mirror of https://github.com/rui314/chibicc
59 lines
1.0 KiB
C
59 lines
1.0 KiB
C
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#include "chibicc.h"
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Type *ty_int = &(Type){TY_INT};
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bool is_integer(Type *ty) {
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return ty->kind == TY_INT;
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}
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Type *pointer_to(Type *base) {
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Type *ty = calloc(1, sizeof(Type));
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ty->kind = TY_PTR;
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ty->base = base;
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return ty;
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}
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void add_type(Node *node) {
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if (!node || node->ty)
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return;
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add_type(node->lhs);
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add_type(node->rhs);
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add_type(node->cond);
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add_type(node->then);
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add_type(node->els);
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add_type(node->init);
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add_type(node->inc);
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for (Node *n = node->body; n; n = n->next)
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add_type(n);
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switch (node->kind) {
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case ND_ADD:
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case ND_SUB:
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case ND_MUL:
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case ND_DIV:
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case ND_NEG:
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case ND_ASSIGN:
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node->ty = node->lhs->ty;
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return;
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case ND_EQ:
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case ND_NE:
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case ND_LT:
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case ND_LE:
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case ND_VAR:
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case ND_NUM:
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node->ty = ty_int;
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return;
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case ND_ADDR:
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node->ty = pointer_to(node->lhs->ty);
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return;
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case ND_DEREF:
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if (node->lhs->ty->kind == TY_PTR)
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node->ty = node->lhs->ty->base;
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else
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node->ty = ty_int;
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return;
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}
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}
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