X-Git-Url: https://git.saurik.com/cycript.git/blobdiff_plain/a86e34d01f829a8b4f58f6066d78148c0901c1dd..9efd8b032d404ee2ad8267df43e7888416e4ff83:/Parser.hpp

diff --git a/Parser.hpp b/Parser.hpp
index 008be05..12a5afd 100644
--- a/Parser.hpp
+++ b/Parser.hpp
@@ -1,40 +1,22 @@
-/* Cycript - Inlining/Optimizing JavaScript Compiler
- * Copyright (C) 2009  Jay Freeman (saurik)
+/* Cycript - Optimizing JavaScript Compiler/Runtime
+ * Copyright (C) 2009-2010  Jay Freeman (saurik)
 */
 
-/* Modified BSD License {{{ */
+/* GNU Lesser General Public License, Version 3 {{{ */
 /*
- *        Redistribution and use in source and binary
- * forms, with or without modification, are permitted
- * provided that the following conditions are met:
+ * Cycript is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
  *
- * 1. Redistributions of source code must retain the
- *    above copyright notice, this list of conditions
- *    and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the
- *    above copyright notice, this list of conditions
- *    and the following disclaimer in the documentation
- *    and/or other materials provided with the
- *    distribution.
- * 3. The name of the author may not be used to endorse
- *    or promote products derived from this software
- *    without specific prior written permission.
+ * Cycript is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+ * License for more details.
  *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS''
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
- * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
- * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Cycript.  If not, see <http://www.gnu.org/licenses/>.
+**/
 /* }}} */
 
 #ifndef CYPARSER_HPP
@@ -50,6 +32,7 @@
 #include <map>
 #include <set>
 
+#include <cstdio>
 #include <cstdlib>
 
 #include "location.hh"
@@ -243,10 +226,14 @@ struct CYIdentifier :
     CYWord
 {
     CYIdentifier *replace_;
+    size_t offset_;
+    size_t usage_;
 
     CYIdentifier(const char *word) :
         CYWord(word),
-        replace_(NULL)
+        replace_(NULL),
+        offset_(0),
+        usage_(0)
     {
     }
 
@@ -305,40 +292,52 @@ enum CYIdentifierFlags {
     CYIdentifierVariable,
     CYIdentifierOther,
     CYIdentifierMagic,
+    CYIdentifierCatch,
 };
 
 typedef std::set<const char *, CYCStringLess> CYCStringSet;
 typedef std::set<CYIdentifier *, CYIdentifierValueLess> CYIdentifierValueSet;
-typedef std::set<CYIdentifier *> CYIdentifierAddressSet;
-typedef std::vector<CYIdentifier *> CYIdentifierAddressVector;
 typedef std::map<CYIdentifier *, CYIdentifierFlags> CYIdentifierAddressFlagsMap;
 
+struct CYIdentifierUsage {
+    CYIdentifier *identifier_;
+    size_t usage_;
+};
+
+typedef std::vector<CYIdentifierUsage> CYIdentifierUsageVector;
+
+// XXX: strategy pattern, maybe subclass
+enum CYScopeType {
+    CYScopeCatch,
+    CYScopeFunction,
+    CYScopeProgram,
+};
+
 struct CYScope {
+    CYScopeType type_;
+
+    CYContext &context_;
+    CYStatement *&statements_;
+
     CYScope *parent_;
-    CYIdentifierAddressFlagsMap internal_;
 
+    CYIdentifierAddressFlagsMap internal_;
     CYIdentifierValueSet identifiers_;
-    size_t offset_;
 
-    CYScope() :
-        parent_(NULL),
-        offset_(0)
-    {
-    }
+    CYScope(CYScopeType type, CYContext &context, CYStatement *&statements);
+
+    void Close();
 
     void Declare(CYContext &context, CYIdentifier *identifier, CYIdentifierFlags flags);
     virtual CYIdentifier *Lookup(CYContext &context, CYIdentifier *identifier);
-    void Merge(CYContext &context, CYIdentifierAddressVector &external);
+    void Merge(CYContext &context, CYIdentifier *identifier);
     void Scope(CYContext &context, CYStatement *&statements);
 };
 
 struct CYProgram :
-    CYScope,
     CYThing
 {
     CYStatement *statements_;
-    CYIdentifierAddressVector rename_;
-    CYCStringSet external_;
 
