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authorLeo Tenenbaum <pommicket@gmail.com>2019-08-21 11:16:30 -0400
committerLeo Tenenbaum <pommicket@gmail.com>2019-08-21 11:16:30 -0400
commit1c214758924bbfcd0cbafb6a4240210f057de007 (patch)
tree683420d7acd06485807c5872459521c51ab10ac5
parentfcc247dbe0d442a3ad24ecda843ae9dcc8d56b77 (diff)
fixed multiple parameters; cleaned up function exprs
-rw-r--r--parse.c57
-rw-r--r--test.toc8
2 files changed, 40 insertions, 25 deletions
diff --git a/parse.c b/parse.c
index 274c0b8..9fb6dfd 100644
--- a/parse.c
+++ b/parse.c
@@ -426,24 +426,10 @@ static bool expr_parse(Expression *e, Parser *p, Token *end) {
t->token = end;
return true;
}
- if (token_is_kw(t->token, KW_FN)) {
- /* this is a function */
- e->kind = EXPR_FN;
- if (!fn_expr_parse(&e->fn, p)) {
- t->token = end + 1; /* move token past end for further parsing */
- return false;
- }
- if (t->token != end) {
- tokr_err(t, "Direct function calling in an expression is not supported yet.\nYou can wrap the function in parentheses.");
- /* TODO */
- t->token = end + 1;
- return false;
- }
- return true;
- }
- /* Find the lowest-precedence operator not in parentheses */
+ /* Find the lowest-precedence operator not in parentheses/braces */
int paren_level = 0;
+ int brace_level = 0;
int lowest_precedence = NOT_AN_OP;
/* e.g. (5+3) */
bool entirely_within_parentheses = token_is_kw(t->token, KW_LPAREN);
@@ -461,11 +447,24 @@ static bool expr_parse(Expression *e, Parser *p, Token *end) {
if (paren_level < 0) {
t->token = token;
tokr_err(t, "Excessive closing parenthesis.");
+ t->token = end + 1;
+ return false;
+ }
+ break;
+ case KW_LBRACE:
+ brace_level++;
+ break;
+ case KW_RBRACE:
+ brace_level--;
+ if (brace_level < 0) {
+ t->token = token;
+ tokr_err(t, "Excessive closing brace.");
+ t->token = end + 1;
return false;
}
break;
default: { /* OPTIM: use individual cases for each op */
- if (paren_level == 0) {
+ if (paren_level == 0 && brace_level == 0) {
int precedence = op_precedence(token->kw);
if (precedence == NOT_AN_OP) break; /* nvm it's not an operator */
if (lowest_precedence == NOT_AN_OP || precedence <= lowest_precedence) {
@@ -486,8 +485,8 @@ static bool expr_parse(Expression *e, Parser *p, Token *end) {
t->token = end + 1;
return false;
}
- if (paren_level < 0) {
- tokr_err(t, "Too many closing parentheses.");
+ if (brace_level > 0) {
+ tokr_err(t, "Too many opening braces.");
t->token = end + 1;
return false;
}
@@ -502,8 +501,25 @@ static bool expr_parse(Expression *e, Parser *p, Token *end) {
t->token++; /* move past closing ) */
return true;
}
+
if (lowest_precedence == NOT_AN_OP) {
- /* function calls, array accesses, etc. */
+ /* functions, function calls, array accesses, etc. */
+ if (token_is_kw(t->token, KW_FN)) {
+ /* this is a function */
+ e->kind = EXPR_FN;
+ if (!fn_expr_parse(&e->fn, p)) {
+ t->token = end + 1; /* move token past end for further parsing */
+ return false;
+ }
+ if (t->token != end) {
+ tokr_err(t, "Direct function calling in an expression is not supported yet.\nYou can wrap the function in parentheses.");
+ /* TODO */
+ t->token = end + 1;
+ return false;
+ }
+ return true;
+ }
+
/* try a function call */
Token *token = t->token;
/*
@@ -551,6 +567,7 @@ static bool expr_parse(Expression *e, Parser *p, Token *end) {
}
if (token_is_kw(t->token, KW_RPAREN))
break;
+ t->token++; /* move past , */
}
}
t->token++; /* move past ) */
diff --git a/test.toc b/test.toc
index d53960d..1171218 100644
--- a/test.toc
+++ b/test.toc
@@ -1,5 +1,3 @@
-main :- fn(){
- 1+fn(x: int, y: float) int {
- printf("Hello!\n");
- };
-};
+main :- (fn(){
+ f(1,2+3---4-3-34-+a+-234-234);
+})(1,2,3,4,5--23423-2342);