1 /*****************************************************************************/
5 /* Source file line info structure */
9 /* (C) 2001 Ullrich von Bassewitz */
11 /* D-70597 Stuttgart */
12 /* EMail: uz@musoftware.de */
15 /* This software is provided 'as-is', without any expressed or implied */
16 /* warranty. In no event will the authors be held liable for any damages */
17 /* arising from the use of this software. */
19 /* Permission is granted to anyone to use this software for any purpose, */
20 /* including commercial applications, and to alter it and redistribute it */
21 /* freely, subject to the following restrictions: */
23 /* 1. The origin of this software must not be misrepresented; you must not */
24 /* claim that you wrote the original software. If you use this software */
25 /* in a product, an acknowledgment in the product documentation would be */
26 /* appreciated but is not required. */
27 /* 2. Altered source versions must be plainly marked as such, and must not */
28 /* be misrepresented as being the original software. */
29 /* 3. This notice may not be removed or altered from any source */
32 /*****************************************************************************/
50 /*****************************************************************************/
52 /*****************************************************************************/
56 /* Global pointer to line information for the current line */
57 static LineInfo* CurLineInfo = 0;
61 /*****************************************************************************/
63 /*****************************************************************************/
67 static LineInfo* NewLineInfo (struct IFile* F, unsigned LineNum, const StrBuf* Line)
68 /* Create and return a new line info. Ref count will be 1. */
75 /* Get the length of the line and a pointer to the line buffer */
76 Len = SB_GetLen (Line);
77 S = SB_GetConstBuf (Line);
79 /* Skip leading spaces in Line */
80 while (Len > 0 && IsBlank (*S)) {
85 /* Allocate memory for the line info and the input line */
86 LI = xmalloc (sizeof (LineInfo) + Len);
88 /* Initialize the fields */
91 LI->LineNum = LineNum;
93 /* Copy the line, replacing tabs by spaces in the given line since tabs
94 * will give rather arbitrary results when used in the output later, and
95 * if we do it here, we won't need another copy later.
108 /* Add the terminator */
111 /* Return the new struct */
117 static void FreeLineInfo (LineInfo* LI)
118 /* Free a LineInfo structure */
125 LineInfo* UseLineInfo (LineInfo* LI)
126 /* Increase the reference count of the given line info and return it. */
135 void ReleaseLineInfo (LineInfo* LI)
136 /* Release a reference to the given line info, free the structure if the
137 * reference count drops to zero.
140 CHECK (LI && LI->RefCount > 0);
141 if (--LI->RefCount == 0) {
142 /* No more references, free it */
149 LineInfo* GetCurLineInfo (void)
150 /* Return a pointer to the current line info. The reference count is NOT
151 * increased, use UseLineInfo for that purpose.
159 void UpdateLineInfo (struct IFile* F, unsigned LineNum, const StrBuf* Line)
160 /* Update the line info - called if a new line is read */
162 /* If a current line info exists, release it */
164 ReleaseLineInfo (CurLineInfo);
167 /* If we have intermixed assembly switched off, use an empty line instead
168 * of the supplied one to save some memory.
174 /* Create a new line info */
175 CurLineInfo = NewLineInfo (F, LineNum, Line);
180 const char* GetInputName (const LineInfo* LI)
181 /* Return the file name from a line info */
183 PRECONDITION (LI != 0);
184 return GetInputFile (LI->InputFile);
189 unsigned GetInputLine (const LineInfo* LI)
190 /* Return the line number from a line info */
192 PRECONDITION (LI != 0);