1 files changed, 1119 insertions, 0 deletions

diff --git a/ruby_parser.c b/ruby_parser.c
new file mode 100644
index 0000000000..a96fc4974b
--- /dev/null
+++ b/ruby_parser.c
@@ -0,0 +1,1119 @@
+/* This is a wrapper for parse.y */
+
+#include "internal/parse.h"
+#include "internal/re.h"
+#include "internal/ruby_parser.h"
+
+#include "node.h"
+#include "rubyparser.h"
+#include "internal/error.h"
+
+#ifdef UNIVERSAL_PARSER
+
+#include "internal.h"
+#include "internal/array.h"
+#include "internal/bignum.h"
+#include "internal/compile.h"
+#include "internal/complex.h"
+#include "internal/encoding.h"
+#include "internal/gc.h"
+#include "internal/hash.h"
+#include "internal/io.h"
+#include "internal/rational.h"
+#include "internal/re.h"
+#include "internal/string.h"
+#include "internal/symbol.h"
+#include "internal/thread.h"
+
+#include "ruby/ractor.h"
+#include "ruby/ruby.h"
+#include "ruby/util.h"
+#include "internal.h"
+#include "vm_core.h"
+#include "symbol.h"
+
+#define parser_encoding const void
+
+RBIMPL_ATTR_FORMAT(RBIMPL_PRINTF_FORMAT, 6, 0)
+static VALUE
+syntax_error_append(VALUE exc, VALUE file, int line, int column,
+                    parser_encoding *enc, const char *fmt, va_list args)
+{
+    return rb_syntax_error_append(exc, file, line, column, enc, fmt, args);
+}
+
+static int
+local_defined(ID id, const void *p)
+{
+    return rb_local_defined(id, (const rb_iseq_t *)p);
+}
+
+static int
+dvar_defined(ID id, const void *p)
+{
+    return rb_dvar_defined(id, (const rb_iseq_t *)p);
+}
+
+static int
+is_usascii_enc(parser_encoding *enc)
+{
+    return rb_is_usascii_enc(enc);
+}
+
+static int
+is_local_id2(ID id)
+{
+    return is_local_id(id);
+}
+
+static int
+is_attrset_id2(ID id)
+{
+    return is_attrset_id(id);
+}
+
+static int
+is_notop_id2(ID id)
+{
+    return is_notop_id(id);
+}
+
+static VALUE
+enc_str_new(const char *ptr, long len, parser_encoding *enc)
+{
+    return rb_enc_str_new(ptr, len, enc);
+}
+
+static int
+enc_isalnum(OnigCodePoint c, parser_encoding *enc)
+{
+    return rb_enc_isalnum(c, enc);
+}
+
+static int
+enc_precise_mbclen(const char *p, const char *e, parser_encoding *enc)
+{
+    return rb_enc_precise_mbclen(p, e, enc);
+}
+
+static int
+mbclen_charfound_p(int len)
+{
+    return MBCLEN_CHARFOUND_P(len);
+}
+
+static int
+mbclen_charfound_len(int len)
+{
+    return MBCLEN_CHARFOUND_LEN(len);
+}
+
+static const char *
+enc_name(parser_encoding *enc)
+{
+    return rb_enc_name(enc);
+}
+
+static char *
+enc_prev_char(const char *s, const char *p, const char *e, parser_encoding *enc)
+{
+    return rb_enc_prev_char(s, p, e, enc);
+}
+
+static parser_encoding *
+enc_get(VALUE obj)
+{
+    return rb_enc_get(obj);
+}
+
+static int
+enc_asciicompat(parser_encoding *enc)
+{
+    return rb_enc_asciicompat(enc);
+}
+
+static parser_encoding *
+utf8_encoding(void)
+{
+    return rb_utf8_encoding();
+}
+
+static parser_encoding *
+ascii8bit_encoding(void)
+{
+    return rb_ascii8bit_encoding();
+}
+
+static int
+enc_codelen(int c, parser_encoding *enc)
+{
+    return rb_enc_codelen(c, enc);
+}
+
+static int
+enc_mbcput(unsigned int c, void *buf, parser_encoding *enc)
+{
+    return rb_enc_mbcput(c, buf, enc);
+}
+
+static parser_encoding *
+enc_from_index(int idx)
+{
+    return rb_enc_from_index(idx);
+}
+
+static int
+enc_isspace(OnigCodePoint c, parser_encoding *enc)
+{
+    return rb_enc_isspace(c, enc);
+}
+
+static ID
+intern3(const char *name, long len, parser_encoding *enc)
+{
+    return rb_intern3(name, len, enc);
+}
+
+static int
+enc_symname_type(const char *name, long len, parser_encoding *enc, unsigned int allowed_attrset)
+{
+    return rb_enc_symname_type(name, len, enc, allowed_attrset);
