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29 /* Note: I will not be using a _t suffix for the
30 * "main" ast node types for now.
33 typedef union ast_node_u ast_node;
34 typedef union ast_expression_u ast_expression;
36 typedef struct ast_value_s ast_value;
37 typedef struct ast_function_s ast_function;
38 typedef struct ast_block_s ast_block;
39 typedef struct ast_binary_s ast_binary;
40 typedef struct ast_store_s ast_store;
42 /* Node interface with common components
44 typedef void ast_node_delete(ast_node*);
48 /* I don't feel comfortable using keywords like 'delete' as names... */
49 ast_node_delete *destroy;
50 /* keep: if a node contains this node, 'keep'
51 * prevents its dtor from destroying this node as well.
56 #define ast_delete(x) ( ( (ast_node*)(x) ) -> node.destroy )((ast_node*)(x))
58 /* Expression interface
60 * Any expression or block returns an ir_value, and needs
61 * to know the current function.
63 typedef bool ast_expression_codegen(ast_expression*,
69 ast_expression_codegen *codegen;
70 } ast_expression_common;
74 * Types are also values, both have a type and a name.
75 * especially considering possible constructs like typedefs.
77 * is like creating a 'float foo', foo serving as the type's name.
81 ast_expression_common expression;
100 /* if vtype is qc_function, params contain parameters, and
101 * 'next' the return type.
103 MEM_VECTOR_MAKE(ast_value*, params);
105 ast_value* ast_value_new(lex_ctx_t ctx, const char *name, int qctype);
106 void ast_value_delete(ast_value*);
108 void ast_value_set_name(ast_value*, const char *name);
110 bool ast_value_codegen(ast_value*, ast_function*, ir_value**);
114 * A value-returning binary expression.
118 ast_expression_common expression;
124 ast_binary* ast_binary_new(lex_ctx_t ctx,
128 void ast_binary_delete(ast_binary*);
130 /* hmm, seperate functions?
131 bool ast_block_codegen(ast_block*, ast_function*, ir_value**);
133 bool ast_binary_codegen(ast_binary*, ast_function*, ir_value**);
137 * Stores left<-right and returns left.
138 * Specialized binary expression node
142 ast_expression_common expression;
147 ast_store* ast_store_new(lex_ctx_t ctx, int op,
148 ast_value *d, ast_value *s);
149 void ast_store_delete(ast_store*);
151 bool ast_store_codegen(ast_store*, ast_function*, ir_value**);
158 ast_expression_common expression;
160 MEM_VECTOR_MAKE(ast_value*, locals);
161 MEM_VECTOR_MAKE(ast_expression*, exprs);
163 ast_block* ast_block_new(lex_ctx_t ctx);
164 void ast_block_delete(ast_block*);
166 MEM_VECTOR_PROTO(ast_block, ast_value*, locals);
167 MEM_VECTOR_PROTO(ast_block, ast_expression*, exprs);
169 bool ast_block_codegen(ast_block*, ast_function*, ir_value**);
173 * Contains a list of blocks... at least in theory.
174 * Usually there's just the main block, other blocks are inside that.
176 * Technically, functions don't need to be an AST node, since we have
177 * neither functions inside functions, nor lambdas, and function
178 * pointers could just work with a name. However, this way could be
179 * more flexible, and adds no real complexity.
181 struct ast_function_s
183 ast_node_common node;
188 MEM_VECTOR_MAKE(ast_block*, blocks);
190 ast_function* ast_function_new(lex_ctx_t ctx, const char *name, ast_value *vtype);
191 void ast_function_delete(ast_function*);
193 MEM_VECTOR_PROTO(ast_function, ast_block*, blocks);
195 bool ast_function_codegen(ast_function *self, ir_builder *builder);
199 union ast_expression_u
201 ast_expression_common expression;
211 ast_node_common node;
212 ast_expression expression;