# vim: syntax=ruby # the parser class Puppet::Parser::Parser token STRING DQPRE DQMID DQPOST token LBRACK RBRACK LBRACE RBRACE SYMBOL FARROW COMMA TRUE token FALSE EQUALS APPENDS LESSEQUAL NOTEQUAL DOT COLON LLCOLLECT RRCOLLECT token QMARK LPAREN RPAREN ISEQUAL GREATEREQUAL GREATERTHAN LESSTHAN token IF ELSE IMPORT DEFINE ELSIF VARIABLE CLASS INHERITS NODE BOOLEAN token NAME SEMIC CASE DEFAULT AT LCOLLECT RCOLLECT CLASSNAME CLASSREF token NOT OR AND UNDEF PARROW PLUS MINUS TIMES DIV LSHIFT RSHIFT UMINUS token MATCH NOMATCH REGEX IN_EDGE OUT_EDGE IN_EDGE_SUB OUT_EDGE_SUB token IN prechigh right NOT nonassoc UMINUS left IN MATCH NOMATCH left TIMES DIV left MINUS PLUS left LSHIFT RSHIFT left NOTEQUAL ISEQUAL left GREATEREQUAL GREATERTHAN LESSTHAN LESSEQUAL left AND left OR preclow rule program: statements { if val[0] # Make sure we always return an array. if val[0].is_a?(AST::ASTArray) if val[0].children.empty? result = nil else result = val[0] end else result = aryfy(val[0]) end else result = nil end } | nil statements: statement | statements statement { if val[0] and val[1] if val[0].instance_of?(AST::ASTArray) val[0].push(val[1]) result = val[0] else result = ast AST::ASTArray, :children => [val[0],val[1]] end elsif obj = (val[0] || val[1]) result = obj else result = nil end } # The main list of valid statements statement: resource | virtualresource | collection | assignment | casestatement | ifstatement_begin | import | fstatement | definition | hostclass | nodedef | resourceoverride | append | relationship relationship: relationship_side edge relationship_side { result = AST::Relationship.new(val[0], val[2], val[1][:value], ast_context) } | relationship edge relationship_side { result = AST::Relationship.new(val[0], val[2], val[1][:value], ast_context) } relationship_side: resource | resourceref | collection edge: IN_EDGE | OUT_EDGE | IN_EDGE_SUB | OUT_EDGE_SUB fstatement: NAME LPAREN funcvalues RPAREN { args = aryfy(val[2]) result = ast AST::Function, :name => val[0][:value], :line => val[0][:line], :arguments => args, :ftype => :statement } | NAME LPAREN funcvalues COMMA RPAREN { args = aryfy(val[2]) result = ast AST::Function, :name => val[0][:value], :line => val[0][:line], :arguments => args, :ftype => :statement } | NAME LPAREN RPAREN { result = ast AST::Function, :name => val[0][:value], :line => val[0][:line], :arguments => AST::ASTArray.new({}), :ftype => :statement } | NAME funcvalues { args = aryfy(val[1]) result = ast AST::Function, :name => val[0][:value], :line => val[0][:line], :arguments => args, :ftype => :statement } funcvalues: namestring | resourceref | funcvalues COMMA namestring { result = aryfy(val[0], val[2]) result.line = @lexer.line result.file = @lexer.file } | funcvalues COMMA resourceref { unless val[0].is_a?(AST::ASTArray) val[0] = aryfy(val[0]) end val[0].push(val[2]) result = val[0] } # This is *almost* an rvalue, but I couldn't get a full # rvalue to work without scads of shift/reduce conflicts. namestring: name | variable | type | boolean | funcrvalue | selector | quotedtext | hasharrayaccesses | CLASSNAME { result = ast AST::Name, :value => val[0][:value] } resource: classname LBRACE resourceinstances endsemi RBRACE { @lexer.commentpop array = val[2] array = [array] if array.instance_of?(AST::ResourceInstance) result = ast AST::ASTArray # this iterates across each specified resourceinstance array.each { |instance| raise Puppet::Dev, "Got something that isn't an instance" unless instance.instance_of?(AST::ResourceInstance) # now, i need to somehow differentiate between those things with # arrays in their names, and normal things result.push ast( AST::Resource, :type => val[0], :title => instance[0], :parameters => instance[1]) } } | classname LBRACE params endcomma RBRACE { # This is a deprecated syntax. error "All resource specifications require names" } | classref LBRACE params endcomma RBRACE { # a defaults setting for a type @lexer.commentpop result = ast(AST::ResourceDefaults, :type => val[0], :parameters => val[2]) } # Override a value set elsewhere in the configuration. resourceoverride: resourceref LBRACE anyparams endcomma RBRACE { @lexer.commentpop result = ast AST::ResourceOverride, :object => val[0], :parameters => val[2] } # Exported and virtual resources; these don't get sent to the client # unless they get collected elsewhere in the db. virtualresource: at resource { type = val[0] if (type == :exported and ! Puppet[:storeconfigs]) and ! Puppet[:parseonly] Puppet.warning addcontext("You cannot collect without storeconfigs being set") end error "Defaults are not virtualizable" if val[1].is_a? AST::ResourceDefaults method = type.to_s + "=" # Just mark our resources as exported and pass them through. if val[1].instance_of?