9956b42392
The core of the transition is getting rid of Makefile and replacing it
with gulpfile.js. The rest is details (fixing dependencies, changing all
references to "make", etc.).
Target/task names mostly stay the same, so in most cases "gulp foo" does
what "make foo" did before. The only exceptions are "make browser" and
"make browserclean", which are now "gulp browser:build" and "gulp
browser:clean" (it feels more systematic).
Functionality is mostly unchanged (modulo Gulp clutter in the console),
but there are two small exceptions:
gulp spec
The reporter now displays just dots while previously it displayed
spec descriptions. There is also a deprecation warning (most likely
because I used an old version of gulp-jasmine in order to support
Jasmine 1.x). I kept these issues unfixed because I plan to switch
to Mocha soon (#409).
gulp browser:build
The copyright header is now added manually both to the development
and minified build. Before, it was added only to the development
build and the minified build relied on preserving it using "uglify
--comments". This was broken since switching to //-style comments.
There is now also an empty line between the header and the source
code.
Fixes #444.
117 lines
2.1 KiB
Bash
Executable file
117 lines
2.1 KiB
Bash
Executable file
#!/bin/sh
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# Measures impact of a Git commit (or multiple commits) on generated parsers'
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# speed and size. Makes sense to use only on PEG.js Git repository checkout.
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set -e
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export LC_ALL=C
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# Measurement
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prepare() {
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git checkout --quiet "$1"
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}
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run_benchmark() {
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echo $(gulp benchmark | awk 'BEGIN { FS = " *│ *" } /Total/ { split($5, a, " "); print a[1] }')
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}
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measure_speed() {
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bc <<-EOT
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scale = 2
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($(run_benchmark) + $(run_benchmark) + $(run_benchmark) + $(run_benchmark) + $(run_benchmark)) / 5
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EOT
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}
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measure_size() {
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for file in examples/*.pegjs; do
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bin/pegjs "$file"
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done
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echo $(cat examples/*.js | wc -c)
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rm examples/*.js
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}
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difference() {
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bc <<-EOT
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scale = 4
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($2 / $1 - 1) * 100
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EOT
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}
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# Helpers
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print_results() {
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echo
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echo "Speed impact"
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echo "------------"
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echo "Before: $1 kB/s"
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echo "After: $2 kB/s"
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printf "Difference: %0.2f%%\n" $(difference $1 $2)
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echo
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echo "Size impact"
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echo "-----------"
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echo "Before: $3 b"
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echo "After: $4 b"
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printf "Difference: %0.2f%%\n" $(difference $3 $4)
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echo
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echo "(Measured by /tools/impact with Node.js $(node --version) on $(uname -mrs).)"
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}
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print_usage() {
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echo "Usage:"
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echo " $0 <commit>"
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echo " $0 <commit_before> <commit_after>"
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echo
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echo "Measures impact of a Git commit (or multiple commits) on generated parsers'"
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echo "speed and size. Makes sense to use only on PEG.js Git repository checkout."
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}
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cd_to_root() {
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if [ -L "$0" ]; then
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THIS_FILE=$(readlink "$0")
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else
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THIS_FILE="$0"
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fi
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cd "$(dirname "$THIS_FILE")/.."
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}
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exit_failure() {
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exit 1
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}
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# Main
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if [ $# -eq 1 ]; then
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commit_before="$1~1"
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commit_after="$1"
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elif [ $# -eq 2 ]; then
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commit_before="$1"
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commit_after="$2"
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else
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print_usage
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exit_failure
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fi
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cd_to_root
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printf "Measuring commit %s..." "$commit_before"
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prepare "$commit_before"
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speed1=$(measure_speed)
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size1=$(measure_size)
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echo " OK"
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printf "Measuring commit %s..." "$commit_after"
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prepare "$commit_after"
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speed2=$(measure_speed)
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size2=$(measure_size)
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echo " OK"
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print_results $speed1 $speed2 $size1 $size2
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