mirror of
https://github.com/cc65/cc65.git
synced 2024-12-25 17:29:50 +00:00
Fixed handling adjacent macro expansions that should not concatenate.
Example: F()G /* expansion results of F() shall not be concatenated with G */
This commit is contained in:
acqn
parent
c7ff416ce9
commit
9f8bfb859c
@ -97,8 +97,16 @@
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/* Current PP if stack */
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static PPIfStack* PPStack;
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/* Struct for rescan */
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typedef struct RescanInputStack RescanInputStack;
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struct RescanInputStack {
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Collection Lines;
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Collection LastTokLens;
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StrBuf* PrevTok;
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};
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/* Input backup for rescan */
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static Collection* CurRescanStack;
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static RescanInputStack* CurRescanStack;
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/* Intermediate input buffers */
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static StrBuf* PLine; /* Buffer for macro expansion */
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@ -168,6 +176,16 @@ static MacroExp* InitMacroExp (MacroExp* E);
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static void DoneMacroExp (MacroExp* E);
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/* Cleanup after use of a MacroExp structure */
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static int CheckPastePPTok (StrBuf* Target, unsigned TokLen, char Next);
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/* Return 1 if the last pp-tokens from Source could be concatenated with any
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** characters from Appended to form a new valid one.
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*/
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static void LazyCheckNextPPTok (const StrBuf* Prev, unsigned LastTokLen);
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/* Memorize the previous pp-token(s) to later check for potential pp-token
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** concatenation.
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*/
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/*****************************************************************************/
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@ -705,22 +723,69 @@ static void DoneMacroExp (MacroExp* E)
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/*****************************************************************************/
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/* Code */
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/* Rescan input stack */
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/*****************************************************************************/
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static void PushRescanLine (RescanInputStack* RIS, StrBuf* L, unsigned LastTokLen)
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/* Push an input line to the rescan input stack */
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{
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CollAppend (&RIS->Lines, L);
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/* Abuse the pointer to store an unsigned */
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CollAppend (&RIS->LastTokLens, (void*)(uintptr_t)LastTokLen);
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}
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static void PopRescanLine (void)
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/* Pop and free a rescan input line if it reaches the end */
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{
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if (CurC == '\0' && CollCount (CurRescanStack) > 1) {
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FreeStrBuf (CollPop (CurRescanStack));
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InitLine (CollLast (CurRescanStack));
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if (CurC == '\0' && CollCount (&CurRescanStack->Lines) > 1) {
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FreeStrBuf (CollPop (&CurRescanStack->Lines));
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InitLine (CollLast (&CurRescanStack->Lines));
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CollPop (&CurRescanStack->LastTokLens);
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}
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}
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static void InitRescanInputStack (RescanInputStack* RIS)
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/* Init a RescanInputStack struct */
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{
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InitCollection (&RIS->Lines);
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InitCollection (&RIS->LastTokLens);
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RIS->PrevTok = 0;
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}
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static void DoneRescanInputStack (RescanInputStack* RIS)
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/* Free a RescanInputStack struct. RIS must be non-NULL. */
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{
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/* Free pushed input lines */
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while (CollCount (&RIS->Lines) > 1) {
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FreeStrBuf (CollPop (&RIS->Lines));
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}
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/* Switch back to the old input stack */
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InitLine (CollPop (&RIS->Lines));
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/* Free any remaining pp-tokens used for concatenation check */
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FreeStrBuf (RIS->PrevTok);
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/* Done */
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DoneCollection (&RIS->Lines);
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DoneCollection (&RIS->LastTokLens);
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}
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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static int MacName (char* Ident)
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/* Get a macro symbol name into Ident. If we have an error, print a
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** diagnostic message and clear the line.
