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implemented parse_expression

This commit is contained in:
Kyler Olsen 2025-06-19 20:48:30 -06:00
parent 256f9fe611
commit 0c9f97b41d
1 changed files with 55 additions and 15 deletions
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70
src/syntax.c
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@ -11,7 +11,6 @@
#include "sync/syntax.h"
typedef struct {
const char* filename;
TokenArray tokens;
size_t pos;
} Parser;
@ -106,7 +105,45 @@ static SyntaxResult syntax_error(const char* message, Token token) {
}};
}
static SyntaxResult parse_expression(Parser* parser) {
}
static SyntaxResult parse_statement(Parser* parser) {
Child* children = NULL;
if (
parser->tokens.tokens[parser->pos].type == TOKEN_EOF ||
parser->tokens.tokens[parser->pos].type == TOKEN_RBRACE
) return syntax_error("Expected statement", parser->tokens.tokens[parser->pos]);
SyntaxResult result = parse_expression(parser);
if (result.type == SYNC_ERROR) return result;
if (result.result.type == SYNC_ERROR) return result;
if (children == NULL) {
children = (Child*)malloc(sizeof(Child));
if (children == NULL)
return (SyntaxResult){SYNC_ERROR, .error = (GeneralError){"Failed to allocate memory.", 1}};
children->next = NULL;
children->node = result.result.result;
} else {
GeneralError error = add_child(children, result.result.result);
if (error.message != NULL) return (SyntaxResult){SYNC_ERROR, .error = error};
}
if (parser->tokens.tokens[parser->pos].type != TOKEN_SEMICOLON)
return syntax_error("Expected statement", parser->tokens.tokens[parser->pos]);
SyntaxNode node = {
.type = NODE_SEMICOLON,
.start = parser->tokens.tokens[parser->pos].start,
.length = parser->tokens.tokens[parser->pos].length,
.file_info = parser->tokens.tokens[parser->pos].file_info,
.children = (Children){0, NULL}
};
GeneralError error = add_child(children, result.result.result);
if (error.message != NULL) return (SyntaxResult){SYNC_ERROR, .error = error};
parser->pos++;
return syntax_result(NODE_STATEMENT, children);
}
static SyntaxResult parse_block(Parser* parser) {
@ -120,10 +157,14 @@ static SyntaxResult parse_block(Parser* parser) {
if (result.result.type == SYNC_ERROR) return result;
if (children == NULL) {
children = (Child*)malloc(sizeof(Child));
if (children == NULL) return (SyntaxResult){SYNC_ERROR, .error = (GeneralError){"Failed to allocate memory.", 1}};
if (children == NULL)
return (SyntaxResult){SYNC_ERROR, .error = (GeneralError){"Failed to allocate memory.", 1}};
children->next = NULL;
children->node = result.result.result;
} else add_child(children, result.result.result);
} else {
GeneralError error = add_child(children, result.result.result);
if (error.message != NULL) return (SyntaxResult){SYNC_ERROR, .error = error};
}
if (parser->tokens.tokens[parser->pos].type == TOKEN_EOF)
return syntax_error("Expected '}'", parser->tokens.tokens[parser->pos]);
}
@ -141,26 +182,25 @@ static SyntaxResult parse_block(Parser* parser) {
return syntax_result(NODE_BLOCK, children);
}
SyntaxResult syntactical_analysis(TokenArray tokens) {
Parser* parser = (Parser*)malloc(sizeof(Parser));
if (parser == NULL) return (SyntaxResult){SYNC_ERROR, .error = (GeneralError){"Failed to allocate memory.", 1}};
SyntaxResult syntactical_analysis(const char* filename, TokenArray tokens) {
Parser parser = { tokens, 0 };
Child* children = NULL;
while (parser->tokens.tokens[parser->pos].type != TOKEN_EOF) {
SyntaxResult result = parse_block(parser);
if (result.type == SYNC_ERROR) { free(parser); return result; }
if (result.result.type == SYNC_ERROR) { free(parser); return result; }
while (parser.tokens.tokens[parser.pos].type != TOKEN_EOF) {
SyntaxResult result = parse_block(&parser);
if (result.type == SYNC_ERROR) return result;
if (result.result.type == SYNC_ERROR) return result;
if (children == NULL) {
children = (Child*)malloc(sizeof(Child));
if (children == NULL) {
free(parser);
if (children == NULL)
return (SyntaxResult){SYNC_ERROR, .error = (GeneralError){"Failed to allocate memory.", 1}};
}
children->next = NULL;
children->node = result.result.result;
} else add_child(children, result.result.result);
} else {
GeneralError error = add_child(children, result.result.result);
if (error.message != NULL) return (SyntaxResult){SYNC_ERROR, .error = error};
}
}
free(parser);
return syntax_result(NODE_FILE, children);
}