68 lines
1.7 KiB
Rust
68 lines
1.7 KiB
Rust
/*! Implementation of proto! extension.
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This is frequently called the pipe compiler. It handles code such as...
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~~~
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proto! pingpong {
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ping: send {
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ping -> pong
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}
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pong: recv {
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pong -> ping
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}
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}
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~~~
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There are several components:
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* The parser (libsyntax/ext/pipes/parse_proto.rs)
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* Responsible for building an AST from a protocol specification.
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* The checker (libsyntax/ext/pipes/check.rs)
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* Basic correctness checking for protocols (i.e. no undefined states, etc.)
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* The analyzer (libsyntax/ext/pipes/liveness.rs)
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* Determines whether the protocol is bounded or unbounded.
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* The compiler (libsynatx/ext/pipes/pipec.rs)
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* Generates a Rust AST from the protocol AST and the results of analysis.
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There is more documentation in each of the files referenced above.
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FIXME (#3072) - This is still incomplete.
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*/
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import codemap::span;
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import ext::base::ext_ctxt;
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import ast::tt_delim;
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import parse::lexer::{new_tt_reader, reader};
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import parse::parser::{parser, SOURCE_FILE};
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import parse::common::parser_common;
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import pipes::parse_proto::proto_parser;
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import pipes::proto::{visit, protocol};
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fn expand_proto(cx: ext_ctxt, _sp: span, id: ast::ident,
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tt: ~[ast::token_tree]) -> base::mac_result
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{
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let sess = cx.parse_sess();
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let cfg = cx.cfg();
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let tt_rdr = new_tt_reader(cx.parse_sess().span_diagnostic,
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cx.parse_sess().interner, none, tt);
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let rdr = tt_rdr as reader;
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let rust_parser = parser(sess, cfg, rdr.dup(), SOURCE_FILE);
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let proto = rust_parser.parse_proto(id);
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// check for errors
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visit(proto, cx);
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// do analysis
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liveness::analyze(proto, cx);
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// compile
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base::mr_item(proto.compile(cx))
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}
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