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@@ -0,0 +1,189 b'' | |||
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1 | """Tests for the blockbreaker module. | |
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2 | """ | |
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3 | #----------------------------------------------------------------------------- | |
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4 | # Copyright (C) 2010 The IPython Development Team | |
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5 | # | |
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6 | # Distributed under the terms of the BSD License. The full license is in | |
|
7 | # the file COPYING, distributed as part of this software. | |
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8 | #----------------------------------------------------------------------------- | |
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9 | ||
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10 | #----------------------------------------------------------------------------- | |
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11 | # Imports | |
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12 | #----------------------------------------------------------------------------- | |
|
13 | # stdlib | |
|
14 | import unittest | |
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15 | ||
|
16 | # Third party | |
|
17 | import nose.tools as nt | |
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18 | ||
|
19 | # Our own | |
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20 | from IPython.core import blockbreaker as BB | |
|
21 | ||
|
22 | #----------------------------------------------------------------------------- | |
|
23 | # Tests | |
|
24 | #----------------------------------------------------------------------------- | |
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25 | def test_spaces(): | |
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26 | tests = [('', 0), | |
|
27 | (' ', 1), | |
|
28 | ('\n', 0), | |
|
29 | (' \n', 1), | |
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30 | ('x', 0), | |
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31 | (' x', 1), | |
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32 | (' x',2), | |
|
33 | (' x',4), | |
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34 | # Note: tabs are counted as a single whitespace! | |
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35 | ('\tx', 1), | |
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36 | ('\t x', 2), | |
|
37 | ] | |
|
38 | ||
|
39 | for s, nsp in tests: | |
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40 | nt.assert_equal(BB.num_ini_spaces(s), nsp) | |
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41 | ||
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42 | ||
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43 | def test_remove_comments(): | |
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44 | tests = [('text', 'text'), | |
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45 | ('text # comment', 'text '), | |
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46 | ('text # comment\n', 'text \n'), | |
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47 | ('text # comment \n', 'text \n'), | |
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48 | ('line # c \nline\n','line \nline\n'), | |
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49 | ('line # c \nline#c2 \nline\nline #c\n\n', | |
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50 | 'line \nline\nline\nline \n\n'), | |
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51 | ] | |
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52 | ||
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53 | for inp, out in tests: | |
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54 | nt.assert_equal(BB.remove_comments(inp), out) | |
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55 | ||
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56 | ||
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57 | def test_get_input_encoding(): | |
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58 | encoding = BB.get_input_encoding() | |
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59 | nt.assert_true(isinstance(encoding, basestring)) | |
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60 | # simple-minded check that at least encoding a simple string works with the | |
|
61 | # encoding we got. | |
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62 | nt.assert_equal('test'.encode(encoding), 'test') | |
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63 | ||
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64 | ||
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65 | class BlockBreakerTestCase(unittest.TestCase): | |
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66 | def setUp(self): | |
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67 | self.bb = BB.BlockBreaker() | |
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68 | ||
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69 | def test_reset(self): | |
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70 | bb = self.bb | |
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71 | bb.push('x=1') | |
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72 | bb.reset() | |
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73 | self.assertEqual(bb._buffer, []) | |
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74 | self.assertEqual(bb.indent_spaces, 0) | |
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75 | self.assertEqual(bb.source, '') | |
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76 | self.assertEqual(bb.code, None) | |
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77 | ||
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78 | def test_source(self): | |
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79 | self.bb._store('1') | |
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80 | self.bb._store('2') | |
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81 | self.assertEqual(self.bb.source, '1\n2\n') | |
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82 | self.assertTrue(len(self.bb._buffer)>0) | |
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83 | self.assertEqual(self.bb.source_reset(), '1\n2\n') | |
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84 | self.assertEqual(self.bb._buffer, []) | |
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85 | self.assertEqual(self.bb.source, '') | |
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86 | ||
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87 | def test_indent(self): | |
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88 | bb = self.bb # shorthand | |
