motiejus/zig0
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making tcc happier

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Motiejus Jakštys
2024-12-27 12:34:08 +02:00
parent 6ae7d7320d
commit 6006a802e1
10 changed files with 416 additions and 274 deletions
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49
ast.c
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@@ -9,45 +9,15 @@
#define N 1024
void astNodeListEnsureCapacity(AstNodeList* list, uint32_t additional)
{
const uint32_t new_len = list->len + additional;
if (new_len <= list->cap) {
return;
}
const uint32_t new_cap = new_len > list->cap * 2 ? new_len : list->cap * 2;
list->tags = realloc(list->tags, new_cap * sizeof(AstNodeTag));
list->main_tokens = realloc(list->main_tokens, new_cap * sizeof(AstTokenIndex));
list->datas = realloc(list->datas, new_cap * sizeof(AstData));
if (!list->tags || !list->main_tokens || !list->datas)
exit(1);
list->cap = new_cap;
}
AstNodeIndex astNodeListAppend(
AstNodeList* list,
AstNodeTag tag,
AstTokenIndex main_token,
AstData data)
{
astNodeListEnsureCapacity(list, 1);
list->tags[list->len] = tag;
list->main_tokens[list->len] = main_token;
list->datas[list->len] = data;
return list->len++;
}
Ast astParse(const char* source, const uint32_t len)
{
Ast astParse(const char* source, const uint32_t len) {
uint32_t estimated_token_count = len / 8;
// Initialize token list
AstTokenList tokens = {
.len = 0,
.cap = estimated_token_count,
.tags = SLICE_INIT(TokenizerTag, estimated_token_count),
.starts = SLICE_INIT(AstIndex, estimated_token_count)
.tags = ARR_INIT(TokenizerTag, estimated_token_count),
.starts = ARR_INIT(AstIndex, estimated_token_count)
};
// Tokenize
@@ -70,9 +40,9 @@ Ast astParse(const char* source, const uint32_t len)
AstNodeList nodes = {
.len = 0,
.cap = estimated_node_count,
.tags = SLICE_INIT(AstNodeTag, estimated_node_count),
.main_tokens = SLICE_INIT(AstTokenIndex, estimated_node_count),
.datas = SLICE_INIT(AstData, estimated_node_count)
.tags = ARR_INIT(AstNodeTag, estimated_node_count),
.main_tokens = ARR_INIT(AstTokenIndex, estimated_node_count),
.datas = ARR_INIT(AstData, estimated_node_count)
};
// Initialize parser
@@ -84,11 +54,8 @@ Ast astParse(const char* source, const uint32_t len)
.tokens_len = tokens.len,
.tok_i = 0,
.nodes = nodes,
.extra_data = {
.len = 0,
.cap = N,
.arr = SLICE_INIT(AstNodeIndex, N) },
.scratch = { .len = 0, .cap = N, .arr = SLICE_INIT(AstNodeIndex, N) }
.extra_data = SLICE_INIT(AstNodeIndex, N),
.scratch = SLICE_INIT(AstNodeIndex, N)
};
free(p.scratch.arr); // Parser takes ownership