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Diffstat (limited to 'gtest/scripts/pump.py')
| -rwxr-xr-x | gtest/scripts/pump.py | 835 |
1 files changed, 0 insertions, 835 deletions
diff --git a/gtest/scripts/pump.py b/gtest/scripts/pump.py deleted file mode 100755 index f15c1b6..0000000 --- a/gtest/scripts/pump.py +++ /dev/null @@ -1,835 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 2008, Google Inc. -# All rights reserved. -# -# Redistribution and use in source and binary forms, with or without -# modification, are permitted provided that the following conditions are -# met: -# -# * Redistributions of source code must retain the above copyright -# notice, this list of conditions and the following disclaimer. -# * Redistributions in binary form must reproduce the above -# copyright notice, this list of conditions and the following disclaimer -# in the documentation and/or other materials provided with the -# distribution. -# * Neither the name of Google Inc. nor the names of its -# contributors may be used to endorse or promote products derived from -# this software without specific prior written permission. -# -# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -"""pump v0.1 - Pretty Useful for Meta Programming. - -A tool for preprocessor meta programming. Useful for generating -repetitive boilerplate code. Especially useful for writing C++ -classes, functions, macros, and templates that need to work with -various number of arguments. - -USAGE: - pump.py SOURCE_FILE - -EXAMPLES: - pump.py foo.cc.pump - Converts foo.cc.pump to foo.cc. - -GRAMMAR: - CODE ::= ATOMIC_CODE* - ATOMIC_CODE ::= $var ID = EXPRESSION - | $var ID = [[ CODE ]] - | $range ID EXPRESSION..EXPRESSION - | $for ID SEPARATOR [[ CODE ]] - | $($) - | $ID - | $(EXPRESSION) - | $if EXPRESSION [[ CODE ]] ELSE_BRANCH - | [[ CODE ]] - | RAW_CODE - SEPARATOR ::= RAW_CODE | EMPTY - ELSE_BRANCH ::= $else [[ CODE ]] - | $elif EXPRESSION [[ CODE ]] ELSE_BRANCH - | EMPTY - EXPRESSION has Python syntax. -""" - -__author__ = 'wan@google.com (Zhanyong Wan)' - -import os -import re -import sys - - -TOKEN_TABLE = [ - (re.compile(r'\$var\s+'), '$var'), - (re.compile(r'\$elif\s+'), '$elif'), - (re.compile(r'\$else\s+'), '$else'), - (re.compile(r'\$for\s+'), '$for'), - (re.compile(r'\$if\s+'), '$if'), - (re.compile(r'\$range\s+'), '$range'), - (re.compile(r'\$[_A-Za-z]\w*'), '$id'), - (re.compile(r'\$\(\$\)'), '$($)'), - (re.compile(r'\$\$.*'), '$$'), - (re.compile(r'\$'), '$'), - (re.compile(r'\[\[\n?'), '[['), - (re.compile(r'\]\]\n?'), ']]'), - ] - - -class Cursor: - """Represents a position (line and column) in a text file.""" - - def __init__(self, line=-1, column=-1): - self.line = line - self.column = column - - def __eq__(self, rhs): - return self.line == rhs.line and self.column == rhs.column - - def __ne__(self, rhs): - return not self == rhs - - def __lt__(self, rhs): - return self.line < rhs.line or ( - self.line == rhs.line and self.column < rhs.column) - - def __le__(self, rhs): - return self < rhs or self == rhs - - def __gt__(self, rhs): - return rhs < self - - def __ge__(self, rhs): - return rhs <= self - - def __str__(self): - if self == Eof(): - return 'EOF' - else: - return '%s(%s)' % (self.line + 1, self.column) - - def __add__(self, offset): - return Cursor(self.line, self.column + offset) - - def __sub__(self, offset): - return Cursor(self.line, self.column - offset) - - def Clone(self): - """Returns a copy of self.""" - - return Cursor(self.line, self.column) - - -# Special cursor to indicate the end-of-file. -def