This commit adds two buckets for allocating NODE structs, then allocates
"markable" NODE objects from one bucket. The reason to do this is so
when the AST mark function scans nodes for VALUE objects to mark, we
only scan NODE objects that we know to reference VALUE objects. If we
*did not* divide the objects, then the mark function spends too much
time scanning objects that don't contain any references.
Now we can reach the ID table buffer from the id table itself, so when
SCOPE nodes are marked we can keep the buffers alive. This eliminates
the need for the "mark array" during normal parse / compile (IOW *not*
Ripper).
This patch changes the AST mark function so that it will walk through
nodes in the NODE buffer marking Ruby objects rather than using a mark
array to guarantee liveness. The reason I want to do this is so that
when compaction happens on major GCs, node objects will have their
references pinned (or possibly we can update them correctly).
`rb_ast_t` holds a reference to this object, so it should mark the
object. Currently it is relying on the `mark_ary` on `node_buffer` to
ensure that the object stays alive. But since the array internals can
move, this could cause a segv if compaction impacts the array.
`(ID)1` was assigned to NODE_ARGS#rest_arg for `{|x,| }`.
This change removes the magic number by introducing an explicit macro
variable for it: NODE_SPECIAL_EXCESSED_COMMA.
NODE_HASH#nd_brace is a flag that is 1 for `foo({ k: 1 })` and 0 for
`foo(k: 1)`.
nd_alen had been abused for the flag (and the implementation is
completely the same), but an explicit name is better to read.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67266 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* node.c (rb_ast_dispose): since `ast->node_buffer` is freed in
`rb_ast_free()`, it should be always NULL.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65031 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
I want to add a new field to rb_ast_t whose size is restricted because
it is an imemo. This change makes one room in rb_ast_t.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64507 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This is NG. The ISO C section 6.7.2.1 explicitly states that
structs having flexible array members "shall not be a member
of a structure or an element of an array."
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61875 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
NODE_FOR was used both for "for"-statement itself and for
multi-assignment of for-statement (for x, y, in...end).
This change separates the two purposes, NODE_FOR for the former, and
newly introduced NODE_FOR_MASGN for the latter.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61871 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Because the name "code_range" is ambiguous with encoding's.
Abbreviations ("crange", and "cr") are also renamed to "loc".
The traditional "code_location" (a pair of lineno and column) is
renamed to "code_position". Abbreviations are also renamed
(first_loc to beg_pos, and last_loc to end_pos).
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61721 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
"loc" was ambiguous; it might refer both a location and a code range.
This change uses "loc" for a location, and "crange" or "cr" for a code
range.
A location (abbr. loc) is a point in a program and consists of line
number and column number. A code range (abbr. crange and cr) is a range
within a program and consists of a pair of locations which is the first
and the last.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61690 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
I think that recycling the delimiter string objects doesn't pay its
complexity.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61682 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
NODE_PRELUDE contains a `BEGIN` node, a main node, and compile_option.
This node is assumed that it must be located immediately under the root
NODE_SCOPE, but this strange assumption is not so good, IMO.
This change removes the assumtion; it integrates the former two nodes by
block_append, and moves compile_option into rb_ast_body_t.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61610 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