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@ -881,31 +946,7 @@ static int SkipWhitespace (int SkipLines)
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int Skipped = 0;
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int NewLine = 0;
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if (CurRescanStack != 0 &&
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CollCount (CurRescanStack) > 1 &&
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Line == CollConstLast (CurRescanStack)) {
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/* Rescanning */
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while (1) {
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if (IsSpace (CurC)) {
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NextChar ();
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Skipped = 1;
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} else if (CurC == '/' && NextC == '*') {
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OldStyleComment ();
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Skipped = 1;
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} else if (IS_Get (&Standard) >= STD_C99 && CurC == '/' && NextC == '/') {
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NewStyleComment ();
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Skipped = 1;
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} else if (CurC == '\0') {
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/* End of line, switch back input */
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PopRescanLine ();
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break;
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} else {
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/* No more white space */
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break;
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}
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}
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}
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/* Rescanning */
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while (1) {
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if (IsSpace (CurC)) {
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NextChar ();
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@ -916,14 +957,51 @@ static int SkipWhitespace (int SkipLines)
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} else if (CurC == '/' && NextC == '/') {
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NewStyleComment ();
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Skipped = 1;
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} else if (CurC == '\0' && SkipLines) {
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/* End of line, read next */
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if (NextLine () != 0) {
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++PendingNewLines;
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NewLine = 1;
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Skipped = 0;
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} else if (CurC == '\0') {
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/* End of line */
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if (CurRescanStack != 0 &&
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CollCount (&CurRescanStack->Lines) > 1 &&
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Line == CollLast (&CurRescanStack->Lines)) {
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unsigned LastTokLen = (unsigned)(uintptr_t)CollLast (&CurRescanStack->LastTokLens);
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/* Check for potentially merged tokens */
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if (Skipped == 0 && LastTokLen != 0) {
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/* Get the following input */
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StrBuf* Next = CollAtUnchecked (&CurRescanStack->Lines,
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CollCount (&CurRescanStack->Lines) - 2);
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char C = SB_Peek (Next);
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/* We cannot check right now if the next pp-token may be a
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** macro.
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*/
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if (IsIdent (C)) {
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/* Memorize the previous pp-token and check it later */
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LazyCheckNextPPTok (Line, LastTokLen);
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} else if (C != '\0' && !IsSpace (C)) {
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/* If the two adjacent pp-tokens could be put together
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** to form a new one, we have to separate them with an
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** additional space.
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*/
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Skipped = CheckPastePPTok (Line, LastTokLen, SB_Peek (Next));
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}
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}
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/* switch back to previous input */
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PopRescanLine ();
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} else if (SkipLines) {
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/* Read next line */
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if (NextLine () != 0) {
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++PendingNewLines;
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NewLine = 1;
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Skipped = 0;
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} else {
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/* End of input */
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break;
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}
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} else {
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/* End of input */
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break;
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}
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} else {
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@ -931,6 +1009,7 @@ static int SkipWhitespace (int SkipLines)
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break;
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}
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}
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return Skipped != 0 ? Skipped : -(NewLine != 0);
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}
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@ -1131,6 +1210,68 @@ static int GetPunc (char* S)
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static int CheckPastePPTok (StrBuf* Source, unsigned TokLen, char Next)
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/* Return 1 if the last pp-tokens from Source could be concatenated with any
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** characters from Appended to form a new valid one.
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*/
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{
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char C;
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unsigned NewTokLen;
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StrBuf* OldSource;
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StrBuf Src = AUTO_STRBUF_INITIALIZER;
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StrBuf Buf = AUTO_STRBUF_INITIALIZER;
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if (TokLen == 0 || IsBlank (SB_LookAtLast (Source))) {
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return 0;
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}
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PRECONDITION (SB_GetLen (Source) >= TokLen);
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/* Special casing "..", "/ /" and "/ *" that are not pp-tokens but still
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** need be separated.