(AST::ASTArray) val[1].each do |obj| obj.send(method, true) end else val[1].send(method, true) end result = val[1] } at: AT { result = :virtual } | AT AT { result = :exported } # A collection statement. Currently supports no arguments at all, but eventually # will, I assume. collection: classref collectrhand LBRACE anyparams endcomma RBRACE { @lexer.commentpop Puppet.warning addcontext("Collection names must now be capitalized") if val[0] =~ /^[a-z]/ type = val[0].downcase args = {:type => type} if val[1].is_a?(AST::CollExpr) args[:query] = val[1] args[:query].type = type args[:form] = args[:query].form else args[:form] = val[1] end if args[:form] == :exported and ! Puppet[:storeconfigs] and ! Puppet[:parseonly] Puppet.warning addcontext("You cannot collect exported resources without storeconfigs being set; the collection will be ignored") end args[:override] = val[3] result = ast AST::Collection, args } | classref collectrhand { if val[0] =~ /^[a-z]/ Puppet.warning addcontext("Collection names must now be capitalized") end type = val[0].downcase args = {:type => type } if val[1].is_a?(AST::CollExpr) args[:query] = val[1] args[:query].type = type args[:form] = args[:query].form else args[:form] = val[1] end if args[:form] == :exported and ! Puppet[:storeconfigs] and ! Puppet[:parseonly] Puppet.warning addcontext("You cannot collect exported resources without storeconfigs being set; the collection will be ignored") end result = ast AST::Collection, args } collectrhand: LCOLLECT collstatements RCOLLECT { if val[1] result = val[1] result.form = :virtual else result = :virtual end } | LLCOLLECT collstatements RRCOLLECT { if val[1] result = val[1] result.form = :exported else result = :exported end } # A mini-language for handling collection comparisons. This is organized # to avoid the need for precedence indications. collstatements: nil | collstatement | collstatements colljoin collstatement { result = ast AST::CollExpr, :test1 => val[0], :oper => val[1], :test2 => val[2] } collstatement: collexpr | LPAREN collstatements RPAREN { result = val[1] result.parens = true } colljoin: AND { result=val[0][:value] } | OR { result=val[0][:value] } collexpr: colllval ISEQUAL simplervalue { result = ast AST::CollExpr, :test1 => val[0], :oper => val[1][:value], :test2 => val[2] #result = ast AST::CollExpr #result.push *val } | colllval NOTEQUAL simplervalue { result = ast AST::CollExpr, :test1 => val[0], :oper => val[1][:value], :test2 => val[2] #result = ast AST::CollExpr #result.push *val } colllval: variable | name resourceinst: resourcename COLON params endcomma { result = ast AST::ResourceInstance, :children => [val[0],val[2]] } resourceinstances: resourceinst | resourceinstances SEMIC resourceinst { if val[0].instance_of?(AST::ResourceInstance) result = ast AST::ASTArray, :children => [val[0],val[2]] else val[0].push val[2] result = val[0] end } endsemi: # nothing | SEMIC undef: UNDEF { result = ast AST::Undef, :value => :undef } name: NAME { result = ast AST::Name, :value => val[0][:value], :line => val[0][:line] } type: CLASSREF { result = ast AST::Type, :value => val[0][:value], :line => val[0][:line] } resourcename: quotedtext | name | type | selector | variable | array | hasharrayaccesses assignment: VARIABLE EQUALS expression { raise Puppet::ParseError, "Cannot assign to variables in other namespaces" if val[0][:value] =~ /::/ # this is distinct from referencing a variable variable = ast AST::Name, :value => val[0][:value], :line => val[0][:line] result = ast AST::VarDef, :name => variable, :value => val[2], :line => val[0][:line] } | hasharrayaccess EQUALS expression { result = ast AST::VarDef, :name => val[0], :value => val[2] } append: VARIABLE APPENDS expression { variable = ast AST::Name, :value => val[0][:value], :line => val[0][:line] result = ast AST::VarDef, :name => variable, :value => val[2], :append => true, :line => val[0][:line] } params: # nothing { result = ast AST::ASTArray } | param { result = val[0] } | params COMMA param { if val[0].instance_of?