Add support for more statements

* If statements decompiled correctly
    * Unary expressions have neater decompilation
    * Break and continue statements
    * Comparison operators decompiled correctly

src/main/java/ghidrust/decompiler/parser/c/CVisitor.java

@@ -277,7 +277,11 @@ public class CVisitor implements CParserVisitor {
     }
 
     public Object visit(ASTSelectionStatement node, Object data) {
-        return defaultVisit(node, data);
+        StringBuilder ret = new StringBuilder(
+                "if (" + node.jjtGetChild(0).jjtAccept(this, data) + ") {" + node.jjtGetChild(1).jjtAccept(this, data));
+        ret.append("}");
+        ((CContext) data).statement_end_sc = false;
+        return ret;
     }
 
     public Object visit(ASTIterationStatement node, Object data) {
@@ -306,12 +310,17 @@ public class CVisitor implements CParserVisitor {
     public Object visit(ASTJumpStatement node, Object data) {
         StringBuilder sb = new StringBuilder("");
 
-        if (node.jjtGetNumChildren() > 0 && node.jjtGetChild(0) instanceof ASTExpression) {
+        if (node.choice == 2) {
+            return "break";
+        } else if (node.choice == 3) {
+            return "continue";
+        } else if (node.choice == 4) {
             ((CContext) data).statement_end_sc = false;
             sb.append(node.jjtGetChild(0).jjtAccept(this, data));
         } else {
             sb.append(defaultVisit(node, data));
         }
+
         return sb.toString();
     }
 
@@ -399,11 +408,13 @@ public class CVisitor implements CParserVisitor {
     }
 
     public Object visit(ASTUnaryExpression node, Object data) {
-        return defaultSpacedVisit(node, data, " ", false);
+        String visit = (String) defaultVisit(node, data);
-    }
 
-    public Object visit(ASTUnaryOperator node, Object data) {
+        if (node.choice > 1) {
-        return defaultVisit(node, data);
+            return "(" + visit + ")";
+        } else {
+            return visit;
+        }
     }
 
     public Object visit(ASTPostfixExpression node, Object data) {
@@ -422,6 +433,12 @@ public class CVisitor implements CParserVisitor {
             sb.append(node.jjtGetChild(1).jjtAccept(this, data));
             sb.append(")");
 
+            return sb.toString();
+        } else if (node.choice == 3) {
+            /* Field access */
+            sb.append(".");
+            sb.append(node.jjtGetChild(1).jjtAccept(this, data));
+
             return sb.toString();
         }
 

src/main/java/ghidrust/decompiler/parser/c/gen/ASTJumpStatement.java

@@ -4,6 +4,8 @@ package ghidrust.decompiler.parser.c.gen;
 /* JavaCCOptions:MULTI=true,NODE_USES_PARSER=false,VISITOR=true,TRACK_TOKENS=false,NODE_PREFIX=AST,NODE_EXTENDS=,NODE_FACTORY=,SUPPORT_CLASS_VISIBILITY_PUBLIC=true */
 public
 class ASTJumpStatement extends SimpleNode {
+  public int choice;
+  
   public ASTJumpStatement(int id) {
     super(id);
   }

src/main/java/ghidrust/decompiler/parser/c/gen/ASTUnaryExpression.java

@@ -4,6 +4,8 @@ package ghidrust.decompiler.parser.c.gen;
 /* JavaCCOptions:MULTI=true,NODE_USES_PARSER=false,VISITOR=true,TRACK_TOKENS=false,NODE_PREFIX=AST,NODE_EXTENDS=,NODE_FACTORY=,SUPPORT_CLASS_VISIBILITY_PUBLIC=true */
 public
 class ASTUnaryExpression extends SimpleNode {
+  public int choice;
+  
   public ASTUnaryExpression(int id) {
     super(id);
   }

