4 /* NOTE: it's a test - I'll abort() on epic-failure */
9 /* (note: 'do {} while(0)' forces the need for a semicolon after assert() */
10 #define assert(x) do { if ( !(x) ) { printf("Assertion failed: %s\n", #x); abort(); } } while(0)
12 VECTOR_MAKE(ast_value*, globals);
13 VECTOR_MAKE(ast_function*, functions);
18 ast_value *gfoo = NULL;
19 ast_value *gbar = NULL;
20 ast_value *const_3 = NULL;
21 ast_value *const_4 = NULL;
22 ast_value *vmain = NULL;
23 ast_function *fmain = NULL;
33 gfoo = ast_value_new(ctx, "foo", TYPE_FLOAT);
35 assert(globals_add(gfoo) >= 0);
37 gbar = ast_value_new(ctx, "bar", TYPE_FLOAT);
39 assert(globals_add(gbar) >= 0);
41 const_3 = ast_value_new(ctx, "3", TYPE_FLOAT);
43 assert(globals_add(const_3) >= 0);
44 const_3->isconst = true;
45 const_3->constval.vfloat = 3.0;
47 const_4 = ast_value_new(ctx, "4", TYPE_FLOAT);
49 assert(globals_add(const_4) >= 0);
50 const_4->isconst = true;
51 const_4->constval.vfloat = 4.0;
53 /* defining a function */
54 vmain = ast_value_new(ctx, "main", TYPE_FUNCTION);
56 assert(globals_add(vmain) >= 0);
57 /* This happens in ast_function_new:
58 vmain->isconst = true;
59 vmain->constval.vfunc = fmain;
60 Creating a function node connects the global to the function.
61 You still have to delete *BOTH*, deleting one will NOT delete the other,
62 it will only unlink them.
65 /* creating a function body */
66 fmain = ast_function_new(ctx, "main", vmain);
68 assert(functions_add(fmain) >= 0);
71 ba = ast_block_new(ctx);
73 assert(ast_function_blocks_add(fmain, ba));
75 /* local variable i */
76 li = ast_value_new(ctx, "i", TYPE_FLOAT);
78 assert(ast_block_locals_add(ba, li));
80 /* I realize having to provide the opcode isn't the best way to go, but,
83 exp = (ast_expression*)ast_store_new(ctx, INSTR_STORE_F, gfoo, (ast_expression*)const_3);
85 assert(ast_block_exprs_add(ba, exp));
87 exp = (ast_expression*)ast_store_new(ctx, INSTR_STORE_F, gbar, (ast_expression*)const_4);
89 assert(ast_block_exprs_add(ba, exp));
92 exp = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)gbar, (ast_expression*)gfoo);
94 exp = (ast_expression*)ast_store_new(ctx, INSTR_STORE_F, li, exp);
96 assert(ast_block_exprs_add(ba, exp));
100 /* Next up: Having the AST generate IR */
103 /* Functions must be deleted FIRST since their expressions
104 * reference global variables.
106 for (i = 0; i < functions_elements; ++i) {
107 ast_function_delete(functions_data[i]);
110 mem_d(functions_data);
112 /* We must delete not only globals, but also the functions'
113 * ast_values (their type and name), that's why we added them to the globals vector.
115 for (i = 0; i < globals_elements; ++i) {
116 ast_value_delete(globals_data[i]);