Peel away CYCompound layers to fix tab completion.

[cycript.git] / Parser.hpp

diff --git a/Parser.hpp b/Parser.hpp
index b126d5a5fee8e4578a3d84300fb6189597d5b419..7197428bfe112e27d83b4b26ef43205005670f63 100644 (file)
--- a/Parser.hpp
+++ b/Parser.hpp
@@ -1,5 +1,5 @@
 /* Cycript - Optimizing JavaScript Compiler/Runtime
- * Copyright (C) 2009-2010  Jay Freeman (saurik)
+ * Copyright (C) 2009-2012  Jay Freeman (saurik)
 */
 
 /* GNU Lesser General Public License, Version 3 {{{ */
@@ -24,6 +24,7 @@
 
 #include <iostream>
 
+#include <stack>
 #include <string>
 #include <vector>
 #include <map>
@@ -98,6 +99,7 @@ struct CYPropertyName {
 };
 
 struct CYExpression;
+struct CYAssignment;
 
 enum CYNeeded {
     CYNever     = -1,
@@ -117,6 +119,34 @@ 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>
 {
@@ -126,7 +156,6 @@ struct CYStatement :
     void Single(CYOutput &out, CYFlags flags) const;
     void Multiple(CYOutput &out, CYFlags flags = CYNoFlags) const;
 
-    virtual CYStatement *Collapse(CYContext &context);
     virtual CYStatement *Replace(CYContext &context) = 0;
 
   private:
@@ -284,15 +313,8 @@ 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_;
@@ -302,7 +324,7 @@ struct CYScope {
     CYIdentifierAddressFlagsMap internal_;
     CYIdentifierValueSet identifiers_;
 
-    CYScope(CYScopeType type, CYContext &context, CYStatement *&statements);
+    CYScope(bool transparent, CYContext &context, CYStatement *&statements);
     virtual ~CYScope();
 
     void Close();
@@ -356,7 +378,8 @@ struct CYContext {
         Type_ **last(&values);
         CYForEach (next, values) {
             Replace(*last = next);
-            last = &(*last)->next_;
+            if (*last != NULL)
+                last = &(*last)->next_;
         }
     }
 
@@ -425,9 +448,12 @@ enum CYState {
 
 class CYDriver {
   public:
-    CYState state_;
     void *scanner_;
 
+    CYState state_;
+    bool nobrace_;
+    std::stack<bool> in_;
+
     const char *data_;
     size_t size_;
     FILE *file_;
@@ -501,8 +527,8 @@ 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 {
@@ -510,9 +536,12 @@ 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;
@@ -531,11 +560,8 @@ 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);
 
@@ -547,6 +573,7 @@ struct CYExpression :
     virtual void ClassName(CYOutput &out, bool object) const;
 
     virtual CYExpression *Replace(CYContext &context) = 0;
+    virtual CYAssignment *Assignment(CYContext &context);
 
     virtual CYExpression *Primitive(CYContext &context) {
         return this;
@@ -600,37 +627,26 @@ 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 :
@@ -666,13 +682,13 @@ 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) :
         name_(name),
         set_(set)
     {
@@ -1048,7 +1064,7 @@ struct CYArgument :
     {
     }
 
-    void Replace(CYContext &context);
+    CYArgument *Replace(CYContext &context);
     void Output(CYOutput &out) const;
 };
 
@@ -1139,20 +1155,19 @@ 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_;
 
@@ -1162,15 +1177,31 @@ 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
 {
@@ -1185,15 +1216,15 @@ 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)
     {
     }
 
@@ -1239,14 +1270,14 @@ 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)
@@ -1286,8 +1317,6 @@ struct CYMember :
     void SetLeft(CYExpression *object) {
         object_ = object;
     }
-
-    void Replace_(CYContext &context);
 };
 
 struct CYDirectMember :
@@ -1520,7 +1549,6 @@ struct CYExpress :
             throw;
     }
 
-    virtual CYStatement *Collapse(CYContext &context);
     virtual CYStatement *Replace(CYContext &context);
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
@@ -1570,7 +1598,6 @@ struct CYReturn :
 struct CYEmpty :
     CYStatement
 {
-    virtual CYStatement *Collapse(CYContext &context);
     virtual CYStatement *Replace(CYContext &context);
     virtual void Output(CYOutput &out, CYFlags flags) const;
 };
@@ -1674,6 +1701,17 @@ 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
 {