405 lines
8.6 KiB
Crystal
405 lines
8.6 KiB
Crystal
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class Specs
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macro incompatible_methods(*names)
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{% for name in names %}
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{% if name.id == "as_s" %}
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def {{name}} : String
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raise "short string expected; which does not exist in #{self.class}"
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end
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{% elsif name.id == "as_a_or_s" %}
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def {{name}} : Array(String)
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raise "list or string expected; which does not exist in #{self.class}"
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end
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{% elsif name.id == "as_s_or_ls" %}
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def {{name}} : String
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raise "string or multiline text section expected; which does not exist in #{self.class}"
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end
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{% end %}
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{% end %}
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end
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class StringContainer
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property value : String
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def as_s : String
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@value
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end
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def as_a_or_s : Array(String)
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# FIXME: We should probably be splitting the string around comas.
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[@value]
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end
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def as_s_or_ls : String
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@value
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end
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def initialize(@value)
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end
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end
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class LongStringContainer
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Specs.incompatible_methods as_s, as_a_or_s
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property value : String
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def as_s_or_ls : String
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@value
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end
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def initialize(@value)
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end
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end
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class ArrayContainer
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Specs.incompatible_methods as_s, as_s_or_ls
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property value : Array(String)
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def as_a_or_s : Array(String)
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@value
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end
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def initialize(@value)
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end
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end
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class Section
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Specs.incompatible_methods as_s, as_a_or_s, as_s_or_ls
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property name : String
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property options : Array(String)
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property content : Hash(String, StringContainer | ArrayContainer | LongStringContainer)
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def initialize(@name)
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@options = Array(String).new
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@content = Hash(String, StringContainer | ArrayContainer | LongStringContainer).new
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end
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end
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property assignments : Hash(String, StringContainer | LongStringContainer | Array(Section) | ArrayContainer)
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def initialize
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@assignments = Hash(String, StringContainer | LongStringContainer | Array(Section) | ArrayContainer).new
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@assignments["sections"] = Array(Section).new
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end
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def parse_assignment (line : String)
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# puts "simple assignment: #{line}"
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name = /([a-zA-Z][a-zA-Z0-9]*):/.match(line).try &.[1]
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value = /[a-zA-Z][a-zA-Z0-9]*: ([^#]*)/.match(line).try &.[1]
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if name.nil?
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return
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end
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if value.nil?
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return
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end
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@assignments[name] = StringContainer.new value.lstrip(" ").rstrip(" ")
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end
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def parse_list(header : String, content : Array(String))
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name = /[a-zA-Z][a-zA-Z0-9]*/.match(header).try &.[0]
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# puts "new list: #{name}"
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list = Array(String).new
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while line = content.shift?
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case line
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when /^[ \t]*(#.*)?$/
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# puts "blank line or comment, still in a list"
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when /^[ \t]+-([^#]*)/
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# puts "line content: #{$~[1]}"
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list.push $~[1].lstrip(" ").rstrip(" ")
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else
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content.unshift line
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break
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end
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end
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if name.nil?
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return
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end
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if list.nil?
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return
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end
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@assignments[name] = ArrayContainer.new list
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end
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def parse_code_block(header : String, content : Array(String))
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name = /[a-zA-Z][a-zA-Z0-9]*/.match(header).try &.[0]
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# puts "new code block: #{name}"
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value = String.build do |str|
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while line = content.shift?
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case line
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when /^[ \t]*(#.*)?$/
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# puts "blank line or comment, still in a code block"
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when /^[ \t]+(.*)/
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# puts "code content: #{$~[1]}"
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str << "#{$~[1].lstrip(" ").rstrip(" ")};"
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else
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content.unshift line
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break
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end
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end
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end
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if name.nil?
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return
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end
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if value.nil?
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return
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end
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@assignments[name] = LongStringContainer.new value
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end
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def parse_section(header : String, content : Array(String))
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results = /^[%]([a-zA-Z][a-zA-Z0-9]*)[ \t]*([^#]*)/.match(header)
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name = results[1]? if results
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options = results[2]? if results
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if name.nil?
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return
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end
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section = Section.new name
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unless options.nil?
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section.options = options.split(",").map &.lstrip(" ").rstrip(" ")
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end
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while line = content.shift?
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case line
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when /^[ \t]*#.*$/
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# puts "blank line or comment, still in a section"
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when /^([ \t]+)([^:]+):[ \t]+(.+)/
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aname = $~[2].lstrip(" ").rstrip(" ")
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avalue = $~[3].lstrip(" ").rstrip(" ")
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# puts "simple assignation: #{aname} => #{avalue}"
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section.content[aname] = StringContainer.new avalue
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when /^([ \t]+)[@]([^ \t#]+)/ # free text
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indent = $~[1]
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codeblockname = $~[2].lstrip(" ").rstrip(" ")
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# puts "code block name: #{codeblockname}"
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codeblockvalue = String.build do |str|
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while line = content.shift?
