void UnwrappedLineParser::parsePPDirective() {
assert(FormatTok->Tok.is(tok::hash) && "'#' expected");
ScopedMacroState MacroState(*Line, Tokens, FormatTok, StructuralError);
nextToken();
if (!FormatTok->Tok.getIdentifierInfo()) {
parsePPUnknown();
return;
}
switch (FormatTok->Tok.getIdentifierInfo()->getPPKeywordID()) {
case tok::pp_define:
parsePPDefine();
return;
case tok::pp_if:
parsePPIf(/*IfDef=*/false);
break;
case tok::pp_ifdef:
case tok::pp_ifndef:
parsePPIf(/*IfDef=*/true);
break;
case tok::pp_else:
parsePPElse();
break;
case tok::pp_elif:
parsePPElIf();
break;
case tok::pp_endif:
parsePPEndIf();
break;
default:
parsePPUnknown();
break;
}
}
void UnwrappedLineParser::parsePPIf(bool IfDef) {
nextToken();
bool IsLiteralFalse = (FormatTok->Tok.isLiteral() &&
StringRef(FormatTok->Tok.getLiteralData(),
FormatTok->Tok.getLength()) == "0") ||
FormatTok->Tok.is(tok::kw_false);
conditionalCompilationStart(!IfDef && IsLiteralFalse);
parsePPUnknown();
}
void UnwrappedLineParser::parsePPIf() {
nextToken();
if ((FormatTok->Tok.isLiteral() &&
StringRef(FormatTok->Tok.getLiteralData(), FormatTok->Tok.getLength()) ==
"0") ||
FormatTok->Tok.is(tok::kw_false)) {
PPStack.push_back(PP_Unreachable);
} else {
pushPPConditional();
}
parsePPUnknown();
}
void UnwrappedLineParser::parsePPEndIf() {
assert(PPBranchLevel < (int)PPLevelBranchIndex.size());
if (PPBranchLevel >= 0 && !PPChainBranchIndex.empty()) {
if (PPChainBranchIndex.top() + 1 > PPLevelBranchCount[PPBranchLevel]) {
PPLevelBranchCount[PPBranchLevel] = PPChainBranchIndex.top() + 1;
}
}
--PPBranchLevel;
if (!PPChainBranchIndex.empty())
PPChainBranchIndex.pop();
if (!PPStack.empty())
PPStack.pop_back();
parsePPUnknown();
}
void UnwrappedLineParser::parsePPElse() {
if (!PPStack.empty())
PPStack.pop_back();
assert(PPBranchLevel < (int)PPLevelBranchIndex.size());
if (!PPChainBranchIndex.empty())
++PPChainBranchIndex.top();
if (PPBranchLevel >= 0 && !PPChainBranchIndex.empty() &&
PPLevelBranchIndex[PPBranchLevel] != PPChainBranchIndex.top()) {
PPStack.push_back(PP_Unreachable);
} else {
pushPPConditional();
}
parsePPUnknown();
}
void UnwrappedLineParser::parsePPDefine() {
nextToken();
if (FormatTok.Tok.getKind() != tok::identifier) {
parsePPUnknown();
return;
}
nextToken();
if (FormatTok.Tok.getKind() == tok::l_paren) {
parseParens();
}
addUnwrappedLine();
Line.Level = 1;
parseFile();
}
void UnwrappedLineParser::parsePPDirective() {
assert(FormatTok.Tok.is(tok::hash) && "'#' expected");
ScopedMacroState MacroState(Line, Tokens, FormatTok);
nextToken();
if (FormatTok.Tok.getIdentifierInfo() == NULL) {
addUnwrappedLine();
return;
}
switch (FormatTok.Tok.getIdentifierInfo()->getPPKeywordID()) {
case tok::pp_define:
parsePPDefine();
break;
default:
parsePPUnknown();
break;
}
}
void UnwrappedLineParser::parsePPIf(bool IfDef) {
++PPBranchLevel;
assert(PPBranchLevel >= 0 && PPBranchLevel <= (int)PPLevelBranchIndex.size());
if (PPBranchLevel == (int)PPLevelBranchIndex.size()) {
PPLevelBranchIndex.push_back(0);
PPLevelBranchCount.push_back(0);
}
PPChainBranchIndex.push(0);
nextToken();
bool IsLiteralFalse = (FormatTok->Tok.isLiteral() &&
StringRef(FormatTok->Tok.getLiteralData(),
FormatTok->Tok.getLength()) == "0") ||
FormatTok->Tok.is(tok::kw_false);
if ((!IfDef && IsLiteralFalse) || PPLevelBranchIndex[PPBranchLevel] > 0) {
PPStack.push_back(PP_Unreachable);
} else {
pushPPConditional();
}
parsePPUnknown();
}
void UnwrappedLineParser::parsePPDefine() {
nextToken();
if (FormatTok->Tok.getKind() != tok::identifier) {
parsePPUnknown();
return;
}
nextToken();
if (FormatTok->Tok.getKind() == tok::l_paren &&
FormatTok->WhitespaceRange.getBegin() ==
FormatTok->WhitespaceRange.getEnd()) {
parseParens();
}
addUnwrappedLine();
Line->Level = 1;
// Errors during a preprocessor directive can only affect the layout of the
// preprocessor directive, and thus we ignore them. An alternative approach
// would be to use the same approach we use on the file level (no
// re-indentation if there was a structural error) within the macro
// definition.
parseFile();
}
void UnwrappedLineParser::parsePPEndIf() {
conditionalCompilationEnd();
parsePPUnknown();
}
void UnwrappedLineParser::parsePPElse() {
conditionalCompilationAlternative();
parsePPUnknown();
}
void UnwrappedLineParser::parsePPEndIf() {
if (!PPStack.empty())
PPStack.pop_back();
parsePPUnknown();
}
void UnwrappedLineParser::parsePPElse() {
if (!PPStack.empty())
PPStack.pop_back();
pushPPConditional();
parsePPUnknown();
}
void UnwrappedLineParser::parsePPIfdef() {
pushPPConditional();
parsePPUnknown();
}