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*/
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C = SB_LookAt (Source, SB_GetLen (Source) - TokLen);
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if ((C == '.' && Next == '.') || (C == '/' && (Next == '/' || Next == '*'))) {
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return 1;
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}
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SB_CopyBuf (&Src, SB_GetConstBuf (Source) + SB_GetLen (Source) - TokLen, TokLen);
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SB_AppendChar (&Src, Next);
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SB_Reset (&Src);
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OldSource = InitLine (&Src);
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if (IsPPNumber (CurC, NextC)) {
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/* PP-number */
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CopyPPNumber (&Buf);
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} else if (IsQuotedString ()) {
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/* Quoted string */
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CopyQuotedString (&Buf);
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} else {
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ident Ident;
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if (GetPunc (Ident)) {
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/* Punctuator */
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SB_CopyStr (&Buf, Ident);
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} else if (IsSym (Ident)) {
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/* Identifier */
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SB_CopyStr (&Buf, Ident);
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}
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}
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NewTokLen = SB_GetLen (&Buf);
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SB_Done (&Buf);
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SB_Done (&Src);
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/* Restore old source */
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InitLine (OldSource);
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/* Return if concatenation succeeded */
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return NewTokLen != TokLen;
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}
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static int TryPastePPTok (StrBuf* Target,
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StrBuf* Appended,
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unsigned FirstTokLen,
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@ -1150,10 +1291,18 @@ static int TryPastePPTok (StrBuf* Target,
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return 1;
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}
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/* Since we need to concatenate the token sequences, remove the
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** last whitespace that was added to target, since it must come
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** from the input.
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*/
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if (IsBlank (SB_LookAtLast (Target))) {
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SB_Drop (Target, 1);
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}
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PRECONDITION (SB_GetLen (Target) >= FirstTokLen &&
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SB_GetLen (Appended) >= SecondTokLen);
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/* Special casing "..", "//" and "/*" */
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/* Special casing "..", "/ /" and "/ *" */
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if (FirstTokLen == 1) {
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char C = SB_LookAt (Target, SB_GetLen (Target) - FirstTokLen);
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char N = SB_LookAt (Appended, 0);
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@ -1163,7 +1312,7 @@ static int TryPastePPTok (StrBuf* Target,
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if ((C == '.' && N == '.') || (C == '/' && (N == '/' || N == '*'))) {
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SB_AppendChar (Target, ' ');
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SB_Append (Target, Appended);
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PPWarning ("Pasting formed '%c%c', an invalid preprocessing token", C, N);
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PPWarning ("Pasting formed \"%c%c\", an invalid preprocessing token", C, N);
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return 0;
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}
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@ -1206,7 +1355,7 @@ static int TryPastePPTok (StrBuf* Target,
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NextChar ();
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}
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SB_Terminate (&Buf);
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PPWarning ("Pasting formed '%s', an invalid preprocessing token",
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PPWarning ("Pasting formed \"%s\", an invalid preprocessing token",
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SB_GetConstBuf (&Buf));
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/* Add a space between the tokens to avoid problems in rescanning */
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@ -1242,6 +1391,85 @@ static int TryPastePPTok (StrBuf* Target,
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static void SeparatePPTok (StrBuf* Target, char Next)
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/* Add a space to target if the previous pp-token could be concatenated with
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** the following character.
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*/
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{
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if (CurRescanStack->PrevTok != 0) {
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unsigned Len = SB_GetLen (CurRescanStack->PrevTok) - SB_GetIndex (CurRescanStack->PrevTok);
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/* Check for pp-token pasting */
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if (CheckPastePPTok (CurRescanStack->PrevTok, Len, Next)) {
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SB_AppendChar (Target, ' ');
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}
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FreeStrBuf (CurRescanStack->PrevTok);
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CurRescanStack->PrevTok = 0;
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}
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}
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static void LazyCheckNextPPTok (const StrBuf* Prev, unsigned LastTokLen)
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/* Memorize the previous pp-token(s) to later check for potential pp-token
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** concatenation.
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*/
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{
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char C;
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int CheckEllipsis = 0;
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unsigned NewIndex = SB_GetLen (Prev) - LastTokLen;
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PRECONDITION (SB_GetLen (Prev) >= LastTokLen);
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/* Check for some special cases */
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C = SB_AtUnchecked (Prev, NewIndex);
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/* We may exclude certain punctuators for speedups. As newer C standards
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** could add more punctuators such as "[[", "]]", "::" and so on, this
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** check might need changes accordingly.
