@Override
public DataType visitAtom(@NotNull PythonParser.AtomContext ctx) {
// System.out.println("Zz" + ctx.NAME() + ctx.STRING());
if (ctx.test() != null) { // 1
return visitTest(ctx.test());
} else if (ctx.STRING().size() > 0) { // 7,8,9
String ss = "";
for (TerminalNode s : ctx.STRING()) {
ss += s.getText();
}
mv.visitLdcInsn(ss.length());
mv.visitIntInsn(NEWARRAY, T_CHAR);
int tempIndex = 0;
for (int i = 0; i < ss.length(); i++) {
if (!("\"".equals(ss.substring(i, i + 1))) && !("\'".equals(ss.substring(i, i + 1)))) {
mv.visitInsn(DUP);
mv.visitLdcInsn(tempIndex);
mv.visitLdcInsn(ss.charAt(i));
mv.visitInsn(CASTORE);
tempIndex++;
}
}
if (ctx.LBRACK() != null) {
if (Integer.parseInt(ctx.INT().getText()) > tempIndex - 1) {
throw new CompileException(
String.format(
"Index out of bounds exception for string %s with index %s",
ss, Integer.parseInt(ctx.INT().getText())));
}
mv.visitLdcInsn(Integer.parseInt(ctx.INT().getText()));
mv.visitInsn(CALOAD);
mv.visitMethodInsn(
INVOKESTATIC,
Type.getType(String.class).getInternalName(),
"valueOf",
"(C)Ljava/lang/String;",
false);
return new StringType(1);
} else {
mv.visitMethodInsn(
INVOKESTATIC,
Type.getType(String.class).getInternalName(),
"valueOf",
"([C)Ljava/lang/String;",
false);
return new StringType(ss.length());
}
} else if (!ctx.NAME().isEmpty()) { // 3,4,5
DataType type = null;
// System.out.println("GG" + ctx.getText() + "GG");
String varName = ctx.NAME().get(0).getText();
if (scope.isLocalVariable(varName)) {
if (ctx.LBRACK() != null) { // 4,5
type = scope.getLocalVariableType(varName);
if (!(type instanceof StringType)) {
throw new CompileException(String.format("Trying to take index not from string!!"));
}
mv.visitVarInsn(type.isPrimitive() ? ILOAD : ALOAD, scope.getLocalVariableIndex(varName));
if (ctx.INT() != null) {
mv.visitMethodInsn(
INVOKEVIRTUAL,
Type.getType(String.class).getInternalName(),
"toCharArray",
"()[C",
false);
if (Integer.parseInt(ctx.INT().getText()) > type.getSize()) {
throw new CompileException(String.format("Index out of bounds exception!"));
}
mv.visitLdcInsn(Integer.parseInt(ctx.INT().getText()));
mv.visitInsn(CALOAD);
mv.visitMethodInsn(
INVOKESTATIC,
Type.getType(String.class).getInternalName(),
"valueOf",
"(C)Ljava/lang/String;",
false);
return new StringType(1);
} else if (ctx.NAME(1) != null) {
varName = ctx.NAME(1).getText();
type = scope.getLocalVariableType(ctx.NAME(1).getText());
if (!type.isInteger()) {
throw new CompileException(
String.format("Trying to take index from string not with int!"));
} else {
Label okLabel = new Label();
mv.visitMethodInsn(
INVOKEVIRTUAL,
Type.getType(String.class).getInternalName(),
"toCharArray",
"()[C",
false);
mv.visitVarInsn(ILOAD, scope.getLocalVariableIndex(ctx.NAME(1).getText()));
mv.visitInsn(DUP);
mv.visitLdcInsn(type.getSize());
mv.visitInsn(SWAP);
mv.visitJumpInsn(IF_ICMPGT, okLabel);
mv.visitLabel(okLabel);
mv.visitInsn(CALOAD);
mv.visitMethodInsn(
INVOKESTATIC,
Type.getType(String.class).getInternalName(),
"valueOf",
"(C)Ljava/lang/String;",
false);
// TODO out of bounds a[b]
// mv.visitLdcInsn("Out of bounds!");
// mv.visitMethodInsn(INVOKESPECIAL,
// "java/lang/CompilerException", "<init>",
// "(Ljava/lang/String;)V", false);
return new StringType(1);
}
} else {
throw new CompileException(String.format("Unidentified operation"));
}
} else { // 3
type = scope.getLocalVariableType(varName);
mv.visitVarInsn(type.isPrimitive() ? ILOAD : ALOAD, scope.getLocalVariableIndex(varName));
}
} else if (scope.isGlobalVariable(varName)) {
if (ctx.LBRACK() != null) { // 4,5
type = scope.getGlobalVariableType(varName);
if (!(type instanceof StringType)) {
throw new CompileException(String.format("Trying to take index not from string!!"));
}
mv.visitFieldInsn(
GETSTATIC, scope.getClassName(), varName, type.getType().getDescriptor());
if (ctx.INT() != null) {
mv.visitMethodInsn(
INVOKEVIRTUAL,
Type.getType(String.class).getInternalName(),
"toCharArray",
"()[C",
false);
if (Integer.parseInt(ctx.INT().getText()) > type.getSize()) {
throw new CompileException(String.format("Index out of bounds exception!"));
}
mv.visitLdcInsn(Integer.parseInt(ctx.INT().getText()));
mv.visitInsn(CALOAD);
mv.visitMethodInsn(
INVOKESTATIC,
Type.getType(String.class).getInternalName(),
"valueOf",
"(C)Ljava/lang/String;",
false);
return new StringType(1);
} else if (ctx.NAME(1) != null) {
varName = ctx.NAME(1).getText();