+}
+
+typedef struct {
+    struct parser_params *parser;
+    rb_encoding *enc;
+    NODE *succ_block;
+    const rb_code_location_t *loc;
+    rb_parser_assignable_func assignable;
+} reg_named_capture_assign_t;
+
+static int
+reg_named_capture_assign_iter(const OnigUChar *name, const OnigUChar *name_end,
+          int back_num, int *back_refs, OnigRegex regex, void *arg0)
+{
+    reg_named_capture_assign_t *arg = (reg_named_capture_assign_t*)arg0;
+    struct parser_params* p = arg->parser;
+    rb_encoding *enc = arg->enc;
+    const rb_code_location_t *loc = arg->loc;
+    long len = name_end - name;
+    const char *s = (const char *)name;
+
+    return rb_reg_named_capture_assign_iter_impl(p, s, len, enc, &arg->succ_block, loc, arg->assignable);
+}
+
+static NODE *
+reg_named_capture_assign(struct parser_params* p, VALUE regexp, const rb_code_location_t *loc,
+                         rb_parser_assignable_func assignable)
+{
+    reg_named_capture_assign_t arg;
+
+    arg.parser = p;
+    arg.enc = rb_enc_get(regexp);
+    arg.succ_block = 0;
+    arg.loc = loc;
+    arg.assignable = assignable;
+    onig_foreach_name(RREGEXP_PTR(regexp), reg_named_capture_assign_iter, &arg);
+
+    if (!arg.succ_block) return 0;
+    return RNODE_BLOCK(arg.succ_block)->nd_next;
+}
+
+static int
+rtest(VALUE obj)
+{
+    return (int)RB_TEST(obj);
+}
+
+static int
+nil_p(VALUE obj)
+{
+    return (int)NIL_P(obj);
+}
+
+static VALUE
+syntax_error_new(void)
+{
+    return rb_class_new_instance(0, 0, rb_eSyntaxError);
+}
+
+static void *
+memmove2(void *dest, const void *src, size_t t, size_t n)
+{
+    return memmove(dest, src, rbimpl_size_mul_or_raise(t, n));
+}
+
+static void *
+nonempty_memcpy(void *dest, const void *src, size_t t, size_t n)
+{
+    return ruby_nonempty_memcpy(dest, src, rbimpl_size_mul_or_raise(t, n));
+}
+
+static VALUE
+ruby_verbose2(void)
+{
+    return ruby_verbose;
+}
+
+static int *
+rb_errno_ptr2(void)
+{
+    return rb_errno_ptr();
+}
+
+static void *
+zalloc(size_t elemsiz)
+{
+    return ruby_xcalloc(1, elemsiz);
+}
+
+static void
+gc_guard(VALUE obj)
+{
+    RB_GC_GUARD(obj);
+}
+
+static VALUE
+arg_error(void)
+{
+    return rb_eArgError;
+}
+
+static VALUE
+static_id2sym(ID id)
+{
+    return (((VALUE)(id)<<RUBY_SPECIAL_SHIFT)|SYMBOL_FLAG);
+}
+
+static long
+str_coderange_scan_restartable(const char *s, const char *e, parser_encoding *enc, int *cr)
+{
+    return rb_str_coderange_scan_restartable(s, e, enc, cr);
+}
+
+static int
+enc_mbminlen(parser_encoding *enc)
+{
+    return rb_enc_mbminlen(enc);
+}
+
+static bool
+enc_isascii(OnigCodePoint c, parser_encoding *enc)
+{
+    return rb_enc_isascii(c, enc);
+}
+
+static OnigCodePoint
+enc_mbc_to_codepoint(const char *p, const char *e, parser_encoding *enc)
+{
+    const OnigUChar *up = RBIMPL_CAST((const OnigUChar *)p);
+    const OnigUChar *ue = RBIMPL_CAST((const OnigUChar *)e);
+
+    return ONIGENC_MBC_TO_CODE((rb_encoding *)enc, up, ue);
+}
+
+extern VALUE rb_eArgError;
+
+static const rb_parser_config_t rb_global_parser_config = {
+    .malloc = ruby_xmalloc,
+    .calloc = ruby_xcalloc,
+    .realloc = ruby_xrealloc,
+    .free = ruby_xfree,
+    .alloc_n = ruby_xmalloc2,
+    .alloc = ruby_xmalloc,
+    .realloc_n = ruby_xrealloc2,
+    .zalloc = zalloc,
+    .rb_memmove = memmove2,
+    .nonempty_memcpy = nonempty_memcpy,
+    .xmalloc_mul_add = rb_xmalloc_mul_add,
+
+    .compile_callback = rb_suppress_tracing,
+    .reg_named_capture_assign = reg_named_capture_assign,
+
+    .attr_get = rb_attr_get,
+
+    .ary_new_from_args = rb_ary_new_from_args,
+    .ary_unshift = rb_ary_unshift,
+
+    .make_temporary_id = rb_make_temporary_id,
