add: top level parser

1 files changed, 33 insertions, 0 deletions

diff --git a/src/parser/ast.c b/src/parser/ast.c
new file mode 100644
index 0000000..979dff0
--- /dev/null
+++ b/src/parser/ast.c
@@ -0,0 +1,33 @@
+#include <stdlib.h>
+
+#include "parser/ast.h"
+
+struct Program create_program(void)
+{
+	struct Program program;
+	program.consts = NULL;
+	program.const_count = 0;
+	program.const_capacity = 0;
+	return program;
+}
+
+void free_program(struct Program* program)
+{
+	free(program->consts);
+	program->consts = NULL;
+	program->const_count = 0;
+	program->const_capacity = 0;
+}
+
+void add_const(struct Program* program, struct ConstDecl decl)
+{
+	if (program->const_count == program->const_capacity)
+	{
+		size_t capacity = program->const_capacity < 8 ? 8 : program->const_capacity * 2;
+		program->consts = realloc(program->consts, capacity * sizeof(struct ConstDecl));
+		program->const_capacity = capacity;
+	}
+
+	program->consts[program->const_count] = decl;
+	program->const_count += 1;
+}