Implemented initial support for Ruby Blocks.

[cycript.git] / Parser.hpp

diff --git a/Parser.hpp b/Parser.hpp
index bac656dabc5e404dbf19ef1b3251133c4962156b..49e072263f13824e6a576f6d8601b45bc204061c 100644 (file)
--- a/Parser.hpp
+++ b/Parser.hpp
@@ -47,11 +47,17 @@
 
 #include <string>
 #include <vector>
+#include <map>
+#include <set>
 
+#include <cstdio>
 #include <cstdlib>
 
 #include "location.hh"
 #include "Pooling.hpp"
+#include "Options.hpp"
+
+class CYContext;
 
 template <typename Type_>
 struct CYNext {
@@ -81,8 +87,10 @@ struct CYThing {
 
 struct CYOutput {
     std::ostream &out_;
+    CYOptions &options_;
     bool pretty_;
     unsigned indent_;
+    bool right_;
 
     enum {
         NoMode,
@@ -92,10 +100,12 @@ struct CYOutput {
         Terminated
     } mode_;
 
-    CYOutput(std::ostream &out) :
+    CYOutput(std::ostream &out, CYOptions &options) :
         out_(out),
+        options_(options),
         pretty_(false),
         indent_(0),
+        right_(false),
         mode_(NoMode)
     {
     }
@@ -141,25 +151,10 @@ enum CYFlags {
     CYNoCall =       (1 << 3),
     CYNoRightHand =  (1 << 4),
     CYNoDangle =     (1 << 5),
+    CYNoInteger =    (1 << 6),
     CYNoBF =         (CYNoBrace | CYNoFunction),
 };
 
-struct CYContext {
-    apr_pool_t *pool_;
-
-    CYContext(apr_pool_t *pool) :
-        pool_(pool)
-    {
-    }
-
-    template <typename Type_>
-    void Replace(Type_ *&value) {
-        if (value != NULL)
-            while (Type_ *replace = value->Replace(*this))
-                value = replace;
-    }
-};
-
 struct CYStatement :
     CYNext<CYStatement>
 {
@@ -170,6 +165,7 @@ struct CYStatement :
     void Multiple(CYOutput &out, CYFlags flags = CYNoFlags) const;
 
     CYStatement *ReplaceAll(CYContext &context);
+    virtual CYStatement *Collapse(CYContext &context);
 
     virtual CYStatement *Replace(CYContext &context) = 0;
 
@@ -226,10 +222,11 @@ struct CYWord :
     {
     }
 
-    const char *Value() const {
-        return word_;
+    void Set(const char *value) {
+        word_ = value;
     }
 
+    virtual const char *Word() const;
     virtual void Output(CYOutput &out) const;
 
     virtual CYExpression *ClassName(CYContext &context, bool object);
@@ -238,16 +235,42 @@ struct CYWord :
 };
 
 _finline std::ostream &operator <<(std::ostream &lhs, const CYWord &rhs) {
-    return lhs << rhs.Value();
+    lhs << &rhs << '=';
+    return lhs << rhs.Word();
 }
 
 struct CYIdentifier :
+    CYNext<CYIdentifier>,
     CYWord
 {
+    CYIdentifier *replace_;
+    size_t offset_;
+    size_t usage_;
+
     CYIdentifier(const char *word) :
-        CYWord(word)
+        CYWord(word),
+        replace_(NULL),
+        offset_(0),
+        usage_(0)
     {
     }
+
+    virtual const char *Word() const;
+    CYIdentifier *Replace(CYContext &context);
+};
+
+struct CYComment :
+    CYStatement
+{
+    const char *value_;
+
+    CYComment(const char *value) :
+        value_(value)
+    {
+    }
+
+    virtual CYStatement *Replace(CYContext &context);
+    virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
 struct CYLabel :
@@ -266,6 +289,60 @@ struct CYLabel :
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
+struct CYCStringLess :
+    std::binary_function<const char *, const char *, bool>
+{
+    _finline bool operator ()(const char *lhs, const char *rhs) const {
+        return strcmp(lhs, rhs) < 0;
+    }
+};
+
+struct CYIdentifierValueLess :
+    std::binary_function<CYIdentifier *, CYIdentifier *, bool>
+{
+    _finline bool operator ()(CYIdentifier *lhs, CYIdentifier *rhs) const {
+        return CYCStringLess()(lhs->Word(), rhs->Word());
+    }
+};
+
+enum CYIdentifierFlags {
+    CYIdentifierArgument,
+    CYIdentifierVariable,
+    CYIdentifierOther,
+    CYIdentifierMagic,
+};
+
+typedef std::set<const char *, CYCStringLess> CYCStringSet;
+typedef std::set<CYIdentifier *, CYIdentifierValueLess> CYIdentifierValueSet;
+typedef std::map<CYIdentifier *, CYIdentifierFlags> CYIdentifierAddressFlagsMap;
+
+struct CYIdentifierUsage {
+    CYIdentifier *identifier_;
+    size_t usage_;
+};
+
+typedef std::vector<CYIdentifierUsage> CYIdentifierUsageVector;
+
+struct CYScope {
+    CYScope *parent_;
+
+    CYIdentifierAddressFlagsMap internal_;
+    CYIdentifierValueSet identifiers_;
+
+    CYScope() :
+        parent_(NULL)
+    {
+    }
+
+    virtual ~CYScope() {
+    }
+
+    void Declare(CYContext &context, CYIdentifier *identifier, CYIdentifierFlags flags);
+    virtual CYIdentifier *Lookup(CYContext &context, CYIdentifier *identifier);
+    void Merge(CYContext &context, CYIdentifier *identifier);
+    void Scope(CYContext &context, CYStatement *&statements);
+};
+
 struct CYProgram :
     CYThing
 {
@@ -277,10 +354,38 @@ struct CYProgram :
     }
 
     virtual void Replace(CYContext &context);
-
     virtual void Output(CYOutput &out) const;
 };
 
