1 | #!/usr/bin/env bash
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2 | #
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3 | # Usage:
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4 | # ./compare.sh <function name>
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5 |
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6 | set -o nounset
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7 | set -o pipefail
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8 | set -o errexit
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9 |
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10 | readonly PY27=~/src/Python-2.7.6
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11 | readonly PY36=~/src/Python-3.6.1
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12 |
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13 | readonly DIFF=${DIFF:-diff -u}
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14 |
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15 | ceval() {
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16 | # 4900 lines vs 5500 lines. Wow
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17 | wc -l {$PY27,$PY36}/Python/ceval.c
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18 | return
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19 | $DIFF {$PY27,$PY36}/Python/ceval.c
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20 | }
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21 |
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22 | ccompile() {
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23 | # 4000 vs 5300 lines. Big increase. But it depends on the opcodes.
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24 | wc -l {$PY27,$PY36}/Python/compile.c
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25 | }
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26 |
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27 | opcodes() {
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28 | #cp -v $PY27/Lib/opcode.py _tmp/opcode27.py
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29 | #cp -v $PY36/Lib/opcode.py _tmp/opcode36.py
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30 |
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31 | $DIFF _tmp/opcode{27,36}.py
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32 | return
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33 |
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34 | cp $PY27/Lib/dis.py _tmp/dis27.py
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35 | cp $PY36/Lib/dis.py _tmp/dis36.py
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36 |
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37 | $DIFF _tmp/dis{27,36}.py
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38 | }
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39 |
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40 | 2to3-grammar() {
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41 | # The compiler package was written for a different grammar!
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42 | $DIFF $PY27/Grammar/Grammar 2to3.grammar
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43 | }
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44 |
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45 | # pgen2 has BACKQUOTE = 25. No main.
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46 | tokens() {
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47 | $DIFF token.py pgen2/token.py
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48 | }
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49 |
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50 | # This is very different -- is it Python 2 vs. Python 3?
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51 | tokenize() {
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52 | $DIFF tokenize.py pgen2/tokenize.py
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53 | }
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54 |
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55 | compiler2() {
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56 | #diff -u $PY27/Lib/compiler/ compiler2
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57 |
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58 | # The version we're actually running
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59 | diff -u /usr/lib/python2.7/compiler/ compiler2
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60 | }
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61 |
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62 | compiler26-27() {
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63 | diff -u ~/src/Python-2.{6,7}.9/Lib/compiler/
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64 | }
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65 |
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66 | compiler27() {
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67 | diff -u ~/src/Python-2.7.{2,9}/Lib/compiler/
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68 | }
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69 |
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70 | set27() {
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71 | diff -u ~/src/Python-2.7.{2,3}/Objects/setobject.c
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72 | }
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73 |
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74 | if test $(basename $0) = compare.sh; then
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75 | "$@"
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76 | fi
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