684 lines
25 KiB
Python
Executable File
684 lines
25 KiB
Python
Executable File
import os, sys, re
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opencv_hdr_list = [
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"../core/include/opencv2/core/core.hpp",
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#"../core/include/opencv2/core/core_c.h",
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"../ml/include/opencv2/ml/ml.hpp",
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"../imgproc/include/opencv2/imgproc/imgproc.hpp",
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#"../imgproc/include/opencv2/imgproc/imgproc_c.h",
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"../calib3d/include/opencv2/calib3d/calib3d.hpp",
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"../features2d/include/opencv2/features2d/features2d.hpp",
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"../video/include/opencv2/video/tracking.hpp",
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"../video/include/opencv2/video/background_segm.hpp",
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"../objdetect/include/opencv2/objdetect/objdetect.hpp",
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"../highgui/include/opencv2/highgui/highgui.hpp",
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#"../highgui/include/opencv2/highgui/highgui_c.h",
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"opencv_api_extra.hpp",
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]
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"""
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Each declaration is [funcname, return_value_type /* in C, not in Python */, <list_of_modifiers>, <list_of_arguments>],
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where each element of <list_of_arguments> is 4-element list itself:
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[argtype, argname, default_value /* or "" if none */, <list_of_modifiers>]
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where the list of modifiers is yet another nested list of strings
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(currently recognized are "/O" for output argument, "/S" for static (i.e. class) methods
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and "/A value" for the plain C arrays with counters)
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"""
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class CppHeaderParser(object):
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def __init__(self):
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self.BLOCK_TYPE = 0
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self.BLOCK_NAME = 1
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self.PROCESS_FLAG = 2
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self.PUBLIC_SECTION = 3
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self.CLASS_DECL = 4
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def batch_replace(self, s, pairs):
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for before, after in pairs:
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s = s.replace(before, after)
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return s
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def get_macro_arg(self, arg_str, npos):
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npos2 = npos3 = arg_str.find("(", npos)
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if npos2 < 0:
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print "Error: no arguments for the macro at %d" % (self.lineno,)
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sys.exit(-1)
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balance = 1
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while 1:
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t, npos3 = self.find_next_token(arg_str, ['(', ')'], npos3+1)
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if npos3 < 0:
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print "Error: no matching ')' in the macro call at %d" % (self.lineno,)
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sys.exit(-1)
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if t == '(':
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balance += 1
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if t == ')':
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balance -= 1
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if balance == 0:
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break
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return arg_str[npos2+1:npos3].strip(), npos3
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def parse_arg(self, arg_str, argno):
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"""
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Parses <arg_type> [arg_name]
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Returns arg_type, arg_name, modlist, argno, where
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modlist is the list of wrapper-related modifiers (such as "output argument", "has counter", ...)
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and argno is the new index of an anonymous argument.
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That is, if no arg_str is just an argument type without argument name, the argument name is set to
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"arg" + str(argno), and then argno is incremented.