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*/
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if (C == '[' || C == ']' || C == '(' || C == ')' ||
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C == '{' || C == '}' || C == '~' || C == '?' ||
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C == ':' || C == ';' || C == ',') {
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/* These punctuators cannot be concatenated */
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return;
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}
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/* Special check for .. */
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if (NewIndex > 0 &&
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C == '.' &&
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SB_AtUnchecked (Prev, NewIndex - 1) == '.') {
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/* Save the preceding '.' as well */
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CheckEllipsis = 1;
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}
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if (CurRescanStack->PrevTok != 0) {
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unsigned OldIndex = SB_GetIndex (CurRescanStack->PrevTok);
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unsigned OldLen = SB_GetLen (CurRescanStack->PrevTok) - OldIndex;
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unsigned NewLen = SB_GetLen (Prev) - NewIndex;
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if (OldLen == NewLen &&
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strncmp (SB_GetConstBuf (CurRescanStack->PrevTok) + OldIndex - CheckEllipsis,
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SB_GetConstBuf (Prev) + NewIndex - CheckEllipsis,
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OldLen + CheckEllipsis) == 0) {
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/* Same pp-token, keep using the old one */
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} else {
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/* Logic error */
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SB_Terminate (CurRescanStack->PrevTok);
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Internal ("Unchecked pp-token concatenation: \"%s\"",
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SB_GetConstBuf (CurRescanStack->PrevTok) + SB_GetIndex (CurRescanStack->PrevTok));
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}
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} else {
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/* Memorize the current line */
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CurRescanStack->PrevTok = NewStrBuf ();
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SB_CopyBuf (CurRescanStack->PrevTok,
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SB_GetConstBuf (Prev) + NewIndex - CheckEllipsis,
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LastTokLen + CheckEllipsis);
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SB_Reset (CurRescanStack->PrevTok);
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}
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}
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static int CheckExtraTokens (const char* Name)
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/* Check for extra tokens at the end of the directive. Return 1 if there are
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** extra tokens, otherwise 0.
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@ -1315,7 +1543,7 @@ static unsigned ReadMacroArgs (unsigned NameIdx, MacroExp* E, const Macro* M, in
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((CurC == ',' && !ME_IsNextArgVariadic (E, M)) || CurC == ')')) {
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/* End of actual argument. Remove whitespace from the end. */
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while (IsSpace (SB_LookAtLast (&Arg.Tokens))) {
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while (IsBlank (SB_LookAtLast (&Arg.Tokens))) {
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SB_Drop (&Arg.Tokens, 1);
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}
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@ -1467,9 +1695,10 @@ static unsigned ReadMacroArgs (unsigned NameIdx, MacroExp* E, const Macro* M, in
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static unsigned SubstMacroArgs (unsigned NameIdx, StrBuf* Target, MacroExp* E, Macro* M, unsigned IdentCount)
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static unsigned SubstMacroArgs (unsigned NameIdx, StrBuf* Target, MacroExp* E, Macro* M, unsigned* IdentCount)
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/* Argument substitution according to ISO/IEC 9899:1999 (E), 6.10.3.1ff.
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** Return the count of identifiers and right parentheses in the result.
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** Return the length of the last pp-token in the result and output the count
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** of identifiers and right parentheses in the result to *IdentCount.
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*/
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{
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unsigned Idx = NameIdx;
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@ -1495,7 +1724,7 @@ static unsigned SubstMacroArgs (unsigned NameIdx, StrBuf* Target, MacroExp* E, M
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** required by the standard but just to match up with other major C
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** compilers.