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case line
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when /^[ \t]*#.*?$/
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# puts "blank line or comment, still in a free text in a section"
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when /#{indent}[ \t]+(.*)/
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v = $~[1].lstrip(" ").rstrip(" ")
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# puts "freetext content in section: #{v}"
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# puts "code content: #{$~[1]}"
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str << "#{v};"
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else
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content.unshift line
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break
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end
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end
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end
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section.content[codeblockname] = LongStringContainer.new codeblockvalue
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when /^([ \t]+)([^:]+):/
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indent = $~[1]
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lname = $~[2].lstrip(" ").rstrip(" ")
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# puts "list: #{lname}"
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list = Array(String).new
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while line = content.shift?
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case line
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when /^[ \t]*#.*?$/
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# puts "blank line or comment, still in a list in a section"
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when /^#{indent}[ \t]+-([^#]*)/
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lcontent = $~[1].lstrip(" ").rstrip(" ")
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# puts "list item in section: #{lcontent}"
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list.push lcontent
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else
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content.unshift line
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break
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end
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end
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if list.empty?
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next
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end
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section.content[lname] = ArrayContainer.new list
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else
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content.unshift line
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break
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end
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end
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sections = @assignments["sections"]
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if sections.is_a?(Array(Section))
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sections.push section
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end
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end
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def parse_lines(content : Array(String))
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count = 0
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while line = content.shift?
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case line
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when /^[ \t]*$/
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else
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# puts "line #{count}: #{line}"
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end
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case line
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when /^[a-zA-Z][a-zA-Z0-9]*:[ \t]*([#].*)?$/
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parse_list line, content
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when /^[a-zA-Z][a-zA-Z]*:[ \t]+[^#]+/
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parse_assignment line
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when /^[@][a-zA-Z][a-zA-Z]*[ \t]*([#].*)?/
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parse_code_block line, content
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when /^[%][a-zA-Z][a-zA-Z]*[ \t]*([#].*)?/
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parse_section line, content
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when /^[ \t]*#/
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# puts "comment"
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when /^[ \t]+/
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puts "tab!! should not happen"
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end
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count += 1
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end
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end
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def replace_string (str : String)
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reg = /%\{([^}]*)\}/
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while str =~ reg
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x = reg.match(str)
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unless x.nil?
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var = x.captures()
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if var[0]? && @assignments[var[0]]?
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replacement_object = @assignments[var[0]]
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case replacement_object
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when StringContainer
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replacement_value = replacement_object.value
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str = str.gsub "%{#{var[0]}}", "#{replacement_value}"
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end
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else
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# TODO: search in sections for assignments?
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raise "cannot find variable \033[31m#{var[0]}\033[00m"
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end
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end
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end
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str
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end
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def replace_string_obj (v : StringContainer | LongStringContainer)
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is_missing_references = false
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value = v.value
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begin
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v.value = replace_string value
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rescue e
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puts "#{e}"
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is_missing_references = true
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end
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if is_missing_references
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raise "there are missing references in the document: fix it"
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end
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end
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def replace_array (a : Array(String))
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newarray = Array(String).new
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is_missing_references = false
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a.each do |value|
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begin
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newarray.push replace_string(value)
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rescue e
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puts "#{e}"
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is_missing_references = true
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end
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end
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if is_missing_references
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raise "there are missing references in the document: fix it"
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end
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newarray
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end
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def replace_array_obj (v : ArrayContainer)
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str_array = v.value
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newarray = replace_array str_array
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v.value = newarray
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end
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def replace_section_obj (v : Section)
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is_missing_references = false
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v.options = replace_array v.options
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v.content.map do |k, v|
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case v
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when StringContainer
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replace_string_obj v
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when LongStringContainer
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replace_string_obj v
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when ArrayContainer
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replace_array_obj v
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end
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end
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end
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def rewrite
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# replaces all occurrences of %{variable} by the content of @assignments[variable]
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@assignments.map do |k, v|
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case v
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when StringContainer
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replace_string_obj v
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when LongStringContainer
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replace_string_obj v
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when ArrayContainer
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replace_array_obj v
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when Array(Section)
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v.each do |section|
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replace_section_obj section
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end
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end
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end
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end
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# The only function to use from outside.
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def self.parse(file_name : String, options : Hash(String, String) | Nil = nil) : Specs | Nil
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begin
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content = File.read(file_name)
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content = content.rchop
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specs = Specs.new
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unless options.nil?
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options.each do |opt, val|
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specs.assignments[opt] = StringContainer.new val
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end
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end
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specs.parse_lines (content.split("\n"))
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specs.rewrite
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specs
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rescue e
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puts "Exception: #{e}"
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nil
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end
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end
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end
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