+    .is_local_id = is_local_id2,
+    .is_attrset_id = is_attrset_id2,
+    .is_global_name_punct = is_global_name_punct,
+    .id_type = id_type,
+    .id_attrset = rb_id_attrset,
+    .intern = rb_intern,
+    .intern2 = rb_intern2,
+    .intern3 = intern3,
+    .intern_str = rb_intern_str,
+    .is_notop_id = is_notop_id2,
+    .enc_symname_type = enc_symname_type,
+    .id2name = rb_id2name,
+    .id2str = rb_id2str,
+    .id2sym = rb_id2sym,
+
+    .str_catf = rb_str_catf,
+    .str_cat_cstr = rb_str_cat_cstr,
+    .str_resize = rb_str_resize,
+    .str_new = rb_str_new,
+    .str_new_cstr = rb_str_new_cstr,
+    .str_to_interned_str = rb_str_to_interned_str,
+    .enc_str_new = enc_str_new,
+    .str_vcatf = rb_str_vcatf,
+    .rb_sprintf = rb_sprintf,
+    .rstring_ptr = RSTRING_PTR,
+    .rstring_len = RSTRING_LEN,
+
+    .int2num = rb_int2num_inline,
+
+    .stderr_tty_p = rb_stderr_tty_p,
+    .write_error_str = rb_write_error_str,
+    .io_write = rb_io_write,
+    .io_flush = rb_io_flush,
+    .io_puts = rb_io_puts,
+
+    .debug_output_stdout = rb_ractor_stdout,
+    .debug_output_stderr = rb_ractor_stderr,
+
+    .is_usascii_enc = is_usascii_enc,
+    .enc_isalnum = enc_isalnum,
+    .enc_precise_mbclen = enc_precise_mbclen,
+    .mbclen_charfound_p = mbclen_charfound_p,
+    .mbclen_charfound_len = mbclen_charfound_len,
+    .enc_name = enc_name,
+    .enc_prev_char = enc_prev_char,
+    .enc_get = enc_get,
+    .enc_asciicompat = enc_asciicompat,
+    .utf8_encoding = utf8_encoding,
+    .ascii8bit_encoding = ascii8bit_encoding,
+    .enc_codelen = enc_codelen,
+    .enc_mbcput = enc_mbcput,
+    .enc_find_index = rb_enc_find_index,
+    .enc_from_index = enc_from_index,
+    .enc_isspace = enc_isspace,
+    .enc_coderange_7bit = ENC_CODERANGE_7BIT,
+    .enc_coderange_unknown = ENC_CODERANGE_UNKNOWN,
+    .enc_mbminlen = enc_mbminlen,
+    .enc_isascii = enc_isascii,
+    .enc_mbc_to_codepoint = enc_mbc_to_codepoint,
+
+    .local_defined = local_defined,
+    .dvar_defined = dvar_defined,
+
+    .syntax_error_append = syntax_error_append,
+    .raise = rb_raise,
+    .syntax_error_new = syntax_error_new,
+
+    .errinfo = rb_errinfo,
+    .set_errinfo = rb_set_errinfo,
+    .make_exception = rb_make_exception,
+
+    .sized_xfree = ruby_xfree_sized,
+    .sized_realloc_n = ruby_sized_realloc_n,
+    .gc_guard = gc_guard,
+    .gc_mark = rb_gc_mark,
+
+    .reg_compile = rb_reg_compile,
+    .reg_check_preprocess = rb_reg_check_preprocess,
+    .memcicmp = rb_memcicmp,
+
+    .compile_warn = rb_compile_warn,
+    .compile_warning = rb_compile_warning,
+    .bug = rb_bug,
+    .fatal = rb_fatal,
+    .verbose = ruby_verbose2,
+    .errno_ptr = rb_errno_ptr2,
+
+    .make_backtrace = rb_make_backtrace,
+
+    .scan_hex = ruby_scan_hex,
+    .scan_oct = ruby_scan_oct,
+    .scan_digits = ruby_scan_digits,
+    .strtod = ruby_strtod,
+
+    .rtest = rtest,
+    .nil_p = nil_p,
+    .qnil = Qnil,
+    .qfalse = Qfalse,
+    .eArgError = arg_error,
+    .long2int = rb_long2int,
+
+    /* For Ripper */
+    .static_id2sym = static_id2sym,
+    .str_coderange_scan_restartable = str_coderange_scan_restartable,
+};
+#endif
+
+enum lex_type {
+    lex_type_str,
+    lex_type_io,
+    lex_type_array,
+    lex_type_generic,
+};
+
+struct ruby_parser {
+    rb_parser_t *parser_params;
+    enum lex_type type;
+    union {
+        struct lex_pointer_string lex_str;
+        struct {
+            VALUE file;
+        } lex_io;
+        struct {
+            VALUE ary;
+        } lex_array;
+    } data;
+};
+
+static void
+parser_mark(void *ptr)
+{
+    struct ruby_parser *parser = (struct ruby_parser*)ptr;
