This user manual is for the Parser State Machine that comes built into this project.
To run the standard example:
ruby init.rb -f examples/example.txt
The file that is going to be interpreted by the parser is defined by the
-f --file= command line arguments.
The Parser identifies the following group of tokens. Along each type a Regex is included, this regex describes all valid values for each token type.
- Floating Point numbers
Variables: They are composed of capital and lowercase letters a to z and A to Z. They can't include any other type of symbols.
# Valid variable: avariable = 5 # Not valid variable: notvalidv3ri4bl3 = 3-5
Substraction: If the operator is directly followed by a number it's assumed it is a unary operator and thus should be part of an Integer.
# Interpreted as -5: a = -5 # Interpreted as 3 and -5: a = 3-5 # Interpreted as 3 minus 5: a = 3 - 5
Sum: All instances of this token are interpreted as the sum operator. To represent a positive number leave it without a sign.
# Interpreted as +5: a = 5 # Interpreted as -3 plus +5: a = -3 + 5