Add "primitive" parsers for all the non-trivia tokens in the lexer grammar

src/parser/primitives.c

@@ -0,0 +1,84 @@
+#include "primitives.h"
+#include "../ast.h"
+#include <string.h>
+
+parse_result_t parse_identifier(tokenlist_entry_t *current) {
+    return parse_token(current, TOKEN_IDENTIFIER, NODE_IDENTIFIER, nullptr);
+}
+
+parse_result_t parse_decimal(tokenlist_entry_t *current) {
+    return parse_token(current, TOKEN_DECIMAL, NODE_DECIMAL, nullptr);
+}
+
+parse_result_t parse_hexadecimal(tokenlist_entry_t *current) {
+    return parse_token(current, TOKEN_HEXADECIMAL, NODE_HEXADECIMAL, nullptr);
+}
+
+parse_result_t parse_binary(tokenlist_entry_t *current) {
+    return parse_token(current, TOKEN_BINARY, NODE_BINARY, nullptr);
+}
+
+parse_result_t parse_octal(tokenlist_entry_t *current) {
+    return parse_token(current, TOKEN_OCTAL, NODE_OCTAL, nullptr);
+}
+
+parse_result_t parse_string(tokenlist_entry_t *current) {
+    return parse_token(current, TOKEN_STRING, NODE_STRING, nullptr);
+}
+
+parse_result_t parse_char(tokenlist_entry_t *current) {
+    return parse_token(current, TOKEN_CHAR, NODE_CHAR, nullptr);
+}
+
+parse_result_t parse_colon(tokenlist_entry_t *current) {
+    return parse_token(current, TOKEN_COLON, NODE_COLON, nullptr);
+}
+
+parse_result_t parse_comma(tokenlist_entry_t *current) {
+    return parse_token(current, TOKEN_COMMA, NODE_COMMA, nullptr);
+}
+
+parse_result_t parse_lbracket(tokenlist_entry_t *current) {
+    return parse_token(current, TOKEN_LBRACKET, NODE_LBRACKET, nullptr);
+}
+
+parse_result_t parse_rbracket(tokenlist_entry_t *current) {
+    return parse_token(current, TOKEN_RBRACKET, NODE_RBRACKET, nullptr);
+}
+
+parse_result_t parse_plus(tokenlist_entry_t *current) {
+    return parse_token(current, TOKEN_PLUS, NODE_PLUS, nullptr);
+}
+
+parse_result_t parse_minus(tokenlist_entry_t *current) {
+    return parse_token(current, TOKEN_MINUS, NODE_MINUS, nullptr);
+}
+
+parse_result_t parse_asterisk(tokenlist_entry_t *current) {
+    return parse_token(current, TOKEN_ASTERISK, NODE_ASTERISK, nullptr);
+}
+
+parse_result_t parse_dot(tokenlist_entry_t *current) {
+    return parse_token(current, TOKEN_DOT, NODE_DOT, nullptr);
+}
+
+const char *registers[] = {"rax", "rcx", "rdx", "rbx", "rsp",  "rbp",
+                           "rsi", "rdi", "r8",  "r9",  "r10",  "r11",
+                           "r12", "r13", "r14", "r15", nullptr};
+bool is_register_token(lexer_token_t *token) {
+    for (size_t i = 0; registers[i] != nullptr; ++i)
+        if (strcmp(token->value, registers[i]) == 0)
+            return true;
+    return false;
+}
+
+parse_result_t parse_register(tokenlist_entry_t *current) {
+    return parse_token(current, TOKEN_IDENTIFIER, NODE_REGISTER,
+                       is_register_token);
+}
+
+bool is_section_token(lexer_token_t *token) {
+    return strcmp(token->value, "section") == 0;
+}
+
+parse_result_t parse_section(tokenlist_entry_t *current) {}

src/parser/primitives.h

@@ -0,0 +1,29 @@
+#ifndef INCLUDE_PARSER_PRIMITIVES_H_
+#define INCLUDE_PARSER_PRIMITIVES_H_
+
+#include "util.h"
+
+parse_result_t parse_identifier(tokenlist_entry_t *current);
+parse_result_t parse_decimal(tokenlist_entry_t *current);
+parse_result_t parse_hexadecimal(tokenlist_entry_t *current);
+parse_result_t parse_binary(tokenlist_entry_t *current);
+parse_result_t parse_octal(tokenlist_entry_t *current);
+parse_result_t parse_string(tokenlist_entry_t *current);
+parse_result_t parse_char(tokenlist_entry_t *current);
+parse_result_t parse_colon(tokenlist_entry_t *current);
+parse_result_t parse_comma(tokenlist_entry_t *current);
+parse_result_t parse_lbracket(tokenlist_entry_t *current);
+parse_result_t parse_rbracket(tokenlist_entry_t *current);
+parse_result_t parse_plus(tokenlist_entry_t *current);
+parse_result_t parse_minus(tokenlist_entry_t *current);
+parse_result_t parse_asterisk(tokenlist_entry_t *current);
+parse_result_t parse_dot(tokenlist_entry_t *current);
+
+/* These are "primitives" with a different name and some extra validation on top
+ * for example, register is just an identifier but it only matches a limited set
+ * of values
+ */
+parse_result_t parse_register(tokenlist_entry_t *current);
+parse_result_t parse_section(tokenlist_entry_t *current);
+
+#endif // INCLUDE_PARSER_PRIMITIVES_H_