src/main/java/ghidrust/decompiler/parser/c/gen/ASTUnaryOperator.java

@@ -1,23 +0,0 @@
-package ghidrust.decompiler.parser.c.gen;
-
-/* Generated By:JJTree: Do not edit this line. ASTUnaryOperator.java Version 7.0 */
-/* JavaCCOptions:MULTI=true,NODE_USES_PARSER=false,VISITOR=true,TRACK_TOKENS=false,NODE_PREFIX=AST,NODE_EXTENDS=,NODE_FACTORY=,SUPPORT_CLASS_VISIBILITY_PUBLIC=true */
-public
-class ASTUnaryOperator extends SimpleNode {
-  public ASTUnaryOperator(int id) {
-    super(id);
-  }
-
-  public ASTUnaryOperator(CParser p, int id) {
-    super(p, id);
-  }
-
-
-  /** Accept the visitor. **/
-  public Object jjtAccept(CParserVisitor visitor, Object data) {
-
-    return
-    visitor.visit(this, data);
-  }
-}
-/* JavaCC - OriginalChecksum=6c43a4b6e42256ad16599f05ce4392a5 (do not edit this line) */

src/main/java/ghidrust/decompiler/parser/c/gen/CParserDefaultVisitor.java

@@ -150,9 +150,6 @@ public class CParserDefaultVisitor implements CParserVisitor{
   public Object visit(ASTUnaryExpression node, Object data){
     return defaultVisit(node, data);
   }
-  public Object visit(ASTUnaryOperator node, Object data){
-    return defaultVisit(node, data);
-  }
   public Object visit(ASTPostfixExpression node, Object data){
     return defaultVisit(node, data);
   }
@@ -163,4 +160,4 @@ public class CParserDefaultVisitor implements CParserVisitor{
     return defaultVisit(node, data);
   }
 }
-/* JavaCC - OriginalChecksum=02bd2f1bbfbe0abbaf156b1dcc67f14c (do not edit this line) */
+/* JavaCC - OriginalChecksum=0df21b33819a468166075ef388879333 (do not edit this line) */

src/main/java/ghidrust/decompiler/parser/c/gen/CParserTreeConstants.java

@@ -50,10 +50,9 @@ public interface CParserTreeConstants
   public int JJTMULTIPLICATIVEEXPRESSION = 44;
   public int JJTCASTEXPRESSION = 45;
   public int JJTUNARYEXPRESSION = 46;
-  public int JJTUNARYOPERATOR = 47;
+  public int JJTPOSTFIXEXPRESSION = 47;
-  public int JJTPOSTFIXEXPRESSION = 48;
+  public int JJTPRIMARYEXPRESSION = 48;
-  public int JJTPRIMARYEXPRESSION = 49;
+  public int JJTARGUMENTEXPRESSIONLIST = 49;
-  public int JJTARGUMENTEXPRESSIONLIST = 50;
 
 
   public String[] jjtNodeName = {
@@ -104,10 +103,9 @@ public interface CParserTreeConstants
     "MultiplicativeExpression",
     "CastExpression",
     "UnaryExpression",
-    "UnaryOperator",
     "PostfixExpression",
     "PrimaryExpression",
     "ArgumentExpressionList",
   };
 }
-/* JavaCC - OriginalChecksum=6fdc7fd778ad43f052fadf52075bfbaa (do not edit this line) */
+/* JavaCC - OriginalChecksum=e23e00fb56ffad799524355d8342c899 (do not edit this line) */

src/main/java/ghidrust/decompiler/parser/c/gen/CParserVisitor.java

@@ -51,9 +51,8 @@ public interface CParserVisitor
   public Object visit(ASTMultiplicativeExpression node, Object data);
   public Object visit(ASTCastExpression node, Object data);
   public Object visit(ASTUnaryExpression node, Object data);
-  public Object visit(ASTUnaryOperator node, Object data);
   public Object visit(ASTPostfixExpression node, Object data);
   public Object visit(ASTPrimaryExpression node, Object data);
   public Object visit(ASTArgumentExpressionList node, Object data);
 }
-/* JavaCC - OriginalChecksum=1f05897c3d57918f597035227f8d60dd (do not edit this line) */
+/* JavaCC - OriginalChecksum=c11b3a8c5731c3cdcccff61a264d1174 (do not edit this line) */

src/main/java/ghidrust/decompiler/parser/c/gen/c.jj

@@ -1110,18 +1110,29 @@ void IterationStatement() :
 /*@egen*/
 }
 
-void JumpStatement() : {/*@bgen(jjtree) JumpStatement */
+void JumpStatement() :
-  ASTJumpStatement jjtn000 = new ASTJumpStatement(JJTJUMPSTATEMENT);
+{/*@bgen(jjtree) JumpStatement */
-  boolean jjtc000 = true;
+        ASTJumpStatement jjtn000 = new ASTJumpStatement(JJTJUMPSTATEMENT);
-  jjtree.openNodeScope(jjtn000);
+        boolean jjtc000 = true;
-/*@egen*/}
+        jjtree.openNodeScope(jjtn000);
+/*@egen*/
+	int choice = 0;
+}
 {/*@bgen(jjtree) JumpStatement */
         try {
 /*@egen*/
-	( <GOTO> Identifier() ";" |
+	( <GOTO> Identifier() ";" | { choice = 1; }
-	<CONTINUE> ";" |
+	<CONTINUE> ";" | { choice = 2; }
-	<BREAK> ";" |
+	<BREAK> ";" | { choice = 3; }
-	<RETURN> [ Expression() ] ";" )/*@bgen(jjtree)*/
+	<RETURN> [ Expression() ] ";" { choice = 4; } )/*@bgen(jjtree)*/
+        {
+          jjtree.closeNodeScope(jjtn000, true);
+          jjtc000 = false;
+        }
+/*@egen*/
+	{
+		jjtn000.choice = choice;
+	}/*@bgen(jjtree)*/
         } catch (Throwable jjte000) {
           if (jjtc000) {
             jjtree.clearNodeScope(jjtn000);
@@ -1460,7 +1471,7 @@ void EqualityExpression() : {/*@bgen(jjtree) EqualityExpression */
 {/*@bgen(jjtree) EqualityExpression */
         try {
 /*@egen*/
-	RelationalExpression() [ ( "==" | "!=" ) EqualityExpression() ]/*@bgen(jjtree)*/
+	RelationalExpression() [ EqualityOperator() EqualityExpression() ]/*@bgen(jjtree)*/
         } catch (Throwable jjte000) {
           if (jjtc000) {
             jjtree.clearNodeScope(jjtn000);
@@ -1483,6 +1494,34 @@ void EqualityExpression() : {/*@bgen(jjtree) EqualityExpression */
 /*@egen*/
 }
 
+void EqualityOperator()              :
+{/*@bgen(jjtree) StringToken */
+        ASTStringToken jjtn000 = new ASTStringToken(JJTSTRINGTOKEN);
+        boolean jjtc000 = true;
+        jjtree.openNodeScope(jjtn000);
+/*@egen*/
+	Token t;
+}
+{/*@bgen(jjtree) StringToken */
+        try {
+/*@egen*/
+	( t = "==" | t = "!=" )/*@bgen(jjtree)*/
+        {
+          jjtree.closeNodeScope(jjtn000, true);
+          jjtc000 = false;
+        }
+/*@egen*/
+	{
+		jjtn000.image = t.image;
+	}/*@bgen(jjtree)*/
+        } finally {
+          if (jjtc000) {
+            jjtree.closeNodeScope(jjtn000, true);
+          }
+        }
+/*@egen*/
+}
+
 void RelationalExpression() : {/*@bgen(jjtree) RelationalExpression */
   ASTRelationalExpression jjtn000 = new ASTRelationalExpression(JJTRELATIONALEXPRESSION);
   boolean jjtc000 = true;
@@ -1491,7 +1530,7 @@ void RelationalExpression() : {/*@bgen(jjtree) RelationalExpression */
 {/*@bgen(jjtree) RelationalExpression */
         try {
 /*@egen*/
-	ShiftExpression() [( "<" | ">" | "<=" | ">=" ) RelationalExpression()]/*@bgen(jjtree)*/
+	ShiftExpression() [ComparaisonOperator() RelationalExpression()]/*@bgen(jjtree)*/
         } catch (Throwable jjte000) {
           if (jjtc000) {
             jjtree.clearNodeScope(jjtn000);
@@ -1514,6 +1553,34 @@ void RelationalExpression() : {/*@bgen(jjtree) RelationalExpression */
 /*@egen*/
 }
 