Eof(): - """Returns the special cursor to denote the end-of-file.""" - return Cursor(-1, -1) - - -class Token: - """Represents a token in a Pump source file.""" - - def __init__(self, start=None, end=None, value=None, token_type=None): - if start is None: - self.start = Eof() - else: - self.start = start - if end is None: - self.end = Eof() - else: - self.end = end - self.value = value - self.token_type = token_type - - def __str__(self): - return 'Token @%s: \'%s\' type=%s' % ( - self.start, self.value, self.token_type) - - def Clone(self): - """Returns a copy of self.""" - - return Token(self.start.Clone(), self.end.Clone(), self.value, - self.token_type) - - -def StartsWith(lines, pos, string): - """Returns True iff the given position in lines starts with 'string'.""" - - return lines[pos.line][pos.column:].startswith(string) - - -def FindFirstInLine(line, token_table): - best_match_start = -1 - for (regex, token_type) in token_table: - m = regex.search(line) - if m: - # We found regex in lines - if best_match_start < 0 or m.start() < best_match_start: - best_match_start = m.start() - best_match_length = m.end() - m.start() - best_match_token_type = token_type - - if best_match_start < 0: - return None - - return (best_match_start, best_match_length, best_match_token_type) - - -def FindFirst(lines, token_table, cursor): - """Finds the first occurrence of any string in strings in lines.""" - - start = cursor.Clone() - cur_line_number = cursor.line - for line in lines[start.line:]: - if cur_line_number == start.line: - line = line[start.column:] - m = FindFirstInLine(line, token_table) - if m: - # We found a regex in line. - (start_column, length, token_type) = m - if cur_line_number == start.line: - start_column += start.column - found_start = Cursor(cur_line_number, start_column) - found_end = found_start + length - return MakeToken(lines, found_start, found_end, token_type) - cur_line_number += 1 - # We failed to find str in lines - return None - - -def SubString(lines, start, end): - """Returns a substring in lines.""" - - if end == Eof(): - end = Cursor(len(lines) - 1, len(lines[-1])) - - if start >= end: - return '' - - if start.line == end.line: - return lines[start.line][start.column:end.column] - - result_lines = ([lines[start.line][start.column:]] + - lines[start.line + 1:end.line] + - [lines[end.line][:end.column]]) - return ''.join(result_lines) - - -def MakeToken(lines, start, end, token_type): - """Creates a new instance of Token.""" - - return Token(start, end, SubString(lines, start, end), token_type) - - -def ParseToken(lines, pos, regex, token_type): - line = lines[pos.line][pos.column:] - m = regex.search(line) - if m and not m.start(): - return MakeToken(lines, pos, pos + m.end(), token_type) - else: - print 'ERROR: %s expected at %s.' % (token_type, pos) - sys.exit(1) - - -ID_REGEX = re.compile(r'[_A-Za-z]\w*') -EQ_REGEX = re.compile(r'=') -REST_OF_LINE_REGEX = re.compile(r'.*?(?=$|\$\$)') -OPTIONAL_WHITE_SPACES_REGEX = re.compile(r'\s*') -WHITE_SPACE_REGEX = re.compile(r'\s') -DOT_DOT_REGEX = re.compile(r'\.