45 lines
997 B
C++
45 lines
997 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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extern const Grammar arithmetic = Grammar({
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{ "program", sym("_expression") },
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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", token(seq({
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pattern("[a-zA-Z\u03B1-\u03C9]"),
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repeat(choice({
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pattern("[a-zA-Z\u03B1-\u03C9]"),
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pattern("[0-9]") })) })) },
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{ "comment", pattern("#.*") },
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}).extra_tokens({
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sym("comment"),
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pattern("\\s"),
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});
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} // namespace tree_sitter_examples
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