mirror of
https://github.com/imjasonh/loom
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c585ab55a3
Implement a Python-based bootstrap compiler for the Loom language, plus self-hosting lexer and parser written in Loom itself. Bootstrap compiler (Python): - Lexer: tokenizes all Loom syntax including multi-char operators - Parser: recursive descent with proper operator precedence - AST: dataclass-based node definitions - VM: executes Loom programs with main() as entry point - Stdlib: string, array, math, and file I/O functions - CLI: run command for executing .loom files Self-hosting components (Loom): - lexer.loom: complete lexer that can tokenize itself (298 tokens) - parser.loom: recursive descent parser producing dict-based AST - loom_compiler.loom: integrated lexer+parser for end-to-end compilation Example programs: - simple.loom, refund.loom: basic Loom syntax demos - arrays.loom: iteration constructs (@map, @filter, @reduce) - stdlib_test.loom, file_test.loom, unary_test.loom: feature tests Key language features implemented: - Nodes ($name), pipes (->), commits (!var), guards (?), journals (~>) - Branch expressions: (condition) true_expr : false_expr - Iteration: @each, @map, @filter, @reduce - Arrays, dicts, property access, function calls
23 lines
706 B
Text
23 lines
706 B
Text
@origin "Process a refund while checking for fraud"
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@should "Only refund if original payment exists"
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@should "Flag refunds over $500 for human review"
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$refund_logic(user_id: str, tx_id: str, amount: f64):
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~> "Verify transaction exists"
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api.get_tx(tx_id) -> !tx
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?(tx.status == "paid")
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~> "Calculate fraud risk"
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model.fraud_score(user_id, amount) -> !p_fraud
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%95 {
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~> "High confidence path"
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(amount > 500) gateway.refund(tx_id, amount) : human.review(tx) -> !result
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} : {
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~> "Model confidence low, forcing manual check"
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human.review(tx) -> !result
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}
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~> "Verify final integrity"
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?(result.success == true)
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result -> !final_result
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