Basic declaration adn assignation recognition
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@ -1 +1,2 @@
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interegular==0.3.3
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lark==1.2.2
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80
spf.lark
80
spf.lark
@ -1,16 +1,22 @@
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start: (instruction)* TERMINAL
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start: (instruction)*
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instruction: KEYWORD TERMINAL
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| declaration TERMINAL
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instruction: keyword expression TERMINAL
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| type declaration TERMINAL
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| assignation TERMINAL
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| test
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| loop
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declaration: TYPE VARIABLE
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| TYPE VARIABLE "=" expression
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declaration: VARIABLE (EQUAL_SIGN expression)?
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assignation: VARIABLE EQUAL_SIGN expression
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expression: literal
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| list
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| range
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| expression operator expression
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| operator expression
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//| expression operator expression
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//| operator expression
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type: "booléen" | "entier" | "texte" | "liste"
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literal: ENTIER
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| BOOLEEN
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@ -25,35 +31,49 @@ range: "[" ENTIER? ":" ENTIER? "]"
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controls: test
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| loop
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operator: PLUS
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| MINUS
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| TIMES
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| DIVIDE // TODO: not complete
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operator: PLUS_SIGN
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| MINUS_SIGN
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| TIMES_SIGN
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| DIVIDE_SIGN // TODO: not complete
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PLUS: "+"
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MINUS: "-"
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TIMES: "*"
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DIVIDE: "/"
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PLUS_SIGN: "+"
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MINUS_SIGN: "-"
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TIMES_SIGN: "*"
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DIVIDE_SIGN: "/"
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EQUAL_SIGN: "="
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test: "si" expression "alors" "{" instruction* "}"
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| "si" expression "alors" "{" instruction* "}" "sinon" "{" instruction* "}"
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loop: "si" expression "alors" "{" (instruction)* "}"
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COMMENT: "#" /[^\n]/
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%ignore COMMENT
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loop: WHILES_KW expression WHILEE_KW "{" (instruction)* "}"
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TERMINAL: ";"
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VARIABLE: /([a-z]|[A-Z]|_)+([a-z]|[A-Z]|[0-9]|_)+/ // TODO: ajouter accents
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TYPE: "booléen" | "entier" | "texte" | "liste"
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KEYWORD: "ajouter" | "afficher"
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ENTIER: /[1-9][0-9]*/
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BOOLEEN: "vrai" | "faux"
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STRING: /\w+/
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VAR_CHARS: /[a-zA-Zçâêîôûéàèìòùëïü_]/
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VARIABLE: VAR_CHARS (VAR_CHARS | /[0-9]/)*
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ADD_KW: "ajouter"
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SHOW_KW: "afficher"
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WHILES_KW: "tant que"
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WHILEE_KW: "faire"
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keyword: ADD_KW
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| SHOW_KW
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%import common.INT -> ENTIER
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TRUE_KW: "vrai"
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FALSE_KW: "faux"
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BOOLEEN: TRUE_KW
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| FALSE_KW
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%import common.ESCAPED_STRING -> STRING
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COMMENT: /#[^\n]*/
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%ignore COMMENT
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%import common.WS
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%ignore WS
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6
spf.py
6
spf.py
@ -29,11 +29,13 @@ def main():
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print("Trace activated (TODO)", file=sys.stderr)
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with open("spf.lark") as grammar:
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spf_parser = lark.Lark(grammar, parser="lalr", transformer=SPFTransformer)
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spf_parser = lark.Lark(grammar, parser="lalr", strict=True, debug=True)
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with open(args.spf_file) as spf_input:
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program = spf_input.read()
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spf_parser.parse(program)
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parsed = spf_parser.parse(program)
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print(parsed.pretty())
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if __name__ == "__main__":
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