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diff gen/cl_helpers.h @ 986:a8cb25d478c4

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Use LLVM-style command line (instead of DMD-style) Note: For a backward compatible interface, use the new bin/ldmd script. It supports all old options while passing on anything it doesn't recognize. Some changes caused by this: * -debug and -version are now -d-debug and -d-version due to a conflict with standard LLVM options. * All "flag" options now allow an optional =true/=1/=false/=0 suffix. * Some "hidden debug switches" starting with "--" were renamed because LLVM doesn't care about the number of dashes, so they were conflicting with other options (such as -c). The new versions start with "-hidden-debug-" instead of "--" * --help works, but has a non-zero exit code. This breaks some Tango scripts which use it to test for compiler existence. See tango.patch. Some changes not (directly) caused by this; * (-enable/-disable)-FOO options are now available for pre- and postconditions. * -march is used instead of -m (like other LLVM programs), but -m is an alias for it. * -defaultlib, -debuglib, -d-debug and -d-version allow comma-separated values. The effect should be identical to specifying the same option multiple times. I decided against allowing these for some other options because paths might contain commas on some systems. * -fPIC is removed in favor of the standard LLVM option -relocation-model=pic Bug: * If -run is specified as the last argument in DFLAGS, no error is generated. (Not very serious IMHO)
author Frits van Bommel <fvbommel wxs.nl>
date Wed, 25 Feb 2009 17:34:51 +0100
parents
children cc1efa23030a
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gen/cl_helpers.h	Wed Feb 25 17:34:51 2009 +0100
@@ -0,0 +1,68 @@
+#ifndef LDC_CL_HELPERS_H
+#define LDC_CL_HELPERS_H
+
+#include <string>
+
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Compiler.h"
+
+struct Array;
+
+namespace opts {
+    namespace cl = llvm::cl;
+    
+    /// Helper class for fancier options
+    class FlagParser : public cl::parser<bool> {
+        std::vector<std::pair<std::string, bool> > switches;
+    public:
+        template <class Opt>
+        void initialize(Opt &O) {
+            assert(!(O.getMiscFlags() & cl::AllowInverse)
+                && "FlagParser doesn't support redundant AllowInverse flag");
+            
+            std::string Name = O.ArgStr;
+            switches.push_back(make_pair("enable-" + Name, true));
+            switches.push_back(make_pair("disable-" + Name, false));
+            // Replace <foo> with -enable-<foo>
+            O.ArgStr = switches[0].first.c_str();
+        }
+        
+        bool parse(cl::Option &O, const char *ArgName, const std::string &ArgValue, bool &Val);
+        
+        void getExtraOptionNames(std::vector<const char*> &Names);
+    };
+    
+    /// Helper class for options that set multiple flags
+    class MultiSetter {
+        std::vector<bool*> locations;
+        bool invert;
+        MultiSetter(bool); //not implemented, disable auto-conversion
+    public:
+        MultiSetter(bool invert, bool* p, ...) END_WITH_NULL;
+        
+        void operator=(bool val);
+    };
+    
+    /// Helper class to fill Array with char* when given strings
+    /// (Errors on empty strings)
+    class ArrayAdapter {
+        const char* name;
+        Array** arrp;
+    public:
+        ArrayAdapter(const char* name_, Array*& arr) {
+            name = name_;
+            arrp = &arr;
+            assert(name);
+            assert(arrp);
+        }
+        
+        void push_back(const char* cstr);
+        
+        void push_back(const std::string& str) {
+            push_back(str.c_str());
+        }
+    };
+
+}
+
+#endif