mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
92 lines
2.6 KiB
C++
92 lines
2.6 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: set ts=8 sts=4 et sw=4 tw=99:
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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static const struct {
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const char *name;
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int length;
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} pairs[] = {
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#define OPDEF(op,val,name,token,length,nuses,ndefs,format) \
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{ #op, length } ,
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#include "jsopcode.tbl"
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#undef OPDEF
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};
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int
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main(int argc, char **argv)
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{
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FILE *fp;
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size_t maxNameWidth, i, nameWidth, tabStop;
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int lengthGap;
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static const char prefix[] = "#define ";
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static const char suffix[] = "_LENGTH";
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static const size_t tabWidth = 8;
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static const size_t prefixWidth = sizeof(prefix) - 1;
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static const size_t suffixWidth = sizeof(suffix) - 1;
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if (argc != 2) {
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fputs("Bad usage\n", stderr);
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return EXIT_FAILURE;
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}
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fp = fopen(argv[1], "w");
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if (!fp) {
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perror("fopen");
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return EXIT_FAILURE;
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}
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fputs("#ifndef JSAUTOOPLEN_H___\n", fp);
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fputs("#define JSAUTOOPLEN_H___\n", fp);
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fputs("/*\n"
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" * Automatically generated header with JS opcode length constants.\n"
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" *\n"
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" * Do not edit it, alter jsopcode.tbl instead.\n"
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" */\n",
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fp);
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/*
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* Print
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*
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* #define name_LENGTH length
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*
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* with all length values aligned on the same column. The column is at the
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* second character position after a tab-stop with the first position
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* reserved for the minus sign of variable-length opcodes.
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*/
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maxNameWidth = 0;
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for (i = 0; i != sizeof pairs / sizeof pairs[0]; ++i) {
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nameWidth = strlen(pairs[i].name);
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if (maxNameWidth < nameWidth)
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maxNameWidth = nameWidth;
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}
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tabStop = prefixWidth + maxNameWidth + suffixWidth + 1;
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tabStop = (tabStop + tabWidth - 1) / tabWidth * tabWidth;
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for (i = 0; i != sizeof pairs / sizeof pairs[0]; ++i) {
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lengthGap = (int) (tabStop - prefixWidth - strlen(pairs[i].name) -
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suffixWidth);
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fprintf(fp, "%s%s%s%*c%2d\n",
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prefix, pairs[i].name, suffix, lengthGap, ' ',
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pairs[i].length);
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if (ferror(fp)) {
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perror("fclose");
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exit(EXIT_FAILURE);
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}
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}
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fputs("#endif // JSAUTOOPLEN_H___\n", fp);
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if (fclose(fp)) {
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perror("fclose");
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return EXIT_FAILURE;
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}
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return EXIT_SUCCESS;
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}
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