type = scope.getLocalVariableType(ctx.NAME(1).getText());
if (!type.isInteger()) {
throw new CompileException(
String.format("Trying to take index from string not with int!"));
} else {
Label okLabel = new Label();
mv.visitMethodInsn(
INVOKEVIRTUAL,
Type.getType(String.class).getInternalName(),
"toCharArray",
"()[C",
false);
mv.visitVarInsn(ILOAD, scope.getLocalVariableIndex(ctx.NAME(1).getText()));
mv.visitInsn(DUP);
mv.visitLdcInsn(type.getSize());
mv.visitInsn(SWAP);
mv.visitJumpInsn(IF_ICMPGT, okLabel);
mv.visitLabel(okLabel);
mv.visitInsn(CALOAD);
mv.visitMethodInsn(
INVOKESTATIC,
Type.getType(String.class).getInternalName(),
"valueOf",
"(C)Ljava/lang/String;",
false);
// TODO out of bounds a[b]
// mv.visitLdcInsn("Out of bounds!");
// mv.visitMethodInsn(INVOKESPECIAL,
// "java/lang/CompilerException", "<init>",
// "(Ljava/lang/String;)V", false);
return new StringType(1);
}
} else {
throw new CompileException(String.format("Unidentified operation"));
}
} else { // 3
type = scope.getGlobalVariableType(varName);
mv.visitFieldInsn(
GETSTATIC, scope.getClassName(), varName, type.getType().getDescriptor());
}
}
return type;
// } else if (scope.isFunction)
} else if (ctx.INT() != null) { // 6
mv.visitLdcInsn(Integer.parseInt(ctx.INT().getText()));
return PrimitiveType.INTEGER;
} else if (ctx.BOOL() != null) { // 2
mv.visitInsn("False".equals(ctx.BOOL().getText()) ? ICONST_0 : ICONST_1);
return PrimitiveType.BOOLEAN;
} else {
throw new CompileException(String.format("Undefined thing to work with! %s", ctx.getText()));
}
}
@Override
public DataType visitExpr_stmt(@NotNull PythonParser.Expr_stmtContext ctx) {
if (ctx.power() != null) {
if (ctx.power().atom().NAME() != null && ctx.power().atom().STRING().size() == 0) {
String var = ctx.power().atom().NAME().get(0).getText();
if (ctx.power().atom().LBRACK() != null) {
if (scope.isLocalVariable(var)) {
if (!(scope.getLocalVariableType(var) instanceof StringType)) {
throw new CompileException(String.format("Trying to take index not from string!"));
}
} else if (scope.isGlobalVariable(var)) {
if (!(scope.getGlobalVariableType(var) instanceof StringType)) {
throw new CompileException(String.format("Trying to take index not from string!"));
}
}
throw new CompileException(
String.format("Assigning to element of String is not implemented yet!"));
// if (ctx.power().atom().INT() != null) {
//
// } else {
//
// }
} else {
if (ctx.test() != null) {
if (ctx.power().trailer() != null) {
throw new CompileException(String.format("Can't assign to function!"));
}
DataType etype = visitTest(ctx.test());
if (scope.isLocalVariable(var)) {
// System.out.println("LOCAL" + var + "e" + etype + "e" +
// scope.getLocalVariableType(var) );
if (etype.equals(scope.getLocalVariableType(var))) {
// System.out.println("Type not changing!");
int opcode = scope.getLocalVariableType(var).isPrimitive() ? ISTORE : ASTORE;
mv.visitVarInsn(opcode, scope.getLocalVariableIndex(var));
} else {
// System.out.println("Type changing!");
scope.changeLocalVariableType(var, etype);
int opcode = etype.isPrimitive() ? ISTORE : ASTORE;
mv.visitVarInsn(opcode, scope.getLocalVariableIndex(var));
}
} else if (scope.isGlobalVariable(var)) {
DataType vtype = scope.getGlobalVariableType(var);
mv.visitFieldInsn(
PUTSTATIC, scope.getClassName(), var, vtype.getType().getDescriptor());
// } else if (scope.isFunctionDeclared(var)) { TODO
} else {
scope.addLocalVariable(var, etype);
int opcode = scope.getLocalVariableType(var).isPrimitive() ? ISTORE : ASTORE;
mv.visitVarInsn(opcode, scope.getLocalVariableIndex(var));
// throw new CompileException(String.format("Variable %s not found in context %s.",
// var, ctx.getText()));
}
return etype;
} else if (ctx.power().trailer() != null) { // is function
visitPower(ctx.power());
// if
// (!scope.isFunctionDeclared(ctx.power().atom().NAME(0).getText(),
// ctx.power().trailer().arglist().argument().size()))
// throw new CompileException(String.format("Function %s not
// defined.", var));
// else
// System.out.println("ACTION!");
} else if (scope.isLocalVariable(var)) {
return scope.getLocalVariableType(var);
} else if (scope.isGlobalVariable(var)) {
return scope.getGlobalVariableType(var);
} else throw new CompileException(String.format("Variable %s not defined.", var));
}
} else {
throw new CompileException(String.format("can't assign to operator"));
}
} else {
System.out.println("Something bad happened!");
}
return null;
}