179 lines
6.2 KiB
C++
179 lines
6.2 KiB
C++
#include "tree_sitter/compiler.h"
|
|
#include "helpers.h"
|
|
|
|
namespace tree_sitter_examples {
|
|
using tree_sitter::Grammar;
|
|
using namespace tree_sitter::rules;
|
|
|
|
extern const Grammar javascript({
|
|
{ "program", repeat(sym("statement")) },
|
|
|
|
// Statements
|
|
{ "statement", choice({
|
|
sym("comment"),
|
|
sym("statement_block"),
|
|
sym("if_statement"),
|
|
sym("switch_statement"),
|
|
sym("for_statement"),
|
|
sym("break_statement"),
|
|
sym("var_declaration"),
|
|
sym("return_statement"),
|
|
sym("delete_statement"),
|
|
sym("expression_statement") }) },
|
|
{ "statement_block", in_braces(err(repeat(sym("statement")))) },
|
|
{ "for_statement", seq({
|
|
keyword("for"),
|
|
in_parens(seq({
|
|
choice({
|
|
sym("var_declaration"),
|
|
sym("expression_statement") }),
|
|
sym("expression_statement"),
|
|
err(sym("expression")) })),
|
|
sym("statement") }) },
|
|
{ "if_statement", seq({
|
|
keyword("if"),
|
|
in_parens(err(sym("expression"))),
|
|
sym("statement"),
|
|
optional(prec(1, seq({
|
|
keyword("else"),
|
|
sym("statement") }))) }) },
|
|
{ "switch_statement", seq({
|
|
keyword("switch"),
|
|
in_parens(err(sym("expression"))),
|
|
in_braces(repeat(sym("switch_case"))) }) },
|
|
{ "switch_case", seq({
|
|
choice({
|
|
seq({
|
|
keyword("case"),
|
|
sym("expression") }),
|
|
keyword("default") }),
|
|
str(":"),
|
|
repeat(sym("statement")) }) },
|
|
{ "break_statement", seq({
|
|
keyword("break"),
|
|
sym("_terminator") }) },
|
|
{ "var_declaration", seq({
|
|
keyword("var"),
|
|
comma_sep(seq({
|
|
optional(sym("comment")),
|
|
choice({
|
|
sym("assignment"),
|
|
sym("identifier") }) })),
|
|
sym("_terminator") }) },
|
|
{ "expression_statement", seq({
|
|
err(sym("expression")),
|
|
sym("_terminator") }) },
|
|
{ "return_statement", seq({
|
|
keyword("return"),
|
|
optional(sym("expression")),
|
|
sym("_terminator") }) },
|
|
{ "delete_statement", seq({
|
|
keyword("delete"),
|
|
sym("property_access"),
|
|
sym("_terminator") }) },
|
|
|
|
// Expressions
|
|
{ "expression", choice({
|
|
sym("function_expression"),
|
|
sym("function_call"),
|
|
sym("constructor_call"),
|
|
sym("property_access"),
|
|
sym("assignment"),
|
|
sym("ternary"),
|
|
sym("math_op"),
|
|
sym("bool_op"),
|
|
sym("object"),
|
|
sym("array"),
|
|
sym("regex"),
|
|
sym("string"),
|
|
sym("number"),
|
|
sym("true"),
|
|
sym("false"),
|
|
sym("null"),
|
|
sym("identifier"),
|
|
in_parens(sym("expression")) }) },
|
|
{ "math_op", choice({
|
|
prefix_op("++", "expression", 3),
|
|
prefix_op("--", "expression", 3),
|
|
postfix_op("++", "expression", 3),
|
|
postfix_op("--", "expression", 3),
|
|
prefix_op("+", "expression", 3),
|
|
prefix_op("-", "expression", 3),
|
|
infix_op("*", "expression", 2),
|
|
infix_op("/", "expression", 2),
|
|
infix_op("&", "expression", 2),
|
|
infix_op("|", "expression", 2),
|
|
infix_op("^", "expression", 2),
|
|
infix_op("+", "expression", 1),
|
|
infix_op("-", "expression", 1) }) },
|
|
{ "bool_op", choice({
|
|
infix_op("||", "expression", 1),
|
|
infix_op("&&", "expression", 2),
|
|
infix_op("===", "expression", 3),
|
|
infix_op("==", "expression", 3),
|
|
infix_op("!==", "expression", 3),
|
|
infix_op("!=", "expression", 3),
|
|
infix_op("<=", "expression", 3),
|
|
infix_op("<", "expression", 3),
|
|
infix_op(">=", "expression", 3),
|
|
infix_op(">", "expression", 3),
|
|
prefix_op("!", "expression", 4) }) },
|
|
{ "ternary", seq({
|
|
sym("expression"),
|
|
str("?"),
|
|
sym("expression"),
|
|
str(":"),
|
|
sym("expression") }) },
|
|
{ "assignment", prec(-1, seq({
|
|
choice({
|
|
sym("identifier"),
|
|
sym("property_access") }),
|
|
str("="),
|
|
sym("expression") })) },
|
|
{ "function_expression", seq({
|
|
keyword("function"),
|
|
optional(sym("identifier")),
|
|
sym("formal_parameters"),
|
|
sym("statement_block") }) },
|
|
{ "function_call", seq({
|
|
sym("expression"),
|
|
in_parens(comma_sep(err(sym("expression")))) }) },
|
|
{ "constructor_call", seq({
|
|
keyword("new"),
|
|
sym("function_call") }) },
|
|
{ "property_access", seq({
|
|
sym("expression"),
|
|
choice({
|
|
seq({
|
|
str("."),
|
|
sym("identifier") }),
|
|
in_brackets(sym("expression")) }) }) },
|
|
{ "formal_parameters", in_parens(comma_sep(sym("identifier"))) },
|
|
|
|
// Literals
|
|
{ "comment", token(choice({
|
|
seq({
|
|
str("/*"),
|
|
repeat(pattern("[^*]|(*[^/])")),
|
|
str("*/") }),
|
|
pattern("//[^\n]*") })) },
|
|
{ "object", in_braces(comma_sep(err(seq({
|
|
optional(sym("comment")),
|
|
choice({ sym("string"), sym("identifier") }),
|
|
str(":"),
|
|
sym("expression") })))) },
|
|
{ "array", in_brackets(comma_sep(err(seq({
|
|
optional(sym("comment")),
|
|
sym("expression") })))) },
|
|
{ "_terminator", pattern("[;\n]") },
|
|
{ "regex", token(delimited("/")) },
|
|
{ "string", token(choice({
|
|
delimited("\""),
|
|
delimited("'") })) },
|
|
{ "identifier", pattern("[\\a_$][\\w_$]*") },
|
|
{ "number", pattern("\\d+(\\.\\d+)?") },
|
|
{ "null", keyword("null") },
|
|
{ "true", keyword("true") },
|
|
{ "false", keyword("false") },
|
|
});
|
|
}
|