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Add experimental --pipe-filter to filter all Verilog input.

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This commit is contained in:
Wilson Snyder
2010-01-20 07:15:51 -05:00
parent 28eb5b9bc4
commit 6196cf09ff
25 changed files with 555 additions and 42 deletions
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src/V3PreProc.cpp
+15 -10
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@@ -162,7 +162,7 @@ private:
bool commentTokenMatch(string& cmdr, const char* strg);
string trimWhitespace(const string& strg, bool trailing);
void unputString(const string& strg);
void unputString(const string& strg, bool first=false);
void parsingOn() {
m_off--;
@@ -173,7 +173,7 @@ private:
public:
// METHODS, called from upper level shell
virtual void openFile(FileLine* fl, const string& filename);
virtual void openFile(FileLine* fl, V3InFilter* filterp, const string& filename);
virtual bool isEof() const { return (m_lexp==NULL); }
virtual string getline();
virtual void insertUnreadback(const string& text) { m_lineCmt += text; }
@@ -402,14 +402,16 @@ const char* V3PreProcImp::tokenName(int tok) {
}
}
void V3PreProcImp::unputString(const string& strg) {
void V3PreProcImp::unputString(const string& strg, bool first) {
// We used to just m_lexp->unputString(strg.c_str());
// However this can lead to "flex scanner push-back overflow"
// so instead we scan from a temporary buffer, then on EOF return.
// This is also faster than the old scheme, amazingly.
if (m_lexp->m_bufferStack.empty() || m_lexp->m_bufferStack.top()!=m_lexp->currentBuffer()) {
fileline()->v3fatalSrc("bufferStack missing current buffer; will return incorrectly");
// Hard to debug lost text as won't know till much later
if (!first) { // Else the initial creation
if (m_lexp->m_bufferStack.empty() || m_lexp->m_bufferStack.top()!=m_lexp->currentBuffer()) {
fileline()->v3fatalSrc("bufferStack missing current buffer; will return incorrectly");
// Hard to debug lost text as won't know till much later
}
}
m_lexp->scanBytes(strg);
}
@@ -576,15 +578,17 @@ string V3PreProcImp::defineSubst(V3DefineRef* refp) {
//**********************************************************************
// Parser routines
void V3PreProcImp::openFile(FileLine* fl, const string& filename) {
void V3PreProcImp::openFile(FileLine* fl, V3InFilter* filterp, const string& filename) {
// Open a new file, possibly overriding the current one which is active.
if (fl) {
m_fileline = new FileLine(fl);
}
V3File::addSrcDepend(filename);
FILE* fp = fopen (filename.c_str(), "r");
if (!fp) {
string wholefile;
bool ok = filterp->readWholefile(filename, wholefile/*ref*/);
if (!ok) {
fileline()->v3error("File not found: "+filename+"\n");
return;
}
@@ -601,7 +605,7 @@ void V3PreProcImp::openFile(FileLine* fl, const string& filename) {
addLineComment(0);
}
m_lexp = new V3PreLex (fp);
m_lexp = new V3PreLex();
m_lexp->m_keepComments = keepComments();
m_lexp->m_pedantic = pedantic();
m_lexp->m_curFilelinep = new FileLine(filename, 1);
@@ -609,6 +613,7 @@ void V3PreProcImp::openFile(FileLine* fl, const string& filename) {
addLineComment(1); // Enter
yy_flex_debug = (debug()>4)?1:0;
unputString(wholefile,true);
}
void V3PreProcImp::insertUnreadbackAtBol(const string& text) {