42 lines
1 KiB
C++
42 lines
1 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(int precedence, std::string op) {
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return prec(precedence, seq({
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sym("expression"),
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str(op),
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sym("expression") }));
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}
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rule_ptr prefix(int precedence, std::string op) {
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return prec(precedence, seq({
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str(op),
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sym("expression") }));
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}
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}
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