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"""
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modlist = []
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# pass 0: extracts the modifiers
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if "CV_OUT" in arg_str:
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modlist.append("/O")
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arg_str = arg_str.replace("CV_OUT", "")
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if "CV_IN_OUT" in arg_str:
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modlist.append("/IO")
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arg_str = arg_str.replace("CV_IN_OUT", "")
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isarray = False
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npos = arg_str.find("CV_CARRAY")
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if npos >= 0:
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isarray = True
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macro_arg, npos3 = self.get_macro_arg(arg_str, npos)
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modlist.append("/A " + macro_arg)
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arg_str = arg_str[:npos] + arg_str[npos3+1:]
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npos = arg_str.find("CV_CUSTOM_CARRAY")
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if npos >= 0:
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isarray = True
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macro_arg, npos3 = self.get_macro_arg(arg_str, npos)
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modlist.append("/CA " + macro_arg)
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arg_str = arg_str[:npos] + arg_str[npos3+1:]
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arg_str = arg_str.strip()
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word_start = 0
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word_list = []
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npos = -1
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#print self.lineno, ":\t", arg_str
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# pass 1: split argument type into tokens
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while 1:
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npos += 1
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t, npos = self.find_next_token(arg_str, [" ", "&", "*", "<", ">", ","], npos)
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w = arg_str[word_start:npos].strip()
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if w == "operator":
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word_list.append("operator " + arg_str[npos:].strip())
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break
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if w not in ["", "const"]:
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word_list.append(w)
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if t not in ["", " ", "&"]:
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word_list.append(t)
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if not t:
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break
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word_start = npos+1
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npos = word_start - 1
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arg_type = ""
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arg_name = ""
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angle_stack = []
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#print self.lineno, ":\t", word_list
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# pass 2: decrypt the list
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wi = -1
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prev_w = ""
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for w in word_list:
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wi += 1
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if w == "*":
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if prev_w == "char" and not isarray:
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arg_type = arg_type[:-len("char")] + "c_string"
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else:
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arg_type += w
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continue
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elif w == "<":
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arg_type += "_"
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angle_stack.append(0)
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elif w == "," or w == '>':
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if not angle_stack:
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print "Error at %d: argument contains ',' or '>' not within template arguments" % (self.lineno,)
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sys.exit(-1)
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if w == ",":
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arg_type += "_and_"
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elif w == ">":
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if angle_stack[0] == 0:
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print "Error at %d: template has no arguments" % (self.lineno,)
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sys.exit(-1)
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if angle_stack[0] > 1:
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arg_type += "_end_"
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angle_stack[-1:] = []
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elif angle_stack:
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arg_type += w
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angle_stack[-1] += 1
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elif arg_type and arg_type != "~":
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arg_name = " ".join(word_list[wi:])
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break
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else:
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arg_type += w
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prev_w = w
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counter_str = ""
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add_star = False
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if ("[" in arg_name) and not ("operator" in arg_str):
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#print arg_str
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p1 = arg_name.find("[")
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p2 = arg_name.find("]",p1+1)
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if p2 < 0:
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print "Error at %d: no closing ]" % (self.lineno,)
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sys.exit(-1)
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counter_str = arg_name[p1+1:p2].strip()
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if counter_str == "":
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counter_str = "?"
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if not isarray:
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modlist.append("/A " + counter_str.strip())
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arg_name = arg_name[:p1]
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add_star = True
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if not arg_name:
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if arg_type.startswith("operator"):
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arg_type, arg_name = "", arg_type
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else:
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arg_name = "arg" + str(argno)
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argno += 1
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while arg_type.endswith("_end_"):
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arg_type = arg_type[:-len("_end_")]
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if add_star:
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arg_type += "*"
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arg_type = self.batch_replace(arg_type, [("std::", ""), ("cv::", "")])
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return arg_type, arg_name, modlist, argno
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def parse_enum(self, decl_str):
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l = decl_str
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ll = l.split(",")
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prev_val = ""
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prev_val_delta = -1
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decl = []
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for pair in ll:
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pv = pair.split("=")
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if len(pv) == 1:
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prev_val_delta += 1
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val = ""
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if prev_val:
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val = prev_val + "+"
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val += str(prev_val_delta)
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else:
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prev_val_delta = 0
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prev_val = val = pv[1].strip()
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decl.append(["const " + self.get_dotted_name(pv[0].strip()), val, [], []])
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return decl
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def parse_class_decl(self, decl_str):
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"""
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Parses class/struct declaration start in the form:
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{class|struct} [CV_EXPORTS] <class_name> [: public <base_class1> [, ...]]
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Returns class_name1, <list of base_classes>
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"""
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l = decl_str
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modlist = []
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if "CV_EXPORTS_AS_MAP" in l:
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l = l.replace("CV_EXPORTS_AS_MAP", "")
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modlist.append("/Map")
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npos = l.find("CV_EXPORTS_AS")
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if npos >= 0:
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macro_arg, npos3 = self.get_macro_arg(l, npos)
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modlist.append("=" + macro_arg)
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l = l[:npos] + l[npos3+1:]
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l = self.batch_replace(l, [("CV_EXPORTS_W", ""), ("CV_EXPORTS", ""), ("public ", " "), ("::", ".")]).strip()
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ll = re.split(r'\s*[,:]?\s*', l)
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ll = [le for le in ll if le]
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classname = ll[1]
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bases = ll[2:]
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return classname, bases, modlist
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def parse_func_decl(self, decl_str):
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"""
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Parses the function or method declaration in the form:
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[([CV_EXPORTS] <rettype>) | CVAPI(rettype)]
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[~]<function_name>
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(<arg_type1> <arg_name1>[=<default_value1>] [, <arg_type2> <arg_name2>[=<default_value2>] ...])
