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Read argument names of function-like #defines

This commit is contained in:
Andrius Štikonas 2021-11-18 18:01:23 +00:00
parent 5e54a3d312
commit 2ee908ec82
1 changed files with 36 additions and 0 deletions
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36
cc_macro.c
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@ -22,6 +22,7 @@ void require(int bool, char* error);
int strtoint(char* a);
void line_error_token(struct token_list* list);
struct token_list* eat_token(struct token_list* head);
struct token_list* reverse_list(struct token_list* head);
struct conditional_inclusion
{
@ -35,6 +36,7 @@ struct macro_list
struct macro_list* next;
char* symbol;
struct token_list* expansion;
struct token_list* arguments;
};
struct macro_list* macro_env;
@ -423,6 +425,7 @@ int macro_expression()
void handle_define()
{
struct macro_list* hold;
struct token_list* arg;
struct token_list* expansion_end = NULL;
/* don't use #define statements from non-included blocks */
@ -450,6 +453,39 @@ void handle_define()
/* discard the macro name */
eat_current_token();
/* Handle macro arguments */
if(macro_token->s[0] == '(')
{
/* discard ( */
eat_current_token();
require(NULL != macro_token, "got an EOF terminated #define\n");
if(macro_token->s[0] != ')')
{
arg = calloc(1, sizeof(struct token_list));
arg->s = macro_token->s;
hold->arguments = arg;
eat_current_token();
require(NULL != macro_token, "incomplete macro call\n");
while(macro_token->s[0] == ',')
{
eat_current_token();
require(NULL != macro_token, "incomplete macro call, got an EOF instead of an argument\n");
arg = calloc(1, sizeof(struct token_list));
arg->s = macro_token->s;
arg->next = hold->arguments;
hold->arguments = arg;
eat_current_token();
require(NULL != macro_token, "incomplete macro call\n");
}
}
eat_current_token();
/* Reverse argument list */
hold->arguments = reverse_list(hold->arguments);
require(NULL != macro_token, "got an EOF terminated #define\n");
}
while (TRUE)
{
require(NULL != macro_token, "got an EOF terminated #define\n");