X-Git-Url: https://git.saurik.com/cycript.git/blobdiff_plain/2eb8215d4156f442f856026f1714aef7ed185752..b6ace22552e41cb05d69eb0325a91dc0b7aa1d40:/Parser.hpp

diff --git a/Parser.hpp b/Parser.hpp
index 8773619..2102091 100644
--- a/Parser.hpp
+++ b/Parser.hpp
@@ -1,47 +1,26 @@
-/* Cycript - Inlining/Optimizing JavaScript Compiler
- * Copyright (C) 2009  Jay Freeman (saurik)
+/* Cycript - Optimizing JavaScript Compiler/Runtime
+ * Copyright (C) 2009-2013  Jay Freeman (saurik)
 */
 
-/* Modified BSD License {{{ */
+/* GNU 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 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 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 General Public License
+ * along with Cycript.  If not, see <http://www.gnu.org/licenses/>.
+**/
 /* }}} */
 
-#ifndef CYPARSER_HPP
-#define CYPARSER_HPP
-
-// XXX: wtf is this here?!
-#define CYPA 16
+#ifndef CYCRIPT_PARSER_HPP
+#define CYCRIPT_PARSER_HPP
 
 #include <iostream>
 
@@ -53,30 +32,11 @@
 #include <cstdio>
 #include <cstdlib>
 
-#include "location.hh"
+#include "List.hpp"
 #include "Pooling.hpp"
 #include "Options.hpp"
 
-class CYContext;
-
-template <typename Type_>
-struct CYNext {
-    Type_ *next_;
-
-    CYNext() :
-        next_(NULL)
-    {
-    }
-
-    CYNext(Type_ *next) :
-        next_(next)
-    {
-    }
-
-    void SetNext(Type_ *next) {
-        next_ = next;
-    }
-};
+struct CYContext;
 
 struct CYThing {
     virtual ~CYThing() {
@@ -136,6 +96,7 @@ struct CYPropertyName {
 };
 
 struct CYExpression;
+struct CYAssignment;
 
 enum CYNeeded {
     CYNever     = -1,
@@ -155,6 +116,34 @@ enum CYFlags {
     CYNoBF =         (CYNoBrace | CYNoFunction),
 };
 
+_finline CYFlags operator ~(CYFlags rhs) {
+    return static_cast<CYFlags>(~static_cast<unsigned>(rhs));
+}
+
+_finline CYFlags operator &(CYFlags lhs, CYFlags rhs) {
+    return static_cast<CYFlags>(static_cast<unsigned>(lhs) & static_cast<unsigned>(rhs));
+}
+
+_finline CYFlags operator |(CYFlags lhs, CYFlags rhs) {
+    return static_cast<CYFlags>(static_cast<unsigned>(lhs) | static_cast<unsigned>(rhs));
+}
+
+_finline CYFlags &operator |=(CYFlags &lhs, CYFlags rhs) {
+    return lhs = lhs | rhs;
+}
+
+_finline CYFlags CYLeft(CYFlags flags) {
+    return flags & ~(CYNoDangle | CYNoInteger);
+}
+
+_finline CYFlags CYRight(CYFlags flags) {
+    return flags & ~CYNoBF;
+}
+
+_finline CYFlags CYCenter(CYFlags flags) {
+    return CYLeft(CYRight(flags));
+}
+
 struct CYStatement :
     CYNext<CYStatement>
 {
@@ -164,9 +153,6 @@ struct CYStatement :
     void Single(CYOutput &out, CYFlags flags) const;
     void Multiple(CYOutput &out, CYFlags flags = CYNoFlags) const;
 
-    CYStatement *ReplaceAll(CYContext &context);
-    virtual CYStatement *Collapse(CYContext &context);
-
     virtual CYStatement *Replace(CYContext &context) = 0;
 
   private:
@@ -324,15 +310,8 @@ struct CYIdentifierUsage {
 
 typedef std::vector<CYIdentifierUsage> CYIdentifierUsageVector;
 
-// XXX: strategy pattern, maybe subclass
-enum CYScopeType {
-    CYScopeCatch,
-    CYScopeFunction,
-    CYScopeProgram,
-};
-
 struct CYScope {
-    CYScopeType type_;
+    bool transparent_;
 
     CYContext &context_;
     CYStatement *&statements_;
@@ -342,7 +321,8 @@ struct CYScope {
     CYIdentifierAddressFlagsMap internal_;
     CYIdentifierValueSet identifiers_;
 
-    CYScope(CYScopeType type, CYContext &context, CYStatement *&statements);
+    CYScope(bool transparent, CYContext &context, CYStatement *&statements);
+    virtual ~CYScope();
 
     void Close();
 
@@ -367,11 +347,14 @@ struct CYProgram :
 };
 
 struct CYNonLocal;
+struct CYThisScope;
 
 struct CYContext {
     CYOptions &options_;
 
     CYScope *scope_;
+    CYThisScope *this_;
+
     CYIdentifierUsageVector rename_;
 
     CYNonLocal *nonlocal_;
@@ -381,6 +364,7 @@ struct CYContext {
     CYContext(CYOptions &options) :
         options_(options),
         scope_(NULL),
+        this_(NULL),
         nonlocal_(NULL),
         nextlocal_(NULL),
         unique_(0)
@@ -390,6 +374,16 @@ struct CYContext {
     virtual ~CYContext() {
     }
 
+    template <typename Type_>
+    void ReplaceAll(Type_ *&values) {
+        Type_ **last(&values);
+        CYForEach (next, values) {
+            Replace(*last = next);
+            if (*last != NULL)
+                last = &(*last)->next_;
+        }
+    }
+
     template <typename Type_>
     void Replace(Type_ *&value) {
         for (;;) if (value == NULL)
@@ -421,6 +415,25 @@ struct CYNonLocal {
     }
 };
 
+struct CYThisScope :
+    CYNext<CYThisScope>
+{
+    CYIdentifier *identifier_;
+
+    CYThisScope() :
+        identifier_(NULL)
+    {
+    }
+
+    CYIdentifier *Identifier(CYContext &context) {
+        if (next_ != NULL)
+            return next_->Identifier(context);
+        if (identifier_ == NULL)
+            identifier_ = context.Unique();
+        return identifier_;
+    }
+};
+
 struct CYBlock :
     CYStatement,
     CYThing
@@ -437,10 +450,7 @@ struct CYBlock :
     }
 
     void AddPrev(CYStatement *statement) {
-        CYStatement *last(statement);
-        while (last->next_ != NULL)
-            last = last->next_;
-        last->SetNext(statements_);
+        CYSetLast(statement) = statements_;
         statements_ = statement;
     }
 
@@ -450,92 +460,33 @@ struct CYBlock :
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
-enum CYState {
-    CYClear,
-    CYRestricted,
-    CYNewLine
-};
-
-class CYDriver {
-  public:
-    CYState state_;
-    void *scanner_;
-
-    const char *data_;
-    size_t size_;
-    FILE *file_;
-
-    bool strict_;
-
-    enum Condition {
-        RegExpCondition,
-        XMLContentCondition,
-        XMLTagCondition,
-    };
-
-    std::string filename_;
-
-    struct Error {
-        bool warning_;
-        cy::location location_;
-        std::string message_;
-    };
-
-    typedef std::vector<Error> Errors;
-
-    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_;
-
+class CYStream :
+    public std::istream
+{
   private:
-    void ScannerInit();
-    void ScannerDestroy();
+    class CYBuffer :
+        public std::streambuf
+    {
+      public:
+        CYBuffer(const char *start, const char *end) {
+            setg(const_cast<char *>(start), const_cast<char *>(start), const_cast<char *>(end));
+        }
+    } buffer_;
 
   public:
-    CYDriver(const std::string &filename = "");
-    ~CYDriver();
-
-    Condition GetCondition();
-    void SetCondition(Condition condition);
-
-    void PushCondition(Condition condition);
-    void PopCondition();
-
-    void Warning(const cy::location &location, const char *message);
+    CYStream(const char *start, const char *end) :
+        std::istream(&buffer_),
+        buffer_(start, end)
+    {
+    }
 };
 
 struct CYForInitialiser {
     virtual ~CYForInitialiser() {
     }
 
-    virtual void For(CYOutput &out) const = 0;
     virtual CYExpression *Replace(CYContext &context) = 0;
+    virtual void Output(CYOutput &out, CYFlags flags) const = 0;
 };
 
 struct CYForInInitialiser {
@@ -543,9 +494,12 @@ struct CYForInInitialiser {
     }
 
     virtual void ForIn(CYOutput &out, CYFlags flags) const = 0;
-    virtual const char *ForEachIn() const = 0;
-    virtual CYExpression *ForEachIn(CYContext &out) = 0;
+    virtual CYStatement *ForEachIn(CYContext &out, CYExpression *value) = 0;
+
     virtual CYExpression *Replace(CYContext &context) = 0;
+    virtual CYAssignment *Assignment(CYContext &context) = 0;
+
+    virtual void Output(CYOutput &out, CYFlags flags) const = 0;
 };
 
 struct CYNumber;
@@ -564,11 +518,8 @@ struct CYExpression :
         return true;
     }
 
