This commit is contained in:
2024-02-19 11:21:07 +01:00
parent de0377397f
commit e8dfb94860
34 changed files with 295 additions and 38 deletions

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@ -9,11 +9,11 @@ class Parser():
[i[0] for i in ALL_TOKENS],
precedence=[
('left', ["KEYWORD_MAYBE", "KEYWORD_RETURN"]),
('left', ["KEYWORD_IF", "KEYWORD_DEFINE", "KEYWORD_AS"]),
('left', ["KEYWORD_IF", "KEYWORD_UNTIL", "KEYWORD_DEFINE", "KEYWORD_AS"]),
('left', ["KEYWORD_DO", "BUILTIN"]),
('left', ["SYMBOL_EQUALS", "SYMBOL_SET"]),
('left', ["SYMBOL_PLUS", "SYMBOL_MINUS"]),
('left', ["SYMBOL_TIMES", "SYMBOL_DIVIDE"])
('left', ["SYMBOL_TIMES", "SYMBOL_DIVIDE", "SYMBOL_LT","SYMBOL_GT"])
]
)
@ -49,7 +49,11 @@ class Parser():
def statement_if(tokens):
return ast_nodes.StatementIf(tokens[0], tokens[2])
@self.pg.production('statement : KEYWORD_DEFINE ID SYMBOL_LT DATA_NUMERAL SYMBOL_GT KEYWORD_AS statement', precedence="KEYWORD_DEFINE")
@self.pg.production('statement : KEYWORD_UNTIL expression statement')
def statement_until(tokens):
return ast_nodes.StatementUntil(tokens[2],tokens[1])
@self.pg.production('statement : KEYWORD_DEFINE ID SYMBOL_LT DATA_INT SYMBOL_GT KEYWORD_AS statement', precedence="KEYWORD_DEFINE")
def statement_define(tokens):
return ast_nodes.StatementDefine(tokens[1].value, int(tokens[3].value), tokens[6])
@ -80,9 +84,13 @@ class Parser():
return [tokens[0]] + tokens[2]
## expression ##
@self.pg.production('expression : DATA_NUMERAL')
def exp_numeral(tokens):
return ast_nodes.ExpNumeral(float(tokens[0].value))
@self.pg.production('expression : DATA_INT')
def exp_int(tokens):
return ast_nodes.ExpInt(int(tokens[0].value))
@self.pg.production('expression : DATA_FLOAT')
def exp_int(tokens):
return ast_nodes.ExpInt(float(tokens[0].value))
@self.pg.production('expression : DATA_STRING')
def exp_string(tokens):
@ -101,6 +109,8 @@ class Parser():
@self.pg.production('expression : expression SYMBOL_TIMES expression')
@self.pg.production('expression : expression SYMBOL_DIVIDE expression')
@self.pg.production('expression : expression SYMBOL_EQUALS expression')
@self.pg.production('expression : expression SYMBOL_LT expression')
@self.pg.production('expression : expression SYMBOL_GT expression')
def exp_a_binop(tokens):
return ast_nodes.ExpABinop(tokens[1].value,tokens[0],tokens[2])
@ -108,10 +118,24 @@ class Parser():
def exp_arg(tokens):
return ast_nodes.ExpArg(int(tokens[1].value[1:]))
@self.pg.production('expression : SYMBOL_LCURL expressions SYMBOL_RCURL')
def exp_list(tokens):
return ast_nodes.ExpList(tokens[1])
@self.pg.production('expression : expression SYMBOL_LCURL expression SYMBOL_RCURL')
def exp_index(tokens):
return ast_nodes.ExpIndex(tokens[0],tokens[2])
## Error Handling ##
@self.pg.error
def error_handle(token):
raise Exception(token.name, token.value, token.source_pos)
if token.source_pos is None:
print("E002: No valediction")
elif token.source_pos.lineno == 1 and token.source_pos.colno == 1:
print("E001: No greeting")
else:
print(f"E003: Unexpected token '{token.value}' ({token.name}) at line {token.source_pos.lineno}, column {token.source_pos.colno}.")
exit()
## Finish ##
parser = self.pg.build()