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[Feat] 支持运算符重载！详见文档或 Library/lang/lang.fig中的定义。通过 impl Operation for xxx实现重载

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[Impl] 函数参数指定现在也接受一个 exp，逐渐改动其他中...
This commit is contained in:
PuqiAR
2026-02-02 16:11:08 +08:00
parent 41bff72d44
commit 01c16dee3f
20 changed files with 698 additions and 355 deletions
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19
src/Parser/parser.cpp
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@@ -1,3 +1,4 @@
#include "Ast/Expressions/VarExpr.hpp"
#include <Ast/Statements/ErrorFlow.hpp>
#include <Ast/Statements/ImplementSt.hpp>
#include <Ast/astBase.hpp>
@@ -184,7 +185,7 @@ namespace Fig
if (isThis(TokenType::Assign)) // =
{
next();
dp.push_back({pname, {ValueType::Any.name, parseExpression(0, TokenType::Comma)}});
dp.push_back({pname, {makeAst<Ast::VarExprAst>(u8"Any"), parseExpression(0, TokenType::Comma)}});
if (isThis(TokenType::Comma))
{
next(); // only skip `,` when it's there
@@ -193,13 +194,11 @@ namespace Fig
else if (isThis(TokenType::Colon)) // :
{
next(); // skip `:`
expect(TokenType::Identifier, FString(u8"Type name"));
FString ti(currentToken().getValue());
next(); // skip type name
Ast::Expression type_exp = parseExpression(0, TokenType::Comma, TokenType::RightParen, TokenType::Assign);
if (isThis(TokenType::Assign)) // =
{
next(); // skip `=`
dp.push_back({pname, {ti, parseExpression(0, TokenType::Comma)}});
dp.push_back({pname, {type_exp, parseExpression(0, TokenType::Comma)}});
if (isThis(TokenType::Comma))
{
next(); // only skip `,` when it's there
@@ -207,7 +206,7 @@ namespace Fig
}
else
{
pp.push_back({pname, ti});
pp.push_back({pname, type_exp});
if (isThis(TokenType::Comma))
{
next(); // only skip `,` when it's there
@@ -228,7 +227,7 @@ namespace Fig
}
else
{
pp.push_back({pname, ValueType::Any.name});
pp.push_back({pname, makeAst<Ast::VarExprAst>(u8"Any")});
if (isThis(TokenType::Comma))
{
next(); // only skip `,` when it's there
@@ -1020,14 +1019,14 @@ namespace Fig
return makeAst<Ast::ImportSt>(path);
}
Ast::Expression Parser::parseExpression(Precedence bp, TokenType stop, TokenType stop2)
Ast::Expression Parser::parseExpression(Precedence bp, TokenType stop, TokenType stop2, TokenType stop3)
{
Ast::Expression lhs;
Ast::Operator op;
Token tok = currentToken();
if (tok == EOFTok) throwAddressableError<SyntaxError>(FString(u8"Unexpected end of expression"));
if (tok.getType() == stop || tok.getType() == stop2)
if (tok.getType() == stop || tok.getType() == stop2 || tok.getType() == stop3)
{
if (lhs == nullptr) throwAddressableError<SyntaxError>(FString(u8"Expected expression"));
return lhs;
@@ -1089,7 +1088,7 @@ namespace Fig
while (true)
{
tok = currentToken();
if (tok.getType() == stop || tok.getType() == stop2 || tok == EOFTok) break;
if (tok.getType() == stop || tok.getType() == stop2 || tok.getType() == stop3 || tok == EOFTok) break;
/* Postfix */