-    virtual void For(CYOutput &out) const;
     virtual void ForIn(CYOutput &out, CYFlags flags) const;
-
-    virtual const char *ForEachIn() const;
-    virtual CYExpression *ForEachIn(CYContext &out);
+    virtual CYStatement *ForEachIn(CYContext &out, CYExpression *value);
 
     virtual CYExpression *AddArgument(CYContext &context, CYExpression *value);
 
@@ -579,9 +530,8 @@ 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 CYAssignment *Assignment(CYContext &context);
 
     virtual CYExpression *Primitive(CYContext &context) {
         return this;
@@ -606,8 +556,9 @@ struct CYExpression :
     }
 
 #define CYPrecedence(value) \
+    static const unsigned Precedence_ = value; \
     virtual unsigned Precedence() const { \
-        return value; \
+        return Precedence_; \
     }
 
 #define CYRightHand(value) \
@@ -626,10 +577,7 @@ struct CYCompound :
     }
 
     void AddPrev(CYExpression *expression) {
-        CYExpression *last(expression);
-        while (last->next_ != NULL)
-            last = last->next_;
-        last->SetNext(expressions_);
+        CYSetLast(expression) = expressions_;
         expressions_ = expression;
     }
 
@@ -637,43 +585,37 @@ struct CYCompound :
 
     virtual CYExpression *Replace(CYContext &context);
     void Output(CYOutput &out, CYFlags flags) const;
+
+    virtual CYExpression *Primitive(CYContext &context);
 };
 
+struct CYDeclaration;
+
 struct CYFunctionParameter :
     CYNext<CYFunctionParameter>,
     CYThing
 {
-    CYIdentifier *name_;
+    CYForInInitialiser *initialiser_;
 
-    CYFunctionParameter(CYIdentifier *name, CYFunctionParameter *next = NULL) :
+    CYFunctionParameter(CYForInInitialiser *initialiser, CYFunctionParameter *next = NULL) :
         CYNext<CYFunctionParameter>(next),
-        name_(name)
-    {
-    }
-
-    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)
+        initialiser_(initialiser)
     {
     }
 
-    virtual CYFunctionParameter *Replace(CYContext &context, CYBlock &code);
-    virtual void Output(CYOutput &out) const;
+    void Replace(CYContext &context, CYBlock &code);
+    void Output(CYOutput &out) const;
 };
 
 struct CYComprehension :
     CYNext<CYComprehension>,
     CYThing
 {
+    CYComprehension(CYComprehension *next = NULL) :
+        CYNext<CYComprehension>(next)
+    {
+    }
+
     virtual const char *Name() const = 0;
 
     virtual CYFunctionParameter *Parameter(CYContext &context) const = 0;
@@ -688,7 +630,8 @@ struct CYForInComprehension :
     CYIdentifier *name_;
     CYExpression *set_;
 
-    CYForInComprehension(CYIdentifier *name, CYExpression *set) :
+    CYForInComprehension(CYIdentifier *name, CYExpression *set, CYComprehension *next = NULL) :
+        CYComprehension(next),
         name_(name),
         set_(set)
     {
@@ -703,13 +646,14 @@ struct CYForInComprehension :
     virtual void Output(CYOutput &out) const;
 };
 
-struct CYForEachInComprehension :
+struct CYForOfComprehension :
     CYComprehension
 {
     CYIdentifier *name_;
     CYExpression *set_;
 
-    CYForEachInComprehension(CYIdentifier *name, CYExpression *set) :
+    CYForOfComprehension(CYIdentifier *name, CYExpression *set, CYComprehension *next = NULL) :
+        CYComprehension(next),
         name_(name),
         set_(set)
     {
@@ -1085,7 +1029,7 @@ struct CYArgument :
     {
     }
 
-    void Replace(CYContext &context);
+    CYArgument *Replace(CYContext &context);
     void Output(CYOutput &out) const;
 };
 
@@ -1176,20 +1120,19 @@ struct CYDeclaration :
     }
 
     virtual void ForIn(CYOutput &out, CYFlags flags) const;
-
-    virtual const char *ForEachIn() const;
-    virtual CYExpression *ForEachIn(CYContext &out);
+    virtual CYStatement *ForEachIn(CYContext &out, CYExpression *value);
 
     virtual CYExpression *Replace(CYContext &context);
+
     virtual CYAssignment *Assignment(CYContext &context);
+    CYVariable *Variable(CYContext &context);
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
 struct CYDeclarations :
     CYNext<CYDeclarations>,
-    CYThing,
-    CYForInitialiser
+    CYThing
 {
     CYDeclaration *declaration_;
 
