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libpgf: a new implementation for literals which also allows custom literals. the same mechanism is now used for the metavariables

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kr.angelov
2012-03-12 14:25:51 +00:00
parent c1b2246fa9
commit 2bf3f22fac
10 changed files with 728 additions and 311 deletions
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26
src/runtime/c/pgf/linearize.c
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@@ -27,6 +27,7 @@
#include <gu/string.h>
#include <gu/assert.h>
#include <pgf/expr.h>
#include <pgf/literals.h>
typedef GuStringMap PgfLinInfer;
typedef GuSeq PgfProdSeq;
@@ -338,29 +339,6 @@ finish:
return ret;
}
PgfCCat*
pgf_literal_cat(PgfLzn* lzn, PgfLiteral lit)
{
int fid;
switch (gu_variant_tag(lit)) {
case PGF_LITERAL_STR:
fid = -1;
break;
case PGF_LITERAL_INT:
fid = -2;
break;
case PGF_LITERAL_FLT:
fid = -3;
break;
default:
gu_impossible();
return NULL;
}
return gu_map_get(lzn->concr->ccats, &fid, PgfCCat*);
}
static PgfCCat*
pgf_lzn_infer(PgfLzn* lzn, PgfExpr expr, GuPool* pool, PgfCncTree* ctree_out)
{
@@ -380,7 +358,7 @@ pgf_lzn_infer(PgfLzn* lzn, PgfExpr expr, GuPool* pool, PgfCncTree* ctree_out)
PgfCncTreeLit,
.lit = elit->lit);
}
ret = pgf_literal_cat(lzn, elit->lit);
ret = pgf_literal_cat(lzn->concr, elit->lit);
}
default:
// XXX: should we do something here?