Fix a couple of bugs, add some new cool stuff.
1. Fix a todo in Parser::ParseTag, to recover better. On code like
that in test/Sema/decl-invalid.c it causes us to return a single
error instead of multiple.
2. Fix an error in Sema::ParseDeclarator, where it would crash if the
declarator didn't have an identifier. Instead, diagnose the problem.
3. Start adding infrastructure to track the range of locations covered
by a declspec or declarator. This is mostly implemented for declspec,
but could be improved, it is missing for declarator.
Thanks to Neil for pointing out this crash.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@40482 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/AST/Decl.cpp b/AST/Decl.cpp
new file mode 100644
index 0000000..f4a346f
--- /dev/null
+++ b/AST/Decl.cpp
@@ -0,0 +1,161 @@
+//===--- Decl.cpp - Declaration AST Node Implementation -------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by Chris Lattner and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the Decl class and subclasses.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/AST/Decl.h"
+#include "clang/Lex/IdentifierTable.h"
+using namespace clang;
+
+// temporary statistics gathering
+static unsigned nFuncs = 0;
+static unsigned nBlockVars = 0;
+static unsigned nFileVars = 0;
+static unsigned nParmVars = 0;
+static unsigned nSUC = 0;
+static unsigned nEnumConst = 0;
+static unsigned nEnumDecls = 0;
+static unsigned nTypedef = 0;
+static unsigned nFieldDecls = 0;
+static bool StatSwitch = false;
+
+bool Decl::CollectingStats(bool enable) {
+ if (enable) StatSwitch = true;
+ return StatSwitch;
+}
+
+void Decl::PrintStats() {
+ fprintf(stderr, "*** Decl Stats:\n");
+ fprintf(stderr, " %d decls total.\n",
+ int(nFuncs+nBlockVars+nFileVars+nParmVars+nFieldDecls+nSUC+
+ nEnumDecls+nEnumConst+nTypedef));
+ fprintf(stderr, " %d function decls, %d each (%d bytes)\n",
+ nFuncs, (int)sizeof(FunctionDecl), int(nFuncs*sizeof(FunctionDecl)));
+ fprintf(stderr, " %d block variable decls, %d each (%d bytes)\n",
+ nBlockVars, (int)sizeof(BlockVarDecl),
+ int(nBlockVars*sizeof(BlockVarDecl)));
+ fprintf(stderr, " %d file variable decls, %d each (%d bytes)\n",
+ nFileVars, (int)sizeof(FileVarDecl),
+ int(nFileVars*sizeof(FileVarDecl)));
+ fprintf(stderr, " %d parameter variable decls, %d each (%d bytes)\n",
+ nParmVars, (int)sizeof(ParmVarDecl),
+ int(nParmVars*sizeof(ParmVarDecl)));
+ fprintf(stderr, " %d field decls, %d each (%d bytes)\n",
+ nFieldDecls, (int)sizeof(FieldDecl),
+ int(nFieldDecls*sizeof(FieldDecl)));
+ fprintf(stderr, " %d struct/union/class decls, %d each (%d bytes)\n",
+ nSUC, (int)sizeof(RecordDecl),
+ int(nSUC*sizeof(RecordDecl)));
+ fprintf(stderr, " %d enum decls, %d each (%d bytes)\n",
+ nEnumDecls, (int)sizeof(EnumDecl),
+ int(nEnumDecls*sizeof(EnumDecl)));
+ fprintf(stderr, " %d enum constant decls, %d each (%d bytes)\n",
+ nEnumConst, (int)sizeof(EnumConstantDecl),
+ int(nEnumConst*sizeof(EnumConstantDecl)));
+ fprintf(stderr, " %d typedef decls, %d each (%d bytes)\n",
+ nTypedef, (int)sizeof(TypedefDecl),int(nTypedef*sizeof(TypedefDecl)));
+ fprintf(stderr, "Total bytes = %d\n",
+ int(nFuncs*sizeof(FunctionDecl)+nBlockVars*sizeof(BlockVarDecl)+
+ nFileVars*sizeof(FileVarDecl)+nParmVars*sizeof(ParmVarDecl)+
+ nFieldDecls*sizeof(FieldDecl)+nSUC*sizeof(RecordDecl)+
+ nEnumDecls*sizeof(EnumDecl)+nEnumConst*sizeof(EnumConstantDecl)+
+ nTypedef*sizeof(TypedefDecl)));
+}
+
+void Decl::addDeclKind(const Kind k) {
+ switch (k) {
+ case Typedef:
+ nTypedef++;
+ break;
+ case Function:
+ nFuncs++;
+ break;
+ case BlockVariable:
+ nBlockVars++;
+ break;
+ case FileVariable:
+ nFileVars++;
+ break;
+ case ParmVariable:
+ nParmVars++;
+ break;
+ case EnumConstant:
+ nEnumConst++;
+ break;
+ case Field:
+ nFieldDecls++;
+ break;
+ case Struct:
+ case Union:
+ case Class:
+ nSUC++;
+ break;
+ case Enum:
+ nEnumDecls++;
+ break;
+ }
+}
+
+// Out-of-line virtual method providing a home for Decl.
+Decl::~Decl() {
+}
+
+const char *Decl::getName() const {
+ if (const IdentifierInfo *II = getIdentifier())
+ return II->getName();
+ return "";
+}
+
+
+FunctionDecl::~FunctionDecl() {
+ delete[] ParamInfo;
+}
+
+unsigned FunctionDecl::getNumParams() const {
+ return cast<FunctionTypeProto>(getType().getTypePtr())->getNumArgs();
+}
+
+void FunctionDecl::setParams(ParmVarDecl **NewParamInfo, unsigned NumParams) {
+ assert(ParamInfo == 0 && "Already has param info!");
+ assert(NumParams == getNumParams() && "Parameter count mismatch!");
+
+ // Zero params -> null pointer.
+ if (NumParams) {
+ ParamInfo = new ParmVarDecl*[NumParams];
+ memcpy(ParamInfo, NewParamInfo, sizeof(ParmVarDecl*)*NumParams);
+ }
+}
+
+
+/// defineBody - When created, RecordDecl's correspond to a forward declared
+/// record. This method is used to mark the decl as being defined, with the
+/// specified contents.
+void RecordDecl::defineBody(FieldDecl **members, unsigned numMembers) {
+ assert(!isDefinition() && "Cannot redefine record!");
+ setDefinition(true);
+ NumMembers = numMembers;
+ if (numMembers) {
+ Members = new FieldDecl*[numMembers];
+ memcpy(Members, members, numMembers*sizeof(Decl*));
+ }
+}
+
+FieldDecl* RecordDecl::getMember(IdentifierInfo *name) {
+ if (Members == 0 || NumMembers < 0)
+ return 0;
+
+ // linear search. When C++ classes come along, will likely need to revisit.
+ for (int i = 0; i < NumMembers; ++i) {
+ if (Members[i]->getIdentifier() == name)
+ return Members[i];
+ }
+ return 0;
+}