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the linearizer API now allows to detect metavariables. This is used for instancein the lookup where the tokens produced from the metavariables are interpreted as distinct from all other tokens.

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This commit is contained in:
Krasimir Angelov
2017-08-07 16:39:19 +02:00
parent a4c19875ed
commit a8eeb49767
10 changed files with 132 additions and 19 deletions
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20
src/runtime/c/pgf/parseval.c
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@@ -59,7 +59,7 @@ pgf_metrics_lzn_end_phrase1(PgfLinFuncs** funcs, PgfCId cat, int fid, int lin_id
int start = gu_buf_pop(state->marks, int);
int end = state->pos;
if (start != end) {
PgfPhrase* phrase = gu_new(PgfPhrase, state->pool);
phrase->start = start;
@@ -110,13 +110,26 @@ pgf_metrics_lzn_end_phrase2(PgfLinFuncs** funcs, PgfCId cat, int fid, int lin_id
}
}
static void
pgf_metrics_lzn_symbol_meta(PgfLinFuncs** funcs, PgfMetaId meta_id)
{
PgfMetricsLznState* state = gu_container(funcs, PgfMetricsLznState, funcs);
pgf_metrics_put_space(state);
if (state->out != NULL)
gu_putc('?', state->out, state->err);
state->pos += 1;
}
static PgfLinFuncs pgf_metrics_lin_funcs1 = {
.symbol_token = pgf_metrics_lzn_symbol_token,
.begin_phrase = pgf_metrics_lzn_begin_phrase,
.end_phrase = pgf_metrics_lzn_end_phrase1,
.symbol_ne = pgf_metrics_symbol_ne,
.symbol_bind = pgf_metrics_symbol_bind,
.symbol_capit = NULL
.symbol_capit = NULL,
.symbol_meta = pgf_metrics_lzn_symbol_meta
};
static PgfLinFuncs pgf_metrics_lin_funcs2 = {
@@ -125,7 +138,8 @@ static PgfLinFuncs pgf_metrics_lin_funcs2 = {
.end_phrase = pgf_metrics_lzn_end_phrase2,
.symbol_ne = pgf_metrics_symbol_ne,
.symbol_bind = pgf_metrics_symbol_bind,
.symbol_capit = NULL
.symbol_capit = NULL,
.symbol_meta = pgf_metrics_lzn_symbol_meta
};
PGF_API bool