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*/
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ME_HandleSemiNestedMacro (NameIdx, NameIdx + IdentCount, E);
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ME_HandleSemiNestedMacro (NameIdx, NameIdx + *IdentCount, E);
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/* Substitution loop */
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while (CurC != '\0') {
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@ -1518,6 +1747,11 @@ static unsigned SubstMacroArgs (unsigned NameIdx, StrBuf* Target, MacroExp* E, M
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/* Get the corresponding actual argument */
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const MacroExp* A = ME_GetOriginalArg (E, ParamIdx);
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/* Separate with a white space if necessary */
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if (CheckPastePPTok (Target, TokLen, SB_Peek (&A->Tokens))) {
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SB_AppendChar (Target, ' ');
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}
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/* For now we need no placemarkers */
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SB_Append (Target, &A->Tokens);
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@ -1533,6 +1767,11 @@ static unsigned SubstMacroArgs (unsigned NameIdx, StrBuf* Target, MacroExp* E, M
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/* Get the corresponding macro-replaced argument */
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const MacroExp* A = ME_GetReplacedArg (E, ParamIdx);
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/* Separate with a white space if necessary */
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if (CheckPastePPTok (Target, TokLen, SB_Peek (&A->Tokens))) {
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SB_AppendChar (Target, ' ');
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}
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/* Append the replaced string */
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SB_Append (Target, &A->Tokens);
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@ -1568,7 +1807,7 @@ static unsigned SubstMacroArgs (unsigned NameIdx, StrBuf* Target, MacroExp* E, M
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}
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/* Squeeze and add the skipped whitespace back for consistency */
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if (HaveSpace) {
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if (HaveSpace && !IsBlank (SB_LookAtLast (Target))) {
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SB_AppendChar (Target, ' ');
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}
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@ -1577,20 +1816,11 @@ static unsigned SubstMacroArgs (unsigned NameIdx, StrBuf* Target, MacroExp* E, M
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} else if (CurC == '#' && NextC == '#') {
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/* ## operator. */
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/* ## operator */
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NextChar ();
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NextChar ();
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SkipWhitespace (0);
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/* Since we need to concatenate the token sequences, remove the
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** last whitespace that was added to target, since it must come
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** from the input.
|
||||
*/
|
||||
if (IsBlank (SB_LookAtLast (Target))) {
|
||||
SB_Drop (Target, 1);
|
||||
HaveSpace = 0;
|
||||
}
|
||||
|
||||
/* If the next token is an identifier which is a macro argument,
|
||||
** replace it, otherwise just add it.
|
||||
*/
|
||||
@ -1661,7 +1891,7 @@ static unsigned SubstMacroArgs (unsigned NameIdx, StrBuf* Target, MacroExp* E, M
|
||||
|
||||
/* Keep the whitespace for consistency */
|
||||
HaveSpace = SkipWhitespace (0);
|
||||
if (HaveSpace) {
|
||||
if (HaveSpace && !IsBlank (SB_LookAtLast (Target))) {
|
||||
SB_AppendChar (Target, ' ');
|
||||
}
|
||||
|
||||
@ -1720,23 +1950,24 @@ static unsigned SubstMacroArgs (unsigned NameIdx, StrBuf* Target, MacroExp* E, M
