139 lines
4 KiB
C++
139 lines
4 KiB
C++
#include "integration/integration_spec_helper.h"
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#include "integration/helpers/load_language.h"
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START_TEST
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describe("compile_grammar", []() {
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TSDocument *document;
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before_each([&]() {
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document = ts_document_make();
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});
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after_each([&]() {
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ts_document_free(document);
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});
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describe("when the grammar's start symbol is a token", [&]() {
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it("parses the token", [&]() {
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TSCompileResult result = ts_compile_grammar(R"JSON(
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{
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"name": "test_language",
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"rules": {
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"first_rule": {"type": "STRING", "value": "the-value"}
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}
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}
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)JSON");
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const TSLanguage *language = load_language("test_language", result);
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ts_document_set_language(document, language);
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ts_document_set_input_string(document, "the-value");
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ts_document_parse(document);
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TSNode root_node = ts_document_root_node(document);
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AssertThat(ts_node_string(root_node, document), Equals("(first_rule)"));
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});
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});
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describe("when the grammar's start symbol is blank", [&]() {
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it("parses the empty string", [&]() {
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TSCompileResult result = ts_compile_grammar(R"JSON(
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{
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"name": "test_language",
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"rules": {
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"first_rule": {"type": "BLANK"}
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}
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}
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)JSON");
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const TSLanguage *language = load_language("test_language", result);
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ts_document_set_language(document, language);
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ts_document_set_input_string(document, "");
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ts_document_parse(document);
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TSNode root_node = ts_document_root_node(document);
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AssertThat(ts_node_string(root_node, document), Equals("(first_rule)"));
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});
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});
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describe("the grammar in the README", [&]() {
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it("works", [&]() {
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TSCompileResult result = ts_compile_grammar(R"JSON(
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{
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"name": "arithmetic",
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"extras": [
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{"type": "PATTERN", "value": "\\s"}
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],
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"rules": {
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"expression": {
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"type": "CHOICE",
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"members": [
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{"type": "SYMBOL", "name": "sum"},
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{"type": "SYMBOL", "name": "product"},
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{"type": "SYMBOL", "name": "number"},
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{"type": "SYMBOL", "name": "variable"},
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{
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"type": "SEQ",
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"members": [
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{"type": "STRING", "value": "("},
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{"type": "SYMBOL", "name": "expression"},
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{"type": "STRING", "value": ")"}
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]
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}
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]
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},
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"sum": {
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"type": "PREC_LEFT",
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"value": 1,
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"content": {
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"type": "SEQ",
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"members": [
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{"type": "SYMBOL", "name": "expression"},
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{"type": "STRING", "value": "+"},
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{"type": "SYMBOL", "name": "expression"}
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]
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}
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},
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"product": {
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"type": "PREC_LEFT",
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"value": 2,
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"content": {
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"type": "SEQ",
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"members": [
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{"type": "SYMBOL", "name": "expression"},
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{"type": "STRING", "value": "*"},
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{"type": "SYMBOL", "name": "expression"}
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]
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}
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},
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"number": {"type": "PATTERN", "value": "\\d+"},
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"variable": {"type": "PATTERN", "value": "[a-zA-Z]\\w*"}
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}
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}
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)JSON");
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const TSLanguage *language = load_language("arithmetic", result);
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ts_document_set_language(document, language);
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ts_document_set_input_string(document, "a + b * c");
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ts_document_parse(document);
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TSNode root_node = ts_document_root_node(document);
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AssertThat(ts_node_string(root_node, document), Equals(
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"(expression (sum "
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"(expression (variable)) "
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"(expression (product "
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"(expression (variable)) "
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"(expression (variable))))))"));
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});
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});
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});
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END_TEST
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