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Support build and target configurations

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These changes add support for build and target configurations in the compiler.
Build and target configurations, combined with the use of #if/#else/#endif allow
for conditional compilation within declaration and statement contexts.

Build configurations can be passed into the compiler via the new '-D' flag, or
set within the LangOptions class. Target configurations are implicit, and
currently only "os" and "arch" are supported.

Swift SVN r14305
This commit is contained in:
Joe Pamer
2014-02-24 18:16:48 +00:00
parent fef36edc6b
commit f83f94d9d8
49 changed files with 933 additions and 38 deletions
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7
lib/AST/Decl.cpp
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@@ -365,6 +365,7 @@ ImportKind ImportDecl::getBestImportKind(const ValueDecl *VD) {
case DeclKind::PrefixOperator:
case DeclKind::PostfixOperator:
case DeclKind::EnumCase:
case DeclKind::IfConfig:
llvm_unreachable("not a ValueDecl");
case DeclKind::AssociatedType:
@@ -462,6 +463,10 @@ SourceRange TopLevelCodeDecl::getSourceRange() const {
return Body->getSourceRange();
}
SourceRange IfConfigDecl::getSourceRange() const {
return SourceRange(IfLoc, EndLoc);
}
/// Return true if a DeclRefExpr or MemberRefExpr use of this value is
/// "direct" when being used in the specified context.
bool ValueDecl::isUseFromContextDirect(const DeclContext *UseDC) const {
@@ -488,6 +493,7 @@ bool ValueDecl::isDefinition() const {
case DeclKind::InfixOperator:
case DeclKind::PrefixOperator:
case DeclKind::PostfixOperator:
case DeclKind::IfConfig:
llvm_unreachable("non-value decls shouldn't get here");
case DeclKind::Func:
@@ -523,6 +529,7 @@ bool ValueDecl::isInstanceMember() const {
case DeclKind::InfixOperator:
case DeclKind::PrefixOperator:
case DeclKind::PostfixOperator:
case DeclKind::IfConfig:
llvm_unreachable("Not a ValueDecl");
case DeclKind::Class: