mirror of
https://github.com/DMaroo/GhidRust.git
synced 2025-10-06 04:53:57 +02:00
Add C to Rust transpiler
* Add grammar for C and transpile it to Rust code * Add `generate.sh` to generate the JavaCC and JJTree files * Update `build.sh`
This commit is contained in:
Dhruv Maroo
338
src/main/java/ghidrust/decompiler/parser/c/CVisitor.java
Normal file
338
src/main/java/ghidrust/decompiler/parser/c/CVisitor.java
Normal file
@@ -0,0 +1,338 @@
|
||||
package ghidrust.decompiler.parser.c;
|
||||
|
||||
import ghidrust.decompiler.parser.c.gen.*;
|
||||
import java.util.HashMap;
|
||||
|
||||
/* Generated By:JavaCC: Do not edit this line. CParserDefaultVisitor.java Version 7.0.9 */
|
||||
public class CVisitor implements CParserVisitor {
|
||||
HashMap<String, String> type_map = new HashMap<String, String>();
|
||||
|
||||
int indent_level = 0;
|
||||
|
||||
public CVisitor() {
|
||||
type_map.put("void", "");
|
||||
type_map.put("int", "i32");
|
||||
|
||||
/* Not entirely true, but works for now */
|
||||
type_map.put("char", "char");
|
||||
|
||||
type_map.put("short", "i16");
|
||||
type_map.put("long", "i32");
|
||||
type_map.put("float", "f32");
|
||||
type_map.put("double", "f64");
|
||||
type_map.put("signed", "i32");
|
||||
type_map.put("unsigned", "u32");
|
||||
type_map.put("code", "code");
|
||||
}
|
||||
|
||||
public Object defaultVisit(SimpleNode node, Object data) {
|
||||
StringBuilder sb = new StringBuilder("");
|
||||
|
||||
int child_count = node.jjtGetNumChildren();
|
||||
for (int i = 0; i < child_count; i++) {
|
||||
Node child = node.jjtGetChild(i);
|
||||
String ret = (String) child.jjtAccept(this, data);
|
||||
if (ret != null) {
|
||||
sb.append(ret);
|
||||
}
|
||||
}
|
||||
|
||||
return sb.toString();
|
||||
}
|
||||
|
||||
public Object defaultSpacedVisit(SimpleNode node, Object data) {
|
||||
StringBuilder sb = new StringBuilder("");
|
||||
|
||||
int child_count = node.jjtGetNumChildren();
|
||||
for (int i = 0; i < child_count; i++) {
|
||||
Node child = node.jjtGetChild(i);
|
||||
String ret = (String) child.jjtAccept(this, data);
|
||||
if (ret != null) {
|
||||
sb.append(ret);
|
||||
if (!ret.equals("")) {
|
||||
sb.append(" ");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return sb.toString();
|
||||
}
|
||||
|
||||
public Object visit(SimpleNode node, Object data) {
|
||||
return node.jjtAccept(this, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTStringToken node, Object data) {
|
||||
return node.getValue();
|
||||
}
|
||||
|
||||
public Object visit(ASTGhostStringToken node, Object data) {
|
||||
return "";
|
||||
}
|
||||
|
||||
public Object visit(ASTTypeStringToken node, Object data) {
|
||||
String typename = node.getValue();
|
||||
|
||||
if (type_map.containsKey(typename)) {
|
||||
return type_map.get(typename);
|
||||
} else {
|
||||
return typename;
|
||||
}
|
||||
}
|
||||
|
||||
public Object visit(ASTFunctionDefinition node, Object data) {
|
||||
node.dump("");
|
||||
StringBuilder rust_code = new StringBuilder("");
|
||||
|
||||
rust_code.append("fn ");
|
||||
rust_code.append(node.jjtGetChild(1).jjtAccept(this, data));
|
||||
rust_code.append("-> ");
|
||||
rust_code.append(node.jjtGetChild(0).jjtAccept(this, data));
|
||||
rust_code.append(" {\n");
|
||||
indent_level++;
|
||||
rust_code.append(node.jjtGetChild(2).jjtAccept(this, data));
|
||||
rust_code.append("\n}\n");
|
||||
indent_level--;
|
||||
|
||||
return rust_code.toString();
|
||||
}
|
||||
|
||||
public Object visit(ASTDeclaration node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTDeclarationList node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTDeclarationSpecifiers node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTInitDeclaratorList node, Object data) {
|
||||
if (node.jjtGetNumChildren() == 1) {
|
||||
return node.jjtGetChild(0).jjtAccept(this, data);
|
||||
} else {
|
||||
StringBuilder sb = new StringBuilder("&");
|
||||
sb.append(node.jjtGetChild(0).jjtAccept(this, data));
|
||||
sb.append(node.jjtGetChild(1).jjtAccept(this, data));
|
||||
return sb.toString();
|
||||
}
|
||||
}
|
||||
|
||||
public Object visit(ASTInitDeclarator node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTSpecifierQualifierList node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTDeclarator node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTDirectDeclarator node, Object data) {
|
||||
int child_num = node.jjtGetNumChildren();
|
||||
|
||||
StringBuilder sb = new StringBuilder("");
|
||||
for (int i = 0; i < child_num; i++) {
|
||||
Node child = node.jjtGetChild(i);
|
||||
String child_val = (String) child.jjtAccept(this, data);
|
||||
|
||||
if (child instanceof ASTDeclarator || child instanceof ASTParameterTypeList
|
||||
|| child instanceof ASTIdentifierList) {
|
||||
sb.append("(");
|
||||
sb.append(child_val);
|
||||
sb.append(") ");
|
||||
} else if (child instanceof ASTConstantExpression) {
|
||||
sb.append("[");
|
||||
sb.append(child_val);
|
||||
sb.append("] ");
|
||||
} else {
|
||||
sb.append(child_val);
|
||||
}
|
||||
}
|
||||
|
||||
return sb.toString();
|
||||
}
|
||||
|
||||
public Object visit(ASTPointer node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTTypeQualifierList node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTParameterTypeList node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTParameterList node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTParameterDeclaration node, Object data) {
|
||||
StringBuilder param = new StringBuilder((String) defaultSpacedVisit(node, data));
|
||||
/* Get rid of the trailing space */
|
||||
param.setLength(param.length() - 1);
|
||||
return param.toString();
|
||||
}
|
||||
|
||||
public Object visit(ASTIdentifierList node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTInitializer node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTInitializerList node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTTypeName node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTAbstractDeclarator node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTDirectAbstractDeclarator node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTStatement node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTLabeledStatement node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTExpressionStatement node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTCompoundStatement node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTStatementList node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTSelectionStatement node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTIterationStatement node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTJumpStatement node, Object data) {
|
||||
StringBuilder sb = new StringBuilder("");
|
||||
for (int i = 0; i < indent_level; i++) {
|
||||
sb.append("\t");
|
||||
}
|
||||
|
||||
if (node.jjtGetNumChildren() == 0 || node.jjtGetChild(0) instanceof ASTExpression) {
|
||||
sb.append("return ");
|
||||
sb.append(node.jjtGetChild(0).jjtAccept(this, data));
|
||||
sb.append(";");
|
||||
} else {
|
||||
sb.append(defaultVisit(node, data));
|
||||
}
|
||||
return sb.toString();
|
||||
}
|
||||
|
||||
public Object visit(ASTExpression node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTAssignmentExpression node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTAssignmentOperator node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTConditionalExpression node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTConstantExpression node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTLogicalORExpression node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTLogicalANDExpression node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTInclusiveORExpression node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTExclusiveORExpression node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTANDExpression node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTEqualityExpression node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTRelationalExpression node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTShiftExpression node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTAdditiveExpression node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTMultiplicativeExpression node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTCastExpression node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
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);
|
||||
}
|
||||
|
||||
public Object visit(ASTPrimaryExpression node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
|
||||
public Object visit(ASTArgumentExpressionList node, Object data) {
|
||||
return defaultVisit(node, data);
|
||||
}
|
||||
}
|
||||
/*
|
||||
* JavaCC - OriginalChecksum=fd39d82df2a1b516298b94d6f4a5e997 (do not edit this
|
||||
* line)
|
||||
*/
|
||||
Reference in New Issue
Block a user