|
||||
** '/' characters would be parsed wrongly as division operators.
|
||||
*/
|
||||
HaveSpace = SkipWhitespace (0);
|
||||
if (HaveSpace) {
|
||||
SB_AppendChar (&Buf, ' ');
|
||||
}
|
||||
|
||||
if (NeedPaste) {
|
||||
unsigned Len = SB_GetLen (&Buf);
|
||||
|
||||
/* Concatenate pp-tokens */
|
||||
if (TryPastePPTok (Target, &Buf, TokLen, Len)) {
|
||||
TokLen += Len - HaveSpace;
|
||||
TokLen += Len;
|
||||
} else {
|
||||
TokLen = Len - HaveSpace;
|
||||
TokLen = Len;
|
||||
}
|
||||
} else {
|
||||
/* Just append the token */
|
||||
SB_Append (Target, &Buf);
|
||||
TokLen = SB_GetLen (&Buf) - HaveSpace;
|
||||
TokLen = SB_GetLen (&Buf);
|
||||
}
|
||||
|
||||
if (HaveSpace && !IsBlank (SB_LookAtLast (Target))) {
|
||||
SB_AppendChar (Target, ' ');
|
||||
}
|
||||
|
||||
}
|
||||
@ -1745,26 +1976,36 @@ static unsigned SubstMacroArgs (unsigned NameIdx, StrBuf* Target, MacroExp* E, M
|
||||
SB_Done (&Buf);
|
||||
|
||||
/* Remove the macro name itself together with the arguments (if any) */
|
||||
ME_RemoveToken (Idx, 1 + IdentCount, E);
|
||||
ME_RemoveToken (Idx, 1 + *IdentCount, E);
|
||||
|
||||
/* Hide this macro for the whole result of this expansion */
|
||||
ME_HideMacro (NameIdx, Idx - NameIdx, E, M);
|
||||
|
||||
/* Switch back the input */
|
||||
UseInputStack (OldInputStack);
|
||||
InitLine (OldSource);
|
||||
SB_SetIndex (&M->Replacement, OldIndex);
|
||||
|
||||
/* Return the count of substituted identifiers and right parentheses */
|
||||
return Idx - NameIdx;
|
||||
/* Set the count of identifiers and right parentheses in the result */
|
||||
*IdentCount = Idx - NameIdx;
|
||||
|
||||
/* Return the length of the last pp-token */
|
||||
return TokLen;
|
||||
}
|
||||
|
||||
|
||||
|
||||
static unsigned ExpandMacro (unsigned Idx, StrBuf* Target, MacroExp* E, Macro* M, int MultiLine)
|
||||
/* Expand a macro into Target. Return the count of identifiers and right
|
||||
** parentheses in the result of the expansion.
|
||||
/* Expand a macro into Target. Return the length of the last pp-token in the
|
||||
** result of the expansion.
|
||||
*/
|
||||
{
|
||||
/* Count of identifiers and right parentheses */
|
||||
unsigned Count = 0;
|
||||
unsigned Count = 0; /* Count of identifiers and right parentheses */
|
||||
unsigned Len = 0; /* Length of the last pp-token in the result */
|
||||
|
||||
/* Disable previous pp-token spacing checking */
|
||||
StrBuf* PrevTok = CurRescanStack->PrevTok;
|
||||
CurRescanStack->PrevTok = 0;
|
||||
|
||||
#if DEV_CC65_DEBUG
|
||||
static unsigned V = 0;
|
||||
@ -1779,7 +2020,7 @@ static unsigned ExpandMacro (unsigned Idx, StrBuf* Target, MacroExp* E, Macro* M
|
||||
|
||||
if ((E->Flags & MES_ERROR) == 0) {
|
||||
/* Replace macro parameters with arguments handling the # and ## operators */
|
||||
Count = SubstMacroArgs (Idx, Target, E, M, Count);
|
||||
Len = SubstMacroArgs (Idx, Target, E, M, &Count);
|
||||
} else {
|
||||
SB_CopyStr (Target, M->Name);
|
||||
}
|
||||
@ -1789,15 +2030,17 @@ static unsigned ExpandMacro (unsigned Idx, StrBuf* Target, MacroExp* E, Macro* M