\.') - - -def Skip(lines, pos, regex): - line = lines[pos.line][pos.column:] - m = re.search(regex, line) - if m and not m.start(): - return pos + m.end() - else: - return pos - - -def SkipUntil(lines, pos, regex, token_type): - line = lines[pos.line][pos.column:] - m = re.search(regex, line) - if m: - return pos + m.start() - else: - print ('ERROR: %s expected on line %s after column %s.' % - (token_type, pos.line + 1, pos.column)) - sys.exit(1) - - -def ParseExpTokenInParens(lines, pos): - def ParseInParens(pos): - pos = Skip(lines, pos, OPTIONAL_WHITE_SPACES_REGEX) - pos = Skip(lines, pos, r'\(') - pos = Parse(pos) - pos = Skip(lines, pos, r'\)') - return pos - - def Parse(pos): - pos = SkipUntil(lines, pos, r'\(|\)', ')') - if SubString(lines, pos, pos + 1) == '(': - pos = Parse(pos + 1) - pos = Skip(lines, pos, r'\)') - return Parse(pos) - else: - return pos - - start = pos.Clone() - pos = ParseInParens(pos) - return MakeToken(lines, start, pos, 'exp') - - -def RStripNewLineFromToken(token): - if token.value.endswith('\n'): - return Token(token.start, token.end, token.value[:-1], token.token_type) - else: - return token - - -def TokenizeLines(lines, pos): - while True: - found = FindFirst(lines, TOKEN_TABLE, pos) - if not found: - yield MakeToken(lines, pos, Eof(), 'code') - return - - if found.start == pos: - prev_token = None - prev_token_rstripped = None - else: - prev_token = MakeToken(lines, pos, found.start, 'code') - prev_token_rstripped = RStripNewLineFromToken(prev_token) - - if found.token_type == '$$': # A meta comment. - if prev_token_rstripped: - yield prev_token_rstripped - pos = Cursor(found.end.line + 1, 0) - elif found.token_type == '$var': - if prev_token_rstripped: - yield prev_token_rstripped - yield found - id_token = ParseToken(lines, found.end, ID_REGEX, 'id') - yield id_token - pos = Skip(lines, id_token.end, OPTIONAL_WHITE_SPACES_REGEX) - - eq_token = ParseToken(lines, pos, EQ_REGEX, '=') - yield eq_token - pos = Skip(lines, eq_token.end, r'\s*') - - if SubString(lines, pos, pos + 2) != '[[': - exp_token = ParseToken(lines, pos, REST_OF_LINE_REGEX, 'exp') - yield exp_token - pos = Cursor(exp_token.end.line + 1, 0) - elif found.token_type == '$for': - if prev_token_rstripped: - yield prev_token_rstripped - yield found - id_token = ParseToken(lines, found.end, ID_REGEX, 'id') - yield id_token - pos = Skip(lines, id_token.end, WHITE_SPACE_REGEX) - elif found.token_type == '$range': - if prev_token_rstripped: - yield prev_token_rstripped - yield found - id_token = ParseToken(lines, found.end, ID_REGEX, 'id') - yield id_token - pos = Skip(lines, id_token.end, OPTIONAL_WHITE_SPACES_REGEX) - - dots_pos = SkipUntil(lines, pos, DOT_DOT_REGEX, '..') - yield MakeToken(lines, pos, dots_pos, 'exp') - yield MakeToken(lines, dots_pos, dots_pos + 2, '..') - pos = dots_pos + 2 - new_pos = Cursor(pos.line + 1, 0) - yield MakeToken(lines, pos, new_pos, 'exp') - pos = new_pos - elif found.token_type == '$': - if prev_token: - yield prev_token - yield found - exp_token = ParseExpTokenInParens(lines, found.end) - yield exp_token - pos = exp_token.end - elif (found.token_type == ']]' or found.token_type == '$if' or - found.token_type == '$elif' or found.token_type == '$else'): - if prev_token_rstripped: - yield prev_token_rstripped - yield found - pos = found.end - else: - if prev_token: - yield prev_token - yield found - pos = found.end - - -def Tokenize(s): - lines = s.splitlines(True) - return TokenizeLines(lines, Cursor(0, 0)) - - -class CodeNode: - def __init__(self, atomic_code_list=None): - self.atomic_code = atomic_code_list - - -class VarNode: - def __init__(self, identifier=None, atomic_code=None): - self.identifier = identifier - self.atomic_code = atomic_code - - -class RangeNode: - def __init__(self, identifier=None, exp1=None, exp2=None): - self.identifier = identifier - self.exp1 = exp1 - self.exp2 = exp2 - - -class ForNode: - def __init__(self, identifier=None, sep=None, code=None): - self.identifier = identifier - self.sep = sep - self.code = code - - -class