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89 | bb.push('x=1') | |
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90 | self.assertEqual(bb.indent_spaces, 0) | |
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91 | bb.push('if 1:\n x=1') | |
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92 | self.assertEqual(bb.indent_spaces, 4) | |
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93 | bb.push('y=2\n') | |
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94 | self.assertEqual(bb.indent_spaces, 0) | |
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95 | bb.push('if 1:') | |
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96 | self.assertEqual(bb.indent_spaces, 4) | |
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97 | bb.push(' x=1') | |
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98 | self.assertEqual(bb.indent_spaces, 4) | |
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99 | # Blank lines shouldn't change the indent level | |
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100 | bb.push(' '*2) | |
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101 | self.assertEqual(bb.indent_spaces, 4) | |
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102 | ||
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103 | def test_indent2(self): | |
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104 | bb = self.bb | |
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105 | # When a multiline statement contains parens or multiline strings, we | |
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106 | # shouldn't get confused. | |
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107 | bb.push("if 1:") | |
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108 | bb.push(" x = (1+\n 2)") | |
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109 | self.assertEqual(bb.indent_spaces, 4) | |
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110 | ||
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111 | def test_dedent(self): | |
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112 | bb = self.bb # shorthand | |
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113 | bb.push('if 1:') | |
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114 | self.assertEqual(bb.indent_spaces, 4) | |
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115 | bb.push(' pass') | |
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116 | self.assertEqual(bb.indent_spaces, 0) | |
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117 | ||
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118 | def test_push(self): | |
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119 | bb = self.bb | |
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120 | bb.push('x=1') | |
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121 | self.assertTrue(bb.is_complete) | |
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122 | ||
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123 | def test_push2(self): | |
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124 | bb = self.bb | |
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125 | bb.push('if 1:') | |
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126 | self.assertFalse(bb.is_complete) | |
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127 | for line in [' x=1', '# a comment', ' y=2']: | |
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128 | bb.push(line) | |
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129 | self.assertTrue(bb.is_complete) | |
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130 | ||
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131 | def test_push3(self): | |
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132 | """Test input with leading whitespace""" | |
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133 | bb = self.bb | |
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134 | bb.push(' x=1') | |
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135 | bb.push(' y=2') | |
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136 | self.assertEqual(bb.source, 'if 1:\n x=1\n y=2\n') | |
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137 | ||
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138 | def test_replace_mode(self): | |
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139 | bb = self.bb | |
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140 | bb.input_mode = 'replace' | |
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141 | bb.push('x=1') | |
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142 | self.assertEqual(bb.source, 'x=1\n') | |
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143 | bb.push('x=2') | |
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144 | self.assertEqual(bb.source, 'x=2\n') | |
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145 | ||
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146 | def test_interactive_block_ready(self): | |
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147 | bb = self.bb | |
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148 | bb.push('x=1') | |
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149 | self.assertTrue(bb.interactive_block_ready()) | |
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150 | ||
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151 | def test_interactive_block_ready2(self): | |
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152 | bb = self.bb | |
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153 | bb.push('if 1:') | |
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154 | self.assertFalse(bb.interactive_block_ready()) | |
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155 | bb.push(' x=1') | |
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156 | self.assertFalse(bb.interactive_block_ready()) | |
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157 | bb.push('') | |
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158 | self.assertTrue(bb.interactive_block_ready()) | |
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159 | ||
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160 | def test_interactive_block_ready3(self): | |
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161 | bb = self.bb | |
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162 | bb.push("x = (2+\n3)") | |
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163 | self.assertTrue(bb.interactive_block_ready()) | |
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164 | ||
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165 | def test_interactive_block_ready4(self): | |
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166 | bb = self.bb | |
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167 | # When a multiline statement contains parens or multiline strings, we | |
