mirror of
https://github.com/reactos/wine.git
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296 lines
7.8 KiB
Plaintext
296 lines
7.8 KiB
Plaintext
%{
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/*
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* Help Viewer
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*
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* Copyright 1996 Ulrich Schmid
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* Copyright 2002 Eric Pouech
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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%}
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%option nounput interactive 8bit
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%x quote
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%{
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#include <assert.h>
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#include "macro.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(winhelp);
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static LPCSTR macroptr;
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static LPSTR strptr;
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static int quote_stack[32];
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static unsigned int quote_stk_idx = 0;
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struct lexret yylval;
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#define YY_INPUT(buf,result,max_size)\
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if ((result = *macroptr ? 1 : 0)) buf[0] = *macroptr++;
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%}
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%%
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[-+]?[0-9]+ yylval.integer = strtol(yytext, NULL, 10); return INTEGER;
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[-+]?0[xX][0-9a-f]+ yylval.integer = strtol(yytext, NULL, 16); return INTEGER;
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[a-zA-Z][_0-9a-zA-Z]* return MACRO_Lookup(yytext, &yylval);
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\` |
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\" |
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\' |
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<quote>\` |
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<quote>\" |
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<quote>\' {
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if (quote_stk_idx == 0 ||
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(yytext[0] == '\"' && quote_stack[quote_stk_idx - 1] != '\"') ||
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(yytext[0] == '`'))
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{
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/* opening a new one */
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if (quote_stk_idx == 0)
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{
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strptr = HeapAlloc(GetProcessHeap(), 0, strlen(macroptr) + 1);
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yylval.string = strptr;
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BEGIN(quote);
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}
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else *strptr++ = yytext[0];
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quote_stack[quote_stk_idx++] = yytext[0];
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assert(quote_stk_idx < sizeof(quote_stack) / sizeof(quote_stack[0]));
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}
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else
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{
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if (yytext[0] == '`') assert(0);
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/* close the current quote */
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if (--quote_stk_idx == 0)
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{
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BEGIN INITIAL;
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*strptr++ = '\0';
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return STRING;
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}
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else *strptr++ = yytext[0];
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}
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}
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<quote>. *strptr++ = yytext[0];
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<quote>\\. *strptr++ = yytext[1];
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<quote><<EOF>> return 0;
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" "
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. return yytext[0];
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%%
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#if 0
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/* all code for testing macros */
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#include "winhelp.h"
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static CHAR szTestMacro[256];
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static LRESULT CALLBACK MACRO_TestDialogProc(HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam)
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{
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if (msg == WM_COMMAND && wParam == IDOK)
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{
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GetDlgItemText(hDlg, 99, szTestMacro, sizeof(szTestMacro));
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EndDialog(hDlg, IDOK);
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return TRUE;
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}
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return FALSE;
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}
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void macro_test(void)
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{
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WNDPROC lpfnDlg = MakeProcInstance(MACRO_TestDialogProc, Globals.hInstance);
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DialogBox(Globals.hInstance, STRING_DIALOG_TEST, Globals.active_win->hMainWnd, (DLGPROC)lpfnDlg);
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FreeProcInstance(lpfnDlg);
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macro = szTestMacro;
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}
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#endif
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/* small helper function for debug messages */
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static const char* ts(int t)
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{
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static char c[2] = {0,0};
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switch (t)
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{
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case EMPTY: return "EMPTY";
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case VOID_FUNCTION: return "VOID_FUNCTION";
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case BOOL_FUNCTION: return "BOOL_FUNCTION";
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case INTEGER: return "INTEGER";
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case STRING: return "STRING";
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case IDENTIFIER: return "IDENTIFIER";
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default: c[0] = (char)t; return c;
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}
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}
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static int MACRO_CallBoolFunc(FARPROC fn, const char* args, void** ret);
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/******************************************************************
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* MACRO_CheckArgs
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*
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* checks number of arguments against prototype, and stores arguments on
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* stack pa for later call
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* returns -1 on error, otherwise the number of pushed parameters
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*/
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static int MACRO_CheckArgs(void* pa[], unsigned max, const char* args)
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{
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int t;
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unsigned int len = 0, idx = 0;
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WINE_TRACE("Checking %s\n", args);
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if (yylex() != '(') {WINE_WARN("missing (\n");return -1;}
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if (*args)
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{