+void ComparaisonOperator()              :
+{/*@bgen(jjtree) StringToken */
+        ASTStringToken jjtn000 = new ASTStringToken(JJTSTRINGTOKEN);
+        boolean jjtc000 = true;
+        jjtree.openNodeScope(jjtn000);
+/*@egen*/
+	Token t;
+}
+{/*@bgen(jjtree) StringToken */
+        try {
+/*@egen*/
+	( t = "<" | t = ">" | t = "<=" | t = ">="  )/*@bgen(jjtree)*/
+        {
+          jjtree.closeNodeScope(jjtn000, true);
+          jjtc000 = false;
+        }
+/*@egen*/
+	{
+		jjtn000.image = t.image;
+	}/*@bgen(jjtree)*/
+        } finally {
+          if (jjtc000) {
+            jjtree.closeNodeScope(jjtn000, true);
+          }
+        }
+/*@egen*/
+}
+
 void ShiftExpression() : {/*@bgen(jjtree) ShiftExpression */
   ASTShiftExpression jjtn000 = new ASTShiftExpression(JJTSHIFTEXPRESSION);
   boolean jjtc000 = true;
@@ -1667,19 +1734,30 @@ void CastExpression() : {/*@bgen(jjtree) CastExpression */
 /*@egen*/
 }
 
-void UnaryExpression() : {/*@bgen(jjtree) UnaryExpression */
+void UnaryExpression() :
-  ASTUnaryExpression jjtn000 = new ASTUnaryExpression(JJTUNARYEXPRESSION);
+{/*@bgen(jjtree) UnaryExpression */
-  boolean jjtc000 = true;
+        ASTUnaryExpression jjtn000 = new ASTUnaryExpression(JJTUNARYEXPRESSION);
-  jjtree.openNodeScope(jjtn000);
+        boolean jjtc000 = true;
-/*@egen*/}
+        jjtree.openNodeScope(jjtn000);
+/*@egen*/
+	int choice = 0;
+}
 {/*@bgen(jjtree) UnaryExpression */
         try {
 /*@egen*/
-	( LOOKAHEAD(3) PostfixExpression() |
+	( LOOKAHEAD(3) PostfixExpression() { choice = 1; } |
-	"++" UnaryExpression() |
+	"++" UnaryExpression() { choice = 2; } |
-	"--" UnaryExpression() |
+	"--" UnaryExpression() { choice = 3; } |
-	UnaryOperator() CastExpression() |
+	UnaryOperator() CastExpression() { choice = 4; } |
-	<SIZEOF> ( LOOKAHEAD(UnaryExpression() ) UnaryExpression() | "(" TypeName() ")" ) )/*@bgen(jjtree)*/
+	<SIZEOF> ( LOOKAHEAD(UnaryExpression() ) UnaryExpression() { choice = 5; } | "(" TypeName() ")" ) { choice = 6; } )/*@bgen(jjtree)*/
+        {
+          jjtree.closeNodeScope(jjtn000, true);
+          jjtc000 = false;
+        }
+/*@egen*/
+	{
+		jjtn000.choice = choice;
+	}/*@bgen(jjtree)*/
         } catch (Throwable jjte000) {
           if (jjtc000) {
             jjtree.clearNodeScope(jjtn000);
@@ -1702,15 +1780,26 @@ void UnaryExpression() : {/*@bgen(jjtree) UnaryExpression */
 /*@egen*/
 }
 
-void UnaryOperator() : {/*@bgen(jjtree) UnaryOperator */
+void UnaryOperator()              :
-  ASTUnaryOperator jjtn000 = new ASTUnaryOperator(JJTUNARYOPERATOR);
+{/*@bgen(jjtree) StringToken */
-  boolean jjtc000 = true;
+        ASTStringToken jjtn000 = new ASTStringToken(JJTSTRINGTOKEN);
-  jjtree.openNodeScope(jjtn000);
+        boolean jjtc000 = true;
-/*@egen*/}
+        jjtree.openNodeScope(jjtn000);
-{/*@bgen(jjtree) UnaryOperator */
+/*@egen*/
+	Token t;
+}
+{/*@bgen(jjtree) StringToken */
         try {
 /*@egen*/
-	( "&" | "*" | "+" | "-" | "~" | "!" )/*@bgen(jjtree)*/
+	( t = "&" | t = "*" | t = "+" | t = "-" | t = "~" | t = "!" )/*@bgen(jjtree)*/
+        {
+          jjtree.closeNodeScope(jjtn000, true);
+          jjtc000 = false;
+        }
+/*@egen*/
+	{
+		jjtn000.image = t.image;
+	}/*@bgen(jjtree)*/
         } finally {
           if (jjtc000) {
             jjtree.closeNodeScope(jjtn000, true);