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168 | # shouldn't get confused. | |
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169 | # FIXME: we should be able to better handle de-dents in statements like | |
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170 | # multiline strings and multiline expressions (continued with \ or | |
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171 | # parens). Right now we aren't handling the indentation tracking quite | |
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172 | # correctly with this, though in practice it may not be too much of a | |
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173 | # problem. We'll need to see. | |
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174 | bb.push("if 1:") | |
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175 | bb.push(" x = (2+") | |
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176 | bb.push(" 3)") | |
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177 | self.assertFalse(bb.interactive_block_ready()) | |
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178 | bb.push(" y = 3") | |
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179 | self.assertFalse(bb.interactive_block_ready()) | |
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180 | bb.push('') | |
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181 | self.assertTrue(bb.interactive_block_ready()) | |
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182 | ||
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183 | def test_syntax_error(self): | |
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184 | bb = self.bb | |
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185 | # Syntax errors immediately produce a 'ready' block, so the invalid | |
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186 | # Python can be sent to the kernel for evaluation with possible ipython | |
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187 | # special-syntax conversion. | |
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188 | bb.push('run foo') | |
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189 | self.assertTrue(bb.interactive_block_ready()) |
@@ -27,6 +27,8 b' import sys' | |||
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27 | 27 | # Utilities |
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28 | 28 | #----------------------------------------------------------------------------- |
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29 | 29 | |
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30 | # FIXME: move these utilities to the general ward... | |
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31 | ||
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30 | 32 | # compiled regexps for autoindent management |
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31 | 33 | dedent_re = re.compile(r'^\s+raise|^\s+return|^\s+pass') |
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32 | 34 | ini_spaces_re = re.compile(r'^([ \t\r\f\v]+)') |
@@ -76,10 +78,7 b' def get_input_encoding():' | |||
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76 | 78 | # Classes and functions |
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77 | 79 | #----------------------------------------------------------------------------- |
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78 | 80 | |
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79 | ||
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80 | 81 | class BlockBreaker(object): |
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81 | # List | |
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82 | buffer = None | |
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83 | 82 | # Command compiler |
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84 | 83 | compile = None |
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85 | 84 | # Number of spaces of indentation |
@@ -92,59 +91,50 b' class BlockBreaker(object):' | |||
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92 | 91 | code = None |
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93 | 92 | # Boolean indicating whether the current block is complete |
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94 | 93 | is_complete = None |
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94 | # Input mode | |
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95 | input_mode = 'append' | |
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96 | ||
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97 | # Private attributes | |
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98 | ||
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99 | # List | |
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100 | _buffer = None | |
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95 | 101 | |
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96 | def __init__(self): | |
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97 | self.buffer = [] | |
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102 | def __init__(self, input_mode=None): | |
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103 | """Create a new BlockBreaker instance. | |
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104 | ||
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105 | Parameters | |
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106 | ---------- | |
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107 | input_mode : str | |
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108 | ||
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109 | One of 'append', 'replace', default is 'append'. This controls how | |
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110 | new inputs are used: in 'append' mode, they are appended to the | |
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111 | existing buffer and the whole buffer is compiled; in 'replace' mode, | |
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112 | each new input completely replaces all prior inputs. Replace mode is | |
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113 | thus equivalent to prepending a full reset() to every push() call. | |
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114 | ||
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115 | In practice, line-oriented clients likely want to use 'append' mode | |
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116 | while block-oriented ones will want to use 'replace'. | |
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117 | """ | |
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118 | self._buffer = [] | |
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98 | 119 | self.compile = codeop.CommandCompiler() |
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99 | 120 | self.encoding = get_input_encoding() |
