53 lines
1.5 KiB
TeX
53 lines
1.5 KiB
TeX
%! Author = manuel
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%! Date = 24.03.24
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% Preamble
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\documentclass[11pt]{article}
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% Packages
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\usepackage{amsmath}
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% Document
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\begin{document}
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\begin{align}
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[\text{Prog}]
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&\to [\text{Stmt}]^* \\
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[\text{Stmt}] &\to
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\begin{cases}
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\text{exit}([\text{Expr}]); \\
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\text{let}\ \text{ident} = [\text{Expr}]; \\
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\text{ident} = \text{[Expr]}; \\
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\text{if} ([\text{Expr}])[\text{Scope}]\text{[IfPred]}\\
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[\text{Scope}]
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\end{cases} \\
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\text{[Scope]} &\to {[\text{Stmt}]^*} \\
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\text{[IfPred]} &\to
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\begin{cases}
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\text{elif}(\text{[Expr]})\text{[Scope]}\text{[IfPred]} \\
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\text{else}\text{[Scope]} \\
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\epsilon
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\end{cases} \\
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[\text{Expr}] &\to
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\begin{cases}
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[\text{Term}]
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\\
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[\text{BinExpr}]
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\end{cases} \\
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[\text{BinExpr}] &\to
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\begin{cases}
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[\text{Expr}] \^\ [\text{Expr}] & \text{prec} = 3 \\
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[\text{Expr}] * [\text{Expr}] & \text{prec} = 2 \\
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[\text{Expr}] / [\text{Expr}] & \text{prec} = 2 \\
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[\text{Expr}] \% [\text{Expr}] & \text{prec} = 2 \\
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[\text{Expr}] + [\text{Expr}] & \text{prec} = 1 \\
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[\text{Expr}] - [\text{Expr}] & \text{prec} = 1 \\
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\end{cases} \\
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[\text{Term}] &\to
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\begin{cases}
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\text{int\_lit} \\
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\text{ident} \\
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([\text{Expr}])
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\end{cases}
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\end{align}
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\end{document}
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