|
||||
ME_ClearArgs (E);
|
||||
}
|
||||
|
||||
/* Hide this macro for the whole result of this expansion */
|
||||
ME_HideMacro (Idx, Count, E, M);
|
||||
|
||||
#if DEV_CC65_DEBUG
|
||||
printf ("Expanded (%u) %s to %d ident(s) at %u: %s\n",
|
||||
V--, M->Name, Count, Idx, SB_GetConstBuf (Target));
|
||||
#endif
|
||||
|
||||
return Count;
|
||||
/* Reenable previous pp-token concatenation checking */
|
||||
FreeStrBuf (CurRescanStack->PrevTok);
|
||||
CurRescanStack->PrevTok = PrevTok;
|
||||
|
||||
/* Return the length of the last pp-token in the expansion result */
|
||||
return Len;
|
||||
}
|
||||
|
||||
|
||||
@ -1811,13 +2054,13 @@ static unsigned ReplaceMacros (StrBuf* Source, StrBuf* Target, MacroExp* E, unsi
|
||||
StrBuf* TmpTarget = NewStrBuf ();
|
||||
|
||||
/* Remember the current input and switch to Source */
|
||||
StrBuf* OldSource = InitLine (Source);
|
||||
Collection RescanStack = AUTO_COLLECTION_INITIALIZER;
|
||||
Collection* OldRescanStack = CurRescanStack;
|
||||
|
||||
StrBuf* OldSource = InitLine (Source);
|
||||
RescanInputStack RescanStack;
|
||||
RescanInputStack* OldRescanStack = CurRescanStack;
|
||||
|
||||
InitRescanInputStack (&RescanStack);
|
||||
PushRescanLine (&RescanStack, Line, 0);
|
||||
CurRescanStack = &RescanStack;
|
||||
CollAppend (CurRescanStack, Line);
|
||||
|
||||
/* Loop substituting macros */
|
||||
while (CurC != '\0') {
|
||||
@ -1839,6 +2082,10 @@ static unsigned ReplaceMacros (StrBuf* Source, StrBuf* Target, MacroExp* E, unsi
|
||||
NextChar ();
|
||||
SkipWhitespace (0);
|
||||
}
|
||||
|
||||
/* Add a space to separate the result if necessary */
|
||||
SeparatePPTok (Target, '0');
|
||||
|
||||
if (IsSym (Ident)) {
|
||||
/* Eat the identifier */
|
||||
ME_RemoveToken (Count, 1, E);
|
||||
@ -1864,7 +2111,8 @@ static unsigned ReplaceMacros (StrBuf* Source, StrBuf* Target, MacroExp* E, unsi
|
||||
|
||||
/* Check if it's an expandable macro */
|
||||
if (M != 0 && ME_CanExpand (Count, E, M)) {
|
||||
int MultiLine = (ModeFlags & MSM_MULTILINE) != 0;
|
||||
int MultiLine = (ModeFlags & MSM_MULTILINE) != 0;
|
||||
unsigned LastTokLen;
|
||||
|
||||
/* Check if this is a function-like macro */
|
||||
if (M->ParamCount >= 0) {
|
||||
@ -1878,7 +2126,8 @@ static unsigned ReplaceMacros (StrBuf* Source, StrBuf* Target, MacroExp* E, unsi
|
||||
/* No expansion */
|
||||
++Count;
|
||||
|
||||
/* Just keep the macro name */
|
||||
/* Add a space to separate the macro name if necessary */
|
||||
SeparatePPTok (Target, M->Name[0]);
|
||||
SB_AppendStr (Target, M->Name);
|
||||
|
||||
/* Keep tracking pp-token lengths */
|
||||
@ -1929,10 +2178,10 @@ static unsigned ReplaceMacros (StrBuf* Source, StrBuf* Target, MacroExp* E, unsi
|
||||
*/
|
||||
if (MultiLine && OLine == 0) {
|
||||
OLine = TmpTarget;
|
||||
ExpandMacro (Count, TmpTarget, E, M, MultiLine);
|
||||
LastTokLen = ExpandMacro (Count, TmpTarget, E, M, MultiLine);
|
||||
OLine = 0;
|
||||
} else {
|
||||
ExpandMacro (Count, TmpTarget, E, M, MultiLine);
|
||||
LastTokLen = ExpandMacro (Count, TmpTarget, E, M, MultiLine);
