Mercurial > vim
view src/xdiff/xemit.c @ 23547:7f09cfa9ac4a v8.2.2316
patch 8.2.2316: Vim9: cannot list a lambda function
Commit: https://github.com/vim/vim/commit/b657198cb30765468451d7f68fce49b5b4000c5d
Author: Bram Moolenaar <Bram@vim.org>
Date: Fri Jan 8 22:24:19 2021 +0100
patch 8.2.2316: Vim9: cannot list a lambda function
Problem: Vim9: cannot list a lambda function.
Solution: Support the <lambda>9 notation, like :disassemble. (closes https://github.com/vim/vim/issues/7634)
author | Bram Moolenaar <Bram@vim.org> |
---|---|
date | Fri, 08 Jan 2021 22:30:06 +0100 |
parents | 3be01cf0a632 |
children | d5142d87f898 |
line wrap: on
line source
/* * LibXDiff by Davide Libenzi ( File Differential Library ) * Copyright (C) 2003 Davide Libenzi * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, see * <http://www.gnu.org/licenses/>. * * Davide Libenzi <davidel@xmailserver.org> * */ #include "xinclude.h" static long xdl_get_rec(xdfile_t *xdf, long ri, char const **rec) { *rec = xdf->recs[ri]->ptr; return xdf->recs[ri]->size; } static int xdl_emit_record(xdfile_t *xdf, long ri, char const *pre, xdemitcb_t *ecb) { long size, psize = (long)strlen(pre); char const *rec; size = xdl_get_rec(xdf, ri, &rec); if (xdl_emit_diffrec(rec, size, pre, psize, ecb) < 0) { return -1; } return 0; } /* * Starting at the passed change atom, find the latest change atom to be included * inside the differential hunk according to the specified configuration. * Also advance xscr if the first changes must be discarded. */ xdchange_t *xdl_get_hunk(xdchange_t **xscr, xdemitconf_t const *xecfg) { xdchange_t *xch, *xchp, *lxch; long max_common = 2 * xecfg->ctxlen + xecfg->interhunkctxlen; long max_ignorable = xecfg->ctxlen; unsigned long ignored = 0; // number of ignored blank lines // remove ignorable changes that are too far before other changes for (xchp = *xscr; xchp && xchp->ignore; xchp = xchp->next) { xch = xchp->next; if (xch == NULL || xch->i1 - (xchp->i1 + xchp->chg1) >= max_ignorable) *xscr = xch; } if (*xscr == NULL) return NULL; lxch = *xscr; for (xchp = *xscr, xch = xchp->next; xch; xchp = xch, xch = xch->next) { long distance = xch->i1 - (xchp->i1 + xchp->chg1); if (distance > max_common) break; if (distance < max_ignorable && (!xch->ignore || lxch == xchp)) { lxch = xch; ignored = 0; } else if (distance < max_ignorable && xch->ignore) { ignored += xch->chg2; } else if (lxch != xchp && xch->i1 + (long)ignored - (lxch->i1 + lxch->chg1) > max_common) { break; } else if (!xch->ignore) { lxch = xch; ignored = 0; } else { ignored += xch->chg2; } } return lxch; } #if 0 static long def_ff(const char *rec, long len, char *buf, long sz, void *priv UNUSED) { if (len > 0 && (isalpha((unsigned char)*rec) || // identifier? *rec == '_' || // also identifier? *rec == '$')) { // identifiers from VMS and other esoterico if (len > sz) len = sz; while (0 < len && isspace((unsigned char)rec[len - 1])) len--; memcpy(buf, rec, len); return len; } return -1; } #endif #if 0 static long match_func_rec(xdfile_t *xdf, xdemitconf_t const *xecfg, long ri, char *buf, long sz) { const char *rec; long len = xdl_get_rec(xdf, ri, &rec); if (!xecfg->find_func) return def_ff(rec, len, buf, sz, xecfg->find_func_priv); return xecfg->find_func(rec, len, buf, sz, xecfg->find_func_priv); } #endif #if 0 static int is_func_rec(xdfile_t *xdf, xdemitconf_t const *xecfg, long ri) { char dummy[1]; return match_func_rec(xdf, xecfg, ri, dummy, sizeof(dummy)) >= 0; } #endif struct func_line { long len; char buf[80]; }; #if 0 static long get_func_line(xdfenv_t *xe, xdemitconf_t const *xecfg, struct func_line *func_line, long start, long limit) { long l, size, step = (start > limit) ? -1 : 1; char *buf, dummy[1]; buf = func_line ? func_line->buf : dummy; size = func_line ? sizeof(func_line->buf) : sizeof(dummy); for (l = start; l != limit && 0 <= l && l < xe->xdf1.nrec; l += step) { long len = match_func_rec(&xe->xdf1, xecfg, l, buf, size); if (len >= 0) { if (func_line) func_line->len = len; return l; } } return -1; } #endif #if 0 static int is_empty_rec(xdfile_t *xdf, long ri) { const char *rec; long len = xdl_get_rec(xdf, ri, &rec); while (len > 0 && XDL_ISSPACE(*rec)) { rec++; len--; } return !len; } #endif int xdl_emit_diff(xdfenv_t *xe, xdchange_t *xscr, xdemitcb_t *ecb, xdemitconf_t const *xecfg) { long s1, s2, e1, e2, lctx; xdchange_t *xch, *xche; #if 0 long funclineprev = -1; #endif struct func_line func_line; func_line.len = 0; for (xch = xscr; xch; xch = xche->next) { xche = xdl_get_hunk(&xch, xecfg); if (!xch) break; s1 = XDL_MAX(xch->i1 - xecfg->ctxlen, 0); s2 = XDL_MAX(xch->i2 - xecfg->ctxlen, 0); #if 0 if (xecfg->flags & XDL_EMIT_FUNCCONTEXT) { long fs1, i1 = xch->i1; // Appended chunk? if (i1 >= xe->xdf1.nrec) { long i2 = xch->i2; /* * We don't need additional context if * a whole function was added. */ while (i2 < xe->xdf2.nrec) { if (is_func_rec(&xe->xdf2, xecfg, i2)) goto post_context_calculation; i2++; } /* * Otherwise get more context from the * pre-image. */ i1 = xe->xdf1.nrec - 1; } fs1 = get_func_line(xe, xecfg, NULL, i1, -1); while (fs1 > 0 && !is_empty_rec(&xe->xdf1, fs1 - 1) && !is_func_rec(&xe->xdf1, xecfg, fs1 - 1)) fs1--; if (fs1 < 0) fs1 = 0; if (fs1 < s1) { s2 -= s1 - fs1; s1 = fs1; } } post_context_calculation: #endif lctx = xecfg->ctxlen; lctx = XDL_MIN(lctx, xe->xdf1.nrec - (xche->i1 + xche->chg1)); lctx = XDL_MIN(lctx, xe->xdf2.nrec - (xche->i2 + xche->chg2)); e1 = xche->i1 + xche->chg1 + lctx; e2 = xche->i2 + xche->chg2 + lctx; #if 0 if (xecfg->flags & XDL_EMIT_FUNCCONTEXT) { long fe1 = get_func_line(xe, xecfg, NULL, xche->i1 + xche->chg1, xe->xdf1.nrec); while (fe1 > 0 && is_empty_rec(&xe->xdf1, fe1 - 1)) fe1--; if (fe1 < 0) fe1 = xe->xdf1.nrec; if (fe1 > e1) { e2 += fe1 - e1; e1 = fe1; } /* * Overlap with next change? Then include it * in the current hunk and start over to find * its new end. */ if (xche->next) { long l = XDL_MIN(xche->next->i1, xe->xdf1.nrec - 1); if (l - xecfg->ctxlen <= e1 || get_func_line(xe, xecfg, NULL, l, e1) < 0) { xche = xche->next; goto post_context_calculation; } } } #endif /* * Emit current hunk header. */ #if 0 if (xecfg->flags & XDL_EMIT_FUNCNAMES) { get_func_line(xe, xecfg, &func_line, s1 - 1, funclineprev); funclineprev = s1 - 1; } #endif if (xdl_emit_hunk_hdr(s1 + 1, e1 - s1, s2 + 1, e2 - s2, func_line.buf, func_line.len, ecb) < 0) return -1; /* * Emit pre-context. */ for (; s2 < xch->i2; s2++) if (xdl_emit_record(&xe->xdf2, s2, " ", ecb) < 0) return -1; for (s1 = xch->i1, s2 = xch->i2;; xch = xch->next) { /* * Merge previous with current change atom. */ for (; s1 < xch->i1 && s2 < xch->i2; s1++, s2++) if (xdl_emit_record(&xe->xdf2, s2, " ", ecb) < 0) return -1; /* * Removes lines from the first file. */ for (s1 = xch->i1; s1 < xch->i1 + xch->chg1; s1++) if (xdl_emit_record(&xe->xdf1, s1, "-", ecb) < 0) return -1; /* * Adds lines from the second file. */ for (s2 = xch->i2; s2 < xch->i2 + xch->chg2; s2++) if (xdl_emit_record(&xe->xdf2, s2, "+", ecb) < 0) return -1; if (xch == xche) break; s1 = xch->i1 + xch->chg1; s2 = xch->i2 + xch->chg2; } /* * Emit post-context. */ for (s2 = xche->i2 + xche->chg2; s2 < e2; s2++) if (xdl_emit_record(&xe->xdf2, s2, " ", ecb) < 0) return -1; } return 0; }