ElseNode: - def __init__(self, else_branch=None): - self.else_branch = else_branch - - -class IfNode: - def __init__(self, exp=None, then_branch=None, else_branch=None): - self.exp = exp - self.then_branch = then_branch - self.else_branch = else_branch - - -class RawCodeNode: - def __init__(self, token=None): - self.raw_code = token - - -class LiteralDollarNode: - def __init__(self, token): - self.token = token - - -class ExpNode: - def __init__(self, token, python_exp): - self.token = token - self.python_exp = python_exp - - -def PopFront(a_list): - head = a_list[0] - a_list[:1] = [] - return head - - -def PushFront(a_list, elem): - a_list[:0] = [elem] - - -def PopToken(a_list, token_type=None): - token = PopFront(a_list) - if token_type is not None and token.token_type != token_type: - print 'ERROR: %s expected at %s' % (token_type, token.start) - print 'ERROR: %s found instead' % (token,) - sys.exit(1) - - return token - - -def PeekToken(a_list): - if not a_list: - return None - - return a_list[0] - - -def ParseExpNode(token): - python_exp = re.sub(r'([_A-Za-z]\w*)', r'self.GetValue("\1")', token.value) - return ExpNode(token, python_exp) - - -def ParseElseNode(tokens): - def Pop(token_type=None): - return PopToken(tokens, token_type) - - next = PeekToken(tokens) - if not next: - return None - if next.token_type == '$else': - Pop('$else') - Pop('[[') - code_node = ParseCodeNode(tokens) - Pop(']]') - return code_node - elif next.token_type == '$elif': - Pop('$elif') - exp = Pop('code') - Pop('[[') - code_node = ParseCodeNode(tokens) - Pop(']]') - inner_else_node = ParseElseNode(tokens) - return CodeNode([IfNode(ParseExpNode(exp), code_node, inner_else_node)]) - elif not next.value.strip(): - Pop('code') - return ParseElseNode(tokens) - else: - return None - - -def ParseAtomicCodeNode(tokens): - def Pop(token_type=None): - return PopToken(tokens, token_type) - - head = PopFront(tokens) - t = head.token_type - if t == 'code': - return RawCodeNode(head) - elif t == '$var': - id_token = Pop('id') - Pop('=') - next = PeekToken(tokens) - if next.token_type == 'exp': - exp_token = Pop() - return VarNode(id_token, ParseExpNode(exp_token)) - Pop('[[') - code_node = ParseCodeNode(tokens) - Pop(']]') - return VarNode(id_token, code_node) - elif t == '$for': - id_token = Pop('id') - next_token = PeekToken(tokens) - if next_token.token_type == 'code': - sep_token = next_token - Pop('code') - else: - sep_token = None - Pop('[[') - code_node = ParseCodeNode(tokens) - Pop(']]') - return ForNode(id_token, sep_token, code_node) - elif t == '$if': - exp_token = Pop('code') - Pop('[[') - code_node = ParseCodeNode(tokens) - Pop(']]') - else_node = ParseElseNode(tokens) - return IfNode(ParseExpNode(exp_token), code_node, else_node) - elif t == '$range': - id_token = Pop('id') - exp1_token = Pop('exp') - Pop('..') - exp2_token = Pop('exp') - return RangeNode(id_token, ParseExpNode(exp1_token), - ParseExpNode(exp2_token)) - elif t == '$id': - return ParseExpNode(Token(head.start + 1, head.end, head.value[1:], 'id')) - elif t == '$($)': - return LiteralDollarNode(head) - elif t == '$': - exp_token = Pop('exp') - return ParseExpNode(exp_token) - elif t == '[[': - code_node = ParseCodeNode(tokens) - Pop(']]') - return code_node - else: - PushFront(tokens, head) - return None - - -def ParseCodeNode(tokens): - atomic_code_list = [] - while True: - if not tokens: - break - atomic_code_node = ParseAtomicCodeNode(tokens) - if atomic_code_node: - atomic_code_list.append(atomic_code_node) - else: - break - return CodeNode(atomic_code_list) - - -def