1 | /*
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2 | * Copyright (c) 2010 Jiri Svoboda
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3 | * All rights reserved.
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4 | *
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5 | * Redistribution and use in source and binary forms, with or without
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6 | * modification, are permitted provided that the following conditions
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7 | * are met:
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8 | *
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9 | * - Redistributions of source code must retain the above copyright
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10 | * notice, this list of conditions and the following disclaimer.
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11 | * - Redistributions in binary form must reproduce the above copyright
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12 | * notice, this list of conditions and the following disclaimer in the
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13 | * documentation and/or other materials provided with the distribution.
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14 | * - The name of the author may not be used to endorse or promote products
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15 | * derived from this software without specific prior written permission.
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16 | *
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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27 | */
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28 |
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29 | /** @file Static type system representation. */
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30 |
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31 | #ifndef TDATA_T_H_
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32 | #define TDATA_T_H_
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33 |
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34 | #include "intmap_t.h"
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35 |
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36 | /** Class of primitive type. */
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37 | typedef enum {
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38 | /** Boolean type */
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39 | tpc_bool,
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40 | /** Character type */
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41 | tpc_char,
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42 | /** Integer type */
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43 | tpc_int,
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44 | /** Special type for nil reference */
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45 | tpc_nil,
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46 | /** String type */
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47 | tpc_string,
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48 | /** Resource type */
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49 | tpc_resource
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50 | } tprimitive_class_t;
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51 |
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52 | /** Primitive type. */
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53 | typedef struct {
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54 | /** Class of primitive type */
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55 | tprimitive_class_t tpc;
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56 | } tdata_primitive_t;
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57 |
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58 | /** Object type. */
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59 | typedef struct {
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60 | /** @c sn_static if expression is a static CSI reference */
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61 | statns_t static_ref;
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62 |
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63 | /** CSI definition */
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64 | struct stree_csi *csi;
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65 |
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66 | /** (Real) type arguments */
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67 | list_t targs; /* of tdata_item_t */
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68 | } tdata_object_t;
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69 |
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70 | /** Array type. */
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71 | typedef struct {
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72 | /** Base type item */
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73 | struct tdata_item *base_ti;
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74 |
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75 | /** Rank */
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76 | int rank;
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77 |
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78 | /** Extents */
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79 | list_t extents; /* of stree_expr_t */
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80 | } tdata_array_t;
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81 |
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82 | /** Function signature type.
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83 | *
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84 | * This is a part of functional type or delegate type.
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85 | */
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86 | typedef struct {
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87 | /** Types of fixed arguments. */
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88 | list_t arg_ti; /* of tdata_item_t */
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89 |
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90 | /** Type of variadic argument */
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91 | struct tdata_item *varg_ti;
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92 |
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93 | /** Return type */
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94 | struct tdata_item *rtype;
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95 | } tdata_fun_sig_t;
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96 |
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97 | /** Delegate type. */
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98 | typedef struct {
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99 | /** Delegate definition or @c NULL if anonymous delegate */
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100 | struct stree_deleg *deleg;
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101 |
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102 | /** Delegate signature type */
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103 | tdata_fun_sig_t *tsig;
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104 | } tdata_deleg_t;
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105 |
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106 | /** Enum-base type.
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107 | *
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108 | * Type for expression which reference an enum declaration. In run time
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109 | * enum type reference is represented by @c rdata_deleg_t. (Which is used
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110 | * for any symbol references).
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111 | */
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112 | typedef struct {
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113 | /** Enum definition */
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114 | struct stree_enum *enum_d;
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115 | } tdata_ebase_t;
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116 |
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117 | /** Enum type. */
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118 | typedef struct {
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119 | /** Enum definition */
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120 | struct stree_enum *enum_d;
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121 | } tdata_enum_t;
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122 |
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123 | /** Functional type. */
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124 | typedef struct {
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125 | /** Delegate definition or @c NULL if anonymous delegate */
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126 | struct stree_deleg *deleg;
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127 |
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128 | /** Function signature type */
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129 | tdata_fun_sig_t *tsig;
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130 | } tdata_fun_t;
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131 |
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132 | /** Type variable reference. */
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133 | typedef struct {
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134 | /** Definition of type argument this variable is referencing. */
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135 | struct stree_targ *targ;
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136 | } tdata_vref_t;
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137 |
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138 | typedef enum {
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139 | /** Primitive type item */
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140 | tic_tprimitive,
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141 | /** Object type item */
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142 | tic_tobject,
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143 | /** Array type item */
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144 | tic_tarray,
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145 | /** Delegate type item */
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146 | tic_tdeleg,
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147 | /** Enum-base type item */
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148 | tic_tebase,
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149 | /** Enum type item */
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150 | tic_tenum,
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151 | /** Function type item */
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152 | tic_tfun,
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153 | /** Type variable item */
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154 | tic_tvref,
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155 | /** Special error-recovery type item */
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156 | tic_ignore
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157 | } titem_class_t;
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158 |
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159 | /** Type item, the result of evaluating a type expression. */
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160 | typedef struct tdata_item {
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161 | titem_class_t tic;
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162 |
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163 | union {
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164 | tdata_primitive_t *tprimitive;
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165 | tdata_object_t *tobject;
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166 | tdata_array_t *tarray;
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167 | tdata_deleg_t *tdeleg;
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168 | tdata_ebase_t *tebase;
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169 | tdata_enum_t *tenum;
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170 | tdata_fun_t *tfun;
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171 | tdata_vref_t *tvref;
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172 | } u;
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173 | } tdata_item_t;
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174 |
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175 | /** Type variable valuation (mapping of type argument names to values). */
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176 | typedef struct {
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177 | /** Maps name SID to type item */
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178 | intmap_t tvv; /* of tdata_item_t */
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179 | } tdata_tvv_t;
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180 |
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181 | #endif
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