Class: Ripper

Inherits:

Object

• Object
• Ripper

Defined in:

parse.c

Constant Summary

Version =

rb_usascii_str_new2(RIPPER_VERSION)

Instance Method Summary

• #column ⇒ Integer

  Return column number of current parsing line.

• #encoding ⇒ Encoding

  Return encoding of the source.

• #end_seen? ⇒ Boolean

  Return true if parsed source ended by _END_.

• #filename ⇒ String

  Return current parsing filename.

• #new(src, filename = "(ripper)", lineno = 1) ⇒ Object constructor

  Create a new Ripper object.

• #lineno ⇒ Integer

  Return line number of current parsing line.

• #parse ⇒ Object

  Start parsing and returns the value of the root action.

• #yydebug ⇒ Boolean

  Get yydebug.

• #yydebug=(flag) ⇒ Object

  Set yydebug.

Constructor Details

#new(src, filename = "(ripper)", lineno = 1) ⇒ Object

Create a new Ripper object. src must be a String, an IO, or an Object which has #gets method.

This method does not starts parsing. See also Ripper#parse and Ripper.parse.

# File 'parse.c'

static VALUE
ripper_initialize(int argc, VALUE *argv, VALUE self)
{
struct parser_params *parser;
VALUE src, fname, lineno;

TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser);
rb_scan_args(argc, argv, "12", &src, &fname, &lineno);
if (rb_obj_respond_to(src, ripper_id_gets, 0)) {
    parser->parser_lex_gets = ripper_lex_get_generic;
}

Instance Method Details

#column ⇒ Integer

Return column number of current parsing line. This number starts from 0.

Returns:

• (Integer)

# File 'parse.c'

static VALUE
ripper_column(VALUE self)
{
struct parser_params *parser;
long col;

TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser);
if (!ripper_initialized_p(parser)) {
    rb_raise(rb_eArgError, "method called for uninitialized object");
}

#encoding ⇒ Encoding

Return encoding of the source.

Returns:

• (Encoding)

# File 'parse.c'

VALUE
rb_parser_encoding(VALUE vparser)
{
    struct parser_params *parser;

    TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser);
    return rb_enc_from_encoding(parser->enc);
}

#end_seen? ⇒ Boolean

Return true if parsed source ended by _END_.

Returns:

• (Boolean)

# File 'parse.c'

VALUE
rb_parser_end_seen_p(VALUE vparser)
{
    struct parser_params *parser;

    TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser);
    return ruby__end__seen ? Qtrue : Qfalse;
}

#filename ⇒ String

Return current parsing filename.

Returns:

• (String)

# File 'parse.c'

static VALUE
ripper_filename(VALUE self)
{
struct parser_params *parser;

TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser);
if (!ripper_initialized_p(parser)) {
    rb_raise(rb_eArgError, "method called for uninitialized object");
}

#lineno ⇒ Integer

Return line number of current parsing line. This number starts from 1.

Returns:

• (Integer)

# File 'parse.c'

static VALUE
ripper_lineno(VALUE self)
{
struct parser_params *parser;

TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser);
if (!ripper_initialized_p(parser)) {
    rb_raise(rb_eArgError, "method called for uninitialized object");
}

#parse ⇒ Object

Start parsing and returns the value of the root action.

# File 'parse.c'

static VALUE
ripper_parse(VALUE self)
{
struct parser_params *parser;

TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser);
if (!ripper_initialized_p(parser)) {
    rb_raise(rb_eArgError, "method called for uninitialized object");
}

#yydebug ⇒ Boolean

Get yydebug.

Returns:

• (Boolean)

# File 'parse.c'

VALUE
rb_parser_get_yydebug(VALUE self)
{
    struct parser_params *parser;

    TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser);
    return yydebug ? Qtrue : Qfalse;
}

#yydebug=(flag) ⇒ Object

Set yydebug.

# File 'parse.c'

VALUE
rb_parser_set_yydebug(VALUE self, VALUE flag)
{
    struct parser_params *parser;

    TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser);
    yydebug = RTEST(flag);
    return flag;
}