Convert(file_path): - s = file(file_path, 'r').read() - tokens = [] - for token in Tokenize(s): - tokens.append(token) - code_node = ParseCodeNode(tokens) - return code_node - - -class Env: - def __init__(self): - self.variables = [] - self.ranges = [] - - def Clone(self): - clone = Env() - clone.variables = self.variables[:] - clone.ranges = self.ranges[:] - return clone - - def PushVariable(self, var, value): - # If value looks like an int, store it as an int. - try: - int_value = int(value) - if ('%s' % int_value) == value: - value = int_value - except Exception: - pass - self.variables[:0] = [(var, value)] - - def PopVariable(self): - self.variables[:1] = [] - - def PushRange(self, var, lower, upper): - self.ranges[:0] = [(var, lower, upper)] - - def PopRange(self): - self.ranges[:1] = [] - - def GetValue(self, identifier): - for (var, value) in self.variables: - if identifier == var: - return value - - print 'ERROR: meta variable %s is undefined.' % (identifier,) - sys.exit(1) - - def EvalExp(self, exp): - try: - result = eval(exp.python_exp) - except Exception, e: - print 'ERROR: caught exception %s: %s' % (e.__class__.__name__, e) - print ('ERROR: failed to evaluate meta expression %s at %s' % - (exp.python_exp, exp.token.start)) - sys.exit(1) - return result - - def GetRange(self, identifier): - for (var, lower, upper) in self.ranges: - if identifier == var: - return (lower, upper) - - print 'ERROR: range %s is undefined.' % (identifier,) - sys.exit(1) - - -class Output: - def __init__(self): - self.string = '' - - def GetLastLine(self): - index = self.string.rfind('\n') - if index < 0: - return '' - - return self.string[index + 1:] - - def Append(self, s): - self.string += s - - -def RunAtomicCode(env, node, output): - if isinstance(node, VarNode): - identifier = node.identifier.value.strip() - result = Output() - RunAtomicCode(env.Clone(), node.atomic_code, result) - value = result.string - env.PushVariable(identifier, value) - elif isinstance(node, RangeNode): - identifier = node.identifier.value.strip() - lower = int(env.EvalExp(node.exp1)) - upper = int(env.EvalExp(node.exp2)) - env.PushRange(identifier, lower, upper) - elif isinstance(node, ForNode): - identifier = node.identifier.value.strip() - if node.sep is None: - sep = '' - else: - sep = node.sep.value - (lower, upper) = env.GetRange(identifier) - for i in range(lower, upper + 1): - new_env = env.Clone() - new_env.PushVariable(identifier, i) - RunCode(new_env, node.code, output) - if i != upper: - output.Append(sep) - elif isinstance(node, RawCodeNode): - output.Append(node.raw_code.value) - elif isinstance(node, IfNode): - cond = env.EvalExp(node.exp) - if cond: - RunCode(env.Clone(), node.then_branch, output) - elif node.else_branch is not None: - RunCode(env.Clone(), node.else_branch, output) - elif isinstance(node, ExpNode): - value = env.EvalExp(node) - output.Append('%s' % (value,)) - elif isinstance(node, LiteralDollarNode): - output.Append('$') - elif isinstance(node, CodeNode): - RunCode(env.Clone(), node, output) - else: - print 'BAD' - print node - sys.exit(1) - - -def RunCode(env, code_node, output): - for atomic_code in code_node.atomic_code: - RunAtomicCode(env, atomic_code, output) - - -def IsComment(cur_line): - return '//' in cur_line - - -def IsInPreprocessorDirevative(prev_lines, cur_line): - if cur_line.lstrip().startswith('#'): - return True - return prev_lines != [] and prev_lines[-1].endswith('\\') - - -def WrapComment(line, output): - loc = line.find('//') - before_comment = line[:loc].rstrip() - if