Contents

describe Gobstones::Parser, "program definitions" do

  it "should parse a simple program with a single main" do
    main_def = Main.new CmdBlock.new([]), NoReturnStatement.new
    program = Program.new [], main_def

    expect('procedure Main(){}').to be_parsed_as(:program).and_return(program)
  end

  it "should parse a program with Main and procedures" do
    main_def = Main.new CmdBlock.new([]), NoReturnStatement.new
    proc_1 = Procedure.new 'Procedure1', VarTuple.new([]), CmdBlock.new([])
    proc_2 = Procedure.new 'Procedure2', VarTuple.new([]), CmdBlock.new([])
    program = Program.new [proc_1, proc_2], main_def

    gbs_code = <<GBS
procedure Procedure1(){ }

procedure Procedure2 () {}

procedure Main() {}
GBS
    expect(gbs_code).to be_parsed_as(:program).and_return(program)
  end

  it "should parse a program with Main, procedures and functions" do
    main_def = Main.new CmdBlock.new([]), NoReturnStatement.new
    proc_1 = Procedure.new 'Procedure1', VarTuple.new([]), CmdBlock.new([])
    func_1 = Function.new 'function1', VarTuple.new([]), CmdBlock.new([]), ReturnFromFunction.new([42.to_gbs_num])
    proc_2 = Procedure.new 'Procedure2', VarTuple.new([]), CmdBlock.new([])
    program = Program.new [proc_1, func_1, proc_2], main_def
    gbs_code = <<GBS
procedure Procedure1(){ }

function function1() { return (42) }

procedure Procedure2 () {}

procedure Main() {}
GBS
    expect(gbs_code).to be_parsed_as(:program).and_return(program)
  end

  it "should not parse a program without a Main definition" do
    expect('procedure Procedure1(){}
    procedure Procedure2() {}').to be_parsed_as(:program).and_fail
  end

  it "should not parse a program if Main is not the last definition" do
    expect('procedure Procedure1() {}
    procedure Main() {}
    procedure Procedure2() {}').to be_parsed_as(:program).and_fail
  end

end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
gobstones-0.0.1.1	spec/parser/gobstones_program_spec.rb