Arithmetic evaluation: Difference between revisions
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Alextretyak (talk | contribs) (Added 11l) |
Alextretyak (talk | contribs) m (→{{header|11l}}) |
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Dict[String, Symbol] symbol_table |
Dict[String, Symbol] symbol_table |
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Array[String] tokens |
Array[String] tokens |
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V tokeni = -1 |
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ASTNode token_node |
ASTNode token_node |
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:token_node.symbol = :symbol_table[‘(end)’] |
:token_node.symbol = :symbol_table[‘(end)’] |
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R |
R |
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V token = :tokens[:tokeni] |
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:token_node.symbol = :symbol_table[I token.is_digit() {‘(number)’} E token] |
:token_node.symbol = :symbol_table[I token.is_digit() {‘(number)’} E token] |
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I token.is_digit() |
I token.is_digit() |
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ASTNode t = :token_node |
ASTNode t = :token_node |
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advance() |
advance() |
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V left = t.symbol.nud(t) |
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L rbp < :token_node.symbol.lbp |
L rbp < :token_node.symbol.lbp |
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t = :token_node |
t = :token_node |
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F symbol(id, bp = 0) -> & |
F symbol(id, bp = 0) -> & |
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I !(id C :symbol_table) |
I !(id C :symbol_table) |
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V s = Symbol() |
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s.id = id |
s.id = id |
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s.lbp = bp |
s.lbp = bp |
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F nud_parens(ASTNode self) |
F nud_parens(ASTNode self) |
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V expr = expression() |
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advance(‘)’) |
advance(‘)’) |
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R expr |
R expr |
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