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[const] {; | <function_body>}
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Returns the function declaration entry:
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[<function_name>, <rettype>, <the_list_of_argument_descriptions>] (see above)
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"""
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if not (("CV_EXPORTS_AS" in decl_str) or ("CV_EXPORTS_W" in decl_str) or \
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("CV_WRAP" in decl_str) or ("CV_WRAP_AS" in decl_str)):
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return []
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func_modlist = []
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npos = decl_str.find("CV_EXPORTS_AS")
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if npos >= 0:
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arg, npos3 = self.get_macro_arg(decl_str, npos)
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func_modlist.append("="+arg)
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decl_str = decl_str[:npos] + decl_str[npos3+1:]
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npos = decl_str.find("CV_WRAP_AS")
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if npos >= 0:
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arg, npos3 = self.get_macro_arg(decl_str, npos)
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func_modlist.append("="+arg)
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decl_str = decl_str[:npos] + decl_str[npos3+1:]
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# filter off some common prefixes, which are meaningless for Python wrappers.
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# note that we do not strip "static" prefix, which does matter;
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# it means class methods, not instance methods
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decl_str = self.batch_replace(decl_str, [("virtual", ""), ("static inline", ""), ("inline", ""),\
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("CV_EXPORTS_W", ""), ("CV_EXPORTS", ""), ("CV_WRAP ", " "), ("static CV_INLINE", ""), ("CV_INLINE", "")]).strip()
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static_method = False
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context = self.block_stack[-1][0]
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if decl_str.startswith("static") and (context == "class" or context == "struct"):
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decl_str = decl_str[len("static"):].lstrip()
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static_method = True
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args_begin = decl_str.find("(")
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if decl_str.startswith("CVAPI"):
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rtype_end = decl_str.find(")", args_begin+1)
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if rtype_end < 0:
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print "Error at %d. no terminating ) in CVAPI() macro: %s" % (self.lineno, decl_str)
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sys.exit(-1)
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decl_str = decl_str[args_begin+1:rtype_end] + " " + decl_str[rtype_end+1:]
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args_begin = decl_str.find("(")
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if args_begin < 0:
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print "Error at %d: no args in '%s'" % (self.lineno, decl_str)
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sys.exit(-1)
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decl_start = decl_str[:args_begin].strip()
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# handle operator () case
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if decl_start.endswith("operator"):
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args_begin = decl_str.find("(", args_begin+1)
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if args_begin < 0:
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print "Error at %d: no args in '%s'" % (self.lineno, decl_str)
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sys.exit(-1)
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decl_start = decl_str[:args_begin].strip()
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rettype, funcname, modlist, argno = self.parse_arg(decl_start, -1)
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if argno >= 0:
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classname = self.block_stack[-1][1]
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if rettype == classname or rettype == "~" + classname:
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rettype, funcname = "", rettype
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else:
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print "Error at %d. the function/method name is missing: '%s'" % (self.lineno, decl_start)
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sys.exit(-1)
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if ("::" in funcname) or funcname.startswith("~"):
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# if there is :: in function name (and this is in the header file),
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# it means, this is inline implementation of a class method.
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# Thus the function has been already declared within the class and we skip this repeated
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# declaration.
