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`.
59 lines
1.4 KiB
C++
59 lines
1.4 KiB
C++
#include "tree_sitter/compiler.h"
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namespace tree_sitter_examples {
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using namespace tree_sitter::rules;
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rule_ptr comma_sep1(rule_ptr element) {
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return seq({ element, repeat(seq({ str(","), element })) });
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}
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rule_ptr comma_sep(rule_ptr element) {
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return choice({ comma_sep1(element), blank() });
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}
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rule_ptr optional(rule_ptr rule) {
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return choice({ rule, blank() });
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}
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rule_ptr in_parens(rule_ptr rule) {
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return seq({ str("("), rule, str(")") });
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}
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rule_ptr in_braces(rule_ptr rule) {
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return seq({ str("{"), rule, str("}") });
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}
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rule_ptr in_brackets(rule_ptr rule) {
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return seq({ str("["), rule, str("]") });
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}
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rule_ptr infix_op(std::string op, std::string rule_name, int precedence) {
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return prec(precedence, seq({
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sym(rule_name),
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keyword(op),
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sym(rule_name) }));
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}
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rule_ptr prefix_op(std::string op, std::string rule_name, int precedence) {
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return prec(precedence, seq({
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keyword(op),
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sym(rule_name) }));
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}
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rule_ptr postfix_op(std::string op, std::string rule_name, int precedence) {
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return prec(precedence, seq({
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sym(rule_name),
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keyword(op) }));
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}
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rule_ptr delimited(std::string delimiter) {
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return token(seq({
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str(delimiter),
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repeat(choice({
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pattern("[^" + delimiter + "]"),
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seq({ str("\\"), str(delimiter) }) })),
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str(delimiter) }));
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}
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} // namespace tree_sitter_examples
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