uri
Parses uri
and constructs either matching URI
scheme object (File
, FTP
, HTTP
, HTTPS
, LDAP
, LDAPS
, or MailTo
) or URI::Generic
.
p = URI::Parser.new p.parse("ldap://ldap.example.com/dc=example?user=john") #=> #<URI::LDAP ldap://ldap.example.com/dc=example?user=john>
uri
Parses uri
and constructs either matching URI
scheme object (File
, FTP
, HTTP
, HTTPS
, LDAP
, LDAPS
, or MailTo
) or URI::Generic
.
p = URI::Parser.new p.parse("ldap://ldap.example.com/dc=example?user=john") #=> #<URI::LDAP ldap://ldap.example.com/dc=example?user=john>
Parses the given string into an abstract syntax tree, returning the root node of that tree.
RubyVM::AbstractSyntaxTree.parse("x = 1 + 2") # => #<RubyVM::AbstractSyntaxTree::Node:SCOPE@1:0-1:9>
If keep_script_lines: true
option is provided, the text of the parsed source is associated with nodes and is available via Node#script_lines
.
If keep_tokens: true
option is provided, Node#tokens
are populated.
SyntaxError
is raised if the given string is invalid syntax. To overwrite this behavior, error_tolerant: true
can be provided. In this case, the parser will produce a tree where expressions with syntax errors would be represented by Node
with type=:ERROR
.
root = RubyVM::AbstractSyntaxTree.parse("x = 1; p(x; y=2") # <internal:ast>:33:in `parse': syntax error, unexpected ';', expecting ')' (SyntaxError) # x = 1; p(x; y=2 # ^ root = RubyVM::AbstractSyntaxTree.parse("x = 1; p(x; y=2", error_tolerant: true) # (SCOPE@1:0-1:15 # tbl: [:x, :y] # args: nil # body: (BLOCK@1:0-1:15 (LASGN@1:0-1:5 :x (LIT@1:4-1:5 1)) (ERROR@1:7-1:11) (LASGN@1:12-1:15 :y (LIT@1:14-1:15 2)))) root.children.last.children # [(LASGN@1:0-1:5 :x (LIT@1:4-1:5 1)), # (ERROR@1:7-1:11), # (LASGN@1:12-1:15 :y (LIT@1:14-1:15 2))]
Note that parsing continues even after the errored expresion.
Generate a Table Caption element as a string.
align
can be a string, giving the alignment of the caption (one of top, bottom, left, or right). It can be a hash of all the attributes of the element. Or it can be omitted.
The body of the element is provided by the passed-in no-argument block.
caption("left") { "Capital Cities" } # => <CAPTION ALIGN=\"left\">Capital Cities</CAPTION>
Parses the configuration data read from io and returns the whole content as a Hash
.
Parse and return a Time
from string
Sets the preset dictionary and returns string
. This method is available just only after Zlib::Deflate.new
or Zlib::ZStream#reset
method was called. See zlib.h for details.
Can raise errors of Z_STREAM_ERROR if a parameter is invalid (such as NULL dictionary) or the stream state is inconsistent, Z_DATA_ERROR if the given dictionary doesn’t match the expected one (incorrect adler32 value)
Sets the preset dictionary and returns string
. This method is available just only after a Zlib::NeedDict
exception was raised. See zlib.h for details.
Returns a hash of default options used by the Ruby iseq compiler.
For details, see InstructionSequence.compile_option=
.
Sets the default values for various optimizations in the Ruby iseq compiler.
Possible values for options
include true
, which enables all options, false
which disables all options, and nil
which leaves all options unchanged.
You can also pass a Hash
of options
that you want to change, any options not present in the hash will be left unchanged.
Possible option names (which are keys in options
) which can be set to true
or false
include:
:inline_const_cache
:instructions_unification
:operands_unification
:peephole_optimization
:specialized_instruction
:stack_caching
:tailcall_optimization
Additionally, :debug_level
can be set to an integer.
These default options can be overwritten for a single run of the iseq compiler by passing any of the above values as the options
parameter to ::new
, ::compile
and ::compile_file
.
Add a command-line option and handler to the command.
See Gem::OptionParser#make_switch for an explanation of opts
.
handler
will be called with two values, the value of the argument and the options hash.
If the first argument of add_option
is a Symbol
, it’s used to group options in output. See ‘gem help list` for an example.
Remove previously defined command-line argument name
.
Mark a command-line option as deprecated, and optionally specify a deprecation horizon.
Note that with the current implementation, every version of the option needs to be explicitly deprecated, so to deprecate an option defined as
add_option('-t', '--[no-]test', 'Set test mode') do |value, options| # ... stuff ... end
you would need to explicitly add a call to ‘deprecate_option` for every version of the option you want to deprecate, like
deprecate_option('-t') deprecate_option('--test') deprecate_option('--no-test')
Handle the given list of arguments by parsing them and recording the results.