31 lines
828 B
C++
31 lines
828 B
C++
#include "tree_sitter/compiler.h"
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#include "helpers.h"
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namespace tree_sitter_examples {
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using tree_sitter::Grammar;
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using namespace tree_sitter::rules;
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extern const Grammar arithmetic({
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{ "expression", choice({
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sym("sum"),
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sym("difference"),
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sym("product"),
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sym("quotient"),
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sym("exponent"),
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sym("group"),
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sym("number"),
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sym("variable") }) },
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{ "sum", infix_op("+", "expression", 1) },
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{ "difference", infix_op("-", "expression", 1) },
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{ "product", infix_op("*", "expression", 2) },
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{ "quotient", infix_op("/", "expression", 2) },
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{ "exponent", infix_op("^", "expression", 3) },
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{ "group", in_parens(err(sym("expression"))) },
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{ "number", pattern("\\d+") },
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{ "variable", pattern("\\a[\\w_]*") },
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});
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} // namespace tree_sitter_examples
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