     CYProgram(CYStatement *statements) :
         statements_(statements)
@@ -349,16 +348,69 @@ struct CYProgram :
     virtual void Output(CYOutput &out) const;
 };
 
+struct CYNonLocal;
+
+struct CYContext {
+    CYOptions &options_;
+
+    CYScope *scope_;
+    CYIdentifierUsageVector rename_;
+
+    CYNonLocal *nonlocal_;
+    CYNonLocal *nextlocal_;
+    unsigned unique_;
+
+    CYContext(CYOptions &options) :
+        options_(options),
+        scope_(NULL),
+        nonlocal_(NULL),
+        nextlocal_(NULL),
+        unique_(0)
+    {
+    }
+
+    virtual ~CYContext() {
+    }
+
+    template <typename Type_>
+    void Replace(Type_ *&value) {
+        for (;;) if (value == NULL)
+            break;
+        else {
+            Type_ *replace(value->Replace(*this));
+            if (replace != value)
+                value = replace;
+            else break;
+        }
+    }
+
+    void NonLocal(CYStatement *&statements);
+    CYIdentifier *Unique();
+};
+
+struct CYNonLocal {
+    CYIdentifier *identifier_;
+
+    CYNonLocal() :
+        identifier_(NULL)
+    {
+    }
+
+    CYIdentifier *Target(CYContext &context) {
+        if (identifier_ == NULL)
+            identifier_ = context.Unique();
+        return identifier_;
+    }
+};
+
 struct CYBlock :
     CYStatement,
     CYThing
 {
     CYStatement *statements_;
-    CYScope *scope_;
 
-    CYBlock(CYStatement *statements, CYScope *scope = NULL) :
-        statements_(statements),
-        scope_(scope)
+    CYBlock(CYStatement *statements) :
+        statements_(statements)
     {
     }
 
@@ -388,8 +440,6 @@ enum CYState {
 
 class CYDriver {
   public:
-    CYPool pool_;
-
     CYState state_;
     void *scanner_;
 
@@ -418,12 +468,39 @@ class CYDriver {
     CYProgram *program_;
     Errors errors_;
 
+    bool auto_;
+
+    struct Context {
+        CYExpression *context_;
+
+        Context(CYExpression *context) :
+            context_(context)
+        {
+        }
+
+        typedef std::vector<CYWord *> Words;
+        Words words_;
+    };
+
+    typedef std::vector<Context> Contexts;
+    Contexts contexts_;
+
+    CYExpression *context_;
+
+    enum Mode {
+        AutoNone,
+        AutoPrimary,
+        AutoDirect,
+        AutoIndirect,
+        AutoMessage
+    } mode_;
+
   private:
     void ScannerInit();
     void ScannerDestroy();
 
   public:
-    CYDriver(const std::string &filename);
+    CYDriver(const std::string &filename = "");
     ~CYDriver();
 
     Condition GetCondition();
@@ -475,6 +552,8 @@ struct CYExpression :
     virtual const char *ForEachIn() const;
     virtual CYExpression *ForEachIn(CYContext &out);
 
+    virtual CYExpression *AddArgument(CYContext &context, CYExpression *value);
+
     virtual void Output(CYOutput &out) const;
     virtual void Output(CYOutput &out, CYFlags flags) const = 0;
     void Output(CYOutput &out, unsigned precedence, CYFlags flags) const;
@@ -482,8 +561,6 @@ struct CYExpression :
     virtual CYExpression *ClassName(CYContext &context, bool object);
     virtual void ClassName(CYOutput &out, bool object) const;
 
-    CYExpression *ReplaceAll(CYContext &context);
-
     virtual CYExpression *Replace(CYContext &context) = 0;
 
     virtual CYExpression *Primitive(CYContext &context) {
@@ -554,7 +631,22 @@ struct CYFunctionParameter :
     {
     }
 
