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 char* Line)
68 /* Create and return a new line info. Ref count will be 1. */
74 /* Skip leading spaces in Line */
75 while (IsBlank (*Line)) {
79 /* Calculate the length of the line */
83 LI = xmalloc (sizeof (LineInfo) + Len);
85 /* Initialize the fields */
88 LI->LineNum = LineNum;
90 /* Copy the line, replacing tabs by spaces in the given line since tabs
91 * will give rather arbitrary results when used in the output later, and
92 * if we do it here, we won't need another copy later.
105 /* Add the terminator */
108 /* Return the new struct */
114 static void FreeLineInfo (LineInfo* LI)
115 /* Free a LineInfo structure */
122 LineInfo* UseLineInfo (LineInfo* LI)
123 /* Increase the reference count of the given line info and return it. */
132 void ReleaseLineInfo (LineInfo* LI)
133 /* Release a reference to the given line info, free the structure if the
134 * reference count drops to zero.
137 CHECK (LI && LI->RefCount > 0);
138 if (--LI->RefCount == 0) {
139 /* No more references, free it */
146 LineInfo* GetCurLineInfo (void)
147 /* Return a pointer to the current line info. The reference count is NOT
148 * increased, use UseLineInfo for that purpose.
156 void UpdateLineInfo (struct IFile* F, unsigned LineNum, const char* Line)
157 /* Update the line info - called if a new line is read */
159 /* If a current line info exists, release it */
161 ReleaseLineInfo (CurLineInfo);
164 /* If we have intermixed assembly switched off, use an empty line instead
165 * of the supplied one to save some memory.
171 /* Create a new line info */
172 CurLineInfo = NewLineInfo (F, LineNum, Line);
177 const char* GetInputName (const LineInfo* LI)
178 /* Return the file name from a line info */
180 PRECONDITION (LI != 0);
181 return LI->InputFile->Name;
186 unsigned GetInputLine (const LineInfo* LI)
187 /* Return the line number from a line info */
189 PRECONDITION (LI != 0);