From 0231dc141e6aff819bcc13dd78416414130e178d Mon Sep 17 00:00:00 2001
From: "Sven M. Hallberg" <pesco@khjk.org>
Date: Thu, 3 Sep 2015 19:18:07 +0200
Subject: [PATCH] add iterative API to LL(k) backend
---
src/backends/llk.c | 35 ++++++++++++++++++++++++++++++++++-
1 file changed, 34 insertions(+), 1 deletion(-)
diff --git a/src/backends/llk.c b/src/backends/llk.c
index af755944..2b8d35b1 100644
--- a/src/backends/llk.c
+++ b/src/backends/llk.c
@@ -461,12 +461,45 @@ HParseResult *h_llk_parse(HAllocator* mm__, const HParser* parser, HInputStream*
return llk_parse_finish_(mm__, s);
}
+void h_llk_parse_start(HSuspendedParser *s)
+{
+ s->backend_state = llk_parse_start_(s->mm__, s->parser);
+}
+
+void h_llk_parse_chunk(HSuspendedParser *s, HInputStream *input)
+{
+ HLLkState *state = s->backend_state;
+
+ state->seq = llk_parse_chunk_(state, s->parser, input, false);
+}
+
+HParseResult *h_llk_parse_finish(HSuspendedParser *s)
+{
+ HLLkState *state = s->backend_state;
+ HInputStream empty = {
+ .index = 0,
+ .bit_offset = 0,
+ .overrun = 0,
+ .endianness = s->endianness,
+ .length = 0,
+ .input = NULL
+ };
+
+ // signal end of input (no-op parse already done)
+ state->seq = llk_parse_chunk_(state, s->parser, &empty, true);
+
+ return llk_parse_finish_(s->mm__, s->backend_state);
+}
HParserBackendVTable h__llk_backend_vtable = {
.compile = h_llk_compile,
.parse = h_llk_parse,
- .free = h_llk_free
+ .free = h_llk_free,
+
+ .parse_start = h_llk_parse_start,
+ .parse_chunk = h_llk_parse_chunk,
+ .parse_finish = h_llk_parse_finish
};
--
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