summaryrefslogtreecommitdiffstats
path: root/amend/ast.h
blob: 7834a2bdd9c1451b08998ab1ab7370b42858c60e (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef AMEND_AST_H_
#define AMEND_AST_H_

#include "commands.h"

typedef struct AmStringValue AmStringValue;

typedef struct {
    int argc;
    AmStringValue *argv;
} AmFunctionArguments;

/* An internal structure used only by the parser;
 * will not appear in the output AST.
xxx try to move this into parser.h
 */
typedef struct AmFunctionArgumentBuilder AmFunctionArgumentBuilder;
struct AmFunctionArgumentBuilder {
    AmFunctionArgumentBuilder *next;
    AmStringValue *arg;
    int argCount;
};

typedef struct AmWordListBuilder AmWordListBuilder;
struct AmWordListBuilder {
    AmWordListBuilder *next;
    const char *word;
    int wordCount;
};

typedef struct {
    const char *name;
    Function *fn;
    AmFunctionArguments *args;
} AmFunctionCall;


/* <string-value> ::=
 *      <literal-string> |
 *      <function-call>
 */
struct AmStringValue {
    unsigned int line;

    enum {
        AM_SVAL_LITERAL,
        AM_SVAL_FUNCTION,
    } type;
    union {
        const char *literal;
//xxx inline instead of using pointers
        AmFunctionCall *function;
    } u;
};


/* <string-comparison-expression> ::=
 *      <string-value> <string-comparison-operator> <string-value>
 */
typedef struct {
    unsigned int line;

    enum {
        AM_SOP_LT,
        AM_SOP_LE,
        AM_SOP_GT,
        AM_SOP_GE,
        AM_SOP_EQ,
        AM_SOP_NE,
    } op;
    AmStringValue *arg1;
    AmStringValue *arg2;
} AmStringComparisonExpression;


/* <boolean-expression> ::=
 *      ! <boolean-value> |
 *      <boolean-value> <binary-boolean-operator> <boolean-value>
 */
typedef struct AmBooleanValue AmBooleanValue;
typedef struct {
    unsigned int line;

    enum {
        AM_BOP_NOT,

        AM_BOP_EQ,
        AM_BOP_NE,

        AM_BOP_AND,

        AM_BOP_OR,
    } op;
    AmBooleanValue *arg1;
    AmBooleanValue *arg2;
} AmBooleanExpression;


/* <boolean-value> ::=
 *      <boolean-expression> |
 *      <string-comparison-expression>
 */
struct AmBooleanValue {
    unsigned int line;

    enum {
        AM_BVAL_EXPRESSION,
        AM_BVAL_STRING_COMPARISON,
    } type;
    union {
        AmBooleanExpression expression;
        AmStringComparisonExpression stringComparison;
    } u;
};


typedef struct {
    unsigned int line;

    int argc;
    const char **argv;
} AmWordList;


typedef struct {
    bool booleanArgs;
    union {
        AmWordList *w;
        AmBooleanValue *b;
    } u;
} AmCommandArguments;

typedef struct {
    unsigned int line;

    const char *name;
    Command *cmd;
    AmCommandArguments *args;
} AmCommand;

typedef struct {
    AmCommand **commands;
    int commandCount;
    int arraySize;
} AmCommandList;

void dumpCommandList(const AmCommandList *commandList);

#endif  // AMEND_AST_H_