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Insert variables at $ before code is run

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This commit is contained in:
Maxwell Jeffress 2025-01-05 14:25:16 +11:00
parent d8e433ba4a
commit f5c3204241
1 changed files with 61 additions and 12 deletions
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73
src/main.cpp
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@ -86,6 +86,63 @@ private:
if (isVerbose) cout << "\u001b[36m Info: " << str << "\u001b[39m" << endl;
}
string interpolateVariables(const string& input) {
string result;
size_t pos = 0;
bool inString = false;
while (pos < input.length()) {
if (input[pos] == '"') {
inString = !inString;
result += input[pos];
pos++;
} else if (pos + 1 < input.length() && input[pos] == '$' && input[pos + 1] == '{') {
size_t end = input.find('}', pos);
if (end != string::npos) {
string varName = input.substr(pos + 2, end - (pos + 2));
auto it = variables.find(varName);
if (it != variables.end()) {
result += it->second.toString();
} else {
error("Variable " + varName + " not found");
result += "${" + varName + "}";
}
pos = end + 1;
} else {
result += input[pos];
pos++;
}
} else {
result += input[pos];
pos++;
}
}
return result;
}
vector<pair<string, string>> preProcessTokens(const vector<pair<string, string>>& tokens) {
vector<pair<string, string>> processed;
for (const auto& [token, type] : tokens) {
if (type == "str") {
string processedStr = interpolateVariables(token);
processed.push_back({processedStr, "str"});
} else if (token[0] == '$' && token.length() > 1) {
string varName = token.substr(1);
auto it = variables.find(varName);
if (it != variables.end()) {
processed.push_back({it->second.toString(), getTokenType(it->second.toString())});
} else {
error("Variable " + varName + " not found");
processed.push_back({token, "unknown"});
}
} else {
processed.push_back({token, type});
}
}
return processed;
}
vector<pair<string, string>> tokenize(const string& input) {
vector<pair<string, string>> tokens;
string currentToken;
@ -190,8 +247,10 @@ private:
public:
auto executeCommand(const string& input) {
string processedInput = interpolateVariables(input);
auto tokens = tokenize(input);
if (tokens.empty()) return 0;
tokens = preProcessTokens(tokens);
if (tokens[0].first == "log") {
verbose("Log command run");
@ -200,22 +259,12 @@ public:
error("log requires an argument");
return 0;
}
const auto& [token, type] = tokens[1];
if (type == "str" || type == "int" || type == "dec") {
cout << token << endl;
}
else if (type == "variable") {
auto it = variables.find(token);
if (it != variables.end()) {
cout << it->second.toString() << endl;
}
}
else if (type == "function") {
error("for now, functions cannot be logged");
}
else if (type == "unknown") {
error("that type is unknown");
else {
error("that type cannot be logged");
}
return 0;
}