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Makes parser to check expression's staticity.

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This commit is contained in:
falsycat 2020-12-25 00:00:00 +00:00
parent 4b0dada5c2
commit c9ec7332d9
3 changed files with 41 additions and 27 deletions
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5
TODO.TXT
View File

@ -3,9 +3,10 @@ X error handling (compiler message)
X user-defined type resolving
X make enum for generic types
X constant resolving in expression
check if an expression is static/dynamic
X check if an expression is static/dynamic
enum support
union support
constant support
conditional switching support
union support
transpiler for C
release 1.0.0

56
biner.y
View File

@ -52,6 +52,13 @@ unwrap_struct_member_ref_(
biner_zone_ptr(biner_tree_struct_member_reference_t) memref
);
static inline biner_zone_ptr(biner_tree_expr_t)
create_operator_(
biner_zone_ptr(biner_tree_expr_t) l,
biner_tree_expr_type_t type,
biner_zone_ptr(biner_tree_expr_t) r
);
static biner_zone_ptr(biner_tree_expr_t)
resolve_constant_(
biner_zone_ptr(char) ident
@ -141,8 +148,12 @@ array_struct_member_type
$$ = $1;
biner_tree_struct_member_type_t* t =
ref(biner_tree_struct_member_type_t, $$);
t->qualifier = BINER_TREE_STRUCT_MEMBER_TYPE_QUALIFIER_DYNAMIC_ARRAY;
t->expr = $3;
const biner_tree_expr_t* expr = ref(biner_tree_expr_t, $3);
t->qualifier = expr->dynamic?
BINER_TREE_STRUCT_MEMBER_TYPE_QUALIFIER_DYNAMIC_ARRAY:
BINER_TREE_STRUCT_MEMBER_TYPE_QUALIFIER_STATIC_ARRAY;
}
;
@ -175,36 +186,20 @@ expr
add_expr
: mul_expr
| add_expr '+' mul_expr {
$$ = alloc_(biner_tree_expr_t);
*ref(biner_tree_expr_t, $$) = (biner_tree_expr_t) {
.type = BINER_TREE_EXPR_TYPE_OPERATOR_ADD,
.operands = {$1, $3},
};
$$ = create_operator_($1, BINER_TREE_EXPR_TYPE_OPERATOR_ADD, $3);
}
| add_expr '-' mul_expr {
$$ = alloc_(biner_tree_expr_t);
*ref(biner_tree_expr_t, $$) = (biner_tree_expr_t) {
.type = BINER_TREE_EXPR_TYPE_OPERATOR_SUB,
.operands = {$1, $3},
};
$$ = create_operator_($1, BINER_TREE_EXPR_TYPE_OPERATOR_SUB, $3);
}
;
mul_expr
: operand
| mul_expr '*' operand {
$$ = alloc_(biner_tree_expr_t);
*ref(biner_tree_expr_t, $$) = (biner_tree_expr_t) {
.type = BINER_TREE_EXPR_TYPE_OPERATOR_MUL,
.operands = {$1, $3},
};
$$ = create_operator_($1, BINER_TREE_EXPR_TYPE_OPERATOR_MUL, $3);
}
| mul_expr '/' operand {
$$ = alloc_(biner_tree_expr_t);
*ref(biner_tree_expr_t, $$) = (biner_tree_expr_t) {
.type = BINER_TREE_EXPR_TYPE_OPERATOR_DIV,
.operands = {$1, $3},
};
$$ = create_operator_($1, BINER_TREE_EXPR_TYPE_OPERATOR_DIV, $3);
}
;
@ -228,6 +223,7 @@ operand
$$ = alloc_(biner_tree_expr_t);
*ref(biner_tree_expr_t, $$) = (biner_tree_expr_t) {
.type = BINER_TREE_EXPR_TYPE_OPERAND_REFERENCE,
.dynamic = true,
.r = mref,
};
} else {
@ -332,9 +328,25 @@ unwrap_struct_member_ref_(
return r->member;
}
static inline biner_zone_ptr(biner_tree_expr_t) create_operator_(
biner_zone_ptr(biner_tree_expr_t) l,
biner_tree_expr_type_t type,
biner_zone_ptr(biner_tree_expr_t) r) {
const biner_tree_expr_t* lexpr = ref(biner_tree_expr_t, l);
const biner_tree_expr_t* rexpr = ref(biner_tree_expr_t, r);
biner_zone_ptr(biner_tree_expr_t) expr = alloc_(biner_tree_expr_t);
*ref(biner_tree_expr_t, expr) = (biner_tree_expr_t) {
.type = type,
.dynamic = lexpr->dynamic || rexpr->dynamic,
.operands = {l, r},
};
return expr;
}
static inline biner_zone_ptr(biner_tree_expr_t) resolve_constant_(
biner_zone_ptr(char) ident) {
(void) ident;
/* TODO: check out enums and constants */
/* TODO: find out enums and constants */
return 0;
}

1
tree.h
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@ -27,6 +27,7 @@ typedef enum biner_tree_expr_type_t {
typedef struct biner_tree_expr_t {
biner_tree_expr_type_t type;
bool dynamic;
union {
int64_t i;
biner_zone_ptr(biner_tree_struct_member_reference_t) r;