Arithmetic evaluation: Difference between revisions
Content added Content deleted
m (→{{header|Phix}}: demo\rosetta\Arithmetic_evaluation.exw) |
Alextretyak (talk | contribs) m (→{{header|11l}}) |
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Dict[String, Symbol] symbol_table |
Dict[String, Symbol] symbol_table |
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[String] tokens |
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V tokeni = -1 |
V tokeni = -1 |
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ASTNode token_node |
ASTNode token_node |
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:tokeni++ |
:tokeni++ |
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:token_node = ASTNode() |
:token_node = ASTNode() |
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I :tokeni == tokens.len |
I :tokeni == :tokens.len |
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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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F expression(rbp = 0) |
F expression(rbp = 0) |
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ASTNode t = :token_node |
ASTNode t = move(:token_node) |
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advance() |
advance() |
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V left = t.symbol.nud(t) |
V left = t.symbol.nud(move(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 = move(:token_node) |
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advance() |
advance() |
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left = t.symbol.led(t, left) |
left = t.symbol.led(t, move(left)) |
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R left |
R left |
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F infix(id, bp) |
F infix(id, bp) |
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F led(ASTNode self, left) |
F led(ASTNode self, ASTNode left) |
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self.first_child = left |
self.first_child = left |
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self.second_child = expression(self.symbol.led_bp) |
self.second_child = expression(self.symbol.led_bp) |
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| Line 119: | Line 119: | ||
R self |
R self |
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symbol(id).set_nud_bp(bp, nud) |
symbol(id).set_nud_bp(bp, nud) |
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infix(‘+’, 1) |
infix(‘+’, 1) |
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infix(‘-’, 1) |
infix(‘-’, 1) |
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prefix(‘-’, 3) |
prefix(‘-’, 3) |
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F nud(ASTNode self) |
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| ⚫ | |||
R self |
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| ⚫ | |||
symbol(‘(end)’) |
symbol(‘(end)’) |
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