+    rb_ruby_parser_mark(parser->parser_params);
+
+    switch (parser->type) {
+      case lex_type_str:
+        rb_gc_mark(parser->data.lex_str.str);
+        break;
+      case lex_type_io:
+        rb_gc_mark(parser->data.lex_io.file);
+        break;
+      case lex_type_array:
+        rb_gc_mark(parser->data.lex_array.ary);
+        break;
+      case lex_type_generic:
+        /* noop. Caller of rb_parser_compile_generic should mark the objects. */
+        break;
+    }
+}
+
+static void
+parser_free(void *ptr)
+{
+    struct ruby_parser *parser = (struct ruby_parser*)ptr;
+    rb_ruby_parser_free(parser->parser_params);
+    xfree(parser);
+}
+
+static size_t
+parser_memsize(const void *ptr)
+{
+    struct ruby_parser *parser = (struct ruby_parser*)ptr;
+    return rb_ruby_parser_memsize(parser->parser_params);
+}
+
+static const rb_data_type_t ruby_parser_data_type = {
+    "parser",
+    {
+        parser_mark,
+        parser_free,
+        parser_memsize,
+    },
+    0, 0, RUBY_TYPED_FREE_IMMEDIATELY
+};
+
+#ifdef UNIVERSAL_PARSER
+const rb_parser_config_t *
+rb_ruby_parser_config(void)
+{
+    return &rb_global_parser_config;
+}
+
+rb_parser_t *
+rb_parser_params_new(void)
+{
+    return rb_ruby_parser_new(&rb_global_parser_config);
+}
+#else
+rb_parser_t *
+rb_parser_params_new(void)
+{
+    return rb_ruby_parser_new();
+}
+#endif /* UNIVERSAL_PARSER */
+
+VALUE
+rb_parser_new(void)
+{
+    struct ruby_parser *parser;
+    rb_parser_t *parser_params;
+
+    /*
+     * Create parser_params ahead of vparser because
+     * rb_ruby_parser_new can run GC so if create vparser
+     * first, parser_mark tries to mark not initialized parser_params.
+     */
+    parser_params = rb_parser_params_new();
+    VALUE vparser = TypedData_Make_Struct(0, struct ruby_parser,
+                                         &ruby_parser_data_type, parser);
+    parser->parser_params = parser_params;
+
+    return vparser;
+}
+
+void
+rb_parser_set_options(VALUE vparser, int print, int loop, int chomp, int split)
+{
+    struct ruby_parser *parser;
+
+    TypedData_Get_Struct(vparser, struct ruby_parser, &ruby_parser_data_type, parser);
+    rb_ruby_parser_set_options(parser->parser_params, print, loop, chomp, split);
+}
+
+VALUE
+rb_parser_set_context(VALUE vparser, const struct rb_iseq_struct *base, int main)
+{
+    struct ruby_parser *parser;
+
+    TypedData_Get_Struct(vparser, struct ruby_parser, &ruby_parser_data_type, parser);
+    rb_ruby_parser_set_context(parser->parser_params, base, main);
+    return vparser;
+}
+
+void
+rb_parser_set_script_lines(VALUE vparser)
+{
+    struct ruby_parser *parser;
+
+    TypedData_Get_Struct(vparser, struct ruby_parser, &ruby_parser_data_type, parser);
+    rb_ruby_parser_set_script_lines(parser->parser_params);
+}
+
+void
+rb_parser_error_tolerant(VALUE vparser)
+{
+    struct ruby_parser *parser;
+
+    TypedData_Get_Struct(vparser, struct ruby_parser, &ruby_parser_data_type, parser);
+    rb_ruby_parser_error_tolerant(parser->parser_params);
+}
+
+void
+rb_parser_keep_tokens(VALUE vparser)
+{
+    struct ruby_parser *parser;
+
+    TypedData_Get_Struct(vparser, struct ruby_parser, &ruby_parser_data_type, parser);
+    rb_ruby_parser_keep_tokens(parser->parser_params);
+}
+
+rb_parser_string_t *
+rb_parser_lex_get_str(struct parser_params *p, struct lex_pointer_string *ptr_str)
+{
+    char *beg, *end, *start;
+    long len;
+    VALUE s = ptr_str->str;
+
+    beg = RSTRING_PTR(s);
+    len = RSTRING_LEN(s);
+    start = beg;
+    if (ptr_str->ptr) {
+        if (len == ptr_str->ptr) return 0;
+        beg += ptr_str->ptr;
+        len -= ptr_str->ptr;
+    }