|
||||
}
|
||||
|
||||
/* Check for errors in expansion */
|
||||
@ -1947,7 +2196,7 @@ static unsigned ReplaceMacros (StrBuf* Source, StrBuf* Target, MacroExp* E, unsi
|
||||
/* Start rescanning from the temporary result */
|
||||
SB_Reset (TmpTarget);
|
||||
InitLine (TmpTarget);
|
||||
CollAppend (CurRescanStack, TmpTarget);
|
||||
PushRescanLine (CurRescanStack, TmpTarget, LastTokLen);
|
||||
|
||||
/* Switch the buffers */
|
||||
TmpTarget = NewStrBuf ();
|
||||
@ -1961,6 +2210,9 @@ static unsigned ReplaceMacros (StrBuf* Source, StrBuf* Target, MacroExp* E, unsi
|
||||
|
||||
/* An unexpandable identifier. Keep it. */
|
||||
++Count;
|
||||
|
||||
/* Add a space to separate the macro name if necessary */
|
||||
SeparatePPTok (Target, Ident[0]);
|
||||
SB_AppendStr (Target, Ident);
|
||||
|
||||
/* Keep tracking pp-token lengths */
|
||||
@ -1973,7 +2225,12 @@ static unsigned ReplaceMacros (StrBuf* Source, StrBuf* Target, MacroExp* E, unsi
|
||||
}
|
||||
}
|
||||
} else {
|
||||
unsigned LastLen = SB_GetLen (Target);
|
||||
unsigned LastLen;
|
||||
|
||||
/* Add a space to separate the macro name if necessary */
|
||||
SeparatePPTok (Target, CurC);
|
||||
|
||||
LastLen = SB_GetLen (Target);
|
||||
|
||||
if ((ModeFlags & MSM_TOK_HEADER) != 0 && (CurC == '<' || CurC == '\"')) {
|
||||
CopyHeaderNameToken (Target);
|
||||
@ -1994,6 +2251,14 @@ static unsigned ReplaceMacros (StrBuf* Source, StrBuf* Target, MacroExp* E, unsi
|
||||
++Count;
|
||||
}
|
||||
SB_AppendStr (Target, Ident);
|
||||
|
||||
/* If an identifier follows immediately, it could be a macro
|
||||
** expanded later that occasionally need a space to separate.
|
||||
*/
|
||||
if (IsIdent (CurC)) {
|
||||
/* Memorize the previous pp-token and check it later */
|
||||
LazyCheckNextPPTok (Target, strlen (Ident));
|
||||
}
|
||||
} else {
|
||||
SB_AppendChar (Target, CurC);
|
||||
NextChar ();
|
||||
@ -2014,7 +2279,7 @@ Loop:
|
||||
/* Switch back to the previous input stream if we have finished
|
||||
** rescanning the current one.
|
||||
*/
|
||||
if (CurC == '\0' && CollCount (CurRescanStack) > 1) {
|
||||
if (CurC == '\0' && CollCount (&CurRescanStack->Lines) > 1) {
|
||||
/* Check for rescan sequence end and pp-token pasting */
|
||||
Skipped = SkipWhitespace (0) || Skipped;
|
||||
}
|
||||
@ -2038,18 +2303,12 @@ Loop:
|
||||
|
||||
/* Sanity check */
|
||||
if ((E->Flags & MES_ERROR) == 0) {
|
||||
CHECK (CollCount (CurRescanStack) == 1);
|
||||
CHECK (CollCount (&CurRescanStack->Lines) == 1);
|
||||
}
|
||||
|
||||
/* Switch back to the old input stack */
|
||||
while (CollCount (CurRescanStack) > 1) {
|
||||
FreeStrBuf (CollPop (CurRescanStack));
|
||||
}
|
||||
CurRescanStack = OldRescanStack;
|
||||
|
||||
/* Done with the current input stack */
|
||||
CHECK (CollCount (&RescanStack) == 1);
|
||||
DoneCollection (&RescanStack);
|
||||
DoneRescanInputStack (CurRescanStack);
|
||||
CurRescanStack = OldRescanStack;
|
||||
|
||||
/* Switch back the input */
|
||||
InitLine (OldSource);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user