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len = strlen(args);
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for (;;)
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{
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t = yylex();
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WINE_TRACE("Got %s <=> %c\n", ts(t), *args);
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switch (*args)
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{
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case 'S':
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if (t != STRING)
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{WINE_WARN("missing S\n");return -1;}
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pa[idx] = (void*)yylval.string;
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break;
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case 'U':
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case 'I':
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if (t != INTEGER)
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{WINE_WARN("missing U\n");return -1;}
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pa[idx] = (void*)yylval.integer;
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break;
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case 'B':
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if (t != BOOL_FUNCTION)
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{WINE_WARN("missing B\n");return -1;}
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if (MACRO_CallBoolFunc(yylval.function, yylval.proto, &pa[idx]) == 0)
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return -1;
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break;
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default:
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WINE_WARN("unexpected %s while args is %c\n", ts(t), *args);
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return -1;
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}
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idx++;
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if (*++args == '\0') break;
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t = yylex();
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if (t == ')') goto CheckArgs_end;
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if (t != ',') {WINE_WARN("missing ,\n");return -1;}
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if (idx >= max) {WINE_FIXME("stack overflow (%d)\n", max);return -1;}
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}
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}
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if (yylex() != ')') {WINE_WARN("missing )\n");return -1;}
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CheckArgs_end:
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while (len > idx) pa[--len] = NULL;
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return idx;
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}
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/******************************************************************
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* MACRO_CallBoolFunc
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*
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* Invokes boolean function fn, which arguments are defined by args
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* stores bool result into ret
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*/
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static int MACRO_CallBoolFunc(FARPROC fn, const char* args, void** ret)
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{
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void* pa[2];
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int idx = MACRO_CheckArgs(pa, sizeof(pa)/sizeof(pa[0]), args);
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if (idx < 0) return 0;
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if (!fn) return 1;
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WINE_TRACE("calling with %u pmts\n", idx);
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switch (strlen(args))
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{
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case 0: *ret = (void*)(fn)(); break;
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case 1: *ret = (void*)(fn)(pa[0]); break;
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default: WINE_FIXME("NIY\n");
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}
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return 1;
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}
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/******************************************************************
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* MACRO_CallVoidFunc
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*
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*
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*/
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static int MACRO_CallVoidFunc(FARPROC fn, const char* args)
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{
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void* pa[6];
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int idx = MACRO_CheckArgs(pa, sizeof(pa)/sizeof(pa[0]), args);
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if (idx < 0) return 0;
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if (!fn) return 1;
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WINE_TRACE("calling %p with %u pmts\n", fn, idx);
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switch (strlen(args))
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{
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case 0: (fn)(); break;
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case 1: (fn)(pa[0]); break;
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case 2: (fn)(pa[0],pa[1]); break;
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case 3: (fn)(pa[0],pa[1],pa[2]); break;
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case 4: (fn)(pa[0],pa[1],pa[2],pa[3]); break;
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case 5: (fn)(pa[0],pa[1],pa[2],pa[3],pa[4]); break;
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case 6: (fn)(pa[0],pa[1],pa[2],pa[3],pa[4],pa[5]); break;
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default: WINE_FIXME("NIY\n");
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}
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return 1;
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}
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BOOL MACRO_ExecuteMacro(LPCSTR macro)
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{
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int t;
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WINE_TRACE("%s\n", wine_dbgstr_a(macro));
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macroptr = macro;
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while ((t = yylex()) != EMPTY)
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{
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switch (t)
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{
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case VOID_FUNCTION:
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WINE_TRACE("got type void func(%s)\n", yylval.proto);
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MACRO_CallVoidFunc(yylval.function, yylval.proto);
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break;
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case BOOL_FUNCTION:
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WINE_WARN("got type bool func(%s)\n", yylval.proto);
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break;
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default:
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WINE_WARN("got unexpected type %s\n", ts(t));
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return 0;
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}
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switch (t = yylex())
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{
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case EMPTY: return 1;
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case ';': break;
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default: return 0;
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}
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}
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HeapFree(GetProcessHeap(), 0, strptr);
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strptr = NULL;
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quote_stk_idx = 0;
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return 1;
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}
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#ifndef yywrap
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int yywrap(void) { return 1; }
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#endif
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