From 3756806674da909ec6dc10ad25862b592792604e Mon Sep 17 00:00:00 2001 From: Jo-Philipp Wich Date: Wed, 23 Dec 2020 20:54:05 +0100 Subject: treewide: rewrite ucode interpreter Replace the former AST walking interpreter implementation with a single pass bytecode compiler and a corresponding virtual machine. The rewrite lays the groundwork for a couple of improvements with will be subsequently implemented: - Ability to precompile ucode sources into binary byte code - Strippable debug information - Reduced runtime memory usage Signed-off-by: Jo-Philipp Wich --- source.h | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 source.h (limited to 'source.h') diff --git a/source.h b/source.h new file mode 100644 index 0000000..4ca01b3 --- /dev/null +++ b/source.h @@ -0,0 +1,44 @@ +/* + * Copyright (C) 2021 Jo-Philipp Wich + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef __SOURCE_H_ +#define __SOURCE_H_ + +#include +#include +#include + +#include "util.h" + + +uc_declare_vector(uc_lineinfo, uint8_t); + +typedef struct { + char *filename, *buffer; + FILE *fp; + size_t usecount, off; + uc_lineinfo lineinfo; +} uc_source; + +uc_source *uc_source_new_file(const char *path); +uc_source *uc_source_new_buffer(const char *name, char *buf, size_t len); + +size_t uc_source_get_line(uc_source *source, size_t *offset); + +uc_source *uc_source_get(uc_source *source); +void uc_source_put(uc_source *source); + +#endif /* __SOURCE_H_ */ -- cgit v1.2.3