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121 | self.input_mode = BlockBreaker.input_mode if input_mode is None \ | |
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122 | else input_mode | |
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100 | 123 | |
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101 | 124 | def reset(self): |
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102 | 125 | """Reset the input buffer and associated state.""" |
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103 | 126 | self.indent_spaces = 0 |
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104 | self.buffer[:] = [] | |
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127 | self._buffer[:] = [] | |
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105 | 128 | self.source = '' |
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129 | self.code = None | |
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106 | 130 | |
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107 |
def |
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108 | """Return the input source. | |
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109 | ||
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110 | Parameters | |
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111 | ---------- | |
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112 | reset : boolean | |
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113 | If true, all state is reset and prior input forgotten. | |
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131 | def source_reset(self): | |
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132 | """Return the input source and perform a full reset. | |
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114 | 133 | """ |
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115 | 134 | out = self.source |
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116 |
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117 | self.reset() | |
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135 | self.reset() | |
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118 | 136 | return out |
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119 | 137 | |
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120 | def update_indent(self, lines): | |
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121 | """Keep track of the indent level.""" | |
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122 | ||
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123 | for line in remove_comments(lines).splitlines(): | |
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124 | ||
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125 | if line and not line.isspace(): | |
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126 | if self.code is not None: | |
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127 | inisp = num_ini_spaces(line) | |
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128 | if inisp < self.indent_spaces: | |
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129 | self.indent_spaces = inisp | |
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130 | ||
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131 | if line[-1] == ':': | |
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132 | self.indent_spaces += 4 | |
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133 | elif dedent_re.match(line): | |
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134 | self.indent_spaces -= 4 | |
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135 | ||
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136 | def store(self, lines): | |
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137 | """Store one or more lines of input. | |
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138 | ||
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139 | If input lines are not newline-terminated, a newline is automatically | |
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140 | appended.""" | |
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141 | ||
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142 | if lines.endswith('\n'): | |
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143 | self.buffer.append(lines) | |
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144 | else: | |
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145 | self.buffer.append(lines+'\n') | |
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146 | self.source = ''.join(self.buffer).encode(self.encoding) | |
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147 | ||
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148 | 138 | def push(self, lines): |
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149 | 139 | """Push one ore more lines of input. |
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150 | 140 | |
@@ -166,28 +156,38 b' class BlockBreaker(object):' | |||
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166 | 156 | this value is also stored as an attribute so it can be queried at any |
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167 | 157 | time. |
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168 | 158 | """ |
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159 | if self.input_mode == 'replace': | |
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160 | self.reset() | |
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161 | ||
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169 | 162 | # If the source code has leading blanks, add 'if 1:\n' to it |
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170 | 163 | # this allows execution of indented pasted code. It is tempting |
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171 | 164 | # to add '\n' at the end of source to run commands like ' a=1' |
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172 | 165 | # directly, but this fails for more complicated scenarios |
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173 | if not self.buffer and lines[:1] in [' ', '\t']: | |
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166 | if not self._buffer and lines[:1] in [' ', '\t']: | |
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174 | 167 | lines = 'if 1:\n%s' % lines |
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175 | 168 | |
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176 | self.store(lines) | |
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169 | self._store(lines) | |
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177 | 170 | source = self.source |
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178 | 171 | |
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179 | 172 | # Before calling compile(), reset the code object to None so that if an |
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180 | 173 | # exception is raised in compilation, we don't mislead by having |
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181 | 174 | # inconsistent code/source attributes. |
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182 | 175 | self.code, self.is_complete = None, None |
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183 | self.code = self.compile(source) | |
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184 | # Compilation didn't produce any exceptions (though it may not have | |
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185 | # given a complete code object) | |
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186 | if self.code is None: | |
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187 | self.is_complete = False | |
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188 | else: | |
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176 | try: | |
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177 | self.code = self.compile(source) | |
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178 | # Invalid syntax can produce any of a number of different errors from | |
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179 | # inside the compiler, so we have to catch them all. Syntax errors | |
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180 | # immediately produce a 'ready' block, so the invalid Python can be | |
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181 | # sent to the kernel for evaluation with possible ipython | |
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182 | # special-syntax conversion. | |
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183 | except (SyntaxError, OverflowError, ValueError, TypeError, MemoryError): | |
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189 | 184 | self.is_complete = True |
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190 | self.update_indent(lines) | |
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185 | else: | |
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186 | # Compilation didn't produce any exceptions (though it may not have | |
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187 | # given a complete code object) | |
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188 | self.is_complete = self.code is not None | |
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189 | self._update_indent(lines) | |
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190 | ||
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191 | 191 | return self.is_complete |
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192 | 192 | |
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193 | 193 | def interactive_block_ready(self): |
@@ -223,163 +223,38 b' class BlockBreaker(object):' | |||
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223 | 223 | else: |
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224 | 224 | return False |
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225 | 225 | |
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226 | ||
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227 | 226 | def split_blocks(self, lines): |
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228 | 227 | """Split a multiline string into multiple input blocks""" |
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228 | raise NotImplementedError | |
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229 | 229 | |
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230 |
# |
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231 | # Tests | |
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232 |
# |
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230 | #------------------------------------------------------------------------ | |
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231 | # Private interface | |
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232 | #------------------------------------------------------------------------ | |
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233 | ||
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234 | def _update_indent(self, lines): | |
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235 | """Keep track of the indent level.""" | |
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236 | ||
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237 | for line in remove_comments(lines).splitlines(): | |
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238 | ||
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239 | if line and not line.isspace(): | |
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240 | if self.code is not None: | |
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241 | inisp = num_ini_spaces(line) | |
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242 | if inisp < self.indent_spaces: | |
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243 | self.indent_spaces = inisp | |
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233 | 244 | |
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234 | import unittest | |
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245 | if line[-1] == ':': | |
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246 | self.indent_spaces += 4 | |
|
247 | elif dedent_re.match(line): | |
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248 | self.indent_spaces -= 4 | |
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235 | 249 | |
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236 | import nose.tools as nt | |
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250 | def _store(self, lines): | |
|
251 | """Store one or more lines of input. | |
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237 | 252 |
|
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238 | ||
|
239 | def test_spaces(): | |
|
240 | tests = [('', 0), | |
|
241 | (' ', 1), | |
|
242 | ('\n', 0), | |
|
243 | (' \n', 1), | |
|
244 | ('x', 0), | |
|
245 | (' x', 1), | |
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246 | (' x',2), | |
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247 | (' x',4), | |
|
248 | # Note: tabs are counted as a single whitespace! | |
|
249 | ('\tx', 1), | |
|
250 | ('\t x', 2), | |
|
251 | ] | |
|
252 | ||
|
253 | for s, nsp in tests: | |
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254 | nt.assert_equal(num_ini_spaces(s), nsp) | |
|
255 | ||
|
256 | ||
|
257 | def test_remove_comments(): | |
|
258 | tests = [('text', 'text'), | |
|
259 | ('text # comment', 'text '), | |
|
260 | ('text # comment\n', 'text \n'), | |
|
261 | ('text # comment \n', 'text \n'), | |
|
262 | ('line # c \nline\n','line \nline\n'), | |
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263 | ('line # c \nline#c2 \nline\nline #c\n\n', | |
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264 | 'line \nline\nline\nline \n\n'), | |
|
265 | ] | |