+    end = memchr(beg, '\n', len);
+    if (end) len = ++end - beg;
+    ptr_str->ptr += len;
+    return rb_str_to_parser_string(p, rb_str_subseq(s, beg - start, len));
+}
+
+static rb_parser_string_t *
+lex_get_str(struct parser_params *p, rb_parser_input_data input, int line_count)
+{
+    return rb_parser_lex_get_str(p, (struct lex_pointer_string *)input);
+}
+
+static void parser_aset_script_lines_for(VALUE path, rb_parser_ary_t *lines);
+
+static rb_ast_t*
+parser_compile(rb_parser_t *p, rb_parser_lex_gets_func *gets, VALUE fname, rb_parser_input_data input, int line)
+{
+    rb_ast_t *ast = rb_parser_compile(p, gets, fname, input, line);
+    parser_aset_script_lines_for(fname, ast->body.script_lines);
+    return ast;
+}
+
+static rb_ast_t*
+parser_compile_string0(struct ruby_parser *parser, VALUE fname, VALUE s, int line)
+{
+    VALUE str = rb_str_new_frozen(s);
+
+    parser->type = lex_type_str;
+    parser->data.lex_str.str = str;
+    parser->data.lex_str.ptr = 0;
+
+    return parser_compile(parser->parser_params, lex_get_str, fname, (rb_parser_input_data)&parser->data, line);
+}
+
+static rb_encoding *
+must_be_ascii_compatible(VALUE s)
+{
+    rb_encoding *enc = rb_enc_get(s);
+    if (!rb_enc_asciicompat(enc)) {
+        rb_raise(rb_eArgError, "invalid source encoding");
+    }
+    return enc;
+}
+
+static rb_ast_t*
+parser_compile_string_path(struct ruby_parser *parser, VALUE f, VALUE s, int line)
+{
+    must_be_ascii_compatible(s);
+    return parser_compile_string0(parser, f, s, line);
+}
+
+static rb_ast_t*
+parser_compile_string(struct ruby_parser *parser, const char *f, VALUE s, int line)
+{
+    return parser_compile_string_path(parser, rb_filesystem_str_new_cstr(f), s, line);
+}
+
+VALUE rb_io_gets_internal(VALUE io);
+
+static rb_parser_string_t *
+lex_io_gets(struct parser_params *p, rb_parser_input_data input, int line_count)
+{
+    VALUE io = (VALUE)input;
+    VALUE line = rb_io_gets_internal(io);
+    if (NIL_P(line)) return 0;
+    return rb_str_to_parser_string(p, line);
+}
+
+static rb_parser_string_t *
+lex_gets_array(struct parser_params *p, rb_parser_input_data data, int index)
+{
+    VALUE array = (VALUE)data;
+    VALUE str = rb_ary_entry(array, index);
+    if (!NIL_P(str)) {
+        StringValue(str);
+        if (!rb_enc_asciicompat(rb_enc_get(str))) {
+            rb_raise(rb_eArgError, "invalid source encoding");
+        }
+        return rb_str_to_parser_string(p, str);
+    }
+    else {
+        return 0;
+    }
+}
+
+static rb_ast_t*
+parser_compile_file_path(struct ruby_parser *parser, VALUE fname, VALUE file, int start)
+{
+    parser->type = lex_type_io;
+    parser->data.lex_io.file = file;
+
+    return parser_compile(parser->parser_params, lex_io_gets, fname, (rb_parser_input_data)file, start);
+}
+
+static rb_ast_t*
+parser_compile_array(struct ruby_parser *parser, VALUE fname, VALUE array, int start)
+{
+    parser->type = lex_type_array;
+    parser->data.lex_array.ary = array;
+
+    return parser_compile(parser->parser_params, lex_gets_array, fname, (rb_parser_input_data)array, start);
+}
+
+static rb_ast_t*
+parser_compile_generic(struct ruby_parser *parser, rb_parser_lex_gets_func *lex_gets, VALUE fname, VALUE input, int start)
+{
+    parser->type = lex_type_generic;
+
+    return parser_compile(parser->parser_params, lex_gets, fname, (rb_parser_input_data)input, start);
+}
+
+static void
+ast_free(void *ptr)
+{
+    rb_ast_t *ast = (rb_ast_t *)ptr;
+    rb_ast_free(ast);
+}
+
+static const rb_data_type_t ast_data_type = {
+    "AST",
+    {
+        NULL,
+        ast_free,
+        NULL, // No dsize() because this object does not appear in ObjectSpace.
