Class: RPxem::Interpreter
- Inherits:
-
Object
- Object
- RPxem::Interpreter
- Defined in:
- lib/rpxem/interpreter.rb
Instance Attribute Summary collapse
-
#mapping ⇒ Object
Returns the value of attribute mapping.
-
#stack ⇒ Object
readonly
Returns the value of attribute stack.
-
#temp ⇒ Object
readonly
Returns the value of attribute temp.
Instance Method Summary collapse
- #default_mapping ⇒ Object
-
#initialize(mapping = {}) ⇒ Interpreter
constructor
A new instance of Interpreter.
-
#open(file, stack = RPxem::Stack.new, temp = nil) ⇒ Object
Open and execute a Pxem file.
-
#run(filename, source = '', stack = RPxem::Stack.new, temp = nil) ⇒ Object
Execute a Pxem code.
Constructor Details
#initialize(mapping = {}) ⇒ Interpreter
Returns a new instance of Interpreter.
10 11 12 |
# File 'lib/rpxem/interpreter.rb', line 10 def initialize(mapping={}) @mapping = default_mapping().merge(mapping) end |
Instance Attribute Details
#mapping ⇒ Object
Returns the value of attribute mapping.
7 8 9 |
# File 'lib/rpxem/interpreter.rb', line 7 def mapping @mapping end |
#stack ⇒ Object (readonly)
Returns the value of attribute stack.
8 9 10 |
# File 'lib/rpxem/interpreter.rb', line 8 def stack @stack end |
#temp ⇒ Object (readonly)
Returns the value of attribute temp.
8 9 10 |
# File 'lib/rpxem/interpreter.rb', line 8 def temp @temp end |
Instance Method Details
#default_mapping ⇒ Object
40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 |
# File 'lib/rpxem/interpreter.rb', line 40 def default_mapping { # I/O 'p' => 'output_all', 'o' => 'output', 'n' => 'output_num', 'i' => 'input', '_' => 'input_num', # Stack 'c' => 'copy', 's' => 'throw_away', 'v' => 'reverse', # File contents 'f' => 'read_file', 'e' => 'emurate', # Rand 'r' => 'rand', # Loop 'w' => 'w', 'x' => 'x', 'y' => 'y', 'z' => 'z', 'a' => 'a', # Temporary area 't' => 'to_temp', 'm' => 'from_temp', # Do nothing 'd' => 'void', # Math '+' => 'addition', '-' => 'subtraction', '!' => 'multiplication', '$' => 'quotient', '%' => 'surplus', } end |
#open(file, stack = RPxem::Stack.new, temp = nil) ⇒ Object
Open and execute a Pxem file
15 16 17 |
# File 'lib/rpxem/interpreter.rb', line 15 def open(file, stack=RPxem::Stack.new, temp=nil) run(File.basename(file), File.open(file).read, stack, temp) end |
#run(filename, source = '', stack = RPxem::Stack.new, temp = nil) ⇒ Object
Execute a Pxem code
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 |
# File 'lib/rpxem/interpreter.rb', line 20 def run(filename, source='', stack=RPxem::Stack.new, temp=nil) @filename, @source, @stack, @temp = filename.each_byte.to_a, source, stack, temp buffer, @cursor, length = RPxem::Stack.new, 0, @filename.length while (@cursor < length) char = @filename[@cursor] @cursor += 1 if (@cursor < length && 46 == char && name = @mapping[@filename[@cursor].chr.downcase]) @stack.push(*buffer) buffer = RPxem::Stack.new __send__(name) @cursor += 1 else buffer.unshift(char) end end return @stack end |