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266 | ||
|
267 | for inp, out in tests: | |
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268 | nt.assert_equal(remove_comments(inp), out) | |
|
269 | ||
|
270 | ||
|
271 | def test_get_input_encoding(): | |
|
272 | encoding = get_input_encoding() | |
|
273 | nt.assert_true(isinstance(encoding, basestring)) | |
|
274 | # simple-minded check that at least encoding a simple string works with the | |
|
275 | # encoding we got. | |
|
276 | nt.assert_equal('test'.encode(encoding), 'test') | |
|
277 | ||
|
278 | ||
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279 | class BlockBreakerTestCase(unittest.TestCase): | |
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280 | def setUp(self): | |
|
281 | self.bb = BlockBreaker() | |
|
282 | ||
|
283 | def test_reset(self): | |
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284 | self.bb.store('hello') | |
|
285 | self.bb.reset() | |
|
286 | self.assertEqual(self.bb.buffer, []) | |
|
287 | self.assertEqual(self.bb.indent_spaces, 0) | |
|
288 | self.assertEqual(self.bb.get_source(), '') | |
|
289 | ||
|
290 | def test_source(self): | |
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291 | self.bb.store('1') | |
|
292 | self.bb.store('2') | |
|
293 | out = self.bb.get_source() | |
|
294 | self.assertEqual(out, '1\n2\n') | |
|
295 | out = self.bb.get_source(reset=True) | |
|
296 | self.assertEqual(out, '1\n2\n') | |
|
297 | self.assertEqual(self.bb.buffer, []) | |
|
298 | out = self.bb.get_source() | |
|
299 | self.assertEqual(out, '') | |
|
300 | ||
|
301 | def test_indent(self): | |
|
302 | bb = self.bb # shorthand | |
|
303 | bb.push('x=1') | |
|
304 | self.assertEqual(bb.indent_spaces, 0) | |
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305 | bb.push('if 1:\n x=1') | |
|
306 | self.assertEqual(bb.indent_spaces, 4) | |
|
307 | bb.push('y=2\n') | |
|
308 | self.assertEqual(bb.indent_spaces, 0) | |
|
309 | bb.push('if 1:') | |
|
310 | self.assertEqual(bb.indent_spaces, 4) | |
|
311 | bb.push(' x=1') | |
|
312 | self.assertEqual(bb.indent_spaces, 4) | |
|
313 | # Blank lines shouldn't change the indent level | |
|
314 | bb.push(' '*2) | |
|
315 | self.assertEqual(bb.indent_spaces, 4) | |
|
316 | ||
|
317 | def test_indent2(self): | |
|
318 | bb = self.bb | |
|
319 | # When a multiline statement contains parens or multiline strings, we | |
|
320 | # shouldn't get confused. | |
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321 | bb.push("if 1:") | |
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322 | bb.push(" x = (1+\n 2)") | |
|
323 | self.assertEqual(bb.indent_spaces, 4) | |
|
324 | ||
|
325 | def test_dedent(self): | |
|
326 | bb = self.bb # shorthand | |
|
327 | bb.push('if 1:') | |
|
328 | self.assertEqual(bb.indent_spaces, 4) | |
|
329 | bb.push(' pass') | |
|
330 | self.assertEqual(bb.indent_spaces, 0) | |
|
331 | ||
|
332 | def test_push(self): | |
|
333 | bb = self.bb | |
|
334 | bb.push('x=1') | |
|
335 | self.assertTrue(bb.is_complete) | |
|
336 | ||
|
337 | def test_push2(self): | |
|
338 | bb = self.bb | |
|
339 | bb.push('if 1:') | |
|
340 | self.assertFalse(bb.is_complete) | |
|
341 | for line in [' x=1', '# a comment', ' y=2']: | |
|
342 | bb.push(line) | |
|
343 | self.assertTrue(bb.is_complete) | |
|
344 | ||
|
345 | def test_push3(self): | |
|
346 | """Test input with leading whitespace""" | |
|
347 | bb = self.bb | |
|
348 | bb.push(' x=1') | |
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349 | bb.push(' y=2') | |
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350 | self.assertEqual(bb.source, 'if 1:\n x=1\n y=2\n') | |
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351 | ||
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352 | def test_interactive_block_ready(self): | |
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353 | bb = self.bb | |
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354 | bb.push('x=1') | |
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355 | self.assertTrue(bb.interactive_block_ready()) | |
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356 | ||
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357 | def test_interactive_block_ready2(self): | |
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358 | bb = self.bb | |
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359 | bb.push('if 1:\n x=1') | |
|
360 | self.assertFalse(bb.interactive_block_ready()) | |
|
361 | bb.push('') | |
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362 | self.assertTrue(bb.interactive_block_ready()) | |
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363 | ||
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364 | def test_interactive_block_ready3(self): | |
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365 | bb = self.bb | |
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366 | bb.push("x = (2+\n3)") | |
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367 | self.assertTrue(bb.interactive_block_ready()) | |
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368 | ||
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369 | def test_interactive_block_ready4(self): | |
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370 | bb = self.bb | |
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371 | # When a multiline statement contains parens or multiline strings, we | |
|
372 | # shouldn't get confused. | |
|
373 | # FIXME: we should be able to better handle de-dents in statements like | |
|
374 | # multiline strings and multiline expressions (continued with \ or | |
|
375 | # parens). Right now we aren't handling the indentation tracking quite | |
|
376 | # correctly with this, though in practice it may not be too much of a | |
|
377 | # problem. We'll need to see. | |
|
378 | bb.push("if 1:") | |
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379 | bb.push(" x = (2+") | |
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380 | bb.push(" 3)") | |
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381 | self.assertFalse(bb.interactive_block_ready()) | |
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382 | bb.push(" y = 3") | |
|
383 | self.assertFalse(bb.interactive_block_ready()) | |
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384 | bb.push('') | |
|
385 | self.assertTrue(bb.interactive_block_ready()) | |
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253 | If input lines are not newline-terminated, a newline is automatically | |
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254 | appended.""" | |
|
255 | ||
|
256 | if lines.endswith('\n'): | |
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257 | self._buffer.append(lines) | |
|
258 | else: | |
|
259 | self._buffer.append(lines+'\n') | |
|
260 | self.source = ''.join(self._buffer).encode(self.encoding) |
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