+    },
+    0, 0, RUBY_TYPED_FREE_IMMEDIATELY
+};
+
+static VALUE
+ast_alloc(void)
+{
+    return TypedData_Wrap_Struct(0, &ast_data_type, NULL);
+}
+
+VALUE
+rb_parser_compile_file_path(VALUE vparser, VALUE fname, VALUE file, int start)
+{
+    struct ruby_parser *parser;
+    VALUE ast_value = ast_alloc();
+
+    TypedData_Get_Struct(vparser, struct ruby_parser, &ruby_parser_data_type, parser);
+    DATA_PTR(ast_value) = parser_compile_file_path(parser, fname, file, start);
+    RB_GC_GUARD(vparser);
+
+    return ast_value;
+}
+
+VALUE
+rb_parser_compile_array(VALUE vparser, VALUE fname, VALUE array, int start)
+{
+    struct ruby_parser *parser;
+    VALUE ast_value = ast_alloc();
+
+    TypedData_Get_Struct(vparser, struct ruby_parser, &ruby_parser_data_type, parser);
+    DATA_PTR(ast_value) = parser_compile_array(parser, fname, array, start);
+    RB_GC_GUARD(vparser);
+
+    return ast_value;
+}
+
+VALUE
+rb_parser_compile_generic(VALUE vparser, rb_parser_lex_gets_func *lex_gets, VALUE fname, VALUE input, int start)
+{
+    struct ruby_parser *parser;
+    VALUE ast_value = ast_alloc();
+
+    TypedData_Get_Struct(vparser, struct ruby_parser, &ruby_parser_data_type, parser);
+    DATA_PTR(ast_value) = parser_compile_generic(parser, lex_gets, fname, input, start);
+    RB_GC_GUARD(vparser);
+
+    return ast_value;
+}
+
+VALUE
+rb_parser_compile_string(VALUE vparser, const char *f, VALUE s, int line)
+{
+    struct ruby_parser *parser;
+    VALUE ast_value = ast_alloc();
+
+    TypedData_Get_Struct(vparser, struct ruby_parser, &ruby_parser_data_type, parser);
+    DATA_PTR(ast_value) = parser_compile_string(parser, f, s, line);
+    RB_GC_GUARD(vparser);
+
+    return ast_value;
+}
+
+VALUE
+rb_parser_compile_string_path(VALUE vparser, VALUE f, VALUE s, int line)
+{
+    struct ruby_parser *parser;
+    VALUE ast_value = ast_alloc();
+
+    TypedData_Get_Struct(vparser, struct ruby_parser, &ruby_parser_data_type, parser);
+    DATA_PTR(ast_value) = parser_compile_string_path(parser, f, s, line);
+    RB_GC_GUARD(vparser);
+
+    return ast_value;
+}
+
+VALUE
+rb_parser_encoding(VALUE vparser)
+{
+    struct ruby_parser *parser;
+
+    TypedData_Get_Struct(vparser, struct ruby_parser, &ruby_parser_data_type, parser);
+    return rb_enc_from_encoding(rb_ruby_parser_encoding(parser->parser_params));
+}
+
+VALUE
+rb_parser_end_seen_p(VALUE vparser)
+{
+    struct ruby_parser *parser;
+
+    TypedData_Get_Struct(vparser, struct ruby_parser, &ruby_parser_data_type, parser);
+    return RBOOL(rb_ruby_parser_end_seen_p(parser->parser_params));
+}
+
+VALUE
+rb_parser_set_yydebug(VALUE vparser, VALUE flag)
+{
+    struct ruby_parser *parser;
+
+    TypedData_Get_Struct(vparser, struct ruby_parser, &ruby_parser_data_type, parser);
+    rb_ruby_parser_set_yydebug(parser->parser_params, RTEST(flag));
+    return flag;
+}
+
+void
+rb_set_script_lines_for(VALUE vparser, VALUE path)
+{
+    struct ruby_parser *parser;
+    VALUE hash;
+    ID script_lines;
+    CONST_ID(script_lines, "SCRIPT_LINES__");
+    if (!rb_const_defined_at(rb_cObject, script_lines)) return;
+    hash = rb_const_get_at(rb_cObject, script_lines);
+    if (RB_TYPE_P(hash, T_HASH)) {
+        rb_hash_aset(hash, path, Qtrue);
+        TypedData_Get_Struct(vparser, struct ruby_parser, &ruby_parser_data_type, parser);
