9682ef6c79
- I want to move away from having complete grammars for real languages (e.g. javascript, golang) in this repo. These languages take a long time to compile, and they now exist in their own repos (node-tree-sitter-javascript etc). - I want to start testing more compiler edge cases through integration tests, so I want to put more small, weird grammars in here. That makes me not want to call the directory `examples`.
36 lines
937 B
C++
36 lines
937 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 = Grammar({
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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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{ "comment", pattern("#.*") },
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}).ubiquitous_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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