@@ -1199,15 +1142,31 @@ struct CYDeclarations :
     {
     }
 
-    virtual void For(CYOutput &out) const;
+    void Replace(CYContext &context);
 
-    virtual CYCompound *Replace(CYContext &context);
+    CYCompound *Compound(CYContext &context);
     CYProperty *Property(CYContext &context);
+    CYArgument *Argument(CYContext &context);
+    CYFunctionParameter *Parameter(CYContext &context);
 
     virtual void Output(CYOutput &out) const;
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
+struct CYForDeclarations :
+    CYForInitialiser
+{
+    CYDeclarations *declarations_;
+
+    CYForDeclarations(CYDeclarations *declarations) :
+        declarations_(declarations)
+    {
+    }
+
+    virtual CYCompound *Replace(CYContext &context);
+    virtual void Output(CYOutput &out, CYFlags flags) const;
+};
+
 struct CYVar :
     CYStatement
 {
@@ -1222,15 +1181,15 @@ struct CYVar :
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
-struct CYLet :
+struct CYLetStatement :
     CYStatement
 {
     CYDeclarations *declarations_;
-    CYBlock code_;
+    CYStatement *code_;
 
-    CYLet(CYDeclarations *declarations, CYStatement *statements) :
+    CYLetStatement(CYDeclarations *declarations, CYStatement *code) :
         declarations_(declarations),
-        code_(statements)
+        code_(code)
     {
     }
 
@@ -1276,14 +1235,14 @@ struct CYForIn :
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
-struct CYForEachIn :
+struct CYForOf :
     CYStatement
 {
     CYForInInitialiser *initialiser_;
     CYExpression *set_;
     CYStatement *code_;
 
-    CYForEachIn(CYForInInitialiser *initialiser, CYExpression *set, CYStatement *code) :
+    CYForOf(CYForInInitialiser *initialiser, CYExpression *set, CYStatement *code) :
         initialiser_(initialiser),
         set_(set),
         code_(code)
@@ -1323,8 +1282,6 @@ struct CYMember :
     void SetLeft(CYExpression *object) {
         object_ = object;
     }
-
-    void Replace_(CYContext &context);
 };
 
 struct CYDirectMember :
@@ -1483,7 +1440,9 @@ struct CYFunction {
     CYIdentifier *name_;
     CYFunctionParameter *parameters_;
     CYBlock code_;
+
     CYNonLocal *nonlocal_;
+    CYThisScope this_;
 
     CYFunction(CYIdentifier *name, CYFunctionParameter *parameters, CYStatement *statements) :
         name_(name),
@@ -1518,6 +1477,23 @@ struct CYFunctionExpression :
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
+// XXX: this should derive from CYAnonymousFunction
+struct CYFatArrow :
+    CYFunction,
+    CYExpression
+{
+    CYFatArrow(CYFunctionParameter *parameters, CYStatement *statements) :
+        CYFunction(NULL, parameters, statements)
+    {
+    }
+
+    CYPrecedence(0)
+    CYRightHand(false)
+
+    virtual CYExpression *Replace(CYContext &context);
+    virtual void Output(CYOutput &out, CYFlags flags) const;
+};
+
 // XXX: this should derive from CYAnonymousFunctionExpression
 struct CYRubyProc :
     CYFunctionExpression
@@ -1557,7 +1533,6 @@ struct CYExpress :
             throw;
     }
 
-    virtual CYStatement *Collapse(CYContext &context);
     virtual CYStatement *Replace(CYContext &context);
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
@@ -1607,7 +1582,6 @@ struct CYReturn :
 struct CYEmpty :
     CYStatement
 {
-    virtual CYStatement *Collapse(CYContext &context);
     virtual CYStatement *Replace(CYContext &context);
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
@@ -1711,6 +1685,17 @@ struct CYSwitch :
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
+struct CYDebugger :
+    CYStatement
+{
+    CYDebugger()
+    {
+    }
+
+    virtual CYStatement *Replace(CYContext &context);
+    virtual void Output(CYOutput &out, CYFlags flags) const;
+};
+
 struct CYCondition :
     CYExpression
 {
@@ -1879,4 +1864,4 @@ CYAssignment_("&=", BitwiseAnd)
 CYAssignment_("^=", BitwiseXOr)
 CYAssignment_("|=", BitwiseOr)
 
-#endif/*CYPARSER_HPP*/
+#endif/*CYCRIPT_PARSER_HPP*/