+        rb_ruby_parser_set_script_lines(parser->parser_params);
+    }
+}
+
+VALUE
+rb_parser_build_script_lines_from(rb_parser_ary_t *lines)
+{
+    int i;
+    if (!lines) return Qnil;
+    if (lines->data_type != PARSER_ARY_DATA_SCRIPT_LINE) {
+        rb_bug("unexpected rb_parser_ary_data_type (%d) for script lines", lines->data_type);
+    }
+    VALUE script_lines = rb_ary_new_capa(lines->len);
+    for (i = 0; i < lines->len; i++) {
+        rb_parser_string_t *str = (rb_parser_string_t *)lines->data[i];
+        rb_ary_push(script_lines, rb_enc_str_new(str->ptr, str->len, str->enc));
+    }
+    return script_lines;
+}
+
+VALUE
+rb_str_new_parser_string(rb_parser_string_t *str)
+{
+    VALUE string = rb_enc_literal_str(str->ptr, str->len, str->enc);
+    rb_enc_str_coderange(string);
+    return string;
+}
+
+VALUE
+rb_str_new_mutable_parser_string(rb_parser_string_t *str)
+{
+    return rb_enc_str_new(str->ptr, str->len, str->enc);
+}
+
+static VALUE
+negative_numeric(VALUE val)
+{
+    if (FIXNUM_P(val)) {
+        return LONG2FIX(-FIX2LONG(val));
+    }
+    if (SPECIAL_CONST_P(val)) {
+#if USE_FLONUM
+        if (FLONUM_P(val)) {
+            return DBL2NUM(-RFLOAT_VALUE(val));
+        }
+#endif
+        goto unknown;
+    }
+    switch (BUILTIN_TYPE(val)) {
+      case T_BIGNUM:
+        BIGNUM_NEGATE(val);
+        val = rb_big_norm(val);
+        break;
+      case T_RATIONAL:
+        RATIONAL_SET_NUM(val, negative_numeric(RRATIONAL(val)->num));
+        break;
+      case T_COMPLEX:
+        RCOMPLEX_SET_REAL(val, negative_numeric(RCOMPLEX(val)->real));
+        RCOMPLEX_SET_IMAG(val, negative_numeric(RCOMPLEX(val)->imag));
+        break;
+      case T_FLOAT:
+        val = DBL2NUM(-RFLOAT_VALUE(val));
+        break;
+      unknown:
+      default:
+        rb_bug("unknown literal type (%s) passed to negative_numeric",
+               rb_builtin_class_name(val));
+        break;
+    }
+    return val;
+}
+
+static VALUE
+integer_value(const char *val, int base)
+{
+    return rb_cstr_to_inum(val, base, FALSE);
+}
+
+static VALUE
+rational_value(const char *node_val, int base, int seen_point)
+{
+    VALUE lit;
+    char* val = strdup(node_val);
+    if (seen_point > 0) {
+        int len = (int)(strlen(val));
+        char *point = &val[seen_point];
+        size_t fraclen = len-seen_point-1;
+        memmove(point, point+1, fraclen+1);
+
+        lit = rb_rational_new(integer_value(val, base), rb_int_positive_pow(10, fraclen));
+    }
+    else {
+        lit = rb_rational_raw1(integer_value(val, base));
+    }
+
+    free(val);
+
+    return lit;
+}
+
+VALUE
+rb_node_integer_literal_val(const NODE *n)
+{
+    const rb_node_integer_t *node = RNODE_INTEGER(n);
+    VALUE val = integer_value(node->val, node->base);
+    if (node->minus) {
+        val = negative_numeric(val);
+    }
+    return val;
+}
+
+VALUE
+rb_node_float_literal_val(const NODE *n)
+{
+    const rb_node_float_t *node = RNODE_FLOAT(n);
+    double d = strtod(node->val, 0);
+    if (node->minus) {
+        d = -d;
+    }
+    VALUE val = DBL2NUM(d);
+    return val;
+}
+
+VALUE
+rb_node_rational_literal_val(const NODE *n)
+{
+    VALUE lit;
+    const rb_node_rational_t *node = RNODE_RATIONAL(n);
+
+    lit = rational_value(node->val, node->base, node->seen_point);
+