+struct CYContext {
+    apr_pool_t *pool_;
+    CYOptions &options_;
+    CYScope *scope_;
+    CYIdentifierUsageVector rename_;
+
+    CYContext(apr_pool_t *pool, CYOptions &options) :
+        pool_(pool),
+        options_(options),
+        scope_(NULL)
+    {
+    }
+
+    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;
+        }
+    }
+};
+
 struct CYBlock :
     CYStatement,
     CYThing
@@ -296,6 +401,14 @@ struct CYBlock :
         return statements_;
     }
 
+    void AddPrev(CYStatement *statement) {
+        CYStatement *last(statement);
+        while (last->next_ != NULL)
+            last = last->next_;
+        last->SetNext(statements_);
+        statements_ = statement;
+    }
+
     virtual CYStatement *Replace(CYContext &context);
 
     virtual void Output(CYOutput &out) const;
@@ -340,12 +453,39 @@ 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(apr_pool_t *pool = NULL, const std::string &filename = "");
     ~CYDriver();
 
     Condition GetCondition();
@@ -362,6 +502,7 @@ struct CYForInitialiser {
     }
 
     virtual void For(CYOutput &out) const = 0;
+    virtual CYExpression *Replace(CYContext &context) = 0;
 };
 
 struct CYForInInitialiser {
@@ -371,6 +512,7 @@ struct CYForInInitialiser {
     virtual void ForIn(CYOutput &out, CYFlags flags) const = 0;
     virtual const char *ForEachIn() const = 0;
     virtual CYExpression *ForEachIn(CYContext &out) = 0;
+    virtual CYExpression *Replace(CYContext &context) = 0;
 };
 
 struct CYNumber;
@@ -395,6 +537,8 @@ 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;
@@ -443,7 +587,7 @@ struct CYCompound :
 {
     CYExpression *expressions_;
 
-    CYCompound(CYExpression *expressions) :
+    CYCompound(CYExpression *expressions = NULL) :
         expressions_(expressions)
     {
     }
@@ -474,6 +618,22 @@ struct CYFunctionParameter :
     {
     }
 
+    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;
 };
 
@@ -502,7 +662,7 @@ struct CYForInComprehension :
     }
 
     virtual const char *Name() const {
-        return name_->Value();
+        return name_->Word();
     }
 
     virtual CYFunctionParameter *Parameter(CYContext &context) const;
@@ -523,7 +683,7 @@ struct CYForEachInComprehension :
     }
 
     virtual const char *Name() const {
-        return name_->Value();
+        return name_->Word();
     }
 
     virtual CYFunctionParameter *Parameter(CYContext &context) const;
@@ -638,7 +798,7 @@ struct CYString :
     }
 
     CYString(const CYWord *word) :
-        value_(word->Value()),
+        value_(word->Word()),
         size_(strlen(value_))
     {
     }
@@ -982,15 +1142,16 @@ struct CYDeclaration :
     virtual const char *ForEachIn() const;
     virtual CYExpression *ForEachIn(CYContext &out);
 
-    void Replace(CYContext &context);
+    virtual CYExpression *Replace(CYContext &context);
+    virtual CYAssignment *Assignment(CYContext &context);
 
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
 struct CYDeclarations :
     CYNext<CYDeclarations>,
-    CYForInitialiser,
-    CYThing
+    CYThing,
+    CYForInitialiser
 {
     CYDeclaration *declaration_;
 
@@ -1002,7 +1163,7 @@ struct CYDeclarations :
 
     virtual void For(CYOutput &out) const;
 
-    void Replace(CYContext &context);
+    virtual CYCompound *Replace(CYContext &context);
     CYProperty *Property(CYContext &context);
 
     virtual void Output(CYOutput &out) const;
@@ -1178,6 +1339,8 @@ struct CYNew :
 
     virtual CYExpression *Replace(CYContext &context);
     virtual void Output(CYOutput &out, CYFlags flags) const;
+
+    virtual CYExpression *AddArgument(CYContext &context, CYExpression *value);
 };
 
 struct CYCall :
@@ -1197,6 +1360,29 @@ 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 :
@@ -1249,6 +1435,7 @@ struct CYWhile :
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
+// XXX: this should be split up into CYAnonymousFunction and CYNamedFunction (subclass)
 struct CYFunction {
     CYIdentifier *name_;
     CYFunctionParameter *parameters_;
@@ -1264,10 +1451,12 @@ struct CYFunction {
     virtual ~CYFunction() {
     }
 
-    virtual void Replace_(CYContext &context);
+    void Inject(CYContext &context);
+    virtual void Replace_(CYContext &context, bool outer);
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
 
+// XXX: this should be split up into CYAnonymousFunctionExpression and CYNamedFunctionExpression
 struct CYFunctionExpression :
     CYFunction,
     CYExpression
@@ -1284,6 +1473,20 @@ 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
@@ -1305,8 +1508,11 @@ struct CYExpress :
     CYExpress(CYExpression *expression) :
         expression_(expression)
     {
+        if (expression == NULL)
+            throw;
     }
 
+    virtual CYStatement *Collapse(CYContext &context);
     virtual CYStatement *Replace(CYContext &context);
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
@@ -1356,6 +1562,7 @@ struct CYReturn :
 struct CYEmpty :
     CYStatement
 {
+    virtual CYStatement *Collapse(CYContext &context);
     virtual CYStatement *Replace(CYContext &context);
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };