eecbcccee0
Generated parsers no longer export a parser constructor function. They now export an opaque Language object which can be set on Documents directly. This way, the logic for constructing parsers lives entirely in the runtime. The Languages are just structs which have no load-time dependency on the runtime
87 lines
2.7 KiB
C++
87 lines
2.7 KiB
C++
#include "runtime/runtime_spec_helper.h"
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#include "runtime/helpers/spy_reader.h"
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#include "runtime/tree.h"
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extern "C" const TSLanguage * ts_language_json;
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START_TEST
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describe("incremental parsing", [&]() {
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TSDocument *doc;
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before_each([&]() {
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doc = ts_document_make();
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ts_document_set_language(doc, ts_language_json);
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});
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after_each([&]() {
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ts_document_free(doc);
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});
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describe("incremental parsing", [&]() {
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SpyReader *reader;
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before_each([&]() {
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reader = new SpyReader("{ \"key\": [1, 2] }", 5);
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ts_document_set_input(doc, reader->input);
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});
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after_each([&]() {
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delete reader;
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});
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it("parses the input", [&]() {
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AssertThat(string(ts_document_string(doc)), Equals(
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"(object (string) (array (number) (number)))"));
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});
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it("reads the entire input", [&]() {
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AssertThat(reader->strings_read, Equals(vector<string>({
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"{ \"key\": [1, 2] }"
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})));
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});
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describe("modifying the end of the input", [&]() {
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before_each([&]() {
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size_t position(string("{ \"key\": [1, 2]").length());
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string inserted_text(", \"key2\": 4");
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reader->content.insert(position, inserted_text);
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ts_document_edit(doc, { position, 0, inserted_text.length() });
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});
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it("updates the parse tree", [&]() {
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AssertThat(string(ts_document_string(doc)), Equals(
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"(object (string) (array (number) (number)) (string) (number))"));
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});
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it("re-reads only the changed portion of the input", [&]() {
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AssertThat(reader->strings_read.size(), Equals<size_t>(2));
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AssertThat(reader->strings_read[1], Equals(", \"key2\": 4 }"));
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});
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});
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describe("modifying the beginning of the input", [&]() {
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before_each([&]() {
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size_t position(string("{ ").length());
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string inserted_text("\"key2\": 4, ");
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reader->content.insert(position, inserted_text);
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ts_document_edit(doc, { position, 0, inserted_text.length() });
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});
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it("updates the parse tree", [&]() {
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AssertThat(string(ts_document_string(doc)), Equals(
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"(object (string) (number) (string) (array (number) (number)))"));
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});
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it_skip("re-reads only the changed portion of the input", [&]() {
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AssertThat(reader->strings_read.size(), Equals<size_t>(2));
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AssertThat(reader->strings_read[1], Equals("\"key2\": 4, "));
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});
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});
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});
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});
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END_TEST
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