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Added a nice error message

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This commit is contained in:
Kayne Ruse
2024-11-02 14:39:59 +11:00
parent ef72415c21
commit 92955d56dd
2 changed files with 13 additions and 6 deletions
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6
source/toy_lexer.h
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@@ -21,8 +21,8 @@ typedef struct {
TOY_API void Toy_bindLexer(Toy_Lexer* lexer, const char* source); TOY_API void Toy_bindLexer(Toy_Lexer* lexer, const char* source);
TOY_API Toy_Token Toy_private_scanLexer(Toy_Lexer* lexer); TOY_API Toy_Token Toy_private_scanLexer(Toy_Lexer* lexer);
TOY_API void Toy_private_printToken(Toy_Token* token); //debugging
//util TOY_API const char* Toy_private_findKeywordByType(const Toy_TokenType type);
#define TOY_BLANK_TOKEN() ((Toy_Token){TOY_TOKEN_NULL, 0, 0, NULL}) TOY_API Toy_TokenType Toy_private_findTypeByKeyword(const char* keyword);
TOY_API void Toy_private_printToken(Toy_Token* token);

11
source/toy_parser.c
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@@ -570,7 +570,14 @@ static void parsePrecedence(Toy_Bucket** bucketHandle, Toy_Parser* parser, Toy_A
ParsingRule prefix = getParsingRule(parser->previous.type)->prefix; ParsingRule prefix = getParsingRule(parser->previous.type)->prefix;
if (prefix == NULL) { if (prefix == NULL) {
//make a nice error message
if (Toy_private_findKeywordByType(parser->previous.type)) {
printError(parser, parser->previous, "Found reserved keyword instead");
}
else {
printError(parser, parser->previous, "Expected expression"); printError(parser, parser->previous, "Expected expression");
}
Toy_private_emitAstError(bucketHandle, rootHandle); Toy_private_emitAstError(bucketHandle, rootHandle);
return; return;
} }
@@ -780,8 +787,8 @@ Toy_Ast* Toy_scanParser(Toy_Bucket** bucketHandle, Toy_Parser* parser) {
void Toy_resetParser(Toy_Parser* parser) { void Toy_resetParser(Toy_Parser* parser) {
parser->lexer = NULL; parser->lexer = NULL;
parser->current = TOY_BLANK_TOKEN(); parser->current = ((Toy_Token){TOY_TOKEN_NULL, 0, 0, NULL});
parser->previous = TOY_BLANK_TOKEN(); parser->previous = ((Toy_Token){TOY_TOKEN_NULL, 0, 0, NULL});
parser->error = false; parser->error = false;
parser->panic = false; parser->panic = false;