### Home Classes Methods

### In Files

- lib/taskjuggler/ProjectFileParser.rb

### Parent

TaskJuggler::TextParser

### Methods

- ::new
- #close
- #nextToken
- #open
- #parseReportAttributes
- #returnToken
- #setGlobalMacros

### Included Modules

- TaskJuggler::TjpSyntaxRules

### Files

- CHANGELOG
- COPYING
- README.rdoc

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No matching classes.

# TaskJuggler::ProjectFileParser

This class specializes the TextParser class for use with TaskJuggler project files (TJP Files). The primary purpose is to provide functionality that make it more comfortable to define the TaskJuggler syntax in a form that is human creatable but also powerful enough to define the data structures the parser needs to understand the syntax.

By adding some additional information to the syntax rules, we can also generate the complete reference manual from this rule set.

### Public Class Methods

new() click to toggle source

Create the parser object.

    # File lib/taskjuggler/ProjectFileParser.rb, line 33
    def initialize
      super

      # Define the token types that the ProjectFileScanner may return for
      # variable elements.
      @variables = [ :INTEGER, :FLOAT, :DATE, :TIME, :STRING, :LITERAL,
                     :ID, :ID_WITH_COLON, :ABSOLUTE_ID, :MACRO ]

      initRules
      updateParserTables

      @project = nil
    end

### Public Instance Methods

close() click to toggle source

Call this function to cleanup the parser structures after the file processing has been completed.

    # File lib/taskjuggler/ProjectFileParser.rb, line 68
    def close
      @scanner.close
    end

nextToken() click to toggle source

This function will deliver the next token from the scanner. A token is a two element Array that contains the ID or type of the token as well as the text string of the token.

    # File lib/taskjuggler/ProjectFileParser.rb, line 75
    def nextToken
      @scanner.nextToken
    end

open(file, master, fileNameIsBuffer = false) click to toggle source

Call this function with the master file to start processing a TJP file or a set of TJP files.

    # File lib/taskjuggler/ProjectFileParser.rb, line 49
    def open(file, master, fileNameIsBuffer = false)
      @scanner = ProjectFileScanner.new(file)
      # We need the ProjectFileScanner object for error reporting.
      if master && !fileNameIsBuffer && file != '.' && file[-4, 4] != '.tjp'
        error('illegal_extension', "Project file name must end with " +
              '\.tjp\ extension')
      end
      @scanner.open(fileNameIsBuffer)

      @property = nil
      @scenarioIdx = 0
      initFileStack
      # Stack for property IDs. Needed to handle nested 'supplement'
      # statements.
      @idStack = []
    end

parseReportAttributes(report, attributes) click to toggle source

    # File lib/taskjuggler/ProjectFileParser.rb, line 102
    def parseReportAttributes(report, attributes)
      open(attributes, false, true)
      @property = report
      @project = report.project
      parse(:reportAttributes)
    end

returnToken(token) click to toggle source

This function can be used to return tokens. Returned tokens will be pushed on a LIFO stack. To preserve the order of the original tokens the last token must be returned first. This mechanism is used to implement look-ahead functionality.

    # File lib/taskjuggler/ProjectFileParser.rb, line 83
    def returnToken(token)
      @scanner.returnToken(token)
    end

setGlobalMacros() click to toggle source

A set of standard marcros is defined in all files as soon as the project header has been read. Calling this functions gets the values from @project and inserts the Macro objects into the ProjectFileScanner.

    # File lib/taskjuggler/ProjectFileParser.rb, line 90
    def setGlobalMacros
      @scanner.addMacro(Macro.new('projectstart', @project['start'].to_s,
                                  @scanner.sourceFileInfo))
      @scanner.addMacro(Macro.new('projectend', @project['end'].to_s,
                                  @scanner.sourceFileInfo))
      @scanner.addMacro(Macro.new('now', @project['now'].to_s,
                                  @scanner.sourceFileInfo))
      @scanner.addMacro(Macro.new('today', @project['now'].
                                   to_s(@project['timeFormat']),
                                  @scanner.sourceFileInfo))
    end

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