mirror of
https://github.com/open62541/open62541.git
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311 lines
11 KiB
Python
311 lines
11 KiB
Python
#!/usr/bin/env/python
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# -*- coding: utf-8 -*-
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###
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### Authors:
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### - Chris Iatrou (ichrispa@core-vector.net)
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### - Julius Pfrommer
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### - Stefan Profanter (profanter@fortiss.org)
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###
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### This program was created for educational purposes and has been
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### contributed to the open62541 project by the author. All licensing
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### terms for this source is inherited by the terms and conditions
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### specified for by the open62541 project (see the projects readme
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### file for more information on the LGPL terms and restrictions).
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###
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### This program is not meant to be used in a production environment. The
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### author is not liable for any complications arising due to the use of
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### this program.
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###
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from __future__ import print_function
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import string
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from os.path import basename
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import logging
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import codecs
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import os
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try:
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from StringIO import StringIO
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except ImportError:
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from io import StringIO
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logger = logging.getLogger(__name__)
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from nodes import *
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from nodeset import *
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from backend_open62541_nodes import generateNodeCode_begin, generateNodeCode_finish, generateReferenceCode
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# Kahn's algorithm: https://algocoding.wordpress.com/2015/04/05/topological-sorting-python/
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def sortNodes(nodeset):
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# Ensure that every reference has an inverse reference in the target
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for u in nodeset.nodes.values():
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for ref in u.references:
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back = Reference(ref.target, ref.referenceType, ref.source, not ref.isForward)
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nodeset.nodes[ref.target].references.add(back) # ref set does not make a duplicate entry
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# reverse hastypedefinition references to treat only forward references
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hasTypeDef = NodeId("ns=0;i=40")
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for u in nodeset.nodes.values():
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for ref in u.references:
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if ref.referenceType == hasTypeDef:
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ref.isForward = not ref.isForward
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# Only hierarchical types...
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relevant_refs = nodeset.getRelevantOrderingReferences()
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# determine in-degree of unfulfilled references
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L = [node for node in nodeset.nodes.values() if node.hidden] # ordered list of nodes
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R = {node.id: node for node in nodeset.nodes.values() if not node.hidden} # remaining nodes
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in_degree = {id: 0 for id in R.keys()}
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for u in R.values(): # for each node
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for ref in u.references:
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if not ref.referenceType in relevant_refs:
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continue
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if nodeset.nodes[ref.target].hidden:
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continue
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if ref.isForward:
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continue
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in_degree[u.id] += 1
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# Print ReferenceType and DataType nodes first. They may be required even
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# though there is no reference to them. For example if the referencetype is
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# used in a reference, it must exist. A Variable node may point to a
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# DataTypeNode in the datatype attribute and not via an explicit reference.
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Q = {node for node in R.values() if in_degree[node.id] == 0 and
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(isinstance(node, ReferenceTypeNode) or isinstance(node, DataTypeNode))}
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while Q:
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u = Q.pop() # choose node of zero in-degree and 'remove' it from graph
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L.append(u)
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del R[u.id]
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for ref in u.references:
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if not ref.referenceType in relevant_refs:
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continue
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if nodeset.nodes[ref.target].hidden:
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continue
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if not ref.isForward:
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continue
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in_degree[ref.target] -= 1
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if in_degree[ref.target] == 0:
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Q.add(R[ref.target])
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# Order the remaining nodes
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Q = {node for node in R.values() if in_degree[node.id] == 0}
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while Q:
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u = Q.pop() # choose node of zero in-degree and 'remove' it from graph
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L.append(u)
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del R[u.id]
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for ref in u.references:
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if not ref.referenceType in relevant_refs:
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continue
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if nodeset.nodes[ref.target].hidden:
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continue
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if not ref.isForward:
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continue
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in_degree[ref.target] -= 1
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if in_degree[ref.target] == 0:
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Q.add(R[ref.target])
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# reverse hastype references
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for u in nodeset.nodes.values():
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for ref in u.references:
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if ref.referenceType == hasTypeDef:
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ref.isForward = not ref.isForward
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if len(L) != len(nodeset.nodes.values()):
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print(len(L))
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stillOpen = ""
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for id in in_degree:
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if in_degree[id] == 0:
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continue
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node = nodeset.nodes[id]
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stillOpen += node.browseName.name + "/" + str(node.id) + " = " + str(in_degree[id]) + \
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" " + str(node.references) + "\r\n"
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raise Exception("Node graph is circular on the specified references. Still open nodes:\r\n" + stillOpen)
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return L
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###################
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# Generate C Code #
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###################
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def generateOpen62541Code(nodeset, outfilename, generate_ns0=False, internal_headers=False, typesArray=[], encode_binary_size=32000):
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outfilebase = basename(outfilename)
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# Printing functions
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outfileh = codecs.open(outfilename + ".h", r"w+", encoding='utf-8')
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outfilec = StringIO()
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def writeh(line):
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print(unicode(line), end='\n', file=outfileh)
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def writec(line):
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print(unicode(line), end='\n', file=outfilec)
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additionalHeaders = ""
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if len(typesArray) > 0:
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for arr in set(typesArray):
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if arr == "UA_TYPES":
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continue
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additionalHeaders += """#include "%s_generated.h"\n""" % arr.lower()
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# Print the preamble of the generated code
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writeh("""/* WARNING: This is a generated file.
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* Any manual changes will be overwritten. */
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#ifndef %s_H_
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#define %s_H_
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""" % (outfilebase.upper(), outfilebase.upper()))
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if internal_headers:
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writeh("""
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#ifdef UA_NO_AMALGAMATION
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# include "ua_server.h"
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# include "ua_types_encoding_binary.h"
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#else
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# include "open62541.h"
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/* The following declarations are in the open62541.c file so here's needed when compiling nodesets externally */
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# ifndef UA_Nodestore_remove //this definition is needed to hide this code in the amalgamated .c file
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typedef UA_StatusCode (*UA_exchangeEncodeBuffer)(void *handle, UA_Byte **bufPos,
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const UA_Byte **bufEnd);
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UA_StatusCode
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UA_encodeBinary(const void *src, const UA_DataType *type,
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UA_Byte **bufPos, const UA_Byte **bufEnd,
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UA_exchangeEncodeBuffer exchangeCallback,
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void *exchangeHandle) UA_FUNC_ATTR_WARN_UNUSED_RESULT;
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UA_StatusCode
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UA_decodeBinary(const UA_ByteString *src, size_t *offset, void *dst,
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const UA_DataType *type, size_t customTypesSize,
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const UA_DataType *customTypes) UA_FUNC_ATTR_WARN_UNUSED_RESULT;
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size_t
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UA_calcSizeBinary(void *p, const UA_DataType *type);
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const UA_DataType *
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UA_findDataTypeByBinary(const UA_NodeId *typeId);
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# endif // UA_Nodestore_remove
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#endif
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%s
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""" % (additionalHeaders))
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else:
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writeh("""
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#include "open62541.h"
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""")
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writeh("""
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_UA_BEGIN_DECLS
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extern UA_StatusCode %s(UA_Server *server);
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_UA_END_DECLS
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#endif /* %s_H_ */""" % \
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(outfilebase, outfilebase.upper()))
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writec("""/* WARNING: This is a generated file.
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* Any manual changes will be overwritten. */
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#include "%s.h"
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""" % (outfilebase))
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# Loop over the sorted nodes
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logger.info("Reordering nodes for minimal dependencies during printing")
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sorted_nodes = sortNodes(nodeset)
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logger.info("Writing code for nodes and references")
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functionNumber = 0
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parentreftypes = getSubTypesOf(nodeset, nodeset.getNodeByBrowseName("HierarchicalReferences"))
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parentreftypes = list(map(lambda x: x.id, parentreftypes))
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printed_ids = set()
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for node in sorted_nodes:
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printed_ids.add(node.id)
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parentref = node.popParentRef(parentreftypes)
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if not node.hidden:
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writec("\n/* " + str(node.displayName) + " - " + str(node.id) + " */")
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code_global = []
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code = generateNodeCode_begin(node, nodeset, generate_ns0, parentref, encode_binary_size, code_global)
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if code is None:
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writec("/* Ignored. No parent */")
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nodeset.hide_node(node.id)
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continue
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else:
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if len(code_global) > 0:
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writec("\n".join(code_global))
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writec("\n")
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writec("\nstatic UA_StatusCode function_" + outfilebase + "_" + str(functionNumber) + "_begin(UA_Server *server, UA_UInt16* ns) {")
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if isinstance(node, MethodNode):
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writec("#ifdef UA_ENABLE_METHODCALLS")
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writec(code)
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# Print inverse references leading to this node
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for ref in node.references:
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if ref.target not in printed_ids:
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continue
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if node.hidden and nodeset.nodes[ref.target].hidden:
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continue
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writec(generateReferenceCode(ref))
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if node.hidden:
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continue
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writec("return retVal;")
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if isinstance(node, MethodNode):
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writec("#else")
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writec("return UA_STATUSCODE_GOOD;")
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writec("#endif /* UA_ENABLE_METHODCALLS */")
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writec("}");
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writec("\nstatic UA_StatusCode function_" + outfilebase + "_" + str(functionNumber) + "_finish(UA_Server *server, UA_UInt16* ns) {")
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if isinstance(node, MethodNode):
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writec("#ifdef UA_ENABLE_METHODCALLS")
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writec("return " + generateNodeCode_finish(node))
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if isinstance(node, MethodNode):
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writec("#else")
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writec("return UA_STATUSCODE_GOOD;")
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writec("#endif /* UA_ENABLE_METHODCALLS */")
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writec("}");
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functionNumber = functionNumber + 1
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writec("""
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UA_StatusCode %s(UA_Server *server) {
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UA_StatusCode retVal = UA_STATUSCODE_GOOD;""" % (outfilebase))
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# Generate namespaces (don't worry about duplicates)
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writec("/* Use namespace ids generated by the server */")
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writec("UA_UInt16 ns[" + str(len(nodeset.namespaces)) + "];")
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for i, nsid in enumerate(nodeset.namespaces):
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nsid = nsid.replace("\"", "\\\"")
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writec("ns[" + str(i) + "] = UA_Server_addNamespace(server, \"" + nsid + "\");")
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for i in range(0, functionNumber):
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writec("retVal |= function_" + outfilebase + "_" + str(i) + "_begin(server, ns);")
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for i in reversed(range(0, functionNumber)):
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writec("retVal |= function_" + outfilebase + "_" + str(i) + "_finish(server, ns);")
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writec("return retVal;\n}")
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outfileh.flush()
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os.fsync(outfileh)
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outfileh.close()
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fullCode = outfilec.getvalue()
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outfilec.close()
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outfilec = codecs.open(outfilename + ".c", r"w+", encoding='utf-8')
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outfilec.write(fullCode)
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outfilec.flush()
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os.fsync(outfilec)
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outfilec.close()
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