31 lines
955 B
Markdown
31 lines
955 B
Markdown
# CPQ
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cpq.py compiles a cpl source file (.ou) into a quad ir file (.qud) using sly as the lexer and parser.
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## Usage
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```
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python cpq.py source_file.ou
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```
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## Structure
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The compiler is seperated into multiple files:
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- helper.py: contains a helper function (print_err)
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- items.py: contains data structs for the parser
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- lexer.py: lexer class
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- parser.py: parser class
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- cpq.py: main program and cmd handling logic
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## Implementation details
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First i wanted to use rust/c, but it seems sly is very easy to work with and is a lot less cryptic
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than flex/bison.
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the lexer class contains the token's regular expressions and the token types
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the parser class contains functions for each possible reduction, and using each variable once (with next_temp function)
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and contains the ouput code in the list lines, which in turn is to be used by
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the caller (of the parsing routine) as it wished (currently, by cpq.py to write
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to a text file if no errors occured) |