PowerBridge

EasyLanguage / PowerLanguage to Python transpiler, and back.

Write and test a strategy in Python, then emit compile-safe EasyLanguage for MultiCharts or TradeStation. Or take existing EL and run it bar-by-bar in Python. The import name is pl_transpiler. Everything is the Python standard library: no PyPI deps, no network.

It would rather stop than guess. Unsupported keywords are reported in one pass.

Install

Python 3.9 or newer.

pip install .

That installs the pl_transpiler package and three commands: el_emit, pl_run, and pl_transpile.

Examples below use ground_truth/GT2_strategy_orders_position.txt (a small moving-average cross) and examples/NQ_sample_bars.csv (synthetic bars). Run them from the repository root.

Quickstart

EasyLanguage to Python, then a backtest

pl_run executes generated Python on your machine. Only run files you trust. Transpiling a file does not execute it.

pl_run ground_truth/GT2_strategy_orders_position.txt examples/NQ_sample_bars.csv \
    --config NQ --columns marketpos,netprofit,totaltrades -o run_out.csv

Python (mirror dialect) to EasyLanguage

from pl_transpiler import transpile
el = open("ground_truth/GT1_functions_indicators.txt").read()
open("GT1_mirror.py", "w").write(transpile(el, trace=False))

el_emit GT1_mirror.py -o GT1_from_python.txt

el_emit fails closed: if the emitted EL is not compile-safe it writes nothing usable and exits non-zero. Without the optional MultiCharts keyword index (not shipped; see Limitations) the name-proof step is skipped and only argument-count and return-type checks run.

As a library

from pl_transpiler import transpile
from pl_transpiler.tools.pl_run import run_el, load_bars_csv
from pl_transpiler.runtime.instrument_config import get_config

py = transpile(open("ground_truth/GT2_strategy_orders_position.txt").read())
out = run_el(
    open("ground_truth/GT2_strategy_orders_position.txt").read(),
    load_bars_csv("examples/NQ_sample_bars.csv"),
    get_config("NQ"),
    trace_columns=["marketpos", "netprofit"],
)
print(len(py.splitlines()), "lines;", len(out["rows"]), "bars;", len(out["trades"]), "trades")

Look up a keyword:

from pl_transpiler import catalog
print(catalog.get("DayFromDateTime"))
print(catalog.coverage())

python3 -m pl_transpiler.catalog --search date

Agents and scripts: see AGENTS.md. LLM dialect notes: docs/LLM_DIALECT.md. Bar and capture format: docs/CAPTURES.md.

Unsupported keywords

Default is all or nothing. pl_transpile walks the whole file, lists every unimplemented keyword with its line, writes no Python, and exits non-zero.

--partial is only for incremental porting. Stubs raise when they run. Do not trust a backtest from partial output.

Tests

python3 tests/run_public_tier.py

That is the portable suite. Capture-backed gates skip cleanly when the large MultiCharts CSVs are absent. See docs/CAPTURES.md if you want to attach your own.

Limitations

• The Python to EL direction only reads the mirror dialect: the clean Python this transpiler itself emits. Arbitrary hand-written Python is out of scope.
• Checked against 1-minute @NQ and @ES bars only. Other instruments and timeframes are untested.
• Per-bar MultiCharts parity captures are not shipped. Those tests skip on a fresh clone.
• Fail-loud assumes valid EasyLanguage. A residual gap: assigning to a read-only report keyword that is not in the bundled catalog can be treated as a local. Catalog-known names are still caught.
• This tree is the library, tests, and docs. Internal build tooling is not shipped.

Licence

Apache License 2.0. See LICENSE and NOTICE.

MultiCharts / TradeStation keyword PDFs and any resources/ or db/ reference pack are third-party copyright and are not in this repository. The shipped replacement is pl_transpiler/tools/pl_signatures.jsonl plus mc_verified_builtins.txt.

PowerBridge is independent. It is not affiliated with TradeStation Technologies, Inc. or MultiCharts (MCT Limited). Those names are used only to describe compatibility.

Contributing

See CONTRIBUTING.md. Open an issue before a large change. Small fixes can be a pull request on their own.

This repository starts at a single commit. Earlier history is not included.