+    if (node->minus) {
+        lit = negative_numeric(lit);
+    }
+
+    return lit;
+}
+
+VALUE
+rb_node_imaginary_literal_val(const NODE *n)
+{
+    VALUE lit;
+    const rb_node_imaginary_t *node = RNODE_IMAGINARY(n);
+
+    enum rb_numeric_type type = node->type;
+
+    switch (type) {
+      case integer_literal:
+        lit = integer_value(node->val, node->base);
+        break;
+      case float_literal:{
+        double d = strtod(node->val, 0);
+        lit = DBL2NUM(d);
+        break;
+      }
+      case rational_literal:
+        lit = rational_value(node->val, node->base, node->seen_point);
+        break;
+      default:
+        rb_bug("unreachable");
+    }
+
+    lit = rb_complex_raw(INT2FIX(0), lit);
+
+    if (node->minus) {
+        lit = negative_numeric(lit);
+    }
+    return lit;
+}
+
+VALUE
+rb_node_str_string_val(const NODE *node)
+{
+    rb_parser_string_t *str = RNODE_STR(node)->string;
+    return rb_str_new_parser_string(str);
+}
+
+VALUE
+rb_node_sym_string_val(const NODE *node)
+{
+    rb_parser_string_t *str = RNODE_SYM(node)->string;
+    return ID2SYM(rb_intern3(str->ptr, str->len, str->enc));
+}
+
+VALUE
+rb_node_dstr_string_val(const NODE *node)
+{
+    rb_parser_string_t *str = RNODE_DSTR(node)->string;
+    return str ? rb_str_new_parser_string(str) : Qnil;
+}
+
+VALUE
+rb_node_dregx_string_val(const NODE *node)
+{
+    rb_parser_string_t *str = RNODE_DREGX(node)->string;
+    return rb_str_new_parser_string(str);
+}
+
+VALUE
+rb_node_regx_string_val(const NODE *node)
+{
+    rb_node_regx_t *node_reg = RNODE_REGX(node);
+    rb_parser_string_t *string = node_reg->string;
+    VALUE str = rb_enc_str_new(string->ptr, string->len, string->enc);
+
+    return rb_reg_compile(str, node_reg->options, NULL, 0);
+}
+
+VALUE
+rb_node_line_lineno_val(const NODE *node)
+{
+    return INT2FIX(node->nd_loc.beg_pos.lineno);
+}
+
+VALUE
+rb_node_file_path_val(const NODE *node)
+{
+    return rb_str_new_parser_string(RNODE_FILE(node)->path);
+}
+
+VALUE
+rb_node_encoding_val(const NODE *node)
+{
+    return rb_enc_from_encoding(RNODE_ENCODING(node)->enc);
+}
+
+static void
+parser_aset_script_lines_for(VALUE path, rb_parser_ary_t *lines)
+{
+    VALUE hash, script_lines;
+    ID script_lines_id;
+    if (NIL_P(path) || !lines) return;
+    CONST_ID(script_lines_id, "SCRIPT_LINES__");
+    if (!rb_const_defined_at(rb_cObject, script_lines_id)) return;
+    hash = rb_const_get_at(rb_cObject, script_lines_id);
+    if (!RB_TYPE_P(hash, T_HASH)) return;
+    if (rb_hash_lookup(hash, path) == Qnil) return;
+    script_lines = rb_parser_build_script_lines_from(lines);
+    rb_hash_aset(hash, path, script_lines);
+}
+
+VALUE
+rb_ruby_ast_new(const NODE *const root)
+{
+    rb_ast_t *ast;
+    VALUE ast_value = TypedData_Make_Struct(0, rb_ast_t, &ast_data_type, ast);
+#ifdef UNIVERSAL_PARSER
+    ast->config = &rb_global_parser_config;
+#endif
+    ast->body = (rb_ast_body_t){
+        .root = root,
+        .frozen_string_literal = -1,
+        .coverage_enabled = -1,
+        .script_lines = NULL,
+        .line_count = 0,
+    };
+    return ast_value;
+}
+
+rb_ast_t *
+rb_ruby_ast_data_get(VALUE ast_value)
+{
+    rb_ast_t *ast;
+    if (NIL_P(ast_value)) return NULL;
+    TypedData_Get_Struct(ast_value, rb_ast_t, &ast_data_type, ast);
+    return ast;
+}