flux

installation:

Commands:

pip install pyinstaller
pyinstaller --onefile flux.py

This use of pyinstaller is to create an executable from python files. The executable is located at /dist/flux in your current folder.

nuggets:

• use type(i) to get the base type of a variable i
• using isinstance(x, Y) does you one better and tells you if x is an instance of Y class
• use termcolor module (cprint, colored) if there is the need to display colored terminal output

progress:

• lexer works (num, space, ops, parenthesis). it produces the leaves (nodes) from which our parse tree will be built [creates words]
• parser takes lexemes and build an AST (def not optimized) and builds trees [uses words to create sentences]
• parser done and added paren syntax, binary syntax

ongoing:

• write the type structure for the complex Expression types
• type checking for numbers and boolean

interpreter commands:

Flux v0.0.1
=> .st
displaying syntax tree
=> .st
not displaying syntax tree
=> .q
Arigatōgozaimashita!

Note: ".cc" interpreter command clears the terminal window.

syntax examples:

Flux v0.0.1
=> 1
1
=> .st
displaying syntax tree
=> 1
1
└──LITERAL_EXPR
    └──NUMBER [1]
=> 1 + 2
3
└──BIN_EXPR
    ├──LITERAL_EXPR
    │   └──NUMBER [1]
    ├──PLUS [+]
    └──LITERAL_EXPR
        └──NUMBER [2]
=> (-1) + (-1)
-2
└──BIN_EXPR
    ├──PAREN_EXPR
    │   ├──OPEN_PAREN [(]
    │   ├──UNARY_EXPR
    │   │   ├──MINUS [-]
    │   │   └──LITERAL_EXPR
    │   │       └──NUMBER [1]
    │   └──CLOSED_PAREN [)]
    ├──PLUS [+]
    └──PAREN_EXPR
        ├──OPEN_PAREN [(]
        ├──UNARY_EXPR
        │   ├──MINUS [-]
        │   └──LITERAL_EXPR
        │       └──NUMBER [1]
        └──CLOSED_PAREN [)]

=> -1
-1
└──UNARY_EXPR
    ├──MINUS [-]
    └──LITERAL_EXPR
        └──NUMBER [1]

=> +1 - 2
-1
└──BIN_EXPR
    ├──UNARY_EXPR
    │   ├──PLUS [+]
    │   └──LITERAL_EXPR
    │       └──NUMBER [1]
    ├──MINUS [-]
    └──LITERAL_EXPR
        └──NUMBER [2]

=> 1 + -1 + 2
2
└──BIN_EXPR
    ├──BIN_EXPR
    │   ├──LITERAL_EXPR
    │   │   └──NUMBER [1]
    │   ├──PLUS [+]
    │   └──UNARY_EXPR
    │       ├──MINUS [-]
    │       └──LITERAL_EXPR
    │           └──NUMBER [1]
    ├──PLUS [+]
    └──LITERAL_EXPR
        └──NUMBER [2]

=> +1*(2^(-2*(-1)))      
4
└──BIN_EXPR
    ├──UNARY_EXPR
    │   ├──PLUS [+]
    │   └──LITERAL_EXPR
    │       └──NUMBER [1]
    ├──MULTIPLY [*]
    └──PAREN_EXPR
        ├──OPEN_PAREN [(]
        ├──BIN_EXPR
        │   ├──LITERAL_EXPR
        │   │   └──NUMBER [2]
        │   ├──EXPONENT [^]
        │   └──PAREN_EXPR
        │       ├──OPEN_PAREN [(]
        │       ├──BIN_EXPR
        │       │   ├──UNARY_EXPR
        │       │   │   ├──MINUS [-]
        │       │   │   └──LITERAL_EXPR
        │       │   │       └──NUMBER [2]
        │       │   ├──MULTIPLY [*]
        │       │   └──PAREN_EXPR
        │       │       ├──OPEN_PAREN [(]
        │       │       ├──UNARY_EXPR
        │       │       │   ├──MINUS [-]
        │       │       │   └──LITERAL_EXPR
        │       │       │       └──NUMBER [1]
        │       │       └──CLOSED_PAREN [)]
        │       └──CLOSED_PAREN [)]
        └──CLOSED_PAREN [)]

=> true and false
False

=> false || true
True

=> (1 == (5-4)) and (1 != 100-22) || false
True
└──BIN_EXPR
    ├──BIN_EXPR
    │   ├──PAREN_EXPR
    │   │   ├──OPEN_PAREN [(]
    │   │   ├──BIN_EXPR
    │   │   │   ├──LITERAL_EXPR
    │   │   │   │   └──NUMBER [1]
    │   │   │   ├──EQUAL [==]
    │   │   │   └──PAREN_EXPR
    │   │   │       ├──OPEN_PAREN [(]
    │   │   │       ├──BIN_EXPR
    │   │   │       │   ├──LITERAL_EXPR
    │   │   │       │   │   └──NUMBER [5]
    │   │   │       │   ├──MINUS [-]
    │   │   │       │   └──LITERAL_EXPR
    │   │   │       │       └──NUMBER [4]
    │   │   │       └──CLOSED_PAREN [)]
    │   │   └──CLOSED_PAREN [)]
    │   ├──AMPERSAND [and]
    │   └──PAREN_EXPR
    │       ├──OPEN_PAREN [(]
    │       ├──BIN_EXPR
    │       │   ├──LITERAL_EXPR
    │       │   │   └──NUMBER [1]
    │       │   ├──NOTEQUAL [!=]
    │       │   └──BIN_EXPR
    │       │       ├──LITERAL_EXPR
    │       │       │   └──NUMBER [100]
    │       │       ├──MINUS [-]
    │       │       └──LITERAL_EXPR
    │       │           └──NUMBER [22]
    │       └──CLOSED_PAREN [)]
    ├──PIPE [||]
    └──LITERAL_EXPR
        └──FALSE [False]

=> abcsdcdfvsdvscd
1:15 -> Unexpected token <TokenType.identifier>. Expected **<TokenType.number>**.
  abcsdcdfvsdvscd

=> *true
1:1 -> Unexpected token <TokenType.multiply>. Expected <TokenType.number>
  *true

=> +true
1:1 -> Unary operator '+' not defined for type <class 'bool'>.
  +true

=> +1
1
└──UNARY_EXPR
    ├──PLUS [+]
    └──LITERAL_EXPR
        └──NUMBER [1]

=> .q
Arigatōgozaimashita!