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# Also, skip the destructors, as they are always wrapped
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return []
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funcname = self.get_dotted_name(funcname)
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arg_start = args_begin+1
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npos = arg_start-1
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balance = 1
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angle_balance = 0
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# scan the argument list; handle nested parentheses
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args_decls = []
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args = []
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argno = 1
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while balance > 0:
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npos += 1
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t, npos = self.find_next_token(decl_str, ["(", ")", ",", "<", ">"], npos)
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if not t:
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print "Error: no closing ')' at %d" % (self.lineno,)
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print decl_str
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print decl_str[arg_start:]
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sys.exit(-1)
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if t == "<":
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angle_balance += 1
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if t == ">":
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angle_balance -= 1
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if t == "(":
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balance += 1
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if t == ")":
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balance -= 1
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if (t == "," and balance == 1 and angle_balance == 0) or balance == 0:
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# process next function argument
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a = decl_str[arg_start:npos].strip()
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#print "arg = ", a
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arg_start = npos+1
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if a:
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eqpos = a.find("=")
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defval = ""
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modlist = []
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if eqpos >= 0:
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defval = a[eqpos+1:].strip()
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else:
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eqpos = a.find("CV_DEFAULT")
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if eqpos >= 0:
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defval, pos3 = self.get_macro_arg(a, eqpos)
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else:
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eqpos = a.find("CV_WRAP_DEFAULT")
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if eqpos >= 0:
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defval, pos3 = self.get_macro_arg(a, eqpos)
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if defval == "NULL":
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defval = "0"
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if eqpos >= 0:
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a = a[:eqpos].strip()
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arg_type, arg_name, modlist, argno = self.parse_arg(a, argno)
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args.append([arg_type, arg_name, defval, modlist])
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npos = arg_start-1
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npos = decl_str.replace(" ", "").find("=0", npos)
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if npos >= 0:
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# skip pure virtual functions
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return []
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if static_method:
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rettype = " ".join([rettype, "/S"])
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return [funcname, rettype, func_modlist, args]
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def get_dotted_name(self, name):
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"""
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adds the dot-separated container class/namespace names to the bare function/class name, e.g. when we have
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namespace cv {
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class A {
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public:
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f(int);
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};
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}
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the function will convert "A" to "cv.A" and "f" to "cv.A.f".
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"""
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if not self.block_stack:
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return name
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n = ""
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for b in self.block_stack:
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block_type, block_name = b[self.BLOCK_TYPE], b[self.BLOCK_NAME]
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if block_type in ["file", "enum"]:
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continue
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if block_type not in ["struct", "class", "namespace"]:
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print "Error at %d: there are non-valid entries in the current block stack " % (self.lineno, self.block_stack)
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sys.exit(-1)
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if block_name:
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n += block_name + "."
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return n + name
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def parse_stmt(self, stmt, end_token):
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"""
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parses the statement (ending with ';' or '}') or a block head (ending with '{')
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The function calls parse_class_decl or parse_func_decl when necessary. It returns
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<block_type>, <block_name>, <parse_flag>, <declaration>
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where the first 3 values only make sense for blocks (i.e. code blocks, namespaces, classes, enums and such)
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"""
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stack_top = self.block_stack[-1]
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context = stack_top[self.BLOCK_TYPE]
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stmt_type = ""
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if end_token == "{":
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stmt_type = "block"
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if context == "block":
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print "Error at %d: should not call parse_stmt inside blocks" % (self.lineno,)
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sys.exit(-1)
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if context == "class" or context == "struct":
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while 1:
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colon_pos = stmt.find(":")
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if colon_pos < 0:
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break
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w = stmt[:colon_pos].strip()
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if w in ["public", "protected", "private"]:
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if w == "public":
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stack_top[self.PUBLIC_SECTION] = True
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else:
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stack_top[self.PUBLIC_SECTION] = False
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stmt = stmt[colon_pos+1:].strip()
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break
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# do not process hidden class members and template classes/functions
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if not stack_top[self.PUBLIC_SECTION] or stmt.startswith("template"):
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return stmt_type, "", False, None
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if end_token == "{":
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if stmt.startswith("class") or stmt.startswith("struct"):
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stmt_type = stmt.split()[0]
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classname, bases, modlist = self.parse_class_decl(stmt)
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decl = []
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if ("CV_EXPORTS_W" in stmt) or ("CV_EXPORTS_AS" in stmt):
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decl = [stmt_type + " " + self.get_dotted_name(classname), "", modlist, []]
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if bases:
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decl[1] = ": " + " ".join(bases)
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return stmt_type, classname, True, decl
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if stmt.startswith("enum"):
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return "enum", "", True, None
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if stmt.startswith("namespace"):
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stmt_list = stmt.split()
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return stmt_list[0], stmt_list[1], True, None
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if stmt.startswith("extern") and "\"C\"" in stmt:
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return "namespace", "", True, None
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|
|
|
if end_token == "}" and context == "enum":
|
|
decl = self.parse_enum(stmt)
|
|
return "enum", "", False, decl
|
|
|
|
if end_token == ";" and stmt.startswith("typedef"):
|
|
# TODO: handle typedef's more intelligently
|
|
return stmt_type, "", False, None
|
|
|
|
paren_pos = stmt.find("(")
|
|
if paren_pos >= 0:
|
|
# assume it's function or method declaration,
|
|
# since we filtered off the other places where '(' can normally occur:
|
|
# - code blocks
|
|
# - function pointer typedef's
|
|
decl = self.parse_func_decl(stmt)
|
|
# we return parse_flag == False to prevent the parser to look inside function/method bodies
|
|
# (except for tracking the nested blocks)
|
|
return stmt_type, "", False, decl
|
|
|
|
if (context == "struct" or context == "class") and end_token == ";" and stmt:
|
|
# looks like it's member declaration; append the members to the class declaration
|
|
class_decl = stack_top[self.CLASS_DECL]
|
|
if ("CV_PROP" in stmt) or (class_decl and ("/Map" in class_decl[2])):
|
|
var_modlist = []
|
|
if "CV_PROP_RW" in stmt:
|
|
var_modlist.append("/RW")
|
|
stmt = self.batch_replace(stmt, [("CV_PROP_RW", ""), ("CV_PROP", "")]).strip()
|
|
var_list = stmt.split(",")
|
|
var_type, var_name1, modlist, argno = self.parse_arg(var_list[0], -1)
|
|
var_list = [var_name1] + [i.strip() for i in var_list[1:]]
|
|
|
|
for v in var_list:
|
|
class_decl[3].append([var_type, v, "", var_modlist])
|
|
return stmt_type, "", False, None
|
|
|
|
# something unknown
|
|
return stmt_type, "", False, None
|
|
|
|
def find_next_token(self, s, tlist, p=0):
|
|
"""
|
|
Finds the next token from the 'tlist' in the input 's', starting from position 'p'.
|
|
Returns the first occured token and its position, or ("", len(s)) when no token is found
|
|
"""
|
|
token = ""
|
|
tpos = len(s)
|
|
for t in tlist:
|
|
pos = s.find(t, p)
|
|
if pos < 0:
|
|
continue
|
|
if pos < tpos:
|
|
tpos = pos
|
|
token = t
|
|
return token, tpos
|
|
|
|
def parse(self, hname):
|
|
"""
|
|
The main method. Parses the input file.
|
|
Returns the list of declarations (that can be print using print_decls)
|
|
"""
|
|
decls = []
|
|
f = open(hname, "rt")
|
|
linelist = list(f.readlines())
|
|
f.close()
|
|
|
|
# states:
|
|
SCAN = 0 # outside of a comment or preprocessor directive
|
|
COMMENT = 1 # inside a multi-line comment
|
|
DIRECTIVE = 2 # inside a multi-line preprocessor directive
|
|
|
|
state = SCAN
|
|
|
|
self.block_stack = [["file", hname, True, True, None]]
|
|
block_head = ""
|
|
self.lineno = 0
|
|
|
|
for l0 in linelist:
|
|
self.lineno += 1
|
|
#print self.lineno
|
|
|
|
l = l0.strip()
|
|
|
|
if state == SCAN and l.startswith("#"):
|
|
state = DIRECTIVE
|
|
# fall through to the if state == DIRECTIVE check
|
|
|
|
if state == DIRECTIVE:
|
|
if not l.endswith("\\"):
|
|
state = SCAN
|
|
continue
|
|
|
|
if state == COMMENT:
|
|
pos = l.find("*/")
|
|
if pos < 0:
|
|
continue
|
|
l = l[pos+2:]
|
|
state = SCAN
|
|
|
|
if state != SCAN:
|
|
print "Error at %d: invlid state = %d" % (self.lineno, state)
|
|
sys.exit(-1)
|
|
|
|
while 1:
|
|
token, pos = self.find_next_token(l, [";", "\"", "{", "}", "//", "/*"])
|
|
|
|
if not token:
|
|
block_head += " " + l
|
|
break
|
|
|
|
if token == "//":
|
|
block_head += " " + l[:pos]
|
|
break
|
|
|
|
if token == "/*":
|
|
block_head += " " + l[:pos]
|
|
pos = l.find("*/", pos+2)
|
|
if pos < 0:
|
|
state = COMMENT
|
|
break
|
|
l = l[pos+2:]
|
|
continue
|
|
|
|
if token == "\"":
|
|
pos2 = pos + 1
|
|
while 1:
|
|
t2, pos2 = self.find_next_token(l, ["\\", "\""], pos2)
|
|
if t2 == "":
|
|
print "Error at %d: no terminating '\"'" % (self.lineno,)
|
|
sys.exit(-1)
|
|
if t2 == "\"":
|
|
break
|
|
pos2 += 2
|
|
|
|
block_head += " " + l[:pos2+1]
|
|
l = l[pos2+1:]
|
|
continue
|
|
|
|
stmt = (block_head + " " + l[:pos]).strip()
|
|
stmt = " ".join(stmt.split()) # normalize the statement
|
|
stack_top = self.block_stack[-1]
|
|
|
|
decl = None
|
|
if stack_top[self.PROCESS_FLAG]:
|
|
# even if stack_top[PUBLIC_SECTION] is False, we still try to process the statement,
|
|
# since it can start with "public:"
|
|
stmt_type, name, parse_flag, decl = self.parse_stmt(stmt, token)
|
|
if decl:
|
|
if stmt_type == "enum":
|
|
for d in decl:
|
|
decls.append(d)
|
|
else:
|
|
decls.append(decl)
|
|
else:
|
|
stmt_type, name, parse_flag = "block", "", False
|
|
|
|
if token == "{":
|
|
if stmt_type == "class":
|
|
public_section = False
|
|
else:
|
|
public_section = True
|
|
self.block_stack.append([stmt_type, name, parse_flag, public_section, decl])
|
|
|
|
if token == "}":
|
|
if not self.block_stack:
|
|
print "Error at %d: the block stack is empty" % (self.lineno,)
|
|
self.block_stack[-1:] = []
|
|
if pos+1 < len(l) and l[pos+1] == ';':
|
|
pos += 1
|
|
|
|
block_head = ""
|
|
l = l[pos+1:]
|
|
|
|
return decls
|
|
|
|
def print_decls(self, decls):
|
|
"""
|
|
Prints the list of declarations, retrieived by the parse() method
|
|
"""
|
|
for d in decls:
|
|
print d[0], d[1], ";".join(d[2])
|
|
for a in d[3]:
|
|
print " ", a[0], a[1], a[2],
|
|
if a[3]:
|
|
print "; ".join(a[3])
|
|
else:
|
|
print
|
|
|
|
def parse_all():
|
|
parser = CppHeaderParser()
|
|
decls = []
|
|
for hname in opencv_hdr_list:
|
|
decls += parser.parse(hname)
|
|
return decls
|
|
|
|
if __name__ == '__main__':
|
|
parser = CppHeaderParser()
|
|
decls = parse_all()
|
|
if 0:
|
|
pass
|
|
elif 1:
|
|
CppHeaderParser().print_decls(decls)
|
|
print len(decls)
|
|
else:
|
|
fcounts = {}
|
|
for f in decls:
|
|
fname = f[0]
|
|
fcounts[fname] = fcounts.get(fname, []) + [f]
|
|
items = fcounts.items()
|
|
items.sort()
|
|
for fname, flist in items:
|
|
if len(flist) > 1:
|
|
parser.print_decls(flist)
|