161 lines
3.6 KiB
Java
161 lines
3.6 KiB
Java
package cd.util.debug;
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import cd.ir.Ast;
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import cd.ir.Ast.Assign;
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import cd.ir.Ast.BinaryOp;
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import cd.ir.Ast.BooleanConst;
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import cd.ir.Ast.BuiltInRead;
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import cd.ir.Ast.BuiltInWrite;
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import cd.ir.Ast.BuiltInWriteln;
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import cd.ir.Ast.Cast;
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import cd.ir.Ast.ClassDecl;
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import cd.ir.Ast.Field;
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import cd.ir.Ast.IfElse;
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import cd.ir.Ast.Index;
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import cd.ir.Ast.IntConst;
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import cd.ir.Ast.MethodDecl;
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import cd.ir.Ast.NewArray;
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import cd.ir.Ast.NewObject;
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import cd.ir.Ast.Nop;
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import cd.ir.Ast.NullConst;
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import cd.ir.Ast.Seq;
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import cd.ir.Ast.ThisRef;
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import cd.ir.Ast.UnaryOp;
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import cd.ir.Ast.Var;
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import cd.ir.Ast.VarDecl;
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import cd.ir.Ast.WhileLoop;
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import cd.ir.AstVisitor;
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public class AstOneLine {
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public static String toString(Ast ast) {
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return new Visitor().visit(ast, null);
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}
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protected static class Visitor extends AstVisitor<String, Void> {
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public String str(Ast ast) {
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return ast.accept(this, null);
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}
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@Override
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public String assign(Assign ast, Void arg) {
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return String.format("%s = %s", str(ast.left()), str(ast.right()));
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}
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@Override
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public String binaryOp(BinaryOp ast, Void arg) {
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return String.format("(%s %s %s)",
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str(ast.left()), ast.operator.repr, str(ast.right()));
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}
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@Override
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public String booleanConst(BooleanConst ast, Void arg) {
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return Boolean.toString(ast.value);
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}
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@Override
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public String builtInRead(BuiltInRead ast, Void arg) {
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return String.format("read()");
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}
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@Override
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public String builtInWrite(BuiltInWrite ast, Void arg) {
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return String.format("write(%s)", str(ast.arg()));
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}
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@Override
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public String builtInWriteln(BuiltInWriteln ast, Void arg) {
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return String.format("writeln()");
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}
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@Override
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public String cast(Cast ast, Void arg) {
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return String.format("(%s)(%s)", ast.typeName, str(ast.arg()));
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}
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@Override
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public String classDecl(ClassDecl ast, Void arg) {
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return String.format("class %s {...}", ast.name);
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}
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@Override
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public String field(Field ast, Void arg) {
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return String.format("%s.%s", str(ast.arg()), ast.fieldName);
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}
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@Override
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public String ifElse(IfElse ast, Void arg) {
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return String.format("if (%s) {...} else {...}", str(ast.condition()));
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}
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@Override
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public String index(Index ast, Void arg) {
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return String.format("%s[%s]", str(ast.left()), str(ast.right()));
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}
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@Override
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public String intConst(IntConst ast, Void arg) {
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return Integer.toString(ast.value);
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}
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@Override
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public String methodDecl(MethodDecl ast, Void arg) {
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return String.format("%s %s(...) {...}", ast.returnType, ast.name);
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}
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@Override
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public String newArray(NewArray ast, Void arg) {
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return String.format("new %s[%s]", ast.typeName, str(ast.arg()));
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}
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@Override
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public String newObject(NewObject ast, Void arg) {
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return String.format("new %s()", ast.typeName);
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}
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@Override
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public String nop(Nop ast, Void arg) {
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return "nop";
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}
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@Override
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public String nullConst(NullConst ast, Void arg) {
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return "null";
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}
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@Override
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public String seq(Seq ast, Void arg) {
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return "(...)";
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}
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@Override
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public String thisRef(ThisRef ast, Void arg) {
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return "this";
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}
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@Override
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public String unaryOp(UnaryOp ast, Void arg) {
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return String.format("%s(%s)", ast.operator.repr, str(ast.arg()));
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}
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@Override
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public String var(Var ast, Void arg) {
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{
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return ast.name;
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}
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}
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@Override
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public String varDecl(VarDecl ast, Void arg) {
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return String.format("%s %s", ast.type, ast.name);
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}
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@Override
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public String whileLoop(WhileLoop ast, Void arg) {
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return String.format("while (%s) {...}", str(ast.condition()));
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}
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}
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}
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