before_comment == '': - indent = loc - else: - output.append(before_comment) - indent = len(before_comment) - len(before_comment.lstrip()) - prefix = indent*' ' + '// ' - max_len = 80 - len(prefix) - comment = line[loc + 2:].strip() - segs = [seg for seg in re.split(r'(\w+\W*)', comment) if seg != ''] - cur_line = '' - for seg in segs: - if len((cur_line + seg).rstrip()) < max_len: - cur_line += seg - else: - if cur_line.strip() != '': - output.append(prefix + cur_line.rstrip()) - cur_line = seg.lstrip() - if cur_line.strip() != '': - output.append(prefix + cur_line.strip()) - - -def WrapCode(line, line_concat, output): - indent = len(line) - len(line.lstrip()) - prefix = indent*' ' # Prefix of the current line - max_len = 80 - indent - len(line_concat) # Maximum length of the current line - new_prefix = prefix + 4*' ' # Prefix of a continuation line - new_max_len = max_len - 4 # Maximum length of a continuation line - # Prefers to wrap a line after a ',' or ';'. - segs = [seg for seg in re.split(r'([^,;]+[,;]?)', line.strip()) if seg != ''] - cur_line = '' # The current line without leading spaces. - for seg in segs: - # If the line is still too long, wrap at a space. - while cur_line == '' and len(seg.strip()) > max_len: - seg = seg.lstrip() - split_at = seg.rfind(' ', 0, max_len) - output.append(prefix + seg[:split_at].strip() + line_concat) - seg = seg[split_at + 1:] - prefix = new_prefix - max_len = new_max_len - - if len((cur_line + seg).rstrip()) < max_len: - cur_line = (cur_line + seg).lstrip() - else: - output.append(prefix + cur_line.rstrip() + line_concat) - prefix = new_prefix - max_len = new_max_len - cur_line = seg.lstrip() - if cur_line.strip() != '': - output.append(prefix + cur_line.strip()) - - -def WrapPreprocessorDirevative(line, output): - WrapCode(line, ' \\', output) - - -def WrapPlainCode(line, output): - WrapCode(line, '', output) - - -def IsHeaderGuardOrInclude(line): - return (re.match(r'^#(ifndef|define|endif\s*//)\s*[\w_]+\s*$', line) or - re.match(r'^#include\s', line)) - - -def WrapLongLine(line, output): - line = line.rstrip() - if len(line) <= 80: - output.append(line) - elif IsComment(line): - if IsHeaderGuardOrInclude(line): - # The style guide made an exception to allow long header guard lines - # and includes. - output.append(line) - else: - WrapComment(line, output) - elif IsInPreprocessorDirevative(output, line): - if IsHeaderGuardOrInclude(line): - # The style guide made an exception to allow long header guard lines - # and includes. - output.append(line) - else: - WrapPreprocessorDirevative(line, output) - else: - WrapPlainCode(line, output) - - -def BeautifyCode(string): - lines = string.splitlines() - output = [] - for line in lines: - WrapLongLine(line, output) - output2 = [line.rstrip() for line in output] - return '\n'.join(output2) + '\n' - - -def main(argv): - if len(argv) == 1: - print __doc__ - sys.exit(1) - - file_path = argv[-1] - ast = Convert(file_path) - output = Output() - RunCode(Env(), ast, output) - output_str = BeautifyCode(output.string) - if file_path.endswith('.pump'): - output_file_path = file_path[:-5] - else: - output_file_path = '-' - if output_file_path == '-': - print output_str, - else: - output_file = file(output_file_path, 'w') - output_file.write('// This file was GENERATED by command:\n') - output_file.write('// %s %s\n' % - (os.path.basename(__file__), os.path.basename(file_path))) - output_file.write('// DO NOT EDIT BY HAND!!!\n\n') - output_file.write(output_str) - output_file.close() - - -if __name__ == '__main__': - main(sys.argv) |