src/main/java/ghidrust/decompiler/parser/c/gen/c.jjt

@@ -343,12 +343,18 @@ void IterationStatement() :
 	}
 }
 
-void JumpStatement() : {}
+void JumpStatement() :
 {
-	( <GOTO> Identifier() ";" |
+	int choice = 0;
-	<CONTINUE> ";" |
+}
-	<BREAK> ";" |
+{
-	<RETURN> [ Expression() ] ";" )
+	( <GOTO> Identifier() ";" | { choice = 1; }
+	<CONTINUE> ";" | { choice = 2; }
+	<BREAK> ";" | { choice = 3; }
+	<RETURN> [ Expression() ] ";" { choice = 4; } )
+	{
+		jjtThis.choice = choice;
+	}
 }
 
 void Expression() : {}
@@ -410,12 +416,34 @@ void ANDExpression() : {}
 
 void EqualityExpression() : {}
 {
-	RelationalExpression() [ ( "==" | "!=" ) EqualityExpression() ]
+	RelationalExpression() [ EqualityOperator() EqualityExpression() ]
+}
+
+void EqualityOperator() #StringToken :
+{
+	Token t;
+}
+{
+	( t = "==" | t = "!=" )
+	{
+		jjtThis.image = t.image;
+	}
 }
 
 void RelationalExpression() : {}
 {
-	ShiftExpression() [( "<" | ">" | "<=" | ">=" ) RelationalExpression()]
+	ShiftExpression() [ComparaisonOperator() RelationalExpression()]
+}
+
+void ComparaisonOperator() #StringToken :
+{
+	Token t;
+}
+{
+	( t = "<" | t = ">" | t = "<=" | t = ">="  )
+	{
+		jjtThis.image = t.image;
+	}
 }
 
 void ShiftExpression() : {}
@@ -450,18 +478,30 @@ void CastExpression() : {}
 	UnaryExpression() )
 }
 
-void UnaryExpression() : {}
+void UnaryExpression() :
 {
-	( LOOKAHEAD(3) PostfixExpression() |
+	int choice = 0;
-	"++" UnaryExpression() |
+}
-	"--" UnaryExpression() |
+{
-	UnaryOperator() CastExpression() |
+	( LOOKAHEAD(3) PostfixExpression() { choice = 1; } |
-	<SIZEOF> ( LOOKAHEAD(UnaryExpression() ) UnaryExpression() | "(" TypeName() ")" ) )
+	"++" UnaryExpression() { choice = 2; } |
+	"--" UnaryExpression() { choice = 3; } |
+	UnaryOperator() CastExpression() { choice = 4; } |
+	<SIZEOF> ( LOOKAHEAD(UnaryExpression() ) UnaryExpression() { choice = 5; } | "(" TypeName() ")" ) { choice = 6; } )
+	{
+		jjtThis.choice = choice;
+	}
 }
 
-void UnaryOperator() : {}
+void UnaryOperator() #StringToken :
 {
-	( "&" | "*" | "+" | "-" | "~" | "!" )
+	Token t;
+}
+{
+	( t = "&" | t = "*" | t = "+" | t = "-" | t = "~" | t = "!" )
+	{
+		jjtThis.image = t.image;
+	}
 }
 
 void PostfixExpression() : {

src/main/java/ghidrust/decompiler/parser/generate.sh

@@ -4,7 +4,7 @@
 
 cd c/gen
 
-BACKUP_FILES="ASTPostfixExpression ASTIterationStatement \
+BACKUP_FILES="ASTPostfixExpression ASTIterationStatement ASTUnaryExpression ASTJumpStatement \
 $(ls -1 AST*Token.java | cut -d. -f1 | tr '\n' ' ')"
 
 for file in $BACKUP_FILES; do