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af1adf80ad
* Porting * Update some tests that depend on AST-print output * iterating on GOCC -> PGPG * iterating * iterating * iterating * iterating * iterating * Modify expout files that need only AST-print-syntax updates * iterating * iterating * iterating * iterating * iterating * iterating * iterating * iterating * iterating * iterating * iterating * sync test cases from mlr-6.17.0, except AST-prints ... * sync test cases from mlr-6.17.0, except AST-prints ... * Fix lashed emit for $* and @* * Fix --1 and ++1 chained unary ops * Emit with function callsite * test cases * dot operator * M_PI and M_E * Iterating on lashed emit cases * error-wording differences * rm some should-fail files * Fix issue with leading semicolon * trailing comma in func params; most AST-print deltas * error-wording delta * fix unset all * AST-print deltas * go mod tidy: forced `go 1.25` to `go 1.25.0` * Depend on PGPG v1.0.0 * Fix Windows CI failure * Remove cmd/experiments/dsl_parser * GOCC -> PGPG * neaten * Fix regex issue found in doc gen |
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| .. | ||
| gen | ||
| lexer | ||
| parser | ||
| doc.go | ||
| mlr.bnf | ||
| README.md | ||
This directory contains a single source file, mlr.bnf, which is the lexical/semantic grammar file
for the Miller put/filter DSL (domain-specific language) using the PGPG
framework. (In a classical Lex/Yacc framework, there would be
separate mlr.l and mlr.y files; using PGPG, there is a single mlr.bnf file.)
All subdirectories of pkg/parsing/ are autogen code created by PGPG's processing of mlr.bnf.
They are nonetheless committed to source control, since running PGPG takes a bit longer than the go build does, and the BNF file doesn't often change. (BNF is for Backus-Naur Form which is the
phrasing of the grammar file that PGPG support.)
Run tools/build-dsl from the repo root to regenerate the lexer and parser.