(AST::ASTArray) val[0].push(val[2]) result = val[0] else result = ast AST::ASTArray, :children => [val[0],val[2]] end } param: NAME FARROW rvalue { result = ast AST::ResourceParam, :param => val[0][:value], :line => val[0][:line], :value => val[2] } addparam: NAME PARROW rvalue { result = ast AST::ResourceParam, :param => val[0][:value], :line => val[0][:line], :value => val[2], :add => true } anyparam: param | addparam anyparams: # nothing { result = ast AST::ASTArray } | anyparam { result = val[0] } | anyparams COMMA anyparam { if val[0].instance_of?(AST::ASTArray) val[0].push(val[2]) result = val[0] else result = ast AST::ASTArray, :children => [val[0],val[2]] end } rvalues: rvalue | rvalues comma rvalue { if val[0].instance_of?(AST::ASTArray) result = val[0].push(val[2]) else result = ast AST::ASTArray, :children => [val[0],val[2]] end } simplervalue: quotedtext | name | type | boolean | selector | variable rvalue: quotedtext | name | type | boolean | selector | variable | array | hash | hasharrayaccesses | resourceref | funcrvalue | undef # We currently require arguments in these functions. funcrvalue: NAME LPAREN funcvalues RPAREN { args = aryfy(val[2]) result = ast AST::Function, :name => val[0][:value], :line => val[0][:line], :arguments => args, :ftype => :rvalue } | NAME LPAREN RPAREN { result = ast AST::Function, :name => val[0][:value], :line => val[0][:line], :arguments => AST::ASTArray.new({}), :ftype => :rvalue } quotedtext: STRING { result = ast AST::String, :value => val[0][:value], :line => val[0][:line] } | DQPRE dqrval { result = ast AST::Concat, :value => [ast(AST::String,val[0])]+val[1], :line => val[0][:line] } dqrval: expression dqtail { result = [val[0]] + val[1] } dqtail: DQPOST { result = [ast(AST::String,val[0])] } | DQMID dqrval { result = [ast(AST::String,val[0])] + val[1] } boolean: BOOLEAN { result = ast AST::Boolean, :value => val[0][:value], :line => val[0][:line] } resourceref: NAME LBRACK rvalues RBRACK { Puppet.warning addcontext("Deprecation notice: Resource references should now be capitalized") result = ast AST::ResourceReference, :type => val[0][:value], :line => val[0][:line], :title => val[2] } | classref LBRACK rvalues RBRACK { result = ast AST::ResourceReference, :type => val[0], :title => val[2] } ifstatement_begin: IF ifstatement { result = val[1] } ifstatement: expression LBRACE statements RBRACE else { @lexer.commentpop args = { :test => val[0], :statements => val[2] } args[:else] = val[4] if val[4] result = ast AST::IfStatement, args } | expression LBRACE RBRACE else { @lexer.commentpop args = { :test => val[0], :statements => ast(AST::Nop) } args[:else] = val[3] if val[3] result = ast AST::IfStatement, args } else: # nothing | ELSIF ifstatement { result = ast AST::Else, :statements => val[1] } | ELSE LBRACE statements RBRACE { @lexer.commentpop result = ast AST::Else, :statements => val[2] } | ELSE LBRACE RBRACE { @lexer.commentpop result = ast AST::Else, :statements => ast(AST::Nop) } # Unlike yacc/bison, it seems racc # gives tons of shift/reduce warnings # with the following syntax: # # expression: ... # | expression arithop expressio { ... } # # arithop: PLUS | MINUS | DIVIDE | TIMES ... # # So I had to develop the expression by adding one rule # per operator :-( expression: rvalue | expression IN rvalue { result = ast AST::InOperator, :lval => val[0], :rval => val[2] } | expression MATCH regex { result = ast AST::MatchOperator, :operator => val[1][:value], :lval => val[0], :rval => val[2] } | expression NOMATCH regex { result = ast AST::MatchOperator, :operator => val[1][:value], :lval => val[0], :rval => val[2] } | expression PLUS expression { result = ast AST::ArithmeticOperator, :operator => val[1][:value], :lval => val[0], :rval => val[2] } | expression MINUS expression { result = ast AST::ArithmeticOperator, :operator => val[1][:value], :lval => val[0], :rval => val[2] } | expression DIV expression { result = ast AST::ArithmeticOperator, :operator => val[1][:value], :lval => val[0], :rval => val[2] } | expression