-    void Replace(CYContext &context);
+    virtual CYFunctionParameter *Replace(CYContext &context, CYBlock &code);
+    virtual void Output(CYOutput &out) const;
+};
+
+struct CYOptionalFunctionParameter :
+    CYFunctionParameter
+{
+    CYExpression *initializer_;
+
+    CYOptionalFunctionParameter(CYIdentifier *name, CYExpression *initializer, CYFunctionParameter *next = NULL) :
+        CYFunctionParameter(name, next),
+        initializer_(initializer)
+    {
+    }
+
+    virtual CYFunctionParameter *Replace(CYContext &context, CYBlock &code);
     virtual void Output(CYOutput &out) const;
 };
 
@@ -856,6 +948,11 @@ struct CYVariable :
     {
     }
 
+    CYVariable(const char *name) :
+        name_(new($pool) CYIdentifier(name))
+    {
+    }
+
     CYPrecedence(0)
     CYRightHand(false)
 
@@ -1182,7 +1279,7 @@ struct CYObject :
 {
     CYProperty *properties_;
 
-    CYObject(CYProperty *properties) :
+    CYObject(CYProperty *properties = NULL) :
         properties_(properties)
     {
     }
@@ -1240,13 +1337,16 @@ struct CYIndirectMember :
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
-struct CYNew :
+namespace cy {
+namespace Syntax {
+
+struct New :
     CYExpression
 {
     CYExpression *constructor_;
     CYArgument *arguments_;
 
-    CYNew(CYExpression *constructor, CYArgument *arguments) :
+    New(CYExpression *constructor, CYArgument *arguments) :
         constructor_(constructor),
         arguments_(arguments)
     {
@@ -1260,8 +1360,12 @@ struct CYNew :
 
     virtual CYExpression *Replace(CYContext &context);
     virtual void Output(CYOutput &out, CYFlags flags) const;
+
+    virtual CYExpression *AddArgument(CYContext &context, CYExpression *value);
 };
 
+} }
+
 struct CYCall :
     CYExpression
 {
@@ -1279,6 +1383,29 @@ struct CYCall :
 
     virtual CYExpression *Replace(CYContext &context);
     virtual void Output(CYOutput &out, CYFlags flags) const;
+
+    virtual CYExpression *AddArgument(CYContext &context, CYExpression *value);
+};
+
+struct CYRubyProc;
+
+struct CYRubyBlock :
+    CYExpression
+{
+    CYExpression *call_;
+    CYRubyProc *proc_;
+
+    CYRubyBlock(CYExpression *call, CYRubyProc *proc) :
+        call_(call),
+        proc_(proc)
+    {
+    }
+
+    CYPrecedence(1)
+    CYRightHand(false)
+
+    virtual CYExpression *Replace(CYContext &context);
+    virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
 struct CYIf :
@@ -1331,17 +1458,18 @@ struct CYWhile :
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
-struct CYFunction :
-    CYScope
-{
+// XXX: this should be split up into CYAnonymousFunction and CYNamedFunction (subclass)
+struct CYFunction {
     CYIdentifier *name_;
     CYFunctionParameter *parameters_;
     CYBlock code_;
+    CYNonLocal *nonlocal_;
 
     CYFunction(CYIdentifier *name, CYFunctionParameter *parameters, CYStatement *statements) :
         name_(name),
         parameters_(parameters),
-        code_(statements, this)
+        code_(statements),
+        nonlocal_(NULL)
     {
     }
 
@@ -1353,6 +1481,7 @@ struct CYFunction :
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
+// XXX: this should be split up into CYAnonymousFunctionExpression and CYNamedFunctionExpression
 struct CYFunctionExpression :
     CYFunction,
     CYExpression
@@ -1369,6 +1498,20 @@ struct CYFunctionExpression :
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
+// XXX: this should derive from CYAnonymousFunctionExpression
+struct CYRubyProc :
+    CYFunctionExpression
+{
+    CYRubyProc(CYFunctionParameter *parameters, CYStatement *statements) :
+        CYFunctionExpression(NULL, parameters, statements)
+    {
+    }
+
+    virtual CYExpression *Replace(CYContext &context);
+    virtual void Output(CYOutput &out, CYFlags flags) const;
+};
+
+// XXX: this should derive from CYNamedFunction
 struct CYFunctionStatement :
     CYFunction,
     CYStatement
@@ -1505,7 +1648,7 @@ struct Throw :
 {
     CYExpression *value_;
 
-    Throw(CYExpression *value) :
+    Throw(CYExpression *value = NULL) :
         value_(value)
     {
     }