73 lines
2.4 KiB
C++
73 lines
2.4 KiB
C++
#include "syntax_highlighting.hpp"
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#include "coders/commons.hpp"
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#include "coders/lua_parsing.hpp"
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#include "graphics/core/Font.hpp"
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using namespace devtools;
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static std::unique_ptr<FontStylesScheme> build_styles(
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const std::vector<lua::Token>& tokens
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) {
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FontStylesScheme styles {
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{
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{false, false, glm::vec4(0.8f, 0.8f, 0.8f, 1)}, // default
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{true, false, glm::vec4(0.9, 0.6f, 0.4f, 1)}, // keyword
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{false, false, glm::vec4(0.4, 0.8f, 0.5f, 1)}, // string
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{false, false, glm::vec4(0.3, 0.3f, 0.3f, 1)}, // comment
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{false, false, glm::vec4(0.4, 0.45f, 0.5f, 1)}, // self
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{true, false, glm::vec4(1.0f, 0.2f, 0.1f, 1)}, // unexpected
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},
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{}
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};
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size_t offset = 0;
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for (int i = 0; i < tokens.size(); i++) {
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const auto& token = tokens.at(i);
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if (token.tag != lua::TokenTag::KEYWORD &&
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token.tag != lua::TokenTag::STRING &&
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token.tag != lua::TokenTag::INTEGER &&
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token.tag != lua::TokenTag::NUMBER &&
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token.tag != lua::TokenTag::COMMENT &&
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token.tag != lua::TokenTag::UNEXPECTED) {
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continue;
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}
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if (token.start.pos > offset) {
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int n = token.start.pos - offset;
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styles.map.insert(styles.map.end(), token.start.pos - offset, 0);
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}
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offset = token.end.pos;
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int styleIndex;
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switch (token.tag) {
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case lua::TokenTag::KEYWORD: styleIndex = 1; break;
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case lua::TokenTag::STRING:
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case lua::TokenTag::INTEGER:
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case lua::TokenTag::NUMBER: styleIndex = 2; break;
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case lua::TokenTag::COMMENT: styleIndex = 3; break;
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case lua::TokenTag::UNEXPECTED: styleIndex = 5; break;
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default:
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styleIndex = 0;
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break;
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}
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styles.map.insert(
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styles.map.end(), token.end.pos - token.start.pos, styleIndex
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);
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}
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styles.map.push_back(0);
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return std::make_unique<FontStylesScheme>(std::move(styles));
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}
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std::unique_ptr<FontStylesScheme> devtools::syntax_highlight(
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const std::string& lang, std::string_view source
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) {
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try {
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if (lang == "lua") {
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auto tokens = lua::tokenize("<string>", source);
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return build_styles(tokens);
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} else {
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return nullptr;
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}
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} catch (const parsing_error& err) {
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return nullptr;
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}
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}
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