Prints a formatted backtrace to the errors stream if backtraces are enabled.
Display a statement.
Returns an array of syntax error messages
If no missing pairs are found it falls back on the original error messages
Returns the parser to be used.
Unless a URI::Parser is defined, DEFAULT_PARSER is used.
Checks the fragment v component against the URI::Parser Regexp for :FRAGMENT.
v
Public setter for the fragment component v (with validation).
require 'uri' uri = URI.parse("http://my.example.com/?id=25#time=1305212049") uri.fragment = "time=1305212086" uri.to_s #=> "http://my.example.com/?id=25#time=1305212086"
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>
str
String to search
schemes
Patterns to apply to str
Attempts to parse and merge a set of URIs. If no block given, then returns the result, else it calls block for each element in result.
See also URI::Parser.make_regexp.
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>
str
String to search
schemes
Patterns to apply to str
Attempts to parse and merge a set of URIs. If no block given, then returns the result, else it calls block for each element in result.
See also URI::Parser.make_regexp.
Removes all objects from the queue.
Removes all objects from the queue.
Removes all map entries; returns self.
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 expression.
Like getc, but raises an exception if already at end-of-stream; see Character IO.
Similar to read, but raises EOFError at end of string instead of returning nil, as well as IO#sysread does.
Reads at most maxlen bytes from the stream. If buf is provided it must reference a string which will receive the data.
See IO#readpartial for full details.
Reads a one-character string from the stream. Raises an EOFError at end of file.
If a block is given, it prints out each of the elements encountered. Block parameters are (in that order):
depth: The recursion depth, plus one with each constructed value being encountered (Integer)
offset: Current byte offset (Integer)
header length: Combined length in bytes of the Tag and Length headers. (Integer)
length: The overall remaining length of the entire data (Integer)
constructed: Whether this value is constructed or not (Boolean)
tag_class: Current tag class (Symbol)
tag: The current tag number (Integer)
der = File.binread('asn1data.der') OpenSSL::ASN1.traverse(der) do | depth, offset, header_len, length, constructed, tag_class, tag| puts "Depth: #{depth} Offset: #{offset} Length: #{length}" puts "Header length: #{header_len} Tag: #{tag} Tag class: #{tag_class} Constructed: #{constructed}" end