TIMES expression { result = ast AST::ArithmeticOperator, :operator => val[1][:value], :lval => val[0], :rval => val[2] } | expression LSHIFT expression { result = ast AST::ArithmeticOperator, :operator => val[1][:value], :lval => val[0], :rval => val[2] } | expression RSHIFT expression { result = ast AST::ArithmeticOperator, :operator => val[1][:value], :lval => val[0], :rval => val[2] } | MINUS expression =UMINUS { result = ast AST::Minus, :value => val[1] } | expression NOTEQUAL expression { result = ast AST::ComparisonOperator, :operator => val[1][:value], :lval => val[0], :rval => val[2] } | expression ISEQUAL expression { result = ast AST::ComparisonOperator, :operator => val[1][:value], :lval => val[0], :rval => val[2] } | expression GREATERTHAN expression { result = ast AST::ComparisonOperator, :operator => val[1][:value], :lval => val[0], :rval => val[2] } | expression GREATEREQUAL expression { result = ast AST::ComparisonOperator, :operator => val[1][:value], :lval => val[0], :rval => val[2] } | expression LESSTHAN expression { result = ast AST::ComparisonOperator, :operator => val[1][:value], :lval => val[0], :rval => val[2] } | expression LESSEQUAL expression { result = ast AST::ComparisonOperator, :operator => val[1][:value], :lval => val[0], :rval => val[2] } | NOT expression { result = ast AST::Not, :value => val[1] } | expression AND expression { result = ast AST::BooleanOperator, :operator => val[1][:value], :lval => val[0], :rval => val[2] } | expression OR expression { result = ast AST::BooleanOperator, :operator => val[1][:value], :lval => val[0], :rval => val[2] } | LPAREN expression RPAREN { result = val[1] } casestatement: CASE rvalue LBRACE caseopts RBRACE { @lexer.commentpop options = val[3] options = ast AST::ASTArray, :children => [val[3]] unless options.instance_of?(AST::ASTArray) result = ast AST::CaseStatement, :test => val[1], :options => options } caseopts: caseopt | caseopts caseopt { if val[0].instance_of?(AST::ASTArray) val[0].push val[1] result = val[0] else result = ast AST::ASTArray, :children => [val[0], val[1]] end } caseopt: casevalues COLON LBRACE statements RBRACE { @lexer.commentpop result = ast AST::CaseOpt, :value => val[0], :statements => val[3] } | casevalues COLON LBRACE RBRACE { @lexer.commentpop result = ast( AST::CaseOpt, :value => val[0], :statements => ast(AST::ASTArray) ) } casevalues: selectlhand | casevalues COMMA selectlhand { if val[0].instance_of?(AST::ASTArray) val[0].push(val[2]) result = val[0] else result = ast AST::ASTArray, :children => [val[0],val[2]] end } selector: selectlhand QMARK svalues { result = ast AST::Selector, :param => val[0], :values => val[2] } svalues: selectval | LBRACE sintvalues endcomma RBRACE { @lexer.commentpop result = val[1] } sintvalues: selectval | sintvalues comma selectval { if val[0].instance_of?(AST::ASTArray) val[0].push(val[2]) result = val[0] else result = ast AST::ASTArray, :children => [val[0],val[2]] end } selectval: selectlhand FARROW rvalue { result = ast AST::ResourceParam, :param => val[0], :value => val[2] } selectlhand: name | type | quotedtext | variable | funcrvalue | boolean | undef | hasharrayaccess | DEFAULT { result = ast AST::Default, :value => val[0][:value], :line => val[0][:line] } | regex # These are only used for importing, and we don't interpolate there. string: STRING { result = [val[0][:value]] } strings: string | strings COMMA string { result = val[0] += val[2] } import: IMPORT strings { val[1].each do |file| import(file) end result = AST::ASTArray.new(:children => []) } # Disable definition inheritance for now. 8/27/06, luke #definition: DEFINE NAME argumentlist parent LBRACE statements RBRACE { definition: DEFINE classname argumentlist LBRACE statements RBRACE { @lexer.commentpop newdefine classname(val[1]), :arguments => val[2], :code => val[4], :line => val[0][:line] @lexer.indefine = false result = nil #} | DEFINE NAME argumentlist parent LBRACE RBRACE { } | DEFINE classname argumentlist LBRACE RBRACE { @lexer.commentpop newdefine classname(val[1]), :arguments => val[2], :line => val[0][:line] @lexer.indefine = false result = nil } #hostclass: CLASS NAME argumentlist parent LBRACE statements RBRACE { hostclass: CLASS classname argumentlist classparent LBRACE statements RBRACE { @lexer.commentpop # Our class gets defined in the parent namespace, not our own. @lexer.namepop newclass classname(val[1]), :arguments => val[2], :parent => val[3], :code => val[5], :line => val[0][:line] result = nil } | CLASS classname argumentlist classparent LBRACE RBRACE { @lexer.commentpop # Our class gets defined in the parent namespace, not our own. @lexer.namepop newclass classname(val[1]), :arguments => val[2], :parent => val[3], :line => val[0][:line] result = nil } nodedef: NODE hostnames nodeparent LBRACE statements RBRACE { @lexer.commentpop newnode val[1], :parent => val[2], :code => val[4], :line => val[0][:line] result = nil } | NODE hostnames nodeparent LBRACE RBRACE { @lexer.commentpop newnode val[1], :parent => val[2], :line => val[0][:line] result = nil } classref: CLASSREF { result = val[0][:value] } classname: NAME { result = val[0][:value] } | CLASSNAME { result = val[0][:value] } | CLASS { result = "class" } # Multiple hostnames, as used for node names. These are all literal # strings, not AST objects. hostnames: nodename | hostnames COMMA nodename { result = val[0] result = [result] unless result.is_a?(Array) result << val[2] } nodename: hostname { result = ast AST::HostName, :value => val[0] } hostname: NAME { result = val[0][:value] } | STRING { result = val[0][:value] } | DEFAULT { result = val[0][:value] } | regex nil: { result = nil } nothing: { result = ast AST::ASTArray, :children => [] } argumentlist: nil | LPAREN nothing RPAREN { result = nil } | LPAREN arguments RPAREN { result = val[1] result = [result] unless result[0].is_a?(Array) } arguments: argument | arguments COMMA argument { result = val[0] result = [result] unless result[0].is_a?(Array) result << val[2] } argument: NAME EQUALS rvalue { Puppet.warning addcontext("Deprecation notice: must now include '$' in prototype") result = [val[0][:value], val[2]] } | NAME { Puppet.warning addcontext("Deprecation notice: must now include '$' in prototype") result = [val[0][:value]] } | VARIABLE EQUALS rvalue { result = [val[0][:value], val[2]] } | VARIABLE { result = [val[0][:value]] } nodeparent: nil | INHERITS hostname { result = val[1] } classparent: nil | INHERITS classnameordefault { result = val[1] } classnameordefault: classname | DEFAULT variable: VARIABLE { result = ast AST::Variable, :value => val[0][:value], :line => val[0][:line] } array: LBRACK rvalues RBRACK { if val[1].instance_of?(AST::ASTArray) result = val[1] else result = ast AST::ASTArray, :children => [val[1]] end } | LBRACK rvalues COMMA RBRACK { if val[1].instance_of?(AST::ASTArray) result = val[1] else result = ast AST::ASTArray, :children => [val[1]] end } | LBRACK RBRACK { result = ast AST::ASTArray } comma: FARROW | COMMA endcomma: # nothing | COMMA { result = nil } regex: REGEX { result = ast AST::Regex, :value => val[0][:value] } hash: LBRACE hashpairs RBRACE { if val[1].instance_of?(AST::ASTHash) result = val[1] else result = ast AST::ASTHash, { :value => val[1] } end } | LBRACE hashpairs COMMA RBRACE { if val[1].instance_of?(AST::ASTHash) result = val[1] else result = ast AST::ASTHash, { :value => val[1] } end } | LBRACE RBRACE { result = ast AST::ASTHash } hashpairs: hashpair | hashpairs COMMA hashpair { if val[0].instance_of?(AST::ASTHash) result = val[0].merge(val[2]) else result = ast AST::ASTHash, :value => val[0] result.merge(val[2]) end } hashpair: key FARROW rvalue { result = ast AST::ASTHash, { :value => { val[0] => val[2] } } } key: NAME { result = val[0][:value] } | quotedtext { result = val[0] } hasharrayaccess: VARIABLE LBRACK rvalue RBRACK { result = ast AST::HashOrArrayAccess, :variable => val[0][:value], :key => val[2] } hasharrayaccesses: hasharrayaccess | hasharrayaccesses LBRACK rvalue RBRACK { result = ast AST::HashOrArrayAccess, :variable => val[0], :key => val[2] } end ---- header ---- require 'puppet' require 'puppet/util/loadedfile' require 'puppet/parser/lexer' require 'puppet/parser/ast' module Puppet class ParseError < Puppet::Error; end class ImportError < Racc::ParseError; end class AlreadyImportedError < ImportError; end end ---- inner ---- # It got too annoying having code in a file that needs to be compiled. require 'puppet/parser/parser_support' # Make emacs happy # Local Variables: # mode: ruby # End: