, file)
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printPageInfo(embed, file)
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# If an embed is found, change the error to a warning
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elif (pi.include != None and pi.include >= embed.begin and
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pi.include <= embed.end):
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logDiag('fixupRefs: Found embed for:', name,
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'inside:', embedName,
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'in', specFile, 'at line', pi.include )
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pi.embed = embed.name
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pi.Warning = 'Embedded in definition for ' + embed.name
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break
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else:
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logDiag('fixupRefs: No embed match for:', name,
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'inside:', embedName, 'in', specFile,
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'at line', pi.include)
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# Patterns used to recognize interesting lines in an asciidoc source file.
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# These patterns are only compiled once.
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includePat = re.compile('^include::(\.\./)+api/+(?P<type>\w+)/(?P<name>\w+).txt\[\]')
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validPat = re.compile('^include::(\.\./)+validity/(?P<type>\w+)/(?P<name>\w+).txt\[\]')
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beginPat = re.compile('^\[open,(?P<attribs>refpage=.*)\]')
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# attribute key/value pairs of an open block
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attribStr = "([a-z]+)='([^'\\\\]*(?:\\\\.[^'\\\\]*)*)'"
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attribPat = re.compile(attribStr)
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bodyPat = re.compile('^// *refBody')
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# Identify reference pages in a list of strings, returning a dictionary of
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# pageInfo entries for each one found, or None on failure.
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def findRefs(file, filename):
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setLogSourcefile(filename)
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setLogProcname('findRefs')
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# To reliably detect the open blocks around reference pages, we must
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# first detect the '[open,refpage=...]' markup delimiting the block;
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# skip past the '--' block delimiter on the next line; and identify the
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# '--' block delimiter closing the page.
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# This can't be done solely with pattern matching, and requires state to
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# track 'inside/outside block'.
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# When looking for open blocks, possible states are:
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# 'outside' - outside a block
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# 'start' - have found the '[open...]' line
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# 'inside' - have found the following '--' line
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openBlockState = 'outside'
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# This is a dictionary of interesting line numbers and strings related
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# to a Vulkan API name
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pageMap = {}
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numLines = len(file)
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line = 0
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# Track the pageInfo object corresponding to the current open block
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pi = None
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while (line < numLines):
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setLogLine(line)
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# Only one of the patterns can possibly match. Add it to
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# the dictionary for that name.
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# [open,refpage=...] starting a refpage block
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matches = beginPat.search(file[line])
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if matches != None:
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logDiag('Matched open block pattern')
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attribs = matches.group('attribs')
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openBlockState = 'start'
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# Parse the block attributes
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matches = attribPat.findall(attribs)
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# Extract each attribute
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name = None
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desc = None
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type = None
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xrefs = None
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for (key,value) in matches:
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logDiag('got attribute', key, '=', value)
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if key == 'refpage':
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name = value
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elif key == 'desc':
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desc = unescapeQuotes(value)
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elif key == 'type':
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type = value
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elif key == 'xrefs':
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xrefs = value
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else:
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logWarn('unknown open block attribute:', key)
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if name == None or desc == None or type == None:
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logWarn('missing one or more required open block attributes:'
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'refpage, desc, or type')
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# Leave pi == None so open block delimiters are ignored
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else:
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pi = lookupPage(pageMap, name)
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pi.desc = desc
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# Must match later type definitions in interface/validity includes
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pi.type = type
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if xrefs:
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pi.refs = xrefs
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logDiag('open block for', name, 'added DESC =', desc,
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'TYPE =', type, 'XREFS =', xrefs)
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line = line + 1
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continue
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# '--' starting or ending and open block
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if file[line].rstrip() == '--':
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if openBlockState == 'outside':
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# Only refpage open blocks should use -- delimiters
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logWarn('Unexpected double-dash block delimiters')
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elif openBlockState == 'start':
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# -- delimiter following [open,refpage=...]
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openBlockState = 'inside'
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if pi == None:
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logWarn('no pageInfo available for opening -- delimiter')
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else:
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pi.begin = line + 1
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logDiag('opening -- delimiter: added BEGIN =', pi.begin)
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elif openBlockState == 'inside':
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# -- delimiter ending an open block
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if pi == None:
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logWarn('no pageInfo available for closing -- delimiter')
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else:
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pi.end = line - 1
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logDiag('closing -- delimiter: added END =', pi.end)
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openBlockState = 'outside'
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pi = None
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else:
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logWarn('unknown openBlockState:', openBlockState)
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line = line + 1
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continue
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matches = validPat.search(file[line])
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if matches != None:
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logDiag('Matched validity pattern')
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type = matches.group('type')
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name = matches.group('name')
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if pi != None:
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if pi.type and type != pi.type:
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logWarn('ERROR: pageMap[' + name + '] type:',
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pi.type, 'does not match type:', type)
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pi.type = type
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pi.validity = line
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logDiag('added TYPE =', pi.type, 'VALIDITY =', pi.validity)
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else:
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logWarn('validity include:: line NOT inside block')
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line = line + 1
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continue
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matches = includePat.search(file[line])
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if matches != None:
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logDiag('Matched include pattern')
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type = matches.group('type')
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name = matches.group('name')
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if pi != None:
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if pi.type and type != pi.type:
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logWarn('ERROR: pageMap[' + name + '] type:',
|
|
pi.type, 'does not match type:', type)
|
|
pi.type = type
|
|
pi.include = line
|
|
logDiag('added TYPE =', pi.type, 'INCLUDE =', pi.include)
|
|
else:
|
|
logWarn('interface include:: line NOT inside block')
|
|
|
|
line = line + 1
|
|
continue
|
|
|
|
matches = bodyPat.search(file[line])
|
|
if matches != None:
|
|
logDiag('Matched // refBody pattern')
|
|
if pi != None:
|
|
pi.body = line
|
|
logDiag('added BODY =', pi.body)
|
|
else:
|
|
logWarn('// refBody line NOT inside block')
|
|
|
|
line = line + 1
|
|
continue
|
|
|
|
line = line + 1
|
|
continue
|
|
|
|
if pi != None:
|
|
logErr('Unclosed open block at EOF!')
|
|
|
|
setLogSourcefile(None)
|
|
setLogProcname(None)
|
|
setLogLine(None)
|
|
|
|
return pageMap
|
|
|