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Implements parsing of function calling

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Deukhoofd
2019-06-01 14:56:28 +02:00
parent 1231a77761
commit 8b70eed516
5 changed files with 59 additions and 10 deletions
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26
src/Parser/Parser.cpp
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@@ -1,5 +1,6 @@
#include "Parser.hpp"
#include "ParsedStatements/ParsedStatement.hpp"
#include "UnaryOperatorKind.hpp"
#include "BinaryOperatorKind.hpp"
#include "TypedVariableIdentifier.hpp"
@@ -137,7 +138,8 @@ ParsedStatement *Parser::ParseFunctionDeclaration(IToken *current) {
ParsedExpression* Parser::ParseExpression(IToken* current){
auto expression = this -> ParseBinaryExpression(current, OperatorPrecedence::No);
if (this -> Peek() -> GetKind() == TokenKind::OpenParenthesis){
while (this -> Peek() -> GetKind() == TokenKind::OpenParenthesis){
expression = this->ParseFunctionCallExpression(expression);
//TODO: Function Evaluation
}
return expression;
@@ -250,6 +252,28 @@ ParsedExpression *Parser::ParseParenthesizedExpression(IToken *current) {
return new ParenthesizedExpression(expression, start, closeToken->GetEndPosition() - start);
}
ParsedExpression *Parser::ParseFunctionCallExpression(ParsedExpression* functionExpression) {
this -> Next(); // consume the open parenthesis
vector<ParsedExpression*> parameters;
auto peeked = this -> Peek();
auto peekedKind = peeked->GetKind();
while (peekedKind != TokenKind::CloseParenthesis){
if (peekedKind == TokenKind ::EndOfFile){
this->ScriptData->Diagnostics->LogError(DiagnosticCode::UnexpectedToken, peeked->GetStartPosition(), peeked->GetLength());
return new BadExpression(peeked->GetStartPosition(), peeked->GetLength());
}
parameters.push_back(this->ParseExpression(this->Next()));
peeked = this -> Next() ;
peekedKind = peeked->GetKind();
if (peekedKind != TokenKind::CloseParenthesis && peekedKind != TokenKind::CommaToken){
this->ScriptData->Diagnostics->LogError(DiagnosticCode::UnexpectedToken, peeked->GetStartPosition(), peeked->GetLength());
return new BadExpression(peeked->GetStartPosition(), peeked->GetLength());
}
}
auto start = functionExpression->GetStartPosition();
return new FunctionCallExpression(functionExpression, parameters, start, peeked->GetEndPosition() - start);
}