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[wtp-dev] Yet another possibke JavaScript parser for JSDT
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Google Closure Compiler (https://github.com/google/closure-compiler) has parser that can be used in JSDT.
It's Rhino based, supports ES6, has configurable source mode (ES3, ES5, ES5_STRICT, ES6, ES6_STRICT, ES6_TYPED) and
"tolerant".
It's slower than shift and nashorn, but its java nature, project activity, "tolerance" and estree output makes it a good
alternative to esprima.
It's hard to say what is better to wait for ES6 support in nashorn or use closure :-), but I hope this information is
useful.
Below are benchmarks:
# Run complete. Total time: 00:55:48
Benchmark Mode Cnt Score Error Units
ClosureParser.testAngular125 thrpt 200 35,088 ? 0,140 ops/s
ClosureParser.testJQM142 thrpt 200 31,035 ? 0,136 ops/s
EsprimaWithNashorn.testAngular125 thrpt 200 16,322 ? 0,102 ops/s
EsprimaWithNashorn.testJQM142 thrpt 200 15,296 ? 0,177 ops/s
NashornParser.testAngular125 thrpt 200 63,632 ? 0,392 ops/s
NashornParser.testJQM142 thrpt 200 66,194 ? 0,325 ops/s
ShiftJava.testAngular125 thrpt 200 75,205 ? 0,481 ops/s
ShiftJava.testJQM142 thrpt 200 79